Package org.apache.calcite.sql.util

Class SqlShuttle

java.lang.Object

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

org.apache.calcite.sql.util.SqlShuttle

All Implemented Interfaces:

SqlVisitor<SqlNode>

Direct Known Subclasses:

SqlScopedShuttle

public class SqlShuttle
extends SqlBasicVisitor<@Nullable 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
@Nullable SqlNode	visit(SqlCall call)	Visits a call to a SqlOperator.
@Nullable SqlNode	visit(SqlDataTypeSpec type)	Visits a datatype specification.
@Nullable SqlNode	visit(SqlDynamicParam param)	Visits a dynamic parameter.
@Nullable SqlNode	visit(SqlIdentifier id)	Visits an identifier.
@Nullable SqlNode	visit(SqlIntervalQualifier intervalQualifier)	Visits an interval qualifier.
@Nullable SqlNode	visit(SqlLiteral literal)	Visits a literal.
@Nullable 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

Methods inherited from interface org.apache.calcite.sql.util.SqlVisitor

visitAll, visitNode

Constructor Details

SqlShuttle

public SqlShuttle()

Method Details

visit

public @Nullable SqlNode visit(SqlLiteral literal)

Description copied from interface: SqlVisitor

Visits a literal.

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<@Nullable SqlNode>

Parameters:

literal - Literal

See Also:

• SqlLiteral.accept(SqlVisitor)

visit

public @Nullable SqlNode visit(SqlIdentifier id)

Description copied from interface: SqlVisitor

Visits an identifier.

Specified by:

visit in interface SqlVisitor<SqlNode>

Overrides:

visit in class SqlBasicVisitor<@Nullable SqlNode>

Parameters:

id - identifier

See Also:

• SqlIdentifier.accept(SqlVisitor)

visit

public @Nullable 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<@Nullable SqlNode>

Parameters:

type - datatype specification

See Also:

• SqlDataTypeSpec.accept(SqlVisitor)

visit

public @Nullable 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<@Nullable SqlNode>

Parameters:

param - Dynamic parameter

See Also:

• SqlDynamicParam.accept(SqlVisitor)

visit

public @Nullable 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<@Nullable SqlNode>

Parameters:

intervalQualifier - Interval qualifier

See Also:

• SqlIntervalQualifier.accept(SqlVisitor)

visit

public @Nullable 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<@Nullable SqlNode>

Parameters:

call - Call

See Also:

• SqlCall.accept(SqlVisitor)

visit

public @Nullable 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<@Nullable SqlNode>

Parameters:

nodeList - list of nodes

See Also:

• SqlNodeList.accept(SqlVisitor)