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<h2 title="接口 RelImplementor" class="title">接口 RelImplementor</h2>
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<dd><a href="../../../../org/apache/calcite/adapter/enumerable/EnumerableRelImplementor.html" title="org.apache.calcite.adapter.enumerable中的类">EnumerableRelImplementor</a>, <a href="../../../../org/apache/calcite/adapter/enumerable/JavaRelImplementor.html" title="org.apache.calcite.adapter.enumerable中的类">JavaRelImplementor</a>, <a href="../../../../org/apache/calcite/adapter/spark/SparkRel.Implementor.html" title="org.apache.calcite.adapter.spark中的类">SparkRel.Implementor</a></dd>
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<pre>public interface <span class="typeNameLabel">RelImplementor</span></pre>
<div class="block">This is a marker interface for a callback used to convert a tree of
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口"><code>relational expressions</code></a> into a plan. Calling
conventions typically have their own protocol for walking over a
tree, and correspondingly have their own implementors</div>
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<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/validate/SqlConformance.html" title="org.apache.calcite.sql.validate中的接口">SqlConformance</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelImplementor.html#getConformance--">getConformance</a></span>()</code>
<div class="block">Returns the desired SQL conformance.</div>
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<h4>getConformance</h4>
<pre><a href="../../../../org/apache/calcite/sql/validate/SqlConformance.html" title="org.apache.calcite.sql.validate中的接口">SqlConformance</a>&nbsp;getConformance()</pre>
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