Package org.apache.calcite.schema

Interface Wrapper

All Known Subinterfaces:

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

All Known Implementing Classes:

AbstractQueryableTable, AbstractTable, ArrayTable, CalciteCatalogReader, CalciteMetaImpl.MetadataTable, CassandraTable, Contexts.ChainContext, Contexts.EmptyContext, Contexts.WrapContext, CsvFilterableTable, CsvScannableTable, CsvStreamScannableTable, CsvTable, CsvTranslatableTable, DelegatingSqlValidatorCatalogReader, DelegatingSqlValidatorTable, DruidTable, ElasticsearchTable, FileTable, GeodeSimpleScannableTable, GeodeTable, JdbcTable, JsonTable, ListTable, LoptSemiJoinOptimizer.LcsTable, MaterializedViewTable, MazeTable, ModifiableViewTable, MongoTable, PigTable, Prepare.AbstractPreparingTable, ReflectiveSchema.FieldTable, ReflectiveSchema.ReflectiveTable, RelOptAbstractTable, RelOptTableImpl, SplunkTable, SqlAbstractGroupFunction, SqlAggFunction, SqlAnyValueAggFunction, SqlAvgAggFunction, SqlCountAggFunction, SqlCovarAggFunction, SqlCreateMaterializedView.MaterializedViewTable, SqlCreateTable.AbstractModifiableTable, SqlCreateTable.MutableArrayTable, SqlFirstLastValueAggFunction, SqlGroupIdFunction, SqlGroupingFunction, SqlGroupingIdFunction, SqlHistogramAggFunction, SqlJsonArrayAggAggFunction, SqlJsonObjectAggAggFunction, SqlLeadLagAggFunction, SqlMinMaxAggFunction, SqlNthValueAggFunction, SqlNtileAggFunction, SqlRankFunction, SqlRegrCountAggFunction, SqlSingleValueAggFunction, SqlSumAggFunction, SqlSumEmptyIsZeroAggFunction, SqlUserDefinedAggFunction, StarTable, TpcdsSchema.TpcdsQueryableTable, TpchSchema.TpchQueryableTable, ViewTable

public interface Wrapper

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

Method Summary

Modifier and Type	Method	Description
<C> C	unwrap(java.lang.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(java.lang.Class<C> aClass)

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