/**
*
* APDPlat - Application Product Development Platform
* Copyright (c) 2013, 杨尚川, yang-shangchuan@qq.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package org.apdplat.module.dictionary.service;
import org.apdplat.module.dictionary.model.Dic;
import org.apdplat.module.dictionary.model.DicItem;
import org.apdplat.platform.log.APDPlatLogger;
import org.apdplat.platform.log.APDPlatLoggerFactory;
import org.apdplat.platform.util.FileUtils;
import org.apdplat.platform.util.XMLFactory;
import org.apdplat.platform.util.XMLUtils;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
/**
*
* @author 杨尚川
*/
public class DicParser {
private static final APDPlatLogger LOG = APDPlatLoggerFactory.getAPDPlatLogger(DicParser.class);
private static final String dtdFile="/target/dic.dtd";
/**
* 返回所有Dic对象中dicItems不为空的Dic对象
* @return
*/
public static List<Dic> getLeafDics(){
List<Dic> dics=getDics();
List<Dic> result=new ArrayList<>();
for(Dic dic : dics){
execute(result,dic);
}
return result;
}
private static void execute(List<Dic> result,Dic dic){
if(dic.getDicItems().size()>0){
result.add(dic);
}
for(Dic item : dic.getSubDics()){
execute(result,item);
}
}
/**
* 将多个META-INF/services/dic.xml文件进行解析，每一个文件对应一个Dic对象
* @return
*/
public static List<Dic> getDics(){
List<Dic> dics=new ArrayList<>();
//准备数据字典DTD文件以供校验使用
prepareDtd();
try{
Enumeration<URL> ps = Thread.currentThread().getContextClassLoader().getResources("META-INF/services/dic.xml");
while(ps.hasMoreElements()) {
InputStream in = null;
try {
URL url=ps.nextElement();
LOG.info("找到数据字典描述文件(Find data dictionary description file)："+url.getPath());
in = url.openStream();
byte[] data=FileUtils.readAll(in);
String xml=new String(data,"utf-8");
LOG.info("将DTD文件替换为绝对路径(Replace DID file into absolute path)");
xml=xml.replace("dic.dtd", FileUtils.getAbsolutePath(dtdFile));
LOG.info("将数据字典文件读取到字节数组中，长度为(Load data dictionary into byte array, the length is)："+data.length);
ByteArrayInputStream bin=new ByteArrayInputStream(xml.getBytes("utf-8"));
LOG.info("注册dic.xml文件(Register dic.xml file)");
LOG.info("验证dic.xml文件(Verify dic.xml file )");
//校验文件
verifyFile(bin);
// 解析数据字典
parseDic(xml,dics);
}catch(Exception e)
{
LOG.error("解析数据字典出错(Error in parsing the data dictionary)",e);
}
finally {
try {
in.close();
} catch (IOException e) {
LOG.error("解析数据字典出错(Error in parsing the data dictionary)",e);
}
}
}
}catch(Exception e){
LOG.error("解析数据字典出错(Error in parsing the data dictionary)",e);
}
return dics;
}
private static void parseDic(String xml, List<Dic> dics) {
XMLFactory factory=new XMLFactory(Dic.class,DicItem.class);
Dic dic=factory.unmarshal(xml);
//将XML表示的数据字典转变为JAVA对象表示的数据字典
assembleDic(dic);
dics.add(dic);
}
/**
* 采用递归的方式建立数据字典树的引用关系
* @param dic 数据字典树的根
*/
private static void assembleDic(Dic dic){
Integer i=1;
for(DicItem c : dic.getDicItems()){
c.setDic(dic);
if(c.getOrderNum()==0){
c.setOrderNum(i++);
}
if(c.getCode()==null){
c.setCode(i.toString());
}
}
for(Dic d : dic.getSubDics()){
d.setParentDic(dic);
assembleDic(d);
}
}
private static void prepareDtd(){
try{
Enumeration<URL> ps = Thread.currentThread().getContextClassLoader().getResources("META-INF/services/dic.dtd");
if(ps.hasMoreElements()) {
InputStream in = null;
try {
URL url=ps.nextElement();
LOG.info("找到数据字典DTD文件(Find data dictionary DID file)："+url.getPath());
in = url.openStream();
byte[] data=FileUtils.readAll(in);
LOG.info("将DTD复制到(Copy DID to)："+dtdFile);
FileUtils.createAndWriteFile(dtdFile, data);
}catch(Exception e)
{
LOG.error("解析数据字典出错(Error in parsing the data dictionary)",e);
}
finally {
try {
in.close();
} catch (IOException e) {
LOG.error("解析数据字典出错(Error in parsing the data dictionary)",e);
}
}
}else{
LOG.info("没有找到数据字典DTD文件(Miss the data dictionary DID file)");
}
}catch(Exception e){
LOG.error("解析数据字典出错(Error in parsing the data dictionary)",e);
}
}
private static void verifyFile(InputStream in){
boolean pass=XMLUtils.validateXML(in);
if(!pass){
LOG.info("验证没有通过，请参考dic.dtd文件(Validation failed, please refer to dic.dtd file)");
return ;
}
LOG.info("验证通过(Validation succeed)");
}
private static void print(Dic dic,String pre){
System.out.println(pre+dic.getChinese()+":"+dic.getEnglish());
for(DicItem item : dic.getDicItems()){
System.out.println(pre+" "+item.getCode()+":"+item.getName()+":"+item.getOrderNum());
}
for(Dic sub : dic.getSubDics()){
print(sub,pre+" ");
}
}
public static void main(String[] args){
for(Dic dic : getDics()){
print(dic,"");
}
}
}