
com.alipay.sofa.common.xmap.XAnnotatedObject Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.alipay.sofa.common.xmap;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import com.alipay.sofa.common.xmap.annotation.XObject;
/**
*
* @author Bogdan Stefanescu
* @author [email protected]
* @since 2.6.0
*/
public class XAnnotatedObject {
public final XMap xmap;
public final Class> klass;
public final Path path;
final List members;
Sorter sorter;
Sorter deSorter;
public XAnnotatedObject(XMap xmap, Class> klass, XObject xob) {
this.xmap = xmap;
this.klass = klass;
path = new Path(xob.value());
members = new ArrayList<>();
String[] order = xob.order();
if (order.length > 0) {
sorter = new Sorter(order);
}
}
public void addMember(XAnnotatedMember member) {
members.add(member);
}
public Path getPath() {
return path;
}
public Object newInstance(Context ctx, Element element) throws Exception {
Object ob = klass.newInstance();
ctx.push(ob);
if (sorter != null) {
Collections.sort(members, sorter);
deSorter = sorter;
sorter = null; // sort only once
}
// set annotated members
for (XAnnotatedMember member : members) {
member.process(ctx, element);
}
return ctx.pop();
}
public Object newInstance(Context ctx, Map map, String keyPrefix)
throws Exception {
Object ob = klass.newInstance();
ctx.push(ob);
// set annotated members
for (XAnnotatedMember member : members) {
member.process(ctx, map, keyPrefix);
}
return ctx.pop();
}
public void decode(Object instance, Node base, Document document, List filters)
throws Exception {
Node node = base;
String name = path.path;
if (sorter != null) {
deSorter = sorter;
}
if (deSorter != null) {
Collections.sort(members, deSorter);
deSorter = null; // sort only once
}
if (name != null && name.length() > 0) {
Element element = document.createElement(name);
node = node.appendChild(element);
}
for (XAnnotatedMember annotatedMember : members) {
annotatedMember.decode(instance, node, document, filters);
}
}
}
class Sorter implements Comparator {
private final Map order = new HashMap();
Sorter(String[] order) {
for (int i = 0; i < order.length; i++) {
this.order.put(order[i], i);
}
}
public int compare(XAnnotatedMember o1, XAnnotatedMember o2) {
Integer order1 = order.get(o1.path.path);
Integer order2 = order.get(o2.path.path);
int n1 = order1 == null ? Integer.MAX_VALUE : order1;
int n2 = order2 == null ? Integer.MAX_VALUE : order2;
return n1 - n2;
}
}
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