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<div class="subTitle">org.apache.geode.cache.query</div>
<h2 title="Interface CqQuery" class="title">Interface CqQuery</h2>
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<pre>public interface <span class="typeNameLabel">CqQuery</span></pre>
<div class="block">Interface for continuous query. This provides methods for managing a CQ once it is created
through the QueryService. The methods allow you to retrieve CQ related information, operate on CQ
like execute, stop, close and get the state of the CQ.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>GemFire 5.5</dd>
</dl>
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<h3>Method Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#close--">close</a></span>()</code>
<div class="block">Close the CQ and stop execution.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#execute--">execute</a></span>()</code>
<div class="block">Start executing the CQ or if this CQ is stopped earlier, resumes execution of the CQ.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>&lt;E&gt;&nbsp;<a href="../../../../../org/apache/geode/cache/query/CqResults.html" title="interface in org.apache.geode.cache.query">CqResults</a>&lt;E&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#executeWithInitialResults--">executeWithInitialResults</a></span>()</code>
<div class="block">Starts executing the CQ or, if the CQ is in a stopped state, resumes execution.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/geode/cache/query/CqAttributes.html" title="interface in org.apache.geode.cache.query">CqAttributes</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#getCqAttributes--">getCqAttributes</a></span>()</code>
<div class="block">Get CqAttributes for this CQ.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/geode/cache/query/CqAttributesMutator.html" title="interface in org.apache.geode.cache.query">CqAttributesMutator</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#getCqAttributesMutator--">getCqAttributesMutator</a></span>()</code>
<div class="block">Get CqAttributesMutator for this CQ.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#getName--">getName</a></span>()</code>
<div class="block">Get the name of the CQ.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/geode/cache/query/Query.html" title="interface in org.apache.geode.cache.query">Query</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#getQuery--">getQuery</a></span>()</code>
<div class="block">Get the query object generated for this CQs query.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#getQueryString--">getQueryString</a></span>()</code>
<div class="block">Get the original query string that was specified with CQ.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/geode/cache/query/CqState.html" title="interface in org.apache.geode.cache.query">CqState</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#getState--">getState</a></span>()</code>
<div class="block">Get the state of the CQ in CqState object form.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/geode/cache/query/CqStatistics.html" title="interface in org.apache.geode.cache.query">CqStatistics</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#getStatistics--">getStatistics</a></span>()</code>
<div class="block">Get statistics information for this CQ.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#isClosed--">isClosed</a></span>()</code>
<div class="block">This allows to check if the CQ is closed.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#isDurable--">isDurable</a></span>()</code>
<div class="block">This allows to check if the CQ is durable.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#isRunning--">isRunning</a></span>()</code>
<div class="block">This allows to check if the CQ is in running or active.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#isStopped--">isStopped</a></span>()</code>
<div class="block">This allows to check if the CQ is in stopped.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/query/CqQuery.html#stop--">stop</a></span>()</code>
<div class="block">Stops this CqQuery without releasing resources.</div>
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<h4>getQueryString</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getQueryString()</pre>
<div class="block">Get the original query string that was specified with CQ.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>String the query string associated with CQ.</dd>
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<h4>getQuery</h4>
<pre><a href="../../../../../org/apache/geode/cache/query/Query.html" title="interface in org.apache.geode.cache.query">Query</a>&nbsp;getQuery()</pre>
<div class="block">Get the query object generated for this CQs query.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Query query object for the query string.</dd>
</dl>
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<h4>getName</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getName()</pre>
<div class="block">Get the name of the CQ.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the name of the CQ.</dd>
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<pre><a href="../../../../../org/apache/geode/cache/query/CqStatistics.html" title="interface in org.apache.geode.cache.query">CqStatistics</a>&nbsp;getStatistics()</pre>
<div class="block">Get statistics information for this CQ.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>CqStatistics CQ statistics object.</dd>
</dl>
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<pre><a href="../../../../../org/apache/geode/cache/query/CqAttributes.html" title="interface in org.apache.geode.cache.query">CqAttributes</a>&nbsp;getCqAttributes()</pre>
<div class="block">Get CqAttributes for this CQ.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>CqAttributes cqAttribute set with this CqQuery.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/apache/geode/cache/query/CqAttributes.html" title="interface in org.apache.geode.cache.query"><code>CqAttributes</code></a></dd>
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<pre><a href="../../../../../org/apache/geode/cache/query/CqAttributesMutator.html" title="interface in org.apache.geode.cache.query">CqAttributesMutator</a>&nbsp;getCqAttributesMutator()</pre>
<div class="block">Get CqAttributesMutator for this CQ.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>CqAttributesMutator.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/apache/geode/cache/query/CqAttributesMutator.html" title="interface in org.apache.geode.cache.query"><code>CqAttributesMutator</code></a></dd>
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<h4>executeWithInitialResults</h4>
<pre>&lt;E&gt;&nbsp;<a href="../../../../../org/apache/geode/cache/query/CqResults.html" title="interface in org.apache.geode.cache.query">CqResults</a>&lt;E&gt;&nbsp;executeWithInitialResults()
throws <a href="../../../../../org/apache/geode/cache/query/CqClosedException.html" title="class in org.apache.geode.cache.query">CqClosedException</a>,
<a href="../../../../../org/apache/geode/cache/query/RegionNotFoundException.html" title="class in org.apache.geode.cache.query">RegionNotFoundException</a>,
<a href="../../../../../org/apache/geode/cache/query/CqException.html" title="class in org.apache.geode.cache.query">CqException</a></pre>
<div class="block">Starts executing the CQ or, if the CQ is in a stopped state, resumes execution. Gets the
current resultset for the CQ query. The CQ is executed on the primary server, and then
redundant servers as needed. If execution fails on all servers, a CqException is thrown. If the
query is complex and the data set is large, this execution may take a long time, which may
cause a socket read timeout in the client. To allow adequate time, you may need to set a longer
pool read-timeout in the client.</div>
<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>E</code> - the type contained in the returned CqResults</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>SelectResults resultset obtained by executing the query.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/geode/cache/query/CqClosedException.html" title="class in org.apache.geode.cache.query">CqClosedException</a></code> - if this CqQuery is closed.</dd>
<dd><code><a href="../../../../../org/apache/geode/cache/query/RegionNotFoundException.html" title="class in org.apache.geode.cache.query">RegionNotFoundException</a></code> - if the specified region in the query string is not found.</dd>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if the CqQuery is in the RUNNING state already.</dd>
<dd><code><a href="../../../../../org/apache/geode/cache/query/CqException.html" title="class in org.apache.geode.cache.query">CqException</a></code> - if failed to execute and get initial results.</dd>
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<h4>execute</h4>
<pre>void&nbsp;execute()
throws <a href="../../../../../org/apache/geode/cache/query/CqClosedException.html" title="class in org.apache.geode.cache.query">CqClosedException</a>,
<a href="../../../../../org/apache/geode/cache/query/RegionNotFoundException.html" title="class in org.apache.geode.cache.query">RegionNotFoundException</a>,
<a href="../../../../../org/apache/geode/cache/query/CqException.html" title="class in org.apache.geode.cache.query">CqException</a></pre>
<div class="block">Start executing the CQ or if this CQ is stopped earlier, resumes execution of the CQ. The CQ is
executed on primary and redundant servers, if CQ execution fails on all the server then a
CqException is thrown.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/geode/cache/query/CqClosedException.html" title="class in org.apache.geode.cache.query">CqClosedException</a></code> - if this CqQuery is closed.</dd>
<dd><code><a href="../../../../../org/apache/geode/cache/query/RegionNotFoundException.html" title="class in org.apache.geode.cache.query">RegionNotFoundException</a></code> - if the specified region in the query string is not found.</dd>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if the CqQuery is in the RUNNING state already.</dd>
<dd><code><a href="../../../../../org/apache/geode/cache/query/CqException.html" title="class in org.apache.geode.cache.query">CqException</a></code> - if failed to execute.</dd>
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<h4>stop</h4>
<pre>void&nbsp;stop()
throws <a href="../../../../../org/apache/geode/cache/query/CqClosedException.html" title="class in org.apache.geode.cache.query">CqClosedException</a>,
<a href="../../../../../org/apache/geode/cache/query/CqException.html" title="class in org.apache.geode.cache.query">CqException</a></pre>
<div class="block">Stops this CqQuery without releasing resources. Puts the CqQuery into the STOPPED state. Can be
resumed by calling execute or executeWithInitialResults.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if the CqQuery is in the STOPPED state already.</dd>
<dd><code><a href="../../../../../org/apache/geode/cache/query/CqClosedException.html" title="class in org.apache.geode.cache.query">CqClosedException</a></code> - if the CQ is CLOSED.</dd>
<dd><code><a href="../../../../../org/apache/geode/cache/query/CqException.html" title="class in org.apache.geode.cache.query">CqException</a></code> - if failed to stop.</dd>
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<pre><a href="../../../../../org/apache/geode/cache/query/CqState.html" title="interface in org.apache.geode.cache.query">CqState</a>&nbsp;getState()</pre>
<div class="block">Get the state of the CQ in CqState object form. CqState supports methods like isClosed(),
isRunning(), isStopped().</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>CqState state object of the CQ.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/apache/geode/cache/query/CqState.html" title="interface in org.apache.geode.cache.query"><code>CqState</code></a></dd>
</dl>
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<h4>close</h4>
<pre>void&nbsp;close()
throws <a href="../../../../../org/apache/geode/cache/query/CqClosedException.html" title="class in org.apache.geode.cache.query">CqClosedException</a>,
<a href="../../../../../org/apache/geode/cache/query/CqException.html" title="class in org.apache.geode.cache.query">CqException</a></pre>
<div class="block">Close the CQ and stop execution. Releases the resources associated with this CqQuery.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/geode/cache/query/CqClosedException.html" title="class in org.apache.geode.cache.query">CqClosedException</a></code> - Further calls on this CqQuery instance except for getState() or
getName().</dd>
<dd><code><a href="../../../../../org/apache/geode/cache/query/CqException.html" title="class in org.apache.geode.cache.query">CqException</a></code> - - if failure during cleanup of CQ resources.</dd>
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<pre>boolean&nbsp;isRunning()</pre>
<div class="block">This allows to check if the CQ is in running or active.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>boolean true if running, false otherwise</dd>
</dl>
</li>
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<pre>boolean&nbsp;isStopped()</pre>
<div class="block">This allows to check if the CQ is in stopped.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>boolean true if stopped, false otherwise</dd>
</dl>
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<h4>isClosed</h4>
<pre>boolean&nbsp;isClosed()</pre>
<div class="block">This allows to check if the CQ is closed.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>boolean true if closed, false otherwise</dd>
</dl>
</li>
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<h4>isDurable</h4>
<pre>boolean&nbsp;isDurable()</pre>
<div class="block">This allows to check if the CQ is durable.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>boolean true if durable, false otherwise</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>GemFire 5.5</dd>
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