Package org.apache.calcite.sql.util

Class SqlShuttle

java.lang.Object

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

org.apache.calcite.sql.util.SqlShuttle

All Implemented Interfaces:

SqlVisitor<SqlNode>

Direct Known Subclasses:

SqlScopedShuttle, SqlValidatorImpl.NavigationModifier

public class SqlShuttle
extends SqlBasicVisitor<SqlNode>

Basic implementation of SqlVisitor which returns each leaf node unchanged.

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

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	SqlShuttle.CallCopyingArgHandler	Implementation of SqlBasicVisitor.ArgHandler that deep-copies SqlCalls and their operands.

Nested classes/interfaces inherited from class org.apache.calcite.sql.util.SqlBasicVisitor

SqlBasicVisitor.ArgHandler<R>, SqlBasicVisitor.ArgHandlerImpl<R>

Constructor Summary

Constructors

Constructor	Description
SqlShuttle()

Method Summary

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

SqlShuttle

public SqlShuttle()

Method Detail

visit

public SqlNode visit(SqlLiteral literal)

Description copied from interface: SqlVisitor

Visits a literal.

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<SqlNode>

Parameters:

literal - Literal

See Also:

SqlLiteral.accept(SqlVisitor)

visit

public SqlNode visit(SqlIdentifier id)

Description copied from interface: SqlVisitor

Visits an identifier.

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<SqlNode>

Parameters:

id - identifier

See Also:

SqlIdentifier.accept(SqlVisitor)

visit

public SqlNode visit(SqlDataTypeSpec type)

Description copied from interface: SqlVisitor

Visits a datatype specification.

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<SqlNode>

Parameters:

type - datatype specification

See Also:

SqlDataTypeSpec.accept(SqlVisitor)

visit

public SqlNode visit(SqlDynamicParam param)

Description copied from interface: SqlVisitor

Visits a dynamic parameter.

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<SqlNode>

Parameters:

param - Dynamic parameter

See Also:

SqlDynamicParam.accept(SqlVisitor)

visit

public SqlNode visit(SqlIntervalQualifier intervalQualifier)

Description copied from interface: SqlVisitor

Visits an interval qualifier

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<SqlNode>

Parameters:

intervalQualifier - Interval qualifier

See Also:

SqlIntervalQualifier.accept(SqlVisitor)

visit

public SqlNode visit(SqlCall call)

Description copied from interface: SqlVisitor

Visits a call to a SqlOperator.

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<SqlNode>

Parameters:

call - Call

See Also:

SqlCall.accept(SqlVisitor)

visit

public SqlNode visit(SqlNodeList nodeList)

Description copied from interface: SqlVisitor

Visits a list of SqlNode objects.

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<SqlNode>

Parameters:

nodeList - list of nodes

See Also:

SqlNodeList.accept(SqlVisitor)