com.jdon.container.visitor.ComponentVisitor Maven / Gradle / Ivy
/**
* Copyright 2003-2005 the original author or authors.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jdon.container.visitor;
import java.io.Serializable;
import com.jdon.container.visitor.data.SessionContext;
/**
* Visitor pattern
* ComponentVisitor is a actor of Visitor, it do not need
* many access method, such as:
* visitAcomponent();
* visitBcomponent();
* ...
* because all these components has registered in container,
* we can get them from container.
*
* there are two concrete classes:
* @see com.jdon.container.visitor.ComponentOriginalVisitor
* @see com.jdon.container.visitor.http.HttpSessionProxyComponentVisitor
* @author banq
*/
public interface ComponentVisitor extends Serializable{
/**
* using this method, the component that implements Visitable interface
* will be executed, and return the running result.
*
* @param targetMetaDef target service meta
* @return the result of the component run
*/
Object visit();
SessionContext createSessionContext();
}