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| <h2 title="Class AbstractConverter.ExpandConversionRule" class="title">Class AbstractConverter.ExpandConversionRule</h2> |
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| <li>java.lang.Object</li> |
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| <li><a href="../RelOptRule.html" title="class in org.apache.calcite.plan">org.apache.calcite.plan.RelOptRule</a></li> |
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| <li>org.apache.calcite.plan.volcano.AbstractConverter.ExpandConversionRule</li> |
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| <hr> |
| <pre>public static class <span class="typeNameLabel">AbstractConverter.ExpandConversionRule</span> |
| extends <a href="../RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></pre> |
| <div class="block">Rule which converts an <a href="AbstractConverter.html" title="class in org.apache.calcite.plan.volcano"><code>AbstractConverter</code></a> into a chain of |
| converters from the source relation to the target traits. |
| |
| <p>The chain produced is minimal: we have previously built the transitive |
| closure of the graph of conversions, so we choose the shortest chain.</p> |
| |
| <p>Unlike the <a href="AbstractConverter.html" title="class in org.apache.calcite.plan.volcano"><code>AbstractConverter</code></a> they are replacing, these |
| converters are guaranteed to be able to convert any relation of their |
| calling convention. Furthermore, because they introduce subsets of other |
| calling conventions along the way, these subsets may spawn more efficient |
| conversions which are not generally applicable.</p> |
| |
| <p>AbstractConverters can be messy, so they restrain themselves: they |
| don't fire if the target subset already has an implementation (with less |
| than infinite cost).</p></div> |
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| <td class="colFirst"><code>static <a href="AbstractConverter.ExpandConversionRule.html" title="class in org.apache.calcite.plan.volcano">AbstractConverter.ExpandConversionRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#INSTANCE">INSTANCE</a></span></code></th> |
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| <code><a href="../RelOptRule.html#description">description</a>, <a href="../RelOptRule.html#operands">operands</a>, <a href="../RelOptRule.html#relBuilderFactory">relBuilderFactory</a></code></li> |
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| <th class="colFirst" scope="col">Constructor</th> |
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| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.tools.RelBuilderFactory)">ExpandConversionRule</a></span>​(<a href="../../tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a> relBuilderFactory)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates an ExpandConversionRule.</div> |
| </td> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a></span>​(<a href="../RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a> call)</code></th> |
| <td class="colLast"> |
| <div class="block">Receives notification about a rule match.</div> |
| </td> |
| </tr> |
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| <h3>Methods inherited from class org.apache.calcite.plan.<a href="../RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h3> |
| <code><a href="../RelOptRule.html#any()">any</a>, <a href="../RelOptRule.html#convert(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelTrait)">convert</a>, <a href="../RelOptRule.html#convert(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelTraitSet)">convert</a>, <a href="../RelOptRule.html#convertList(java.util.List,org.apache.calcite.plan.RelTrait)">convertList</a>, <a href="../RelOptRule.html#convertOperand(java.lang.Class,com.google.common.base.Predicate,org.apache.calcite.plan.RelTrait)">convertOperand</a>, <a href="../RelOptRule.html#convertOperand(java.lang.Class,java.util.function.Predicate,org.apache.calcite.plan.RelTrait)">convertOperand</a>, <a href="../RelOptRule.html#equals(java.lang.Object)">equals</a>, <a href="../RelOptRule.html#equals(org.apache.calcite.plan.RelOptRule)">equals</a>, <a href="../RelOptRule.html#getOperand()">getOperand</a>, <a href="../RelOptRule.html#getOperands()">getOperands</a>, <a href="../RelOptRule.html#getOutConvention()">getOutConvention</a>, <a href="../RelOptRule.html#getOutTrait()">getOutTrait</a>, <a href="../RelOptRule.html#hashCode()">hashCode</a>, <a href="../RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)">matches</a>, <a href="../RelOptRule.html#none()">none</a>, <a href="../RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operand</a>, <a href="../RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,com.google.common.base.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,com.google.common.base.Predicate,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operand</a>, <a href="../RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../RelOptRule.html#operandJ(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">operandJ</a>, <a href="../RelOptRule.html#operandJ(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operandJ</a>, <a href="../RelOptRule.html#some(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">some</a>, <a href="../RelOptRule.html#toString()">toString</a>, <a href="../RelOptRule.html#unordered(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">unordered</a></code></li> |
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| <code>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</code></li> |
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| <h4>INSTANCE</h4> |
| <pre>public static final <a href="AbstractConverter.ExpandConversionRule.html" title="class in org.apache.calcite.plan.volcano">AbstractConverter.ExpandConversionRule</a> INSTANCE</pre> |
| </li> |
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| <h4>ExpandConversionRule</h4> |
| <pre>public ExpandConversionRule​(<a href="../../tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a> relBuilderFactory)</pre> |
| <div class="block">Creates an ExpandConversionRule.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>relBuilderFactory</code> - Builder for relational expressions</dd> |
| </dl> |
| </li> |
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| <h4>onMatch</h4> |
| <pre class="methodSignature">public void onMatch​(<a href="../RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a> call)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)">RelOptRule</a></code></span></div> |
| <div class="block">Receives notification about a rule match. At the time that this method is |
| called, <a href="../RelOptRuleCall.html#rels"><code>call.rels</code></a> holds the set of relational |
| expressions which match the operands to the rule; <code> |
| call.rels[0]</code> is the root expression. |
| |
| <p>Typically a rule would check that the nodes are valid matches, creates |
| a new expression, then calls back <a href="../RelOptRuleCall.html#transformTo(org.apache.calcite.rel.RelNode,java.util.Map)"><code>RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map<org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode>)</code></a> to |
| register the expression.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a></code> in class <code><a href="../RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>call</code> - Rule call</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.matches(RelOptRuleCall)</code></a></dd> |
| </dl> |
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