| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.util.ajax; |
| |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.jetty.util.ajax.JSON.Output; |
| |
| /** |
| * Convert an Object to JSON using reflection on getters methods. |
| */ |
| public class JSONObjectConvertor implements JSON.Convertor |
| { |
| private boolean _fromJSON; |
| private Set _excluded=null; |
| |
| public JSONObjectConvertor() |
| { |
| _fromJSON=false; |
| } |
| |
| public JSONObjectConvertor(boolean fromJSON) |
| { |
| _fromJSON=fromJSON; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * @param fromJSON true to convert from JSON |
| * @param excluded An array of field names to exclude from the conversion |
| */ |
| public JSONObjectConvertor(boolean fromJSON,String[] excluded) |
| { |
| _fromJSON=fromJSON; |
| if (excluded!=null) |
| _excluded=new HashSet(Arrays.asList(excluded)); |
| } |
| |
| public Object fromJSON(Map map) |
| { |
| if (_fromJSON) |
| throw new UnsupportedOperationException(); |
| return map; |
| } |
| |
| public void toJSON(Object obj, Output out) |
| { |
| try |
| { |
| Class c=obj.getClass(); |
| |
| if (_fromJSON) |
| out.addClass(obj.getClass()); |
| |
| Method[] methods = obj.getClass().getMethods(); |
| |
| for (int i=0;i<methods.length;i++) |
| { |
| Method m=methods[i]; |
| if (!Modifier.isStatic(m.getModifiers()) && |
| m.getParameterCount()==0 && |
| m.getReturnType()!=null && |
| m.getDeclaringClass()!=Object.class) |
| { |
| String name=m.getName(); |
| if (name.startsWith("is")) |
| name=name.substring(2,3).toLowerCase(Locale.ENGLISH)+name.substring(3); |
| else if (name.startsWith("get")) |
| name=name.substring(3,4).toLowerCase(Locale.ENGLISH)+name.substring(4); |
| else |
| continue; |
| |
| if (includeField(name,obj,m)) |
| out.add(name, m.invoke(obj,(Object[])null)); |
| } |
| } |
| } |
| catch (Throwable e) |
| { |
| throw new IllegalArgumentException(e); |
| } |
| } |
| |
| protected boolean includeField(String name, Object o, Method m) |
| { |
| return _excluded==null || !_excluded.contains(name); |
| } |
| |
| } |