/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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.alibaba.citrus.service.mail.builder.content;
import static com.alibaba.citrus.util.Assert.*;
import com.alibaba.citrus.service.mail.MailService;
import com.alibaba.citrus.service.mail.builder.MailBuilder;
import com.alibaba.citrus.service.mail.builder.MailContent;
import com.alibaba.citrus.util.ToStringBuilder;
import com.alibaba.citrus.util.ToStringBuilder.MapBuilder;
/**
* 一个<code>MailContent</code>的基类。
*
* @author Michael Zhou
*/
public abstract class AbstractContent implements MailContent {
private String id;
private MailBuilder builder;
private MailContent parentContent;
/** 取得content的唯一ID，此ID在整个mail builder所包含的content中是唯一的。 */
public String getId() {
return id;
}
/** 设置content的唯一ID，此ID在整个mail builder所包含的content中是唯一的。 */
public void setId(String id) {
this.id = id;
}
/**
* 取得此content所属的mail builder。假如不存在，则抛<code>IllegalArgumentException</code>
* 异常。
*/
public MailBuilder getMailBuilder() {
return getMailBuilder(true);
}
/** 取得此content所属的mail builder。 */
protected final MailBuilder getMailBuilder(boolean required) {
if (builder != null) {
return builder;
}
if (parentContent != null) {
return parentContent.getMailBuilder();
}
if (required) {
throw new IllegalArgumentException("no mailBuilder");
}
return null;
}
/** 设置mail builder。 */
public void setMailBuilder(MailBuilder builder) {
this.builder = builder;
}
/** 取得包容此内容的父内容。 */
public MailContent getParentContent() {
return parentContent;
}
/** 设置包容此内容的父内容。 */
public void setParentContent(MailContent parentContent) {
this.parentContent = parentContent;
}
/** 深度复制一个content。 */
@Override
public final AbstractContent clone() {
String className = getClass().getSimpleName();
// new instance
AbstractContent copy = assertNotNull(newInstance(), "%s.newInstance() returned null", className);
assertTrue(copy.getClass().equals(getClass()), "%s.newInstance() returned an object of wrong class", className);
// copy to new instance
copyTo(copy);
copy.id = id;
return copy;
}
/** 创建一个同类型的content。 */
protected abstract AbstractContent newInstance();
/** 深度复制一个content。 */
protected void copyTo(AbstractContent copy) {
}
/**
* 用来取得指定类型的service的辅助方法。假如<code>defaultInstance</code>非空，则直接返回之，否则调用
* <code>getMailBuilder().getMailService().getService()</code>。
*/
protected final <T> T getService(Class<T> serviceType, String defaultId, T defaultInstance) {
if (defaultInstance != null) {
return defaultInstance;
}
MailBuilder builder = getMailBuilder(false);
if (builder != null) {
MailService mailService = builder.getMailService();
if (mailService != null) {
return mailService.getService(serviceType, defaultId);
}
}
return null;
}
@Override
public final String toString() {
ToStringBuilder buf = new ToStringBuilder();
buf.append(getClass().getSimpleName());
toString(buf);
return buf.toString();
}
protected void toString(ToStringBuilder buf) {
MapBuilder mb = new MapBuilder();
toString(mb);
buf.append(mb);
}
protected void toString(MapBuilder mb) {
}
}