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<div class="subTitle">jakarta.persistence.criteria</div>
<h2 title="Interface Join" class="title">Interface Join&lt;Z,X&gt;</h2>
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<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>Z</code> - the source type of the join</dd>
<dd><code>X</code> - the target type of the join</dd>
</dl>
<dl>
<dt>All Superinterfaces:</dt>
<dd><a href="../../../jakarta/persistence/criteria/Expression.html" title="interface in jakarta.persistence.criteria">Expression</a>&lt;X&gt;, <a href="../../../jakarta/persistence/criteria/FetchParent.html" title="interface in jakarta.persistence.criteria">FetchParent</a>&lt;Z,X&gt;, <a href="../../../jakarta/persistence/criteria/From.html" title="interface in jakarta.persistence.criteria">From</a>&lt;Z,X&gt;, <a href="../../../jakarta/persistence/criteria/Path.html" title="interface in jakarta.persistence.criteria">Path</a>&lt;X&gt;, <a href="../../../jakarta/persistence/criteria/Selection.html" title="interface in jakarta.persistence.criteria">Selection</a>&lt;X&gt;, <a href="../../../jakarta/persistence/TupleElement.html" title="interface in jakarta.persistence">TupleElement</a>&lt;X&gt;</dd>
</dl>
<dl>
<dt>All Known Subinterfaces:</dt>
<dd><a href="../../../jakarta/persistence/criteria/CollectionJoin.html" title="interface in jakarta.persistence.criteria">CollectionJoin</a>&lt;Z,E&gt;, <a href="../../../jakarta/persistence/criteria/ListJoin.html" title="interface in jakarta.persistence.criteria">ListJoin</a>&lt;Z,E&gt;, <a href="../../../jakarta/persistence/criteria/MapJoin.html" title="interface in jakarta.persistence.criteria">MapJoin</a>&lt;Z,K,V&gt;, <a href="../../../jakarta/persistence/criteria/PluralJoin.html" title="interface in jakarta.persistence.criteria">PluralJoin</a>&lt;Z,C,E&gt;, <a href="../../../jakarta/persistence/criteria/SetJoin.html" title="interface in jakarta.persistence.criteria">SetJoin</a>&lt;Z,E&gt;</dd>
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<pre>public interface <span class="typeNameLabel">Join&lt;Z,X&gt;</span>
extends <a href="../../../jakarta/persistence/criteria/From.html" title="interface in jakarta.persistence.criteria">From</a>&lt;Z,X&gt;</pre>
<div class="block">A join to an entity, embeddable, or basic type.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.0</dd>
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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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<td class="colFirst"><code><a href="../../../jakarta/persistence/metamodel/Attribute.html" title="interface in jakarta.persistence.metamodel">Attribute</a>&lt;? super <a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">Z</a>,?&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../jakarta/persistence/criteria/Join.html#getAttribute--">getAttribute</a></span>()</code>
<div class="block">Return the metamodel attribute corresponding to the join.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../jakarta/persistence/criteria/JoinType.html" title="enum in jakarta.persistence.criteria">JoinType</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../jakarta/persistence/criteria/Join.html#getJoinType--">getJoinType</a></span>()</code>
<div class="block">Return the join type.</div>
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<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../jakarta/persistence/criteria/Predicate.html" title="interface in jakarta.persistence.criteria">Predicate</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../jakarta/persistence/criteria/Join.html#getOn--">getOn</a></span>()</code>
<div class="block">Return the predicate that corresponds to the ON
restriction(s) on the join, or null if no ON condition
has been specified.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../jakarta/persistence/criteria/From.html" title="interface in jakarta.persistence.criteria">From</a>&lt;?,<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">Z</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../jakarta/persistence/criteria/Join.html#getParent--">getParent</a></span>()</code>
<div class="block">Return the parent of the join.</div>
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<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../jakarta/persistence/criteria/Join.html" title="interface in jakarta.persistence.criteria">Join</a>&lt;<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">Z</a>,<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">X</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../jakarta/persistence/criteria/Join.html#on-jakarta.persistence.criteria.Expression-">on</a></span>(<a href="../../../jakarta/persistence/criteria/Expression.html" title="interface in jakarta.persistence.criteria">Expression</a>&lt;java.lang.Boolean&gt;&nbsp;restriction)</code>
<div class="block">Modify the join to restrict the result according to the
specified ON condition and return the join object.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../jakarta/persistence/criteria/Join.html" title="interface in jakarta.persistence.criteria">Join</a>&lt;<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">Z</a>,<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">X</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../jakarta/persistence/criteria/Join.html#on-jakarta.persistence.criteria.Predicate...-">on</a></span>(<a href="../../../jakarta/persistence/criteria/Predicate.html" title="interface in jakarta.persistence.criteria">Predicate</a>...&nbsp;restrictions)</code>
<div class="block">Modify the join to restrict the result according to the
specified ON condition and return the join object.</div>
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<h3>Methods inherited from interface&nbsp;jakarta.persistence.criteria.<a href="../../../jakarta/persistence/criteria/From.html" title="interface in jakarta.persistence.criteria">From</a></h3>
<code><a href="../../../jakarta/persistence/criteria/From.html#getCorrelationParent--">getCorrelationParent</a>, <a href="../../../jakarta/persistence/criteria/From.html#getJoins--">getJoins</a>, <a href="../../../jakarta/persistence/criteria/From.html#isCorrelated--">isCorrelated</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.CollectionAttribute-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.CollectionAttribute-jakarta.persistence.criteria.JoinType-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.ListAttribute-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.ListAttribute-jakarta.persistence.criteria.JoinType-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.MapAttribute-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.MapAttribute-jakarta.persistence.criteria.JoinType-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.SetAttribute-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.SetAttribute-jakarta.persistence.criteria.JoinType-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.SingularAttribute-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-jakarta.persistence.metamodel.SingularAttribute-jakarta.persistence.criteria.JoinType-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-java.lang.String-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#join-java.lang.String-jakarta.persistence.criteria.JoinType-">join</a>, <a href="../../../jakarta/persistence/criteria/From.html#joinCollection-java.lang.String-">joinCollection</a>, <a href="../../../jakarta/persistence/criteria/From.html#joinCollection-java.lang.String-jakarta.persistence.criteria.JoinType-">joinCollection</a>, <a href="../../../jakarta/persistence/criteria/From.html#joinList-java.lang.String-">joinList</a>, <a href="../../../jakarta/persistence/criteria/From.html#joinList-java.lang.String-jakarta.persistence.criteria.JoinType-">joinList</a>, <a href="../../../jakarta/persistence/criteria/From.html#joinMap-java.lang.String-">joinMap</a>, <a href="../../../jakarta/persistence/criteria/From.html#joinMap-java.lang.String-jakarta.persistence.criteria.JoinType-">joinMap</a>, <a href="../../../jakarta/persistence/criteria/From.html#joinSet-java.lang.String-">joinSet</a>, <a href="../../../jakarta/persistence/criteria/From.html#joinSet-java.lang.String-jakarta.persistence.criteria.JoinType-">joinSet</a></code></li>
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<h3>Methods inherited from interface&nbsp;jakarta.persistence.criteria.<a href="../../../jakarta/persistence/criteria/Path.html" title="interface in jakarta.persistence.criteria">Path</a></h3>
<code><a href="../../../jakarta/persistence/criteria/Path.html#get-jakarta.persistence.metamodel.MapAttribute-">get</a>, <a href="../../../jakarta/persistence/criteria/Path.html#get-jakarta.persistence.metamodel.PluralAttribute-">get</a>, <a href="../../../jakarta/persistence/criteria/Path.html#get-jakarta.persistence.metamodel.SingularAttribute-">get</a>, <a href="../../../jakarta/persistence/criteria/Path.html#get-java.lang.String-">get</a>, <a href="../../../jakarta/persistence/criteria/Path.html#getModel--">getModel</a>, <a href="../../../jakarta/persistence/criteria/Path.html#getParentPath--">getParentPath</a>, <a href="../../../jakarta/persistence/criteria/Path.html#type--">type</a></code></li>
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<h3>Methods inherited from interface&nbsp;jakarta.persistence.criteria.<a href="../../../jakarta/persistence/criteria/Expression.html" title="interface in jakarta.persistence.criteria">Expression</a></h3>
<code><a href="../../../jakarta/persistence/criteria/Expression.html#as-java.lang.Class-">as</a>, <a href="../../../jakarta/persistence/criteria/Expression.html#in-java.util.Collection-">in</a>, <a href="../../../jakarta/persistence/criteria/Expression.html#in-jakarta.persistence.criteria.Expression...-">in</a>, <a href="../../../jakarta/persistence/criteria/Expression.html#in-jakarta.persistence.criteria.Expression-">in</a>, <a href="../../../jakarta/persistence/criteria/Expression.html#in-java.lang.Object...-">in</a>, <a href="../../../jakarta/persistence/criteria/Expression.html#isNotNull--">isNotNull</a>, <a href="../../../jakarta/persistence/criteria/Expression.html#isNull--">isNull</a></code></li>
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<h3>Methods inherited from interface&nbsp;jakarta.persistence.criteria.<a href="../../../jakarta/persistence/criteria/Selection.html" title="interface in jakarta.persistence.criteria">Selection</a></h3>
<code><a href="../../../jakarta/persistence/criteria/Selection.html#alias-java.lang.String-">alias</a>, <a href="../../../jakarta/persistence/criteria/Selection.html#getCompoundSelectionItems--">getCompoundSelectionItems</a>, <a href="../../../jakarta/persistence/criteria/Selection.html#isCompoundSelection--">isCompoundSelection</a></code></li>
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<h3>Methods inherited from interface&nbsp;jakarta.persistence.<a href="../../../jakarta/persistence/TupleElement.html" title="interface in jakarta.persistence">TupleElement</a></h3>
<code><a href="../../../jakarta/persistence/TupleElement.html#getAlias--">getAlias</a>, <a href="../../../jakarta/persistence/TupleElement.html#getJavaType--">getJavaType</a></code></li>
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<h3>Methods inherited from interface&nbsp;jakarta.persistence.criteria.<a href="../../../jakarta/persistence/criteria/FetchParent.html" title="interface in jakarta.persistence.criteria">FetchParent</a></h3>
<code><a href="../../../jakarta/persistence/criteria/FetchParent.html#fetch-jakarta.persistence.metamodel.PluralAttribute-">fetch</a>, <a href="../../../jakarta/persistence/criteria/FetchParent.html#fetch-jakarta.persistence.metamodel.PluralAttribute-jakarta.persistence.criteria.JoinType-">fetch</a>, <a href="../../../jakarta/persistence/criteria/FetchParent.html#fetch-jakarta.persistence.metamodel.SingularAttribute-">fetch</a>, <a href="../../../jakarta/persistence/criteria/FetchParent.html#fetch-jakarta.persistence.metamodel.SingularAttribute-jakarta.persistence.criteria.JoinType-">fetch</a>, <a href="../../../jakarta/persistence/criteria/FetchParent.html#fetch-java.lang.String-">fetch</a>, <a href="../../../jakarta/persistence/criteria/FetchParent.html#fetch-java.lang.String-jakarta.persistence.criteria.JoinType-">fetch</a>, <a href="../../../jakarta/persistence/criteria/FetchParent.html#getFetches--">getFetches</a></code></li>
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<h4>on</h4>
<pre><a href="../../../jakarta/persistence/criteria/Join.html" title="interface in jakarta.persistence.criteria">Join</a>&lt;<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">Z</a>,<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">X</a>&gt;&nbsp;on(<a href="../../../jakarta/persistence/criteria/Expression.html" title="interface in jakarta.persistence.criteria">Expression</a>&lt;java.lang.Boolean&gt;&nbsp;restriction)</pre>
<div class="block">Modify the join to restrict the result according to the
specified ON condition and return the join object.
Replaces the previous ON condition, if any.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>restriction</code> - a simple or compound boolean expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the modified join object</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.1</dd>
</dl>
</li>
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<h4>on</h4>
<pre><a href="../../../jakarta/persistence/criteria/Join.html" title="interface in jakarta.persistence.criteria">Join</a>&lt;<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">Z</a>,<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">X</a>&gt;&nbsp;on(<a href="../../../jakarta/persistence/criteria/Predicate.html" title="interface in jakarta.persistence.criteria">Predicate</a>...&nbsp;restrictions)</pre>
<div class="block">Modify the join to restrict the result according to the
specified ON condition and return the join object.
Replaces the previous ON condition, if any.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>restrictions</code> - zero or more restriction predicates</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the modified join object</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.1</dd>
</dl>
</li>
</ul>
<a name="getOn--">
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<h4>getOn</h4>
<pre><a href="../../../jakarta/persistence/criteria/Predicate.html" title="interface in jakarta.persistence.criteria">Predicate</a>&nbsp;getOn()</pre>
<div class="block">Return the predicate that corresponds to the ON
restriction(s) on the join, or null if no ON condition
has been specified.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the ON restriction predicate</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.1</dd>
</dl>
</li>
</ul>
<a name="getAttribute--">
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<h4>getAttribute</h4>
<pre><a href="../../../jakarta/persistence/metamodel/Attribute.html" title="interface in jakarta.persistence.metamodel">Attribute</a>&lt;? super <a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">Z</a>,?&gt;&nbsp;getAttribute()</pre>
<div class="block">Return the metamodel attribute corresponding to the join.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>metamodel attribute corresponding to the join</dd>
</dl>
</li>
</ul>
<a name="getParent--">
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<h4>getParent</h4>
<pre><a href="../../../jakarta/persistence/criteria/From.html" title="interface in jakarta.persistence.criteria">From</a>&lt;?,<a href="../../../jakarta/persistence/criteria/Join.html" title="type parameter in Join">Z</a>&gt;&nbsp;getParent()</pre>
<div class="block">Return the parent of the join.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>join parent</dd>
</dl>
</li>
</ul>
<a name="getJoinType--">
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<h4>getJoinType</h4>
<pre><a href="../../../jakarta/persistence/criteria/JoinType.html" title="enum in jakarta.persistence.criteria">JoinType</a>&nbsp;getJoinType()</pre>
<div class="block">Return the join type.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>join type</dd>
</dl>
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