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| <h2 title="接口 Context" class="title">接口 Context</h2> |
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| <dt>所有超级接口:</dt> |
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| <dt>所有已知实现类:</dt> |
| <dd><a href="../../../../org/apache/calcite/sql/fun/SqlAbstractGroupFunction.html" title="org.apache.calcite.sql.fun中的类">SqlAbstractGroupFunction</a>, <a href="../../../../org/apache/calcite/sql/SqlAggFunction.html" title="org.apache.calcite.sql中的类">SqlAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlAnyValueAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlAnyValueAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlAvgAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlAvgAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlBitOpAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlBitOpAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlCountAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlCountAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlCovarAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlCovarAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlFirstLastValueAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlFirstLastValueAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlHistogramAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlHistogramAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlJsonArrayAggAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlJsonArrayAggAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlJsonObjectAggAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlJsonObjectAggAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlLeadLagAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlLeadLagAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlMinMaxAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlMinMaxAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlNthValueAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlNthValueAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlNtileAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlNtileAggFunction</a>, <a href="../../../../org/apache/calcite/sql/SqlRankFunction.html" title="org.apache.calcite.sql中的类">SqlRankFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlRegrCountAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlRegrCountAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlSingleValueAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlSingleValueAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlSumAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlSumAggFunction</a>, <a href="../../../../org/apache/calcite/sql/fun/SqlSumEmptyIsZeroAggFunction.html" title="org.apache.calcite.sql.fun中的类">SqlSumEmptyIsZeroAggFunction</a>, <a href="../../../../org/apache/calcite/sql/validate/SqlUserDefinedAggFunction.html" title="org.apache.calcite.sql.validate中的类">SqlUserDefinedAggFunction</a></dd> |
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| <pre>public interface <span class="typeNameLabel">Context</span> |
| extends <a href="../../../../org/apache/calcite/schema/Wrapper.html" title="org.apache.calcite.schema中的接口">Wrapper</a></pre> |
| <div class="block">Provides library users a way to store data within the planner session and |
| access it within rules. Frameworks can implement their own implementation |
| of Context and pass that as part of the FrameworkConfig. |
| |
| <p>Simply implement the <a href="../../../../org/apache/calcite/schema/Wrapper.html#unwrap-java.lang.Class-"><code>Wrapper.unwrap(java.lang.Class<C>)</code></a> method to return any sub-objects |
| that you wish to provide.</div> |
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| <code><a href="../../../../org/apache/calcite/schema/Wrapper.html#unwrap-java.lang.Class-">unwrap</a></code></li> |
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