Package org.apache.calcite.sql.util

Class SqlBasicVisitor<R>

java.lang.Object

org.apache.calcite.sql.util.SqlBasicVisitor<R>

Type Parameters:

R - Return type

All Implemented Interfaces:

SqlVisitor<R>

Direct Known Subclasses:

AggChecker, AggVisitor, SqlBetweenOperator.AndFinder, SqlShuttle, SqlToRelConverter.AggregateFinder, SqlUtil.Genealogist, SqlValidatorImpl.PatternValidator, Util.OverFinder

public class SqlBasicVisitor<R>
extends java.lang.Object
implements SqlVisitor<R>

Basic implementation of SqlVisitor which does nothing at each node.

This class is useful as a base class for classes which implement the SqlVisitor interface. The derived class can override whichever methods it chooses.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	SqlBasicVisitor.ArgHandler<R>	Argument handler.
static class	SqlBasicVisitor.ArgHandlerImpl<R>	Default implementation of SqlBasicVisitor.ArgHandler which merely calls SqlNode.accept(org.apache.calcite.sql.util.SqlVisitor<R>) on each operand.

Constructor Summary

Constructors

Constructor	Description
SqlBasicVisitor()

Method Summary

Modifier and Type	Method	Description
R	visit(SqlCall call)	Visits a call to a SqlOperator.
R	visit(SqlDataTypeSpec type)	Visits a datatype specification.
R	visit(SqlDynamicParam param)	Visits a dynamic parameter.
R	visit(SqlIdentifier id)	Visits an identifier.
R	visit(SqlIntervalQualifier intervalQualifier)	Visits an interval qualifier
R	visit(SqlLiteral literal)	Visits a literal.
R	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

Constructor Detail

SqlBasicVisitor

public SqlBasicVisitor()

Method Detail

visit

public R visit(SqlLiteral literal)

Description copied from interface: SqlVisitor

Visits a literal.

Specified by:

visit in interface SqlVisitor<R>

Parameters:

literal - Literal

See Also:

SqlLiteral.accept(SqlVisitor)

visit

public R visit(SqlCall call)

Description copied from interface: SqlVisitor

Visits a call to a SqlOperator.

Specified by:

visit in interface SqlVisitor<R>

Parameters:

call - Call

See Also:

SqlCall.accept(SqlVisitor)

visit

public R visit(SqlNodeList nodeList)

Description copied from interface: SqlVisitor

Visits a list of SqlNode objects.

Specified by:

visit in interface SqlVisitor<R>

Parameters:

nodeList - list of nodes

See Also:

SqlNodeList.accept(SqlVisitor)

visit

public R visit(SqlIdentifier id)

Description copied from interface: SqlVisitor

Visits an identifier.

Specified by:

visit in interface SqlVisitor<R>

Parameters:

id - identifier

See Also:

SqlIdentifier.accept(SqlVisitor)

visit

public R visit(SqlDataTypeSpec type)

Description copied from interface: SqlVisitor

Visits a datatype specification.

Specified by:

visit in interface SqlVisitor<R>

Parameters:

type - datatype specification

See Also:

SqlDataTypeSpec.accept(SqlVisitor)

visit

public R visit(SqlDynamicParam param)

Description copied from interface: SqlVisitor

Visits a dynamic parameter.

Specified by:

visit in interface SqlVisitor<R>

Parameters:

param - Dynamic parameter

See Also:

SqlDynamicParam.accept(SqlVisitor)

visit

public R visit(SqlIntervalQualifier intervalQualifier)

Description copied from interface: SqlVisitor

Visits an interval qualifier

Specified by:

visit in interface SqlVisitor<R>

Parameters:

intervalQualifier - Interval qualifier

See Also:

SqlIntervalQualifier.accept(SqlVisitor)