| <!DOCTYPE HTML> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc --> |
| <title>PruneEmptyRules (Apache Calcite API)</title> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../jquery/jquery-ui.css" title="Style"> |
| <script type="text/javascript" src="../../../../../script.js"></script> |
| <script type="text/javascript" src="../../../../../jquery/jszip/dist/jszip.min.js"></script> |
| <script type="text/javascript" src="../../../../../jquery/jszip-utils/dist/jszip-utils.min.js"></script> |
| <!--[if IE]> |
| <script type="text/javascript" src="../../../../../jquery/jszip-utils/dist/jszip-utils-ie.min.js"></script> |
| <![endif]--> |
| <script type="text/javascript" src="../../../../../jquery/jquery-3.3.1.js"></script> |
| <script type="text/javascript" src="../../../../../jquery/jquery-migrate-3.0.1.js"></script> |
| <script type="text/javascript" src="../../../../../jquery/jquery-ui.js"></script> |
| </head> |
| <body> |
| <script type="text/javascript"><!-- |
| try { |
| if (location.href.indexOf('is-external=true') == -1) { |
| parent.document.title="PruneEmptyRules (Apache Calcite API)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var data = {"i0":9}; |
| var tabs = {65535:["t0","All Methods"],1:["t1","Static Methods"],8:["t4","Concrete Methods"]}; |
| var altColor = "altColor"; |
| var rowColor = "rowColor"; |
| var tableTab = "tableTab"; |
| var activeTableTab = "activeTableTab"; |
| var pathtoroot = "../../../../../"; |
| var useModuleDirectories = true; |
| loadScripts(document, 'script');</script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <header role="banner"> |
| <nav role="navigation"> |
| <div class="fixedNav"> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="topNav"><a id="navbar.top"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> |
| <a id="navbar.top.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../index.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/PruneEmptyRules.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList" id="allclasses_navbar_top"> |
| <li><a href="../../../../../allclasses.html">All Classes</a></li> |
| </ul> |
| <ul class="navListSearch"> |
| <li><label for="search">SEARCH:</label> |
| <input type="text" id="search" value="search" disabled="disabled"> |
| <input type="reset" id="reset" value="reset" disabled="disabled"> |
| </li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_top"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a id="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| </div> |
| <div class="navPadding"> </div> |
| <script type="text/javascript"><!-- |
| $('.navPadding').css('padding-top', $('.fixedNav').css("height")); |
| //--> |
| </script> |
| </nav> |
| </header> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <main role="main"> |
| <div class="header"> |
| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.rel.rules</a></div> |
| <h2 title="Class PruneEmptyRules" class="title">Class PruneEmptyRules</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.rel.rules.PruneEmptyRules</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <hr> |
| <pre>public abstract class <span class="typeNameLabel">PruneEmptyRules</span> |
| extends java.lang.Object</pre> |
| <div class="block">Collection of rules which remove sections of a query plan known never to |
| produce any rows. |
| |
| <p>Conventionally, the way to represent an empty relational expression is |
| with a <a href="../core/Values.html" title="class in org.apache.calcite.rel.core"><code>Values</code></a> that has no tuples.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../logical/LogicalValues.html#createEmpty(org.apache.calcite.plan.RelOptCluster,org.apache.calcite.rel.type.RelDataType)"><code>LogicalValues.createEmpty(org.apache.calcite.plan.RelOptCluster, org.apache.calcite.rel.type.RelDataType)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="nested.class.summary"> |
| <!-- --> |
| </a> |
| <h3>Nested Class Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="PruneEmptyRules.RemoveEmptySingleRule.html" title="class in org.apache.calcite.rel.rules">PruneEmptyRules.RemoveEmptySingleRule</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Planner rule that converts a single-rel (e.g.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="field.summary"> |
| <!-- --> |
| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Field</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#AGGREGATE_INSTANCE">AGGREGATE_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that converts an <a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core"><code>Aggregate</code></a> |
| to empty if its child is empty.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#FILTER_INSTANCE">FILTER_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that converts a <a href="../logical/LogicalFilter.html" title="class in org.apache.calcite.rel.logical"><code>LogicalFilter</code></a> |
| to empty if its child is empty.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#INTERSECT_INSTANCE">INTERSECT_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that converts a |
| <a href="../logical/LogicalIntersect.html" title="class in org.apache.calcite.rel.logical"><code>LogicalIntersect</code></a> to |
| empty if any of its children are empty.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#JOIN_LEFT_INSTANCE">JOIN_LEFT_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that converts a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a> |
| to empty if its left child is empty.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#JOIN_RIGHT_INSTANCE">JOIN_RIGHT_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that converts a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a> |
| to empty if its right child is empty.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#MINUS_INSTANCE">MINUS_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that removes empty children of a |
| <a href="../logical/LogicalMinus.html" title="class in org.apache.calcite.rel.logical"><code>LogicalMinus</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#PROJECT_INSTANCE">PROJECT_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that converts a <a href="../logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a> |
| to empty if its child is empty.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SORT_FETCH_ZERO_INSTANCE">SORT_FETCH_ZERO_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that converts a <a href="../core/Sort.html" title="class in org.apache.calcite.rel.core"><code>Sort</code></a> |
| to empty if it has <code>LIMIT 0</code>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SORT_INSTANCE">SORT_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that converts a <a href="../core/Sort.html" title="class in org.apache.calcite.rel.core"><code>Sort</code></a> |
| to empty if its child is empty.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#UNION_INSTANCE">UNION_INSTANCE</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule that removes empty children of a |
| <a href="../logical/LogicalUnion.html" title="class in org.apache.calcite.rel.logical"><code>LogicalUnion</code></a>.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">PruneEmptyRules</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>private static boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isEmpty(org.apache.calcite.rel.RelNode)">isEmpty</a></span>​(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> node)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="field.detail"> |
| <!-- --> |
| </a> |
| <h3>Field Detail</h3> |
| <a id="UNION_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>UNION_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> UNION_INSTANCE</pre> |
| <div class="block">Rule that removes empty children of a |
| <a href="../logical/LogicalUnion.html" title="class in org.apache.calcite.rel.logical"><code>LogicalUnion</code></a>. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Union(Rel, Empty, Rel2) becomes Union(Rel, Rel2) |
| <li>Union(Rel, Empty, Empty) becomes Rel |
| <li>Union(Empty, Empty) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| <a id="MINUS_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>MINUS_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> MINUS_INSTANCE</pre> |
| <div class="block">Rule that removes empty children of a |
| <a href="../logical/LogicalMinus.html" title="class in org.apache.calcite.rel.logical"><code>LogicalMinus</code></a>. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Minus(Rel, Empty, Rel2) becomes Minus(Rel, Rel2) |
| <li>Minus(Empty, Rel) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| <a id="INTERSECT_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>INTERSECT_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> INTERSECT_INSTANCE</pre> |
| <div class="block">Rule that converts a |
| <a href="../logical/LogicalIntersect.html" title="class in org.apache.calcite.rel.logical"><code>LogicalIntersect</code></a> to |
| empty if any of its children are empty. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Intersect(Rel, Empty, Rel2) becomes Empty |
| <li>Intersect(Empty, Rel) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| <a id="PROJECT_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>PROJECT_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> PROJECT_INSTANCE</pre> |
| <div class="block">Rule that converts a <a href="../logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a> |
| to empty if its child is empty. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Project(Empty) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| <a id="FILTER_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>FILTER_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> FILTER_INSTANCE</pre> |
| <div class="block">Rule that converts a <a href="../logical/LogicalFilter.html" title="class in org.apache.calcite.rel.logical"><code>LogicalFilter</code></a> |
| to empty if its child is empty. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Filter(Empty) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| <a id="SORT_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>SORT_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> SORT_INSTANCE</pre> |
| <div class="block">Rule that converts a <a href="../core/Sort.html" title="class in org.apache.calcite.rel.core"><code>Sort</code></a> |
| to empty if its child is empty. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Sort(Empty) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| <a id="SORT_FETCH_ZERO_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>SORT_FETCH_ZERO_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> SORT_FETCH_ZERO_INSTANCE</pre> |
| <div class="block">Rule that converts a <a href="../core/Sort.html" title="class in org.apache.calcite.rel.core"><code>Sort</code></a> |
| to empty if it has <code>LIMIT 0</code>. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Sort(Empty) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| <a id="AGGREGATE_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>AGGREGATE_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> AGGREGATE_INSTANCE</pre> |
| <div class="block">Rule that converts an <a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core"><code>Aggregate</code></a> |
| to empty if its child is empty. |
| |
| <p>Examples: |
| |
| <ul> |
| <li><code>Aggregate(key: [1, 3], Empty)</code> → <code>Empty</code> |
| |
| <li><code>Aggregate(key: [], Empty)</code> is unchanged, because an aggregate |
| without a GROUP BY key always returns 1 row, even over empty input |
| </ul></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="AggregateValuesRule.html" title="class in org.apache.calcite.rel.rules"><code>AggregateValuesRule</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="JOIN_LEFT_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>JOIN_LEFT_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> JOIN_LEFT_INSTANCE</pre> |
| <div class="block">Rule that converts a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a> |
| to empty if its left child is empty. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Join(Empty, Scan(Dept), INNER) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| <a id="JOIN_RIGHT_INSTANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>JOIN_RIGHT_INSTANCE</h4> |
| <pre>public static final <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> JOIN_RIGHT_INSTANCE</pre> |
| <div class="block">Rule that converts a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a> |
| to empty if its right child is empty. |
| |
| <p>Examples: |
| |
| <ul> |
| <li>Join(Scan(Emp), Empty, INNER) becomes Empty |
| </ul></div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a id="<init>()"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>PruneEmptyRules</h4> |
| <pre>public PruneEmptyRules()</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ============ METHOD DETAIL ========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a id="isEmpty(org.apache.calcite.rel.RelNode)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>isEmpty</h4> |
| <pre class="methodSignature">private static boolean isEmpty​(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> node)</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </main> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <footer role="contentinfo"> |
| <nav role="navigation"> |
| <!-- ======= START OF BOTTOM NAVBAR ====== --> |
| <div class="bottomNav"><a id="navbar.bottom"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> |
| <a id="navbar.bottom.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../index.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/PruneEmptyRules.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList" id="allclasses_navbar_bottom"> |
| <li><a href="../../../../../allclasses.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_bottom"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a id="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| </nav> |
| <p class="legalCopy"><small>Copyright © 2012–2019 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p> |
| </footer> |
| </body> |
| </html> |
