com.bstek.dorado.data.config.xml.PreloadDataResolverParser.java Source code

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Here is the source code for com.bstek.dorado.data.config.xml.PreloadDataResolverParser.java

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/*
 * 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;

/**
 * @author Benny Bao (mailto:benny.bao@bstek.com)
 * @since Apr 29, 2009
 */
public class PreloadDataResolverParser 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 of ["
                    + DataXmlConstants.DATA_RESOLVER + "] can not be empty - [" + dataContext.getResource() + "]",
                    element, context);
        }

        Map<String, NodeWrapper> configuredDataResolvers = dataContext.getConfiguredDataResolvers();
        if (configuredDataResolvers.containsKey(name)) {
            boolean overwrite = BooleanUtils.toBoolean(element.getAttribute(DataXmlConstants.ATTRIBUTE_OVERWRITE));
            if (!overwrite) {
                throw new XmlParseException(DataXmlConstants.DATA_RESOLVER + " [" + name + "] is not unique!",
                        element, context);
            }
        }

        configuredDataResolvers.put(name, new NodeWrapper(node, context.getResource()));
        return null;
    }

}