Java tutorial
/* * TeleStax, Open Source Cloud Communications * Copyright 2011-2014, Telestax Inc and individual contributors * by the @authors tag. * * This program is free software: you can redistribute it and/or modify * under the terms of the GNU Affero General Public License as * published by the Free Software Foundation; either version 3 of * the License, or (at your option) any later version. * * This program 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/> * */ package org.mobicents.servlet.restcomm.http.converter; import java.lang.reflect.Type; import org.apache.commons.configuration.Configuration; import org.joda.time.DateTime; import org.mobicents.servlet.restcomm.email.Mail; import org.mobicents.servlet.restcomm.entities.Sid; import com.google.gson.JsonElement; import com.google.gson.JsonNull; import com.google.gson.JsonObject; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; import com.thoughtworks.xstream.converters.MarshallingContext; import com.thoughtworks.xstream.io.HierarchicalStreamWriter; /** * @author eleftherios.banos@telestax.com (Lefteis Banos) */ public class EmailMessageConverter extends AbstractConverter implements JsonSerializer<Mail> { public EmailMessageConverter(final Configuration configuration) { super(configuration); } @SuppressWarnings("rawtypes") @Override public boolean canConvert(final Class klass) { return Mail.class.equals(klass); } @Override public void marshal(final Object object, final HierarchicalStreamWriter writer, final MarshallingContext context) { final Mail mailMessage = (Mail) object; writer.startNode("EmailMessage"); writeDateSent(mailMessage.dateSent(), writer); writeAccountSid(new Sid(mailMessage.accountSid()), writer); writeFrom(mailMessage.from(), writer); writeTo(mailMessage.to(), writer); writeBody(mailMessage.body(), writer); writeSubject(mailMessage.subject().toString(), writer); writer.endNode(); } @Override public JsonElement serialize(final Mail mailMessage, final Type type, final JsonSerializationContext context) { final JsonObject object = new JsonObject(); writeDateSent(mailMessage.dateSent(), object); writeAccountSid(new Sid(mailMessage.accountSid()), object); writeFrom(mailMessage.from(), object); writeTo(mailMessage.to(), object); writeBody(mailMessage.body(), object); writeSubject(mailMessage.subject().toString(), object); return object; } private void writeBody(final String body, final HierarchicalStreamWriter writer) { writer.startNode("Body"); if (body != null) { writer.setValue(body); } writer.endNode(); } private void writeBody(final String body, final JsonObject object) { if (body != null) { object.addProperty("body", body); } else { object.add("body", JsonNull.INSTANCE); } } private void writeDateSent(final DateTime dateSent, final HierarchicalStreamWriter writer) { writer.startNode("DateSent"); if (dateSent != null) { writer.setValue(dateSent.toString()); } writer.endNode(); } private void writeDateSent(final DateTime dateSent, final JsonObject object) { object.addProperty("date_sent", dateSent != null ? dateSent.toString() : null); } private void writeSubject(final String subject, final HierarchicalStreamWriter writer) { writer.startNode("Subject"); writer.setValue(subject); writer.endNode(); } private void writeSubject(final String subject, final JsonObject object) { object.addProperty("subject", subject); } }