Java tutorial
/* * This file is part of Dorado 7.x (http://dorado7.bsdn.org). * * Copyright (c) 2002-2012 BSTEK Corp. All rights reserved. * * This file is dual-licensed under the AGPLv3 (http://www.gnu.org/licenses/agpl-3.0.html) * and BSDN commercial (http://www.bsdn.org/licenses) licenses. * * If you are unsure which license is appropriate for your use, please contact the sales department * at http://www.bstek.com/contact. */ package com.bstek.dorado.data.config.xml; import java.util.Map; import org.apache.commons.lang.BooleanUtils; import org.apache.commons.lang.StringUtils; import org.w3c.dom.Element; import org.w3c.dom.Node; import com.bstek.dorado.config.ParseContext; import com.bstek.dorado.config.xml.ConfigurableDispatchableXmlParser; import com.bstek.dorado.config.xml.XmlConstants; import com.bstek.dorado.config.xml.XmlParseException; /** * DataType? * * @author Benny Bao (mailto:benny.bao@bstek.com) * @since 21 Feb 2007 */ public class PreloadDataTypeParser extends ConfigurableDispatchableXmlParser { @Override protected Object doParse(Node node, ParseContext context) throws Exception { DataParseContext dataContext = (DataParseContext) context; Element element = ((Element) node); String name = element.getAttribute(XmlConstants.ATTRIBUTE_NAME); if (StringUtils.isEmpty(name)) { throw new XmlParseException("[" + XmlConstants.ATTRIBUTE_NAME + "] attribute can not be empty", element, context); } Map<String, NodeWrapper> configuredDataTypes = dataContext.getConfiguredDataTypes(); if (configuredDataTypes.containsKey(name)) { boolean overwrite = BooleanUtils.toBoolean(element.getAttribute(DataXmlConstants.ATTRIBUTE_OVERWRITE)); if (!overwrite) { throw new XmlParseException(DataXmlConstants.DATA_TYPE + " [" + name + "] is not unique!", element, context); } } configuredDataTypes.put(name, new NodeWrapper(node, context.getResource())); return null; } }