visitors

Interface IVisitor

All Known Implementing Classes:

Visitor1, Visitor2

public interface IVisitor

An abstract visitor to an IHost object. Provides cases for each IHost subclass type.

Author:

swong

Field Summary

Fields

Modifier and Type	Field and Description
static IVisitor	NULL_VISITOR A null visitor, used when no visitor is yet defined.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	caseHostA(HostA host, java.lang.Object... params) Case for HostA
java.lang.Object	caseHostB(HostB host, java.lang.Object... params) Case for HostB
java.lang.Object	caseHostC(HostC host, java.lang.Object... params) Case for HostC

Field Detail

NULL_VISITOR

static final IVisitor NULL_VISITOR

A null visitor, used when no visitor is yet defined. Simply returns a string indicating which host executed this visitor.

Method Detail

caseHostA

java.lang.Object caseHostA(HostA host,
                         java.lang.Object... params)

Case for HostA

Parameters:

host - The HostA instance

params - Optional input parameters

Returns:

The result of processing HostA with the given parameters.

caseHostB

java.lang.Object caseHostB(HostB host,
                         java.lang.Object... params)

Case for HostB

Parameters:

host - The HostB instance

params - Optional input parameters

Returns:

The result of processing HostB with the given parameters.

caseHostC

java.lang.Object caseHostC(HostC host,
                         java.lang.Object... params)

Case for HostC

Parameters:

host - The HostC instance

params - Optional input parameters

Returns:

The result of processing HostC with the given parameters.