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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.util.graph</a></div>
<h1 title="Interface DirectedGraph" class="title">Interface DirectedGraph&lt;V,<wbr>E&gt;</h1>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>Type Parameters:</dt>
<dd><code>V</code> - Vertex type</dd>
<dd><code>E</code> - Edge type</dd>
</dl>
<dl class="notes">
<dt>All Known Implementing Classes:</dt>
<dd><code><a href="AttributedDirectedGraph.html" title="class in org.apache.calcite.util.graph">AttributedDirectedGraph</a></code>, <code><a href="DefaultDirectedGraph.html" title="class in org.apache.calcite.util.graph">DefaultDirectedGraph</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">DirectedGraph&lt;V,<wbr>E&gt;</span></div>
<div class="block">Directed graph.</div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ======== NESTED CLASS SUMMARY ======== -->
<li>
<section class="nested-class-summary" id="nested-class-summary">
<h2>Nested Class Summary</h2>
<div class="caption"><span>Nested Classes</span></div>
<div class="summary-table three-column-summary">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Interface</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code>static interface&nbsp;</code></div>
<div class="col-second even-row-color"><code><a href="DirectedGraph.EdgeFactory.html" class="type-name-link" title="interface in org.apache.calcite.util.graph">DirectedGraph.EdgeFactory</a>&lt;<a href="DirectedGraph.EdgeFactory.html" title="type parameter in DirectedGraph.EdgeFactory">V</a>,<wbr><a href="DirectedGraph.EdgeFactory.html" title="type parameter in DirectedGraph.EdgeFactory">E</a>&gt;</code></div>
<div class="col-last even-row-color">
<div class="block">Factory for edges.</div>
</div>
</div>
</section>
</li>
<!-- ========== METHOD SUMMARY =========== -->
<li>
<section class="method-summary" id="method-summary">
<h2>Method Summary</h2>
<div id="method-summary-table">
<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab3" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab3', 3)" class="table-tab">Abstract Methods</button></div>
<div id="method-summary-table.tabpanel" role="tabpanel">
<div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>@Nullable <a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#addEdge(V,V)" class="member-name-link">addEdge</a><wbr>(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;vertex,
<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;targetVertex)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Adds an edge to this graph.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>boolean</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#addVertex(V)" class="member-name-link">addVertex</a><wbr>(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;vertex)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Adds a vertex to this graph.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html" title="class or interface in java.util" class="external-link">Set</a>&lt;<a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a>&gt;</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#edgeSet()" class="member-name-link">edgeSet</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>@Nullable <a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getEdge(V,V)" class="member-name-link">getEdge</a><wbr>(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;source,
<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;target)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a>&gt;</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getInwardEdges(V)" class="member-name-link">getInwardEdges</a><wbr>(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;vertex)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a>&gt;</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getOutwardEdges(V)" class="member-name-link">getOutwardEdges</a><wbr>(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;source)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#removeAllVertices(java.util.Collection)" class="member-name-link">removeAllVertices</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Collection.html" title="class or interface in java.util" class="external-link">Collection</a>&lt;<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&gt;&nbsp;collection)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Removes from this graph all vertices that are in <code>collection</code>,
and the edges into and out of those vertices.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>boolean</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#removeEdge(V,V)" class="member-name-link">removeEdge</a><wbr>(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;vertex,
<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;targetVertex)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html" title="class or interface in java.util" class="external-link">Set</a>&lt;? extends <a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&gt;</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#vertexSet()" class="member-name-link">vertexSet</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">&nbsp;</div>
</div>
</div>
</div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="addVertex(V)">
<h3 id="addVertex(java.lang.Object)">addVertex</h3>
<div class="member-signature"><span class="return-type">boolean</span>&nbsp;<span class="element-name">addVertex</span><wbr><span class="parameters">(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;vertex)</span></div>
<div class="block">Adds a vertex to this graph.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>vertex</code> - Vertex</dd>
<dt>Returns:</dt>
<dd>Whether vertex was added</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="addEdge(V,V)">
<h3 id="addEdge(java.lang.Object,java.lang.Object)">addEdge</h3>
<div class="member-signature"><span class="return-type">@Nullable <a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a></span>&nbsp;<span class="element-name">addEdge</span><wbr><span class="parameters">(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;vertex,
<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;targetVertex)</span></div>
<div class="block">Adds an edge to this graph.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>vertex</code> - Source vertex</dd>
<dd><code>targetVertex</code> - Target vertex</dd>
<dt>Returns:</dt>
<dd>New edge, if added, otherwise null</dd>
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link">IllegalArgumentException</a></code> - if either vertex is not already in graph</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getEdge(V,V)">
<h3 id="getEdge(java.lang.Object,java.lang.Object)">getEdge</h3>
<div class="member-signature"><span class="return-type">@Nullable <a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a></span>&nbsp;<span class="element-name">getEdge</span><wbr><span class="parameters">(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;source,
<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;target)</span></div>
</section>
</li>
<li>
<section class="detail" id="removeEdge(V,V)">
<h3 id="removeEdge(java.lang.Object,java.lang.Object)">removeEdge</h3>
<div class="member-signature"><span class="return-type">boolean</span>&nbsp;<span class="element-name">removeEdge</span><wbr><span class="parameters">(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;vertex,
<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;targetVertex)</span></div>
</section>
</li>
<li>
<section class="detail" id="vertexSet()">
<h3>vertexSet</h3>
<div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html" title="class or interface in java.util" class="external-link">Set</a>&lt;? extends <a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&gt;</span>&nbsp;<span class="element-name">vertexSet</span>()</div>
</section>
</li>
<li>
<section class="detail" id="removeAllVertices(java.util.Collection)">
<h3>removeAllVertices</h3>
<div class="member-signature"><span class="return-type">void</span>&nbsp;<span class="element-name">removeAllVertices</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Collection.html" title="class or interface in java.util" class="external-link">Collection</a>&lt;<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&gt;&nbsp;collection)</span></div>
<div class="block">Removes from this graph all vertices that are in <code>collection</code>,
and the edges into and out of those vertices.</div>
</section>
</li>
<li>
<section class="detail" id="getOutwardEdges(V)">
<h3 id="getOutwardEdges(java.lang.Object)">getOutwardEdges</h3>
<div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a>&gt;</span>&nbsp;<span class="element-name">getOutwardEdges</span><wbr><span class="parameters">(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;source)</span></div>
</section>
</li>
<li>
<section class="detail" id="getInwardEdges(V)">
<h3 id="getInwardEdges(java.lang.Object)">getInwardEdges</h3>
<div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a>&gt;</span>&nbsp;<span class="element-name">getInwardEdges</span><wbr><span class="parameters">(<a href="DirectedGraph.html" title="type parameter in DirectedGraph">V</a>&nbsp;vertex)</span></div>
</section>
</li>
<li>
<section class="detail" id="edgeSet()">
<h3>edgeSet</h3>
<div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html" title="class or interface in java.util" class="external-link">Set</a>&lt;<a href="DirectedGraph.html" title="type parameter in DirectedGraph">E</a>&gt;</span>&nbsp;<span class="element-name">edgeSet</span>()</div>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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