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json tool basic on policy not annotation
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package org.beetl.json;
import java.util.Comparator;
import java.util.Map;
import org.beetl.json.node.PojoAttributeNode;
/**
* 属性排序，java原始类型排在前面，集合类型排在后面，业务对象排在中间。同类型的按照名字排序
* @author xiandafu
*
*/
public class AttributeComparator implements Comparator {
public int compare(Object o1, Object o2) {
PojoAttributeNode n1 = (PojoAttributeNode)o1;
PojoAttributeNode n2 = (PojoAttributeNode)o2;
int s1 = score(n1.getAttrType());
int s2 = score(n2.getAttrType());
if(s1==s2){
return n1.getAttrName().compareTo(n2.getAttrName());
}else{
return s1-s2;
}
}
private int score(Class type){
if(type.isArray()){
return 3;
}
Package pkg = type.getPackage();
if(pkg==null){
//原始类型
return 1;
}
String pkgName = type.getPackage().getName();
if(pkgName.startsWith("java.lang")){
return 1;
}else if(pkgName.startsWith("java.util")){
if(Iterable.class.isAssignableFrom(type)||Map.class.isAssignableFrom(type)){
return 4;
}else{
return 3;
}
}else{
return 2;
}
}
}