org.apache.calcite.sql.validate

Class TableConstructorNamespace

java.lang.Object

org.apache.calcite.sql.validate.AbstractNamespace

org.apache.calcite.sql.validate.TableConstructorNamespace

All Implemented Interfaces:

SqlValidatorNamespace

public class TableConstructorNamespace
extends AbstractNamespace

Namespace for a table constructor VALUES (expr, expr, ...).

Field Summary

Fields

Modifier and Type	Field and Description
private SqlValidatorScope	scope
private SqlCall	values

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

enclosingNode, rowType, type, validator

Constructor Summary

Constructors

Constructor and Description
TableConstructorNamespace(SqlValidatorImpl validator, SqlCall values, SqlValidatorScope scope, SqlNode enclosingNode) Creates a TableConstructorNamespace.

Method Summary

Modifier and Type	Method and Description
SqlNode	getNode() Returns the parse tree node at the root of this namespace.
SqlValidatorScope	getScope() Returns the scope.
boolean	supportsModality(SqlModality modality) Returns whether this namespace is capable of giving results of the desired modality.
protected 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, toStruct, translate, unwrap, validate

Methods inherited from class java.lang.Object

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

Field Detail

values

private final SqlCall values

scope

private final SqlValidatorScope scope

Constructor Detail

TableConstructorNamespace

TableConstructorNamespace(SqlValidatorImpl validator,
                          SqlCall values,
                          SqlValidatorScope scope,
                          SqlNode enclosingNode)

Creates a TableConstructorNamespace.

Parameters:

validator - Validator

values - VALUES parse tree node

scope - Scope

enclosingNode - Enclosing node

Method Detail

validateImpl

protected 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 SqlNode getNode()

Description copied from interface: SqlValidatorNamespace

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

Returns:

parse tree node; null for TableNamespace

getScope

public SqlValidatorScope getScope()

Returns the scope.

Returns:

scope

supportsModality

public boolean supportsModality(SqlModality modality)

Description copied from interface: SqlValidatorNamespace

Returns whether this namespace is capable of giving results of the desired modality. true means streaming, false means relational.

Specified by:

supportsModality in interface SqlValidatorNamespace

Overrides:

supportsModality in class AbstractNamespace

Parameters:

modality - Modality