001 /* 002 * Copyright © 2008, 2012 Pedro Agulló Soliveres. 003 * 004 * This file is part of DirectJNgine. 005 * 006 * DirectJNgine is free software: you can redistribute it and/or modify 007 * it under the terms of the GNU Lesser General Public License as published by 008 * the Free Software Foundation, either version 3 of the License. 009 * 010 * Commercial use is permitted to the extent that the code/component(s) 011 * do NOT become part of another Open Source or Commercially developed 012 * licensed development library or toolkit without explicit permission. 013 * 014 * DirectJNgine is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 017 * GNU Lesser General Public License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public License 020 * along with DirectJNgine. If not, see <http://www.gnu.org/licenses/>. 021 * 022 * This software uses the ExtJs library (http://extjs.com), which is 023 * distributed under the GPL v3 license (see http://extjs.com/license). 024 */ 025 026 package com.softwarementors.extjs.djn.gson; 027 028 import java.lang.reflect.Type; 029 import java.util.Date; 030 031 import com.google.gson.GsonBuilder; 032 import com.google.gson.JsonDeserializationContext; 033 import com.google.gson.JsonDeserializer; 034 import com.google.gson.JsonElement; 035 import com.google.gson.JsonParseException; 036 import com.google.gson.JsonPrimitive; 037 import com.google.gson.JsonSerializationContext; 038 import com.google.gson.JsonSerializer; 039 import com.softwarementors.extjs.djn.config.GlobalConfiguration; 040 041 public class DefaultGsonBuilderConfigurator implements GsonBuilderConfigurator { 042 043 private static class DateDeserializer implements JsonDeserializer<Date> { 044 public Date deserialize( JsonElement json, Type typeOfT, 045 JsonDeserializationContext context) 046 throws JsonParseException 047 { 048 assert json != null; 049 assert context != null; 050 assert typeOfT != null; 051 052 if( !json.isJsonPrimitive() ) { 053 throw new JsonParseException( "The value for a Date must be a valid number"); 054 } 055 056 assert json instanceof JsonPrimitive; // To please Findugs! 057 JsonPrimitive primitivejson = (JsonPrimitive)json; 058 if( !primitivejson.isNumber()) { 059 throw new JsonParseException( "The value for a Date must be a valid number"); 060 } 061 return new Date( primitivejson.getAsLong() ); 062 } 063 } 064 065 private static class DateSerializer implements JsonSerializer<Date> { 066 public JsonElement serialize( Date src, Type typeOfSrc, 067 JsonSerializationContext context) { 068 assert src != null; 069 assert context != null; 070 assert typeOfSrc != null; 071 072 JsonElement result = new JsonPrimitive( Long.valueOf(src.getTime()) ); 073 return result; 074 } 075 } 076 077 public void configure(GsonBuilder builder, GlobalConfiguration configuration) { 078 assert builder != null; 079 assert configuration != null; 080 081 if( configuration.getDebug() ) { 082 builder.setPrettyPrinting(); 083 } 084 builder.serializeNulls(); 085 builder.disableHtmlEscaping(); 086 087 builder.registerTypeAdapter( Date.class, new DateDeserializer()); 088 builder.registerTypeAdapter( Date.class, new DateSerializer()); 089 } 090 091 }