Package org.apache.flink.table.planner.plan.schema

Class ExpandingPreparingTable

java.lang.Object

org.apache.calcite.prepare.Prepare.AbstractPreparingTable

org.apache.flink.table.planner.plan.schema.FlinkPreparingTableBase

org.apache.flink.table.planner.plan.schema.ExpandingPreparingTable

All Implemented Interfaces:

org.apache.calcite.plan.RelOptTable, org.apache.calcite.prepare.Prepare.PreparingTable, org.apache.calcite.schema.Wrapper, org.apache.calcite.sql.validate.SqlValidatorTable

Direct Known Subclasses:

QueryOperationCatalogViewTable, SqlCatalogViewTable

public abstract class ExpandingPreparingTable
extends FlinkPreparingTableBase

A common subclass for all tables that are expanded to sub-query (views). It handles recursive expanding of sub-views automatically.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.plan.RelOptTable

org.apache.calcite.plan.RelOptTable.ToRelContext, org.apache.calcite.plan.RelOptTable.ViewExpander

Field Summary

Fields inherited from class org.apache.flink.table.planner.plan.schema.FlinkPreparingTableBase

names, relOptSchema, rowType, statistic

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ExpandingPreparingTable(org.apache.calcite.plan.RelOptSchema relOptSchema, org.apache.calcite.rel.type.RelDataType rowType, Iterable<String> names, FlinkStatistic statistic)

Method Summary

Modifier and Type	Method	Description
protected abstract org.apache.calcite.rel.RelNode	convertToRel(org.apache.calcite.plan.RelOptTable.ToRelContext context)	Converts the table to a RelNode.
final org.apache.calcite.rel.RelNode	toRel(org.apache.calcite.plan.RelOptTable.ToRelContext context)

Methods inherited from class org.apache.flink.table.planner.plan.schema.FlinkPreparingTableBase

columnHasDefaultValue, explainSourceAsString, extend, getAllowedAccess, getCollationList, getDistribution, getExpression, getKeys, getMonotonicity, getNames, getQualifiedName, getReferentialConstraints, getRelOptSchema, getRowCount, getRowType, getStatistic, isKey, isTemporal, supportsModality, uniqueKeysSet, unwrap

Methods inherited from class org.apache.calcite.prepare.Prepare.AbstractPreparingTable

extend, getColumnStrategies

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.sql.validate.SqlValidatorTable

table

Methods inherited from interface org.apache.calcite.schema.Wrapper

maybeUnwrap, unwrapOrThrow

Constructor Details

ExpandingPreparingTable

protected ExpandingPreparingTable(@Nullable
 org.apache.calcite.plan.RelOptSchema relOptSchema,
 org.apache.calcite.rel.type.RelDataType rowType,
 Iterable<String> names,
 FlinkStatistic statistic)

Method Details

convertToRel

protected abstract org.apache.calcite.rel.RelNode convertToRel(org.apache.calcite.plan.RelOptTable.ToRelContext context)

Converts the table to a RelNode. Does not need to expand any nested scans of an ExpandingPreparingTable. Those will be expanded recursively.

Returns:

a relational tree

toRel

public final org.apache.calcite.rel.RelNode toRel(org.apache.calcite.plan.RelOptTable.ToRelContext context)

Specified by:

toRel in interface org.apache.calcite.plan.RelOptTable

Overrides:

toRel in class FlinkPreparingTableBase