oracle.olapi.data.source
Class ParameterVisitor

java.lang.Object
  oracle.olapi.data.source.ParameterVisitor

public abstract class ParameterVisitor
extends java.lang.Object

A visitor object that can execute operations on Parameter objects. A ParameterVisitor can implement polymorphic behavior without having access to the internal code of the Parameter subclasses.

Constructor Summary

ParameterVisitor()

Method Summary

java.lang.Object	visitBooleanParameter(BooleanParameter param, java.lang.Object context) Executes operations on the specified BooleanParameter.
java.lang.Object	visitDateParameter(DateParameter param, java.lang.Object context) Executes operations on the specified DateParameter.
java.lang.Object	visitNumberParameter(NumberParameter param, java.lang.Object context) Executes operations on the specified NumberParameter.
java.lang.Object	visitParameter(Parameter param, java.lang.Object context) Executes operations on any object that is a subclass of Parameter, which is useful when you do not need subclass-specific information.
java.lang.Object	visitStringParameter(StringParameter param, java.lang.Object context) Executes operations on the specified StringParameter.

Methods inherited from class java.lang.Object

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

Constructor Detail

ParameterVisitor

public ParameterVisitor()

Method Detail

visitParameter

public java.lang.Object visitParameter(Parameter param,
                                       java.lang.Object context)

Executes operations on any object that is a subclass of Parameter, which is useful when you do not need subclass-specific information. The default implementation of this method returns null.

Parameters:

param - A Parameter object.

context - An Object.

Returns:

An Object.

visitStringParameter

public java.lang.Object visitStringParameter(StringParameter param,
                                             java.lang.Object context)

Executes operations on the specified StringParameter. The default implementation of this method calls the visitParameter method.

Parameters:

param - A StringParameter object.

context - An Object.

Returns:

An Object.

visitDateParameter

public java.lang.Object visitDateParameter(DateParameter param,
                                           java.lang.Object context)

Executes operations on the specified DateParameter. The default implementation of this method calls the visitParameter method.

Parameters:

param - A DateParameter object.

context - An Object.

Returns:

An Object.

visitBooleanParameter

public java.lang.Object visitBooleanParameter(BooleanParameter param,
                                              java.lang.Object context)

Executes operations on the specified BooleanParameter. The default implementation of this method calls the visitParameter method.

Parameters:

param - A BooleanParameter object.

context - An Object.

Returns:

An Object.

visitNumberParameter

public java.lang.Object visitNumberParameter(NumberParameter param,
                                             java.lang.Object context)

Executes operations on the specified NumberParameter. The default implementation of this method calls the visitParameter method.

Parameters:

param - A NumberParameter object.

context - An Object.

Returns:

An Object.