org.apache.calcite.schema

Interface Wrapper

All Known Subinterfaces:

Context, Prepare.CatalogReader, Prepare.PreparingTable, RelOptTable, SqlValidatorCatalogReader, SqlValidatorTable

All Known Implementing Classes:

AbstractElasticsearchTable, AbstractQueryableTable, AbstractTable, ArrayTable, CalciteCatalogReader, CalciteMetaImpl.MetadataTable, Contexts.ChainContext, Contexts.EmptyContext, Contexts.WrapContext, DelegatingSqlValidatorCatalogReader, DelegatingSqlValidatorTable, JdbcTable, ListTable, LoptSemiJoinOptimizer.LcsTable, MaterializedViewTable, ModifiableViewTable, Prepare.AbstractPreparingTable, ReflectiveSchema.FieldTable, ReflectiveSchema.ReflectiveTable, RelOptAbstractTable, RelOptTableImpl, SqlAbstractGroupFunction, SqlAggFunction, SqlAvgAggFunction, SqlCountAggFunction, SqlCovarAggFunction, SqlFirstLastValueAggFunction, SqlGroupIdFunction, SqlGroupingFunction, SqlGroupingIdFunction, SqlHistogramAggFunction, SqlLeadLagAggFunction, SqlMinMaxAggFunction, SqlNtileAggFunction, SqlRankFunction, SqlSingleValueAggFunction, SqlSumAggFunction, SqlSumEmptyIsZeroAggFunction, SqlUserDefinedAggFunction, StarTable, ViewTable

public interface Wrapper

Mix-in interface that allows you to find sub-objects.

Method Summary

Modifier and Type	Method and Description
<C> C	unwrap(Class<C> aClass) Finds an instance of an interface implemented by this object, or returns null if this object does not support that interface.

Method Detail

unwrap

<C> C unwrap(Class<C> aClass)

Finds an instance of an interface implemented by this object, or returns null if this object does not support that interface.