org.apache.calcite.sql.validate

Class SqlValidatorImpl.DeriveTypeVisitor

java.lang.Object

org.apache.calcite.sql.validate.SqlValidatorImpl.DeriveTypeVisitor

All Implemented Interfaces:

SqlVisitor<RelDataType>

Enclosing class:

SqlValidatorImpl

private class SqlValidatorImpl.DeriveTypeVisitor
extends Object
implements SqlVisitor<RelDataType>

Visitor which derives the type of a given SqlNode.

Each method must return the derived type. This visitor is basically a single-use dispatcher; the visit is never recursive.

Field Summary

Fields

Modifier and Type	Field and Description
private SqlValidatorScope	scope

Constructor Summary

Constructors

Constructor and Description
DeriveTypeVisitor(SqlValidatorScope scope)

Method Summary

Modifier and Type	Method and Description
RelDataType	visit(SqlCall call) Visits a call to a SqlOperator.
RelDataType	visit(SqlDataTypeSpec dataType) Visits a datatype specification.
RelDataType	visit(SqlDynamicParam param) Visits a dynamic parameter.
RelDataType	visit(SqlIdentifier id) Visits an identifier.
RelDataType	visit(SqlIntervalQualifier intervalQualifier) Visits an interval qualifier
RelDataType	visit(SqlLiteral literal) Visits a literal.
RelDataType	visit(SqlNodeList nodeList) Visits a list of SqlNode objects.

Methods inherited from class java.lang.Object

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

Field Detail

scope

private final SqlValidatorScope scope

Constructor Detail

DeriveTypeVisitor

DeriveTypeVisitor(SqlValidatorScope scope)

Method Detail

visit

public RelDataType visit(SqlLiteral literal)

Description copied from interface: SqlVisitor

Visits a literal.

Specified by:

visit in interface SqlVisitor<RelDataType>

Parameters:

literal - Literal

See Also:

SqlLiteral.accept(SqlVisitor)

visit

public RelDataType visit(SqlCall call)

Description copied from interface: SqlVisitor

Visits a call to a SqlOperator.

Specified by:

visit in interface SqlVisitor<RelDataType>

Parameters:

call - Call

See Also:

SqlCall.accept(SqlVisitor)

visit

public RelDataType visit(SqlNodeList nodeList)

Description copied from interface: SqlVisitor

Visits a list of SqlNode objects.

Specified by:

visit in interface SqlVisitor<RelDataType>

Parameters:

nodeList - list of nodes

See Also:

SqlNodeList.accept(SqlVisitor)

visit

public RelDataType visit(SqlIdentifier id)

Description copied from interface: SqlVisitor

Visits an identifier.

Specified by:

visit in interface SqlVisitor<RelDataType>

Parameters:

id - identifier

See Also:

SqlIdentifier.accept(SqlVisitor)

visit

public RelDataType visit(SqlDataTypeSpec dataType)

Description copied from interface: SqlVisitor

Visits a datatype specification.

Specified by:

visit in interface SqlVisitor<RelDataType>

Parameters:

dataType - datatype specification

See Also:

SqlDataTypeSpec.accept(SqlVisitor)

visit

public RelDataType visit(SqlDynamicParam param)

Description copied from interface: SqlVisitor

Visits a dynamic parameter.

Specified by:

visit in interface SqlVisitor<RelDataType>

Parameters:

param - Dynamic parameter

See Also:

SqlDynamicParam.accept(SqlVisitor)

visit

public RelDataType visit(SqlIntervalQualifier intervalQualifier)

Description copied from interface: SqlVisitor

Visits an interval qualifier

Specified by:

visit in interface SqlVisitor<RelDataType>

Parameters:

intervalQualifier - Interval qualifier

See Also:

SqlIntervalQualifier.accept(SqlVisitor)