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<div class="subTitle">org.apache.cayenne.query</div>
<h2 title="Class QueryChain" class="title">Class QueryChain</h2>
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<li>org.apache.cayenne.query.QueryChain</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a></dd>
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<pre>public class <span class="typeNameLabel">QueryChain</span>
extends <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a></pre>
<div class="block">A Query decorator for a collection of other queries. Note that QueryChain will always
return DataRows (that is if it returns data), as it has no way of knowing how to
convert the results to objects.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.2</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../serialized-form.html#org.apache.cayenne.query.QueryChain">Serialized Form</a></dd>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#chain">chain</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../org/apache/cayenne/map/DataMap.html" title="class in org.apache.cayenne.map">DataMap</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#dataMap">dataMap</a></span></code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/7/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/cayenne/query/QueryChain.html#name">name</a></span></code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#QueryChain--">QueryChain</a></span>()</code>
<div class="block">Creates an empty QueryChain.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#QueryChain-java.util.Collection-">QueryChain</a></span>(<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&gt;&nbsp;queries)</code>
<div class="block">Creates a new QueryChain with a collection of Queries.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#QueryChain-org.apache.cayenne.query.Query:A-">QueryChain</a></span>(<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>[]&nbsp;queries)</code>
<div class="block">Creates a new QueryChain out of an array of queries.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#addQuery-org.apache.cayenne.query.Query-">addQuery</a></span>(<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&nbsp;query)</code>
<div class="block">Adds a query to the chain.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/cayenne/query/SQLAction.html" title="interface in org.apache.cayenne.query">SQLAction</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#createSQLAction-org.apache.cayenne.query.SQLActionVisitor-">createSQLAction</a></span>(<a href="../../../../org/apache/cayenne/query/SQLActionVisitor.html" title="interface in org.apache.cayenne.query">SQLActionVisitor</a>&nbsp;visitor)</code>
<div class="block">Throws an exception as execution should've been delegated to the queries contained
in the chain.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/cayenne/map/DataMap.html" title="class in org.apache.cayenne.map">DataMap</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#getDataMap--">getDataMap</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/cayenne/query/QueryMetadata.html" title="interface in org.apache.cayenne.query">QueryMetadata</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#getMetaData-org.apache.cayenne.map.EntityResolver-">getMetaData</a></span>(<a href="../../../../org/apache/cayenne/map/EntityResolver.html" title="class in org.apache.cayenne.map">EntityResolver</a>&nbsp;resolver)</code>
<div class="block">Returns default metadata.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/7/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/cayenne/query/QueryChain.html#getName--">getName</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#isEmpty--">isEmpty</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#removeQuery-org.apache.cayenne.query.Query-">removeQuery</a></span>(<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&nbsp;query)</code>
<div class="block">Removes a query from the chain, returning true if the query was indeed present in
the chain and was removed.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#route-org.apache.cayenne.query.QueryRouter-org.apache.cayenne.map.EntityResolver-org.apache.cayenne.query.Query-">route</a></span>(<a href="../../../../org/apache/cayenne/query/QueryRouter.html" title="interface in org.apache.cayenne.query">QueryRouter</a>&nbsp;router,
<a href="../../../../org/apache/cayenne/map/EntityResolver.html" title="class in org.apache.cayenne.map">EntityResolver</a>&nbsp;resolver,
<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&nbsp;substitutedQuery)</code>
<div class="block">Delegates routing to each individual query in the chain.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#setDataMap-org.apache.cayenne.map.DataMap-">setDataMap</a></span>(<a href="../../../../org/apache/cayenne/map/DataMap.html" title="class in org.apache.cayenne.map">DataMap</a>&nbsp;dataMap)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/query/QueryChain.html#setName-java.lang.String-">setName</a></span>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Field Detail</h3>
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<h4>chain</h4>
<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&gt; chain</pre>
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<h4>name</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
protected&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<h4>dataMap</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
protected&nbsp;<a href="../../../../org/apache/cayenne/map/DataMap.html" title="class in org.apache.cayenne.map">DataMap</a> dataMap</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>3.1</dd>
</dl>
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<h3>Constructor Detail</h3>
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<h4>QueryChain</h4>
<pre>public&nbsp;QueryChain()</pre>
<div class="block">Creates an empty QueryChain.</div>
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<pre>public&nbsp;QueryChain(<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>[]&nbsp;queries)</pre>
<div class="block">Creates a new QueryChain out of an array of queries.</div>
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<h4>QueryChain</h4>
<pre>public&nbsp;QueryChain(<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&gt;&nbsp;queries)</pre>
<div class="block">Creates a new QueryChain with a collection of Queries.</div>
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<a name="addQuery-org.apache.cayenne.query.Query-">
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<h4>addQuery</h4>
<pre>public&nbsp;void&nbsp;addQuery(<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&nbsp;query)</pre>
<div class="block">Adds a query to the chain.</div>
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<h4>removeQuery</h4>
<pre>public&nbsp;boolean&nbsp;removeQuery(<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&nbsp;query)</pre>
<div class="block">Removes a query from the chain, returning true if the query was indeed present in
the chain and was removed.</div>
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<h4>isEmpty</h4>
<pre>public&nbsp;boolean&nbsp;isEmpty()</pre>
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<h4>route</h4>
<pre>public&nbsp;void&nbsp;route(<a href="../../../../org/apache/cayenne/query/QueryRouter.html" title="interface in org.apache.cayenne.query">QueryRouter</a>&nbsp;router,
<a href="../../../../org/apache/cayenne/map/EntityResolver.html" title="class in org.apache.cayenne.map">EntityResolver</a>&nbsp;resolver,
<a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a>&nbsp;substitutedQuery)</pre>
<div class="block">Delegates routing to each individual query in the chain. If there is no queries,
this method does nothing.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/cayenne/query/Query.html#route-org.apache.cayenne.query.QueryRouter-org.apache.cayenne.map.EntityResolver-org.apache.cayenne.query.Query-">route</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a></code></dd>
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<h4>createSQLAction</h4>
<pre>public&nbsp;<a href="../../../../org/apache/cayenne/query/SQLAction.html" title="interface in org.apache.cayenne.query">SQLAction</a>&nbsp;createSQLAction(<a href="../../../../org/apache/cayenne/query/SQLActionVisitor.html" title="interface in org.apache.cayenne.query">SQLActionVisitor</a>&nbsp;visitor)</pre>
<div class="block">Throws an exception as execution should've been delegated to the queries contained
in the chain.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/cayenne/query/Query.html#createSQLAction-org.apache.cayenne.query.SQLActionVisitor-">createSQLAction</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a></code></dd>
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<a name="getName--">
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<h4>getName</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getName()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/cayenne/query/Query.html#getName--">Query</a></code></span></div>
<div class="block">Returns a symbolic name of the query. The name is normally used as a key to find
queries stored in the DataMap.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/cayenne/query/Query.html#getName--">getName</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a></code></dd>
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<h4>setName</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public&nbsp;void&nbsp;setName(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<h4>getDataMap</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public&nbsp;<a href="../../../../org/apache/cayenne/map/DataMap.html" title="class in org.apache.cayenne.map">DataMap</a>&nbsp;getDataMap()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/cayenne/query/Query.html#getDataMap--">getDataMap</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a></code></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>3.1</dd>
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<h4>setDataMap</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public&nbsp;void&nbsp;setDataMap(<a href="../../../../org/apache/cayenne/map/DataMap.html" title="class in org.apache.cayenne.map">DataMap</a>&nbsp;dataMap)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>3.1</dd>
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<h4>getMetaData</h4>
<pre>public&nbsp;<a href="../../../../org/apache/cayenne/query/QueryMetadata.html" title="interface in org.apache.cayenne.query">QueryMetadata</a>&nbsp;getMetaData(<a href="../../../../org/apache/cayenne/map/EntityResolver.html" title="class in org.apache.cayenne.map">EntityResolver</a>&nbsp;resolver)</pre>
<div class="block">Returns default metadata.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/cayenne/query/Query.html#getMetaData-org.apache.cayenne.map.EntityResolver-">getMetaData</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/cayenne/query/Query.html" title="interface in org.apache.cayenne.query">Query</a></code></dd>
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