org.apache.calcite.sql.util

Interface SqlVisitor<R>

Type Parameters:

R - Return type

All Known Implementing Classes:

SqlBasicVisitor, SqlScopedShuttle, SqlShuttle, SqlToRelConverter.AggConverter, SqlToRelConverter.Blackboard, SqlValidatorUtil.DeepCopier

public interface SqlVisitor<R>

Visitor class, follows the visitor pattern.

The type parameter R is the return type of each visit() method. If the methods do not need to return a value, use Void.

See Also:

SqlBasicVisitor, SqlNode.accept(SqlVisitor), SqlOperator.acceptCall(org.apache.calcite.sql.util.SqlVisitor<R>, org.apache.calcite.sql.SqlCall)

Method Summary

Methods

Modifier and Type	Method and 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.

Method Detail

visit

R visit(SqlLiteral literal)

Visits a literal.

Parameters:

literal - Literal

See Also:

SqlLiteral.accept(SqlVisitor)

visit

R visit(SqlCall call)

Visits a call to a SqlOperator.

Parameters:

call - Call

See Also:

SqlCall.accept(SqlVisitor)

visit

R visit(SqlNodeList nodeList)

Visits a list of SqlNode objects.

Parameters:

nodeList - list of nodes

See Also:

SqlNodeList.accept(SqlVisitor)

visit

R visit(SqlIdentifier id)

Visits an identifier.

Parameters:

id - identifier

See Also:

SqlIdentifier.accept(SqlVisitor)

visit

R visit(SqlDataTypeSpec type)

Visits a datatype specification.

Parameters:

type - datatype specification

See Also:

SqlDataTypeSpec.accept(SqlVisitor)

visit

R visit(SqlDynamicParam param)

Visits a dynamic parameter.

Parameters:

param - Dynamic parameter

See Also:

SqlDynamicParam.accept(SqlVisitor)

visit

R visit(SqlIntervalQualifier intervalQualifier)

Visits an interval qualifier

Parameters:

intervalQualifier - Interval qualifier

See Also:

SqlIntervalQualifier.accept(SqlVisitor)