org.apache.flink.table.planner.catalog

Class CatalogCalciteSchema

java.lang.Object

org.apache.flink.table.planner.catalog.FlinkSchema

org.apache.flink.table.planner.catalog.CatalogCalciteSchema

All Implemented Interfaces:

org.apache.calcite.schema.Schema

@Internal
public class CatalogCalciteSchema
extends FlinkSchema

A mapping between Flink's catalog and Calcite's schema. This enables to look up and access objects(tables, views, functions, types) in SQL queries without registering them in advance. Databases are registered as sub-schemas in the schema.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.schema.Schema

org.apache.calcite.schema.Schema.TableType

Constructor Summary

Constructors

Constructor and Description
CatalogCalciteSchema(String catalogName, CatalogManager catalog, boolean isStreamingMode)

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.linq4j.tree.Expression	getExpression(org.apache.calcite.schema.SchemaPlus parentSchema, String name)
org.apache.calcite.schema.Schema	getSubSchema(String schemaName) Look up a sub-schema (database) by the given sub-schema name.
Set<String>	getSubSchemaNames()
org.apache.calcite.schema.Table	getTable(String name)
Set<String>	getTableNames()
boolean	isMutable()

Methods inherited from class org.apache.flink.table.planner.catalog.FlinkSchema

getFunctionNames, getFunctions, getType, getTypeNames, snapshot

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CatalogCalciteSchema

public CatalogCalciteSchema(String catalogName,
                            CatalogManager catalog,
                            boolean isStreamingMode)

Method Detail

getSubSchema

public org.apache.calcite.schema.Schema getSubSchema(String schemaName)

Look up a sub-schema (database) by the given sub-schema name.

Parameters:

schemaName - name of sub-schema to look up

Returns:

the sub-schema with a given database name, or null

getSubSchemaNames

public Set<String> getSubSchemaNames()

getTable

public org.apache.calcite.schema.Table getTable(String name)

getTableNames

public Set<String> getTableNames()

getExpression

public org.apache.calcite.linq4j.tree.Expression getExpression(org.apache.calcite.schema.SchemaPlus parentSchema,
                                                               String name)

isMutable

public boolean isMutable()