org.da4.urlminimizer.XmlConfiguration.java Source code

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Here is the source code for org.da4.urlminimizer.XmlConfiguration.java

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/*******************************************************************************
 * Copyright 2016 Darren Blaber
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *******************************************************************************/
package org.da4.urlminimizer;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.da4.urlminimizer.exception.ConfigException;
import org.da4.urlminimizer.vo.ConfigVO;
import org.da4.urlminimizer.vo.PluginVO;
import org.jdom2.Attribute;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.input.SAXBuilder;

/**
 * XML implementation of configuration reader, using JDOM
 * @author dmb
 *
 */
public class XmlConfiguration implements IConfig {
    /*
     * (non-Javadoc)
     * 
     * @see org.da4.urlminimizer.IConfig#getConfig(java.lang.String)
     */
    @Override
    public ConfigVO getConfig(String filename) throws ConfigException {
        ConfigVO config = new ConfigVO();
        SAXBuilder builder = new SAXBuilder();
        Document doc = null;
        try {
            doc = builder.build(new File(filename));
        } catch (JDOMException e) {
            throw new ConfigException("Error Parsing Config File", e);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            throw new ConfigException("Error Reading Config File", e);
        }

        Element rootElement = doc.getRootElement();
        Attribute attribProdName = rootElement.getAttribute("productName");
        if (attribProdName == null || attribProdName.getValue() == null
                || attribProdName.getValue().trim().isEmpty())
            throw new ConfigException("No Product name,or issue with product name");

        Attribute attribRootUrl = rootElement.getAttribute("rootUrl");
        if (attribRootUrl == null || attribRootUrl.getValue() == null || attribRootUrl.getValue().trim().isEmpty())
            throw new ConfigException("No Root Url,or issue with URL");

        config.setProductName(attribProdName.getValue());
        config.setRootUrl(attribRootUrl.getValue());

        List<PluginVO> pluginVos = new ArrayList<PluginVO>();
        List<Element> xmlPluginList = rootElement.getChildren("plugin");
        for (Element xmlPlugin : xmlPluginList) {
            String hooksRaw = xmlPlugin.getAttributeValue("hook");
            List<Hook> hooks = new ArrayList<Hook>();
            if (!"".equalsIgnoreCase(hooksRaw.trim())) {
                String[] hooksSplit = hooksRaw.split(",");
                for (String hook : hooksSplit) {
                    hooks.add(Hook.get(hook));
                }
            }
            PluginVO pluginVo = new PluginVO(xmlPlugin.getAttributeValue("class"), hooks);
            Map<String, String> attribMap = new LinkedHashMap<String, String>();
            List<Element> xmlPluginAttribs = xmlPlugin.getChildren("attribute");
            for (Element xmlAttribute : xmlPluginAttribs) {

                attribMap.put(xmlAttribute.getAttributeValue("name"), xmlAttribute.getAttributeValue("value"));
            }
            pluginVo.setAttributes(attribMap);
            pluginVos.add(pluginVo);

        }
        config.setPluginConfigs(pluginVos);
        return config;
    }
}