Mercurial > hg > release > thermostat-1.0
view web/common/src/main/java/com/redhat/thermostat/web/common/ThermostatGSONConverter.java @ 1412:a0592d702416
Update copyright year in release branch.
reviewed-by: neugens
review-thread: http://icedtea.classpath.org/pipermail/thermostat/2014-June/009965.html
PR1821
author | Jon VanAlten <jon.vanalten@redhat.com> |
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date | Tue, 03 Jun 2014 11:55:56 -0600 |
parents | 03ed49a50413 |
children |
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/* * Copyright 2012-2014 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat 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 2, or (at your * option) any later version. * * Thermostat 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 Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.web.common; import java.beans.PropertyDescriptor; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Type; import org.apache.commons.beanutils.PropertyUtils; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonParseException; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; import com.redhat.thermostat.storage.core.Entity; import com.redhat.thermostat.storage.core.Persist; import com.redhat.thermostat.storage.model.Pojo; public class ThermostatGSONConverter implements JsonSerializer<Pojo>, JsonDeserializer<Pojo> { @Override public Pojo deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { @SuppressWarnings("unchecked") Class<? extends Pojo> targetType = (Class<Pojo>) typeOfT; try { Pojo pojo = targetType.newInstance(); PropertyDescriptor[] descs = PropertyUtils.getPropertyDescriptors(pojo); for (PropertyDescriptor desc : descs) { Method writeMethod = desc.getWriteMethod(); if (writeMethod != null && writeMethod.isAnnotationPresent(Persist.class)) { String name = desc.getName(); JsonElement child = json.getAsJsonObject().get(name); Object value = context.deserialize(child, desc.getPropertyType()); PropertyUtils.setProperty(pojo, name, value); } } return pojo; } catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) { throw new RuntimeException(e); } } @Override public JsonElement serialize(Pojo src, Type typeOfSrc, JsonSerializationContext context) { Class<?> cls = (Class<?>) typeOfSrc; if (! cls.isAnnotationPresent(Entity.class)) { System.err.println("attempt to serialize non-Entity class: " + cls.getName()); throw new IllegalArgumentException("attempt to serialize non-Entity class: " + cls.getName()); } JsonObject obj = new JsonObject(); PropertyDescriptor[] descs = PropertyUtils.getPropertyDescriptors(src); for (PropertyDescriptor desc : descs) { Method readMethod = desc.getReadMethod(); if (readMethod != null && readMethod.isAnnotationPresent(Persist.class)) { String name = desc.getName(); try { Object value = PropertyUtils.getProperty(src, name); obj.add(name, context.serialize(value)); } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) { throw new RuntimeException(e); } } else if (readMethod == null) { System.err.println("WARNING: property without read method: " + src.getClass().getName() + "::" + desc.getName()); } } return obj; } }