com.jdon.controller.model.Model Maven / Gradle / Ivy
/*
* Copyright 2003-2009 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.controller.model;
/**
* Base domain model it can be DTO or nested Model. it is the important message
* between business layer and view layer. in view layer, it is created by form
* object(such as ActionForm object)；in business layer, it is created by
* business components(such as session bean).
*
* thi class can be cached, and setModified is important, this method can be
* used to refresh the cache.
*
* because setModified function ,so the class is designed for a class, but not a
* interface.
*
* the difference with setModified and setCacheable; setCacheable to false, the
* model will never exist in the cache. setModified to true, if the model exists
* in the cache, the client will not get it from cache, it is same as being
* deleted from cache . deleting the model from cache must have a condition that
* the deleting operator can access the cache of the container, if it cann't
* access the container, it cann't delete the model from cache. such it is EJB.
*
*
*
* @author banq
*/
public class Model implements ModelIF {
/**
*
*/
private static final long serialVersionUID = 3944062684510613038L;
/**
* if set false, this Model will not be saved to cache, so this model will
* not be got from the cache.
*/
private volatile boolean cacheable = true;
/**
* if set true, this model will not be got from the cache, because it must
* have been saved in the cache. this function is same as deleting the model
* from the cache.
*/
private volatile boolean modified;
/**
* in the past version, this method name is isCacheble, now change it after
* 1.3 !
*/
public boolean isCacheable() {
return cacheable;
}
/**
* in the past version, this method name is setCacheble, now change it after
* 1.3 !
*/
public void setCacheable(boolean cacheable) {
this.cacheable = cacheable;
}
public boolean isModified() {
return modified;
}
/**
* set the property has been modified such as : setName(String name){
* this.name = name; setModified(true); }
*/
public void setModified(boolean modified) {
this.modified = modified;
}
}