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<div class="subTitle">org.apache.calcite.rel.metadata</div>
<h2 title="接口 MetadataHandler" class="title">接口 MetadataHandler&lt;M extends <a href="../../../../../org/apache/calcite/rel/metadata/Metadata.html" title="org.apache.calcite.rel.metadata中的接口">Metadata</a>&gt;</h2>
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<dt><span class="paramLabel">类型参数:</span></dt>
<dd><code>M</code> - Kind of metadata</dd>
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<dt>所有已知子接口:</dt>
<dd><a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.AllPredicates.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.AllPredicates.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Collation.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Collation.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.ColumnOrigin.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.ColumnOrigin.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.ColumnUniqueness.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.ColumnUniqueness.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.CumulativeCost.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.CumulativeCost.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.DistinctRowCount.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.DistinctRowCount.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Distribution.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Distribution.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.ExplainVisibility.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.ExplainVisibility.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.ExpressionLineage.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.ExpressionLineage.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.MaxRowCount.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.MaxRowCount.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Memory.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Memory.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.MinRowCount.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.MinRowCount.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.NodeTypes.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.NodeTypes.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.NonCumulativeCost.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.NonCumulativeCost.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Parallelism.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Parallelism.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.PercentageOriginalRows.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.PercentageOriginalRows.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.PopulationSize.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.PopulationSize.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Predicates.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Predicates.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.RowCount.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.RowCount.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Selectivity.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Selectivity.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Size.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Size.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.TableReferences.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.TableReferences.Handler</a>, <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.UniqueKeys.Handler.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.UniqueKeys.Handler</a></dd>
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<dd><a href="../../../../../org/apache/calcite/rel/metadata/RelMdAllPredicates.html" title="org.apache.calcite.rel.metadata中的类">RelMdAllPredicates</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdCollation.html" title="org.apache.calcite.rel.metadata中的类">RelMdCollation</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdColumnOrigins.html" title="org.apache.calcite.rel.metadata中的类">RelMdColumnOrigins</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdColumnUniqueness.html" title="org.apache.calcite.rel.metadata中的类">RelMdColumnUniqueness</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdDistinctRowCount.html" title="org.apache.calcite.rel.metadata中的类">RelMdDistinctRowCount</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdDistribution.html" title="org.apache.calcite.rel.metadata中的类">RelMdDistribution</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdExplainVisibility.html" title="org.apache.calcite.rel.metadata中的类">RelMdExplainVisibility</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdExpressionLineage.html" title="org.apache.calcite.rel.metadata中的类">RelMdExpressionLineage</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdMaxRowCount.html" title="org.apache.calcite.rel.metadata中的类">RelMdMaxRowCount</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdMemory.html" title="org.apache.calcite.rel.metadata中的类">RelMdMemory</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdMinRowCount.html" title="org.apache.calcite.rel.metadata中的类">RelMdMinRowCount</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdNodeTypes.html" title="org.apache.calcite.rel.metadata中的类">RelMdNodeTypes</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdParallelism.html" title="org.apache.calcite.rel.metadata中的类">RelMdParallelism</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdPercentageOriginalRows.html" title="org.apache.calcite.rel.metadata中的类">RelMdPercentageOriginalRows</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdPopulationSize.html" title="org.apache.calcite.rel.metadata中的类">RelMdPopulationSize</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html" title="org.apache.calcite.rel.metadata中的类">RelMdPredicates</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdRowCount.html" title="org.apache.calcite.rel.metadata中的类">RelMdRowCount</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdSelectivity.html" title="org.apache.calcite.rel.metadata中的类">RelMdSelectivity</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdSize.html" title="org.apache.calcite.rel.metadata中的类">RelMdSize</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdTableReferences.html" title="org.apache.calcite.rel.metadata中的类">RelMdTableReferences</a>, <a href="../../../../../org/apache/calcite/rel/metadata/RelMdUniqueKeys.html" title="org.apache.calcite.rel.metadata中的类">RelMdUniqueKeys</a></dd>
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<pre>public interface <span class="typeNameLabel">MetadataHandler&lt;M extends <a href="../../../../../org/apache/calcite/rel/metadata/Metadata.html" title="org.apache.calcite.rel.metadata中的接口">Metadata</a>&gt;</span></pre>
<div class="block">Marker interface for a handler of metadata.</div>
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<td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/metadata/MetadataDef.html" title="org.apache.calcite.rel.metadata中的类">MetadataDef</a>&lt;<a href="../../../../../org/apache/calcite/rel/metadata/MetadataHandler.html" title="MetadataHandler中的类型参数">M</a>&gt;</code></td>
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<pre><a href="../../../../../org/apache/calcite/rel/metadata/MetadataDef.html" title="org.apache.calcite.rel.metadata中的类">MetadataDef</a>&lt;<a href="../../../../../org/apache/calcite/rel/metadata/MetadataHandler.html" title="MetadataHandler中的类型参数">M</a>&gt;&nbsp;getDef()</pre>
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