org.apache.calcite.sql.validate

Class MatchRecognizeNamespace

java.lang.Object

org.apache.calcite.sql.validate.AbstractNamespace

org.apache.calcite.sql.validate.MatchRecognizeNamespace

All Implemented Interfaces:

SqlValidatorNamespace

public class MatchRecognizeNamespace
extends AbstractNamespace

Namespace for a MATCH_RECOGNIZE clause.

Field Summary

Fields

Modifier and Type	Field and Description
private SqlMatchRecognize	matchRecognize

Fields inherited from class org.apache.calcite.sql.validate.AbstractNamespace

enclosingNode, rowType, type, validator

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MatchRecognizeNamespace(SqlValidatorImpl validator, SqlMatchRecognize matchRecognize, SqlNode enclosingNode) Creates a MatchRecognizeNamespace.

Method Summary

Modifier and Type	Method and Description
SqlMatchRecognize	getNode() Returns the parse tree node at the root of this namespace.
RelDataType	validateImpl(RelDataType targetRowType) Validates this scope and returns the type of the records it returns.

Methods inherited from class org.apache.calcite.sql.validate.AbstractNamespace

convertToStruct, fieldExists, getEnclosingNode, getMonotonicExprs, getMonotonicity, getRowType, getRowTypeSansSystemColumns, getTable, getType, getValidator, isWrapperFor, lookupChild, makeNullable, resolve, setType, supportsModality, toStruct, translate, unwrap, validate

Methods inherited from class java.lang.Object

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

Field Detail

matchRecognize

private final SqlMatchRecognize matchRecognize

Constructor Detail

MatchRecognizeNamespace

protected MatchRecognizeNamespace(SqlValidatorImpl validator,
                                  SqlMatchRecognize matchRecognize,
                                  SqlNode enclosingNode)

Creates a MatchRecognizeNamespace.

Method Detail

validateImpl

public RelDataType validateImpl(RelDataType targetRowType)

Description copied from class: AbstractNamespace

Validates this scope and returns the type of the records it returns. External users should call AbstractNamespace.validate(org.apache.calcite.rel.type.RelDataType), which uses the AbstractNamespace.status field to protect against cycles.

Specified by:

validateImpl in class AbstractNamespace

Parameters:

targetRowType - Desired row type, must not be null, may be the data type 'unknown'.

Returns:

record data type, never null

getNode

public SqlMatchRecognize getNode()

Description copied from interface: SqlValidatorNamespace

Returns the parse tree node at the root of this namespace.

Returns:

parse tree node; null for TableNamespace