org.apache.calcite.sql.validate

Class AliasNamespace

java.lang.Object

org.apache.calcite.sql.validate.AliasNamespace

All Implemented Interfaces:

org.apache.calcite.sql.validate.SqlValidatorNamespace

public class AliasNamespace
extends Object

Namespace for an AS t(c1, c2, ...) clause.

A namespace is necessary only if there is a column list, in order to re-map column names; a relation AS t clause just uses the same namespace as relation.

Compared to Calcite we forward the original StructKind and nullability.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.calcite.sql.SqlCall	call
protected org.apache.calcite.sql.SqlNode	enclosingNode
protected org.apache.calcite.rel.type.RelDataType	rowType
protected org.apache.calcite.rel.type.RelDataType	type
protected SqlValidatorImpl	validator

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AliasNamespace(SqlValidatorImpl validator, org.apache.calcite.sql.SqlCall call, org.apache.calcite.sql.SqlNode enclosingNode) Creates an AliasNamespace.

Method Summary

Modifier and Type	Method and Description
protected org.apache.calcite.rel.type.RelDataType	convertToStruct(org.apache.calcite.rel.type.RelDataType arg0)
boolean	fieldExists(String arg0)
org.apache.calcite.sql.SqlNode	getEnclosingNode()
List<org.apache.calcite.util.Pair<org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.validate.SqlMonotonicity>>	getMonotonicExprs()
org.apache.calcite.sql.validate.SqlMonotonicity	getMonotonicity(String arg0)
org.apache.calcite.sql.SqlNode	getNode()
org.apache.calcite.rel.type.RelDataType	getRowType()
org.apache.calcite.rel.type.RelDataType	getRowTypeSansSystemColumns()
org.apache.calcite.sql.validate.SqlValidatorTable	getTable()
org.apache.calcite.rel.type.RelDataType	getType()
org.apache.calcite.sql.validate.SqlValidator	getValidator()
boolean	isWrapperFor(Class<?> arg0)
org.apache.calcite.sql.validate.SqlValidatorNamespace	lookupChild(String arg0)
void	makeNullable()
org.apache.calcite.sql.validate.SqlValidatorNamespace	resolve()
void	setType(org.apache.calcite.rel.type.RelDataType arg0)
boolean	supportsModality(org.apache.calcite.sql.validate.SqlModality arg0)
protected org.apache.calcite.rel.type.RelDataType	toStruct(org.apache.calcite.rel.type.RelDataType arg0, org.apache.calcite.sql.SqlNode arg1)
String	translate(String name)
<T> T	unwrap(Class<T> arg0)
void	validate(org.apache.calcite.rel.type.RelDataType arg0)
protected org.apache.calcite.rel.type.RelDataType	validateImpl(org.apache.calcite.rel.type.RelDataType targetRowType)

Methods inherited from class java.lang.Object

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

Field Detail

call

protected final org.apache.calcite.sql.SqlCall call

validator

protected final SqlValidatorImpl validator

rowType

protected org.apache.calcite.rel.type.RelDataType rowType

type

protected org.apache.calcite.rel.type.RelDataType type

enclosingNode

protected final org.apache.calcite.sql.SqlNode enclosingNode

Constructor Detail

AliasNamespace

protected AliasNamespace(SqlValidatorImpl validator,
                         org.apache.calcite.sql.SqlCall call,
                         org.apache.calcite.sql.SqlNode enclosingNode)

Creates an AliasNamespace.

Parameters:

validator - Validator

call - Call to AS operator

enclosingNode - Enclosing node

Method Detail

validateImpl

protected org.apache.calcite.rel.type.RelDataType validateImpl(org.apache.calcite.rel.type.RelDataType targetRowType)

getNode

public org.apache.calcite.sql.SqlNode getNode()

translate

public String translate(String name)

getValidator

public org.apache.calcite.sql.validate.SqlValidator getValidator()

Specified by:

getValidator in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

validate

public final void validate(org.apache.calcite.rel.type.RelDataType arg0)

Specified by:

validate in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

getRowType

public org.apache.calcite.rel.type.RelDataType getRowType()

Specified by:

getRowType in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

getRowTypeSansSystemColumns

public org.apache.calcite.rel.type.RelDataType getRowTypeSansSystemColumns()

Specified by:

getRowTypeSansSystemColumns in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

getType

public org.apache.calcite.rel.type.RelDataType getType()

Specified by:

getType in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

setType

public void setType(org.apache.calcite.rel.type.RelDataType arg0)

Specified by:

setType in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

getEnclosingNode

public org.apache.calcite.sql.SqlNode getEnclosingNode()

Specified by:

getEnclosingNode in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

getTable

public org.apache.calcite.sql.validate.SqlValidatorTable getTable()

Specified by:

getTable in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

lookupChild

public org.apache.calcite.sql.validate.SqlValidatorNamespace lookupChild(String arg0)

Specified by:

lookupChild in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

fieldExists

public boolean fieldExists(String arg0)

Specified by:

fieldExists in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

getMonotonicExprs

public List<org.apache.calcite.util.Pair<org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.validate.SqlMonotonicity>> getMonotonicExprs()

Specified by:

getMonotonicExprs in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

getMonotonicity

public org.apache.calcite.sql.validate.SqlMonotonicity getMonotonicity(String arg0)

Specified by:

getMonotonicity in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

makeNullable

public void makeNullable()

Specified by:

makeNullable in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

resolve

public org.apache.calcite.sql.validate.SqlValidatorNamespace resolve()

Specified by:

resolve in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

supportsModality

public boolean supportsModality(org.apache.calcite.sql.validate.SqlModality arg0)

Specified by:

supportsModality in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

unwrap

public <T> T unwrap(Class<T> arg0)

Specified by:

unwrap in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

isWrapperFor

public boolean isWrapperFor(Class<?> arg0)

Specified by:

isWrapperFor in interface org.apache.calcite.sql.validate.SqlValidatorNamespace

convertToStruct

protected org.apache.calcite.rel.type.RelDataType convertToStruct(org.apache.calcite.rel.type.RelDataType arg0)

toStruct

protected org.apache.calcite.rel.type.RelDataType toStruct(org.apache.calcite.rel.type.RelDataType arg0,
                                                           org.apache.calcite.sql.SqlNode arg1)