mongodb-odm-docs-dash/build.docset/Contents/Resources/Documents/reference/query-builder-api.html
2017-12-01 19:35:11 -08:00

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<div class="section" id="query-builder-api">
<h1>Query Builder API<a class="headerlink" href="#query-builder-api" title="Permalink to this headline"></a></h1>
<p>Querying for documents with Doctrine is just as simple as if you
weren't using Doctrine at all. Of course you always have your
traditional <code class="docutils literal"><span class="pre">find()</span></code> and <code class="docutils literal"><span class="pre">findOne()</span></code> methods but you also have
a <code class="docutils literal"><span class="pre">Query</span></code> object with a fluent API for defining the query that
should be executed.</p>
<p>The <code class="docutils literal"><span class="pre">Query</span></code> object supports several types of queries</p>
<ul class="simple">
<li>FIND</li>
<li>FIND_AND_UPDATE</li>
<li>FIND_AND_REMOVE</li>
<li>INSERT</li>
<li>UPDATE</li>
<li>REMOVE</li>
<li>GROUP</li>
<li>MAP_REDUCE</li>
<li>DISTINCT_FIELD</li>
<li>GEO_LOCATION</li>
</ul>
<p>This section will show examples for the different types of queries.</p>
<div class="section" id="finding-documents">
<h2>Finding Documents<a class="headerlink" href="#finding-documents" title="Permalink to this headline"></a></h2>
<p>You have a few different ways to find documents. You can use the <code class="docutils literal"><span class="pre">find()</span></code> method
to find a document by its identifier:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$users</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">find</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">,</span> <span class="nv">$id</span><span class="p">);</span>
</pre></div>
</div>
<p>The <code class="docutils literal"><span class="pre">find()</span></code> method is just a convenience shortcut method to:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$user</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">getRepository</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">find</span><span class="p">(</span><span class="nv">$id</span><span class="p">);</span>
</pre></div>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">The <code class="docutils literal"><span class="pre">find()</span></code> method checks the local in memory identity map for the document
before querying the database for the document.</p>
</div>
<p>On the <code class="docutils literal"><span class="pre">DocumentRepository</span></code> you have a few other methods for finding documents:</p>
<ul class="simple">
<li><code class="docutils literal"><span class="pre">findBy</span></code> - find documents by an array of criteria</li>
<li><code class="docutils literal"><span class="pre">findOneBy</span></code> - find one document by an array of criteria</li>
</ul>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$users</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">getRepository</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">findBy</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;type&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;employee&#39;</span><span class="p">));</span>
<span class="nv">$user</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">getRepository</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">findOneBy</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;username&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;jwage&#39;</span><span class="p">));</span>
</pre></div>
</div>
</div>
<div class="section" id="creating-a-query-builder">
<h2>Creating a Query Builder<a class="headerlink" href="#creating-a-query-builder" title="Permalink to this headline"></a></h2>
<p>You can easily create a new <code class="docutils literal"><span class="pre">Query\Builder</span></code> object with the
<code class="docutils literal"><span class="pre">DocumentManager::createQueryBuilder()</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">);</span>
</pre></div>
</div>
<p>The first and only argument is optional, you can specify it later
with the <code class="docutils literal"><span class="pre">find()</span></code>, <code class="docutils literal"><span class="pre">update()</span></code> (deprecated), <code class="docutils literal"><span class="pre">updateOne()</span></code>,
<code class="docutils literal"><span class="pre">updateMany()</span></code> or <code class="docutils literal"><span class="pre">remove()</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">();</span>
<span class="c1">// ...</span>
<span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">find</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">);</span>
</pre></div>
</div>
<div class="section" id="executing-queries">
<h3>Executing Queries<a class="headerlink" href="#executing-queries" title="Permalink to this headline"></a></h3>
<p>You can execute a query by getting a <code class="docutils literal"><span class="pre">Query</span></code> through the <code class="docutils literal"><span class="pre">getQuery()</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">);</span>
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">();</span>
</pre></div>
</div>
<p>Now you can <code class="docutils literal"><span class="pre">execute()</span></code> that query and it will return a cursor for you to iterate over the results:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$users</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
</div>
<div class="section" id="debugging-queries">
<h3>Debugging Queries<a class="headerlink" href="#debugging-queries" title="Permalink to this headline"></a></h3>
<p>While building not complicated queries is really simple sometimes it might be hard to wrap your head
around more sophisticated queries that involves building separate expressions to work properly. If
you are not sure if your the query constructed with Builder is in fact correct you may want to <code class="docutils literal"><span class="pre">debug()</span></code> it</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">);</span>
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">();</span>
<span class="nv">$debug</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-&gt;</span><span class="na">debug</span><span class="p">();</span>
</pre></div>
</div>
<p>At this point your query is <em>prepared</em> - that means ODM done all its job in renaming fields to match their
database name, added discriminator fields, applied filters, created correct references and all other things
you employ ODM to. The array returned by <code class="docutils literal"><span class="pre">-&gt;debug()</span></code> is what is passed to the underlying driver for the
query to be performed.</p>
</div>
<div class="section" id="eager-cursors">
<h3>Eager Cursors<a class="headerlink" href="#eager-cursors" title="Permalink to this headline"></a></h3>
<p>You can configure queries to return an eager cursor instead of a normal mongodb cursor using the <code class="docutils literal"><span class="pre">Builder#eagerCursor()</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">eagerCursor</span><span class="p">(</span><span class="k">true</span><span class="p">);</span>
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">();</span>
<span class="nv">$cursor</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span> <span class="c1">// instanceof Doctrine\ODM\MongoDB\EagerCursor</span>
</pre></div>
</div>
<p>Iterating over the <code class="docutils literal"><span class="pre">$cursor</span></code> will fetch all the data in a short and small cursor all at once and will hydrate
one document at a time in to an object as you iterate:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="k">foreach</span> <span class="p">(</span><span class="nv">$cursor</span> <span class="k">as</span> <span class="nv">$user</span><span class="p">)</span> <span class="p">{</span> <span class="c1">// queries for all users and data is held internally</span>
<span class="c1">// each User object is hydrated from the data one at a time.</span>
<span class="p">}</span>
</pre></div>
</div>
</div>
<div class="section" id="getting-single-result">
<h3>Getting Single Result<a class="headerlink" href="#getting-single-result" title="Permalink to this headline"></a></h3>
<p>If you want to just get a single result you can use the <code class="docutils literal"><span class="pre">Query#getSingleResult()</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$user</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;jwage&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">getSingleResult</span><span class="p">();</span>
</pre></div>
</div>
</div>
<div class="section" id="selecting-fields">
<h3>Selecting Fields<a class="headerlink" href="#selecting-fields" title="Permalink to this headline"></a></h3>
<p>You can limit the fields that are returned in the results by using
the <code class="docutils literal"><span class="pre">select()</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">select</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">,</span> <span class="s1">&#39;password&#39;</span><span class="p">);</span>
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">();</span>
<span class="nv">$users</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>In the results only the data from the username and password will be
returned.</p>
</div>
<div class="section" id="index-hints">
<h3>Index hints<a class="headerlink" href="#index-hints" title="Permalink to this headline"></a></h3>
<p>You can force MongoDB to use a specific index for a query with the <code class="docutils literal"><span class="pre">hint()</span></code> method (see <a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/meta/hint/">hint</a>)</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">hint</span><span class="p">(</span><span class="s1">&#39;user_pass_idx&#39;</span><span class="p">);</span>
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">();</span>
<span class="nv">$users</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Combining <code class="docutils literal"><span class="pre">select()</span></code> and <code class="docutils literal"><span class="pre">hint()</span></code> on appropriate indexes can result in very fast
<a class="reference external" href="https://docs.mongodb.com/manual/core/query-optimization/#covered-query">covered queries</a></p>
</div>
</div>
<div class="section" id="selecting-distinct-values">
<h3>Selecting Distinct Values<a class="headerlink" href="#selecting-distinct-values" title="Permalink to this headline"></a></h3>
<p>Sometimes you may want to get an array of distinct values in a
collection. You can accomplish this using the <code class="docutils literal"><span class="pre">distinct()</span></code>
method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$ages</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">distinct</span><span class="p">(</span><span class="s1">&#39;age&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>The above would give you an <code class="docutils literal"><span class="pre">ArrayCollection</span></code> of all the distinct user ages!</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">MongoDB's <a class="reference external" href="https://docs.mongodb.com/manual/reference/command/distinct/">distinct command</a>
does not support sorting, so you cannot combine <code class="docutils literal"><span class="pre">distinct()</span></code> with
<code class="docutils literal"><span class="pre">sort()</span></code>. If you would like to sort the results of a distinct query, you
will need to do so in PHP after executing the query.</p>
</div>
</div>
<div class="section" id="refreshing-documents">
<h3>Refreshing Documents<a class="headerlink" href="#refreshing-documents" title="Permalink to this headline"></a></h3>
<p>When a query (e.g. geoNear, find) returns one or more hydrated documents whose
identifiers are already in the identity map, ODM returns the managed document
instances for those results. In this case, a managed document's data may differ
from whatever was just returned by the database query.</p>
<p>The query builder's <code class="docutils literal"><span class="pre">refresh()</span></code> method may be used to instruct ODM to override
the managed document with data from the query result. This is comparable to
calling <code class="docutils literal"><span class="pre">DocumentManager::refresh()</span></code> for a managed document. The document's
changeset will be reset in the process.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$user</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;jwage&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">refresh</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">getSingleResult</span><span class="p">();</span>
<span class="c1">// Jon&#39;s user will have the latest data, even if it was already managed</span>
</pre></div>
</div>
<p>Refreshing is not applicable if hydration is disabled.</p>
</div>
<div class="section" id="fetching-documents-as-read-only">
<h3>Fetching Documents as Read-Only<a class="headerlink" href="#fetching-documents-as-read-only" title="Permalink to this headline"></a></h3>
<p>Similar to <code class="docutils literal"><span class="pre">refresh()</span></code>, <code class="docutils literal"><span class="pre">readOnly()</span></code> instructs ODM to not only hydrate the
latest data but also to create new document's instance (i.e. if found document
would be already managed by Doctrine, new instance will be returned) and not
register it in <code class="docutils literal"><span class="pre">UnitOfWork</span></code>.</p>
<p>This technique can prove especially useful when using <code class="docutils literal"><span class="pre">select()</span></code> with no intent
to update fetched documents.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$user</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;malarzm&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">readOnly</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">getSingleResult</span><span class="p">();</span>
<span class="c1">// Maciej&#39;s user will have the latest data, and will not be the same object</span>
<span class="c1">// as the one that was already managed (if it was)</span>
</pre></div>
</div>
<p>Read-Only is not applicable if hydration is disabled.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Read-only mode is not deep, i.e. any references (be it owning or inverse) of
fetched WILL be managed by Doctrine. This is a shortcoming of current
implementation, may change in future and will not be considered a BC break
(will be treated as a feature instead).</p>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">To manage a document previously fetched in read-only mode, always use the
<cite>merge</cite> method of the DocumentManager. Using <cite>persist</cite> in these cases can
have unwanted side effects.</p>
</div>
</div>
<div class="section" id="disabling-hydration">
<h3>Disabling Hydration<a class="headerlink" href="#disabling-hydration" title="Permalink to this headline"></a></h3>
<p>For find queries the results by default are hydrated and you get
document objects back instead of arrays. You can disable this and
get the raw results directly back from mongo by using the
<code class="docutils literal"><span class="pre">hydrate(false)</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$users</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">hydrate</span><span class="p">(</span><span class="k">false</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
<span class="nb">print_r</span><span class="p">(</span><span class="nv">$users</span><span class="p">);</span>
</pre></div>
</div>
</div>
<div class="section" id="limiting-results">
<h3>Limiting Results<a class="headerlink" href="#limiting-results" title="Permalink to this headline"></a></h3>
<p>You can limit results similar to how you would in a relational
database with a limit and offset by using the <code class="docutils literal"><span class="pre">limit()</span></code> and
<code class="docutils literal"><span class="pre">skip()</span></code> method.</p>
<p>Here is an example where we get the third page of blog posts when
we show twenty at a time:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$blogPosts</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;BlogPost&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">limit</span><span class="p">(</span><span class="mi">20</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">skip</span><span class="p">(</span><span class="mi">40</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
</div>
<div class="section" id="sorting-results">
<h3>Sorting Results<a class="headerlink" href="#sorting-results" title="Permalink to this headline"></a></h3>
<p>You can sort the results by using the <code class="docutils literal"><span class="pre">sort()</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">sort</span><span class="p">(</span><span class="s1">&#39;createdAt&#39;</span><span class="p">,</span> <span class="s1">&#39;desc&#39;</span><span class="p">);</span>
</pre></div>
</div>
<p>If you want to an additional sort you can call <code class="docutils literal"><span class="pre">sort()</span></code> again. The calls are stacked and ordered
in the order you call the method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$query</span><span class="o">-&gt;</span><span class="na">sort</span><span class="p">(</span><span class="s1">&#39;featured&#39;</span><span class="p">,</span> <span class="s1">&#39;desc&#39;</span><span class="p">);</span>
</pre></div>
</div>
</div>
<div class="section" id="map-reduce">
<h3>Map Reduce<a class="headerlink" href="#map-reduce" title="Permalink to this headline"></a></h3>
<p>You can also run map reduced find queries using the <code class="docutils literal"><span class="pre">Query</span></code>
object:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Event&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;type&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;sale&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">map</span><span class="p">(</span><span class="s1">&#39;function() { emit(this.userId, 1); }&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">reduce</span><span class="p">(</span><span class="s2">&quot;function(k, vals) {</span>
<span class="s2"> var sum = 0;</span>
<span class="s2"> for (var i in vals) {</span>
<span class="s2"> sum += vals[i];</span>
<span class="s2"> }</span>
<span class="s2"> return sum;</span>
<span class="s2"> }&quot;</span><span class="p">);</span>
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">();</span>
<span class="nv">$results</span> <span class="o">=</span> <span class="nv">$query</span><span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">When you specify a <code class="docutils literal"><span class="pre">map()</span></code> and <code class="docutils literal"><span class="pre">reduce()</span></code> operation
the results will not be hydrated and the raw results from the map
reduce operation will be returned.</p>
</div>
<p>If you just want to reduce the results using a javascript function
you can just call the <code class="docutils literal"><span class="pre">where()</span></code> method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">where</span><span class="p">(</span><span class="s2">&quot;function() { return this.type == &#39;admin&#39;; }&quot;</span><span class="p">);</span>
</pre></div>
</div>
<p>You can read more about the <a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/where/">$where operator</a> in the Mongo docs.</p>
</div>
<div class="section" id="conditional-operators">
<h3>Conditional Operators<a class="headerlink" href="#conditional-operators" title="Permalink to this headline"></a></h3>
<p>The conditional operators in Mongo are available to limit the returned results through a easy to use API. Doctrine abstracts this to a fluent object oriented interface with a fluent API. Here is a list of all the conditional operation methods you can use on the <cite>QueryBuilder</cite> object.</p>
<ul class="simple">
<li><code class="docutils literal"><span class="pre">where($javascript)</span></code></li>
<li><code class="docutils literal"><span class="pre">in($values)</span></code></li>
<li><code class="docutils literal"><span class="pre">notIn($values)</span></code></li>
<li><code class="docutils literal"><span class="pre">equals($value)</span></code></li>
<li><code class="docutils literal"><span class="pre">notEqual($value)</span></code></li>
<li><code class="docutils literal"><span class="pre">gt($value)</span></code></li>
<li><code class="docutils literal"><span class="pre">gte($value)</span></code></li>
<li><code class="docutils literal"><span class="pre">lt($value)</span></code></li>
<li><code class="docutils literal"><span class="pre">lte($value)</span></code></li>
<li><code class="docutils literal"><span class="pre">range($start,</span> <span class="pre">$end)</span></code></li>
<li><code class="docutils literal"><span class="pre">size($size)</span></code></li>
<li><code class="docutils literal"><span class="pre">exists($bool)</span></code></li>
<li><code class="docutils literal"><span class="pre">type($type)</span></code></li>
<li><code class="docutils literal"><span class="pre">all($values)</span></code></li>
<li><code class="docutils literal"><span class="pre">mod($mod)</span></code></li>
<li><code class="docutils literal"><span class="pre">addOr($expr)</span></code></li>
<li><code class="docutils literal"><span class="pre">references($document)</span></code></li>
<li><code class="docutils literal"><span class="pre">includesReferenceTo($document)</span></code></li>
</ul>
<p>Query for active administrator users:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;type&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;admin&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;active&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="k">true</span><span class="p">);</span>
</pre></div>
</div>
<p>Query for articles that have some tags:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags.name&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">in</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;tag1&#39;</span><span class="p">,</span> <span class="s1">&#39;tag2&#39;</span><span class="p">));</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/in/">$in operator</a>
in the Mongo docs</p>
<p>Query for articles that do not have some tags:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags.name&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">notIn</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;tag3&#39;</span><span class="p">));</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/nin/">$nin operator</a>
in the Mongo docs.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;type&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">notEqual</span><span class="p">(</span><span class="s1">&#39;admin&#39;</span><span class="p">);</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/ne/">$ne operator</a>
in the Mongo docs.</p>
<p>Query for accounts with an amount due greater than 30:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Account&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;amount_due&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">gt</span><span class="p">(</span><span class="mi">30</span><span class="p">);</span>
</pre></div>
</div>
<p>Query for accounts with an amount due greater than or equal to 30:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Account&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;amount_due&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">gte</span><span class="p">(</span><span class="mi">30</span><span class="p">);</span>
</pre></div>
</div>
<p>Query for accounts with an amount due less than 30:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Account&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;amount_due&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">lt</span><span class="p">(</span><span class="mi">30</span><span class="p">);</span>
</pre></div>
</div>
<p>Query for accounts with an amount due less than or equal to 30:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Account&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;amount_due&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">lte</span><span class="p">(</span><span class="mi">30</span><span class="p">);</span>
</pre></div>
</div>
<p>Query for accounts with an amount due between 10 and 20:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Account&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;amount_due&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">range</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">20</span><span class="p">);</span>
</pre></div>
</div>
<p>Read more about
<a class="reference external" href="http://www.mongodb.org/display/DOCS/Advanced+Queries#AdvancedQueries-ConditionalOperators%3A%3C%2C%3C%3D%2C%3E%2C%3E%3D">conditional operators</a>
in the Mongo docs.</p>
<p>Query for articles with no comments:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;comments&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">size</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/size/">$size operator</a>
in the Mongo docs.</p>
<p>Query for users that have a login field before it was renamed to
username:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;login&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">exists</span><span class="p">(</span><span class="k">true</span><span class="p">);</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/exists/">$exists operator</a>
in the Mongo docs.</p>
<p>Query for users that have a type field that is of integer bson
type:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;type&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">type</span><span class="p">(</span><span class="s1">&#39;integer&#39;</span><span class="p">);</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/type/">$type operator</a>
in the Mongo docs.</p>
<p>Query for users that are in all the specified Groups:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;groups&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">all</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;Group 1&#39;</span><span class="p">,</span> <span class="s1">&#39;Group 2&#39;</span><span class="p">));</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/all/">$all operator</a>
in the Mongo docs.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Transaction&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;field&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">mod</span><span class="p">(</span><span class="s1">&#39;field&#39;</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/mod/">$mod operator</a> in the Mongo docs.</p>
<p>Query for users who have subscribed or are in a trial.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">);</span>
<span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">addOr</span><span class="p">(</span><span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">expr</span><span class="p">()</span><span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;subscriber&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="k">true</span><span class="p">));</span>
<span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">addOr</span><span class="p">(</span><span class="nv">$qb</span><span class="o">-&gt;</span><span class="na">expr</span><span class="p">()</span><span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;inTrial&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="k">true</span><span class="p">));</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/or/">$or operator</a> in the Mongo docs.</p>
<p>The <code class="docutils literal"><span class="pre">references()</span></code> method may be used to query the owning side of a
<a class="reference internal" href="annotations-reference.html#annotations-reference-reference-one"><span class="std std-ref">&#64;ReferenceOne</span></a> relationship. In the
following example, we query for all articles written by a particular user.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="c1">// Suppose $user has already been fetched from the database</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;user&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">references</span><span class="p">(</span><span class="nv">$user</span><span class="p">);</span>
</pre></div>
</div>
<p>The <code class="docutils literal"><span class="pre">includesReferenceTo()</span></code> method may be used to query the owning side of a
<a class="reference internal" href="annotations-reference.html#annotations-reference-reference-many"><span class="std std-ref">&#64;ReferenceMany</span></a> relationship. In
the following example, we query for the user(s) that have access to a particular
account.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="c1">// Suppose $account has already been fetched from the database</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;accounts&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">includesReferenceTo</span><span class="p">(</span><span class="nv">$account</span><span class="p">);</span>
</pre></div>
</div>
</div>
<div class="section" id="text-search">
<h3>Text Search<a class="headerlink" href="#text-search" title="Permalink to this headline"></a></h3>
<p>You can use the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/query/text/">$text operator</a>
to run a text search against a field with a text index. To do so, create a
document with a text index:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="sd">/**</span>
<span class="sd"> * @Document</span>
<span class="sd"> * @Index(keys={&quot;description&quot;=&quot;text&quot;})</span>
<span class="sd"> */</span>
<span class="k">class</span> <span class="nc">Document</span>
<span class="p">{</span>
<span class="sd">/** @Id */</span>
<span class="k">public</span> <span class="nv">$id</span><span class="p">;</span>
<span class="sd">/** @Field(type=&quot;string&quot;) */</span>
<span class="k">public</span> <span class="nv">$description</span><span class="p">;</span>
<span class="sd">/** @Field(type=&quot;float&quot;) @NotSaved */</span>
<span class="k">public</span> <span class="nv">$score</span><span class="p">;</span>
<span class="p">}</span>
</pre></div>
</div>
<p>You can then run queries using the text operator:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="c1">// Run a text search against the index</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Document&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">text</span><span class="p">(</span><span class="s1">&#39;words you are looking for&#39;</span><span class="p">);</span>
</pre></div>
</div>
<p>To fetch the calculated score for the text search, use the <code class="docutils literal"><span class="pre">selectMeta()</span></code>
method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="c1">// Run a text search against the index</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Document&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">selectMeta</span><span class="p">(</span><span class="s1">&#39;score&#39;</span><span class="p">,</span> <span class="s1">&#39;textScore&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">text</span><span class="p">(</span><span class="s1">&#39;words you are looking for&#39;</span><span class="p">);</span>
</pre></div>
</div>
<p>You can also change the language used for stemming using the <code class="docutils literal"><span class="pre">language()</span></code>
method:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="c1">// Run a text search against the index</span>
<span class="nv">$qb</span> <span class="o">=</span> <span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Document&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">language</span><span class="p">(</span><span class="s1">&#39;it&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">text</span><span class="p">(</span><span class="s1">&#39;parole che stai cercando&#39;</span><span class="p">);</span>
</pre></div>
</div>
</div>
<div class="section" id="update-queries">
<h3>Update Queries<a class="headerlink" href="#update-queries" title="Permalink to this headline"></a></h3>
<p>Doctrine also supports executing atomic update queries using the <cite>QueryBuilder</cite>
object. You can use the conditional operations in combination with the ability to
change document field values atomically. Additionally if you are modifying a field
that is a reference you can pass managed document to the Builder and let ODM build
<code class="docutils literal"><span class="pre">DBRef</span></code> object for you.</p>
<p>You have several modifier operations
available to you that make it easy to update documents in Mongo:</p>
<ul class="simple">
<li><code class="docutils literal"><span class="pre">set($name,</span> <span class="pre">$value,</span> <span class="pre">$atomic</span> <span class="pre">=</span> <span class="pre">true)</span></code></li>
<li><code class="docutils literal"><span class="pre">setNewObj($newObj)</span></code></li>
<li><code class="docutils literal"><span class="pre">inc($name,</span> <span class="pre">$value)</span></code></li>
<li><code class="docutils literal"><span class="pre">unsetField($field)</span></code></li>
<li><code class="docutils literal"><span class="pre">push($field,</span> <span class="pre">$value)</span></code></li>
<li><code class="docutils literal"><span class="pre">pushAll($field,</span> <span class="pre">array</span> <span class="pre">$valueArray)</span></code></li>
<li><code class="docutils literal"><span class="pre">addToSet($field,</span> <span class="pre">$value)</span></code></li>
<li><code class="docutils literal"><span class="pre">addManyToSet($field,</span> <span class="pre">array</span> <span class="pre">$values)</span></code></li>
<li><code class="docutils literal"><span class="pre">popFirst($field)</span></code></li>
<li><code class="docutils literal"><span class="pre">popLast($field)</span></code></li>
<li><code class="docutils literal"><span class="pre">pull($field,</span> <span class="pre">$value)</span></code></li>
<li><code class="docutils literal"><span class="pre">pullAll($field,</span> <span class="pre">array</span> <span class="pre">$valueArray)</span></code></li>
</ul>
</div>
</div>
<div class="section" id="updating-multiple-documents">
<h2>Updating multiple documents<a class="headerlink" href="#updating-multiple-documents" title="Permalink to this headline"></a></h2>
<p>By default Mongo updates only one document unless <code class="docutils literal"><span class="pre">multi</span></code> option is provided and true.
In ODM the distinction is done by explicitly calling <code class="docutils literal"><span class="pre">updateMany()</span></code> method of the builder:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateMany</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;someField&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">set</span><span class="p">(</span><span class="s1">&#39;newValue&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;sgoettschkes&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last"><code class="docutils literal"><span class="pre">updateMany()</span></code> and <code class="docutils literal"><span class="pre">updateOne()</span></code> methods were introduced in version 1.2. If you're
using one of previous version you need to use <code class="docutils literal"><span class="pre">update()</span></code> combined with <code class="docutils literal"><span class="pre">multiple(true)</span></code>.</p>
</div>
</div>
<div class="section" id="modifier-operations">
<h2>Modifier Operations<a class="headerlink" href="#modifier-operations" title="Permalink to this headline"></a></h2>
<p>Change a users password:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateOne</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;password&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">set</span><span class="p">(</span><span class="s1">&#39;newpassword&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;jwage&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>If you want to just set the values of an entirely new object you
can do so by passing false as the third argument of <code class="docutils literal"><span class="pre">set()</span></code> to
tell it the update is not an atomic one:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateOne</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">set</span><span class="p">(</span><span class="s1">&#39;jwage&#39;</span><span class="p">,</span> <span class="k">false</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;password&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">set</span><span class="p">(</span><span class="s1">&#39;password&#39;</span><span class="p">,</span> <span class="k">false</span><span class="p">)</span>
<span class="c1">// ... set other remaining fields</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;jwage&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/set/">$set modifier</a>
in the Mongo docs.</p>
<p>You can set an entirely new object to update as well:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">setNewObj</span><span class="p">(</span><span class="k">array</span><span class="p">(</span>
<span class="s1">&#39;username&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;jwage&#39;</span><span class="p">,</span>
<span class="s1">&#39;password&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;password&#39;</span><span class="p">,</span>
<span class="c1">// ... other fields</span>
<span class="p">))</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;username&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;jwage&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Increment the value of a document:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Package&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;id&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;theid&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;downloads&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">inc</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/inc/">$inc modifier</a>
in the Mongo docs.</p>
<p>Unset the login field from users where the login field still
exists:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateMany</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;login&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">unsetField</span><span class="p">()</span><span class="o">-&gt;</span><span class="na">exists</span><span class="p">(</span><span class="k">true</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/unset/">$unset modifier</a>
in the Mongo docs.</p>
<p>Append new tag to the tags array:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateOne</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">push</span><span class="p">(</span><span class="s1">&#39;tag5&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;id&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;theid&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/push/">$push modifier</a>
in the Mongo docs.</p>
<p>Append new tags to the tags array:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateOne</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">pushAll</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;tag6&#39;</span><span class="p">,</span> <span class="s1">&#39;tag7&#39;</span><span class="p">))</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;id&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;theid&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/pushAll/">$pushAll modifier</a>
in the Mongo docs.</p>
<p>Add value to array only if its not in the array already:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateOne</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">addToSet</span><span class="p">(</span><span class="s1">&#39;tag1&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;id&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;theid&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/addToSet/">$addToSet modifier</a>
in the Mongo docs.</p>
<p>Add many values to the array only if they do not exist in the array
already:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateOne</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">addManyToSet</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;tag6&#39;</span><span class="p">,</span> <span class="s1">&#39;tag7&#39;</span><span class="p">))</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;id&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;theid&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="http://www.mongodb.org/display/DOCS/Updating#Updating-%24addManyToSet">$addManyToSet modifier</a>
in the Mongo docs.</p>
<p>Remove first element in an array:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateOne</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">popFirst</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;id&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;theid&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Remove last element in an array:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateOne</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">popLast</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;id&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="s1">&#39;theid&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/pop/">$pop modifier</a>
in the Mongo docs.</p>
<p>Remove all occurrences of value from array:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateMany</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">pull</span><span class="p">(</span><span class="s1">&#39;tag1&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/pull/">$pull modifier</a>
in the Mongo docs.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Article&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">updateMany</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">pullAll</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;tag1&#39;</span><span class="p">,</span> <span class="s1">&#39;tag2&#39;</span><span class="p">))</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>Read more about the
<a class="reference external" href="https://docs.mongodb.com/manual/reference/operator/update/pullAll/">$pullAll modifier</a>
in the Mongo docs.</p>
</div>
<div class="section" id="remove-queries">
<h2>Remove Queries<a class="headerlink" href="#remove-queries" title="Permalink to this headline"></a></h2>
<p>In addition to updating you can also issue queries to remove
documents from a collection. It works pretty much the same way as
everything else and you can use the conditional operations to
specify which documents you want to remove.</p>
<p>Here is an example where we remove users who have never logged in:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">remove</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;num_logins&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">equals</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
</div>
<div class="section" id="group-queries">
<h2>Group Queries<a class="headerlink" href="#group-queries" title="Permalink to this headline"></a></h2>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Due to deprecation of <code class="docutils literal"><span class="pre">group</span></code> command in MongoDB 3.4 the ODM
also deprecates its usage through Query Builder in 1.2. Please
use <a class="reference internal" href="aggregation-builder.html#aggregation-builder-group"><span class="std std-ref">$group stage</span></a> of the
Aggregation Builder instead.</p>
</div>
<p>The last type of supported query is a group query. It performs an
operation similar to SQL's GROUP BY command.</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$result</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">dm</span><span class="o">-&gt;</span><span class="na">createQueryBuilder</span><span class="p">(</span><span class="s1">&#39;Documents\User&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">group</span><span class="p">(</span><span class="k">array</span><span class="p">(),</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;count&#39;</span> <span class="o">=&gt;</span> <span class="mi">0</span><span class="p">))</span>
<span class="o">-&gt;</span><span class="na">reduce</span><span class="p">(</span><span class="s1">&#39;function (obj, prev) { prev.count++; }&#39;</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">field</span><span class="p">(</span><span class="s1">&#39;a&#39;</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">gt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="o">-&gt;</span><span class="na">getQuery</span><span class="p">()</span>
<span class="o">-&gt;</span><span class="na">execute</span><span class="p">();</span>
</pre></div>
</div>
<p>This is the same as if we were to do the group with the raw PHP
code:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$reduce</span> <span class="o">=</span> <span class="s1">&#39;function (obj, prev) { prev.count++; }&#39;</span><span class="p">;</span>
<span class="nv">$condition</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;a&#39;</span> <span class="o">=&gt;</span> <span class="k">array</span><span class="p">(</span> <span class="s1">&#39;$gt&#39;</span> <span class="o">=&gt;</span> <span class="mi">1</span><span class="p">));</span>
<span class="nv">$result</span> <span class="o">=</span> <span class="nv">$collection</span><span class="o">-&gt;</span><span class="na">group</span><span class="p">(</span><span class="k">array</span><span class="p">(),</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;count&#39;</span> <span class="o">=&gt;</span> <span class="mi">0</span><span class="p">),</span> <span class="nv">$reduce</span><span class="p">,</span> <span class="nv">$condition</span><span class="p">);</span>
</pre></div>
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<h3><a href="../index.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Query Builder API</a><ul>
<li><a class="reference internal" href="#finding-documents">Finding Documents</a></li>
<li><a class="reference internal" href="#creating-a-query-builder">Creating a Query Builder</a><ul>
<li><a class="reference internal" href="#executing-queries">Executing Queries</a></li>
<li><a class="reference internal" href="#debugging-queries">Debugging Queries</a></li>
<li><a class="reference internal" href="#eager-cursors">Eager Cursors</a></li>
<li><a class="reference internal" href="#getting-single-result">Getting Single Result</a></li>
<li><a class="reference internal" href="#selecting-fields">Selecting Fields</a></li>
<li><a class="reference internal" href="#index-hints">Index hints</a></li>
<li><a class="reference internal" href="#selecting-distinct-values">Selecting Distinct Values</a></li>
<li><a class="reference internal" href="#refreshing-documents">Refreshing Documents</a></li>
<li><a class="reference internal" href="#fetching-documents-as-read-only">Fetching Documents as Read-Only</a></li>
<li><a class="reference internal" href="#disabling-hydration">Disabling Hydration</a></li>
<li><a class="reference internal" href="#limiting-results">Limiting Results</a></li>
<li><a class="reference internal" href="#sorting-results">Sorting Results</a></li>
<li><a class="reference internal" href="#map-reduce">Map Reduce</a></li>
<li><a class="reference internal" href="#conditional-operators">Conditional Operators</a></li>
<li><a class="reference internal" href="#text-search">Text Search</a></li>
<li><a class="reference internal" href="#update-queries">Update Queries</a></li>
</ul>
</li>
<li><a class="reference internal" href="#updating-multiple-documents">Updating multiple documents</a></li>
<li><a class="reference internal" href="#modifier-operations">Modifier Operations</a></li>
<li><a class="reference internal" href="#remove-queries">Remove Queries</a></li>
<li><a class="reference internal" href="#group-queries">Group Queries</a></li>
</ul>
</li>
</ul>
<h3>This Page</h3>
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