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/*
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* This program is a part of the IoTa project.
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*
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* Copyright © 2013 Université de Caen Basse-Normandie, GREYC
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* <http://www.gnu.org/licenses/>
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*
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* See AUTHORS for a list of contributors.
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*/
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package fr.unicaen.iota.mu;
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import java.util.List;
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import javax.xml.parsers.DocumentBuilder;
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import javax.xml.parsers.DocumentBuilderFactory;
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import javax.xml.parsers.ParserConfigurationException;
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import org.fosstrak.epcis.model.AggregationEventType;
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import org.fosstrak.epcis.model.EPCISEventType;
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import org.fosstrak.epcis.model.ObjectEventType;
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import org.fosstrak.epcis.model.QuantityEventType;
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import org.fosstrak.epcis.model.TransactionEventType;
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import org.w3c.dom.Document;
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import org.w3c.dom.Element;
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import org.w3c.dom.Text;
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public class Utils {
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/**
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* Inserts an extension in the event.
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* @param event The event to process.
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* @param namespace The namespace of the extension. To set a prefix, set <code>extensionName</code>.
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* @param extensionName The name of the extension. To set prefeix, use <code>prefix:extensionName</code>.
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* @param extensionValue The value of the extension.
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* @return <code>True</code> if the extension is correctly added.
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* @throws ParserConfigurationException if an error occured during insertion of the owner of the event.
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*/
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public static boolean insertExtension(EPCISEventType event, String namespace,
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String extensionName, String extensionValue) throws ParserConfigurationException {
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List<Object> extensions;
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if (event instanceof ObjectEventType) {
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extensions = ((ObjectEventType) event).getAny();
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} else if (event instanceof AggregationEventType) {
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extensions = ((AggregationEventType) event).getAny();
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} else if (event instanceof QuantityEventType) {
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extensions = ((QuantityEventType) event).getAny();
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} else if (event instanceof TransactionEventType) {
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extensions = ((TransactionEventType) event).getAny();
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} else {
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return false;
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}
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DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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DocumentBuilder db = factory.newDocumentBuilder();
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Document doc = db.newDocument();
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Element elem = doc.createElementNS(namespace, extensionName);
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Text senderText = doc.createTextNode(extensionValue);
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elem.appendChild(senderText);
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extensions.add(elem);
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return true;
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}
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}
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