Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright 2012 Subho Ghosh (subho dot ghosh at outlook dot com)
 * 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.
 */

import java.util.HashMap;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class Main {
    public static final String _PARAM_NODE_PARAMS_ = "./params/param";
    public static final String _PARAM_ATTR_NAME_ = "name";
    public static final String _PARAM_ATTR_VALUE_ = "value";

    /**
     * Extract the parameters specified in the XML document for the Element
     * specified by parent.
     * 
     * @param parent
     *            - Parent Node.
     * @return
     * @throws Exception
     */
    public static HashMap<String, Object> parseParams(Element parent) throws Exception {
        XPath xpath = XPathFactory.newInstance().newXPath();
        // XPath Query for showing all nodes value
        XPathExpression expr = xpath.compile(_PARAM_NODE_PARAMS_);

        NodeList nodes = (NodeList) expr.evaluate(parent, XPathConstants.NODESET);
        if (nodes != null && nodes.getLength() > 0) {
            HashMap<String, Object> params = new HashMap<String, Object>();
            for (int ii = 0; ii < nodes.getLength(); ii++) {
                Element elm = (Element) nodes.item(ii);
                String name = elm.getAttribute(_PARAM_ATTR_NAME_);
                String value = elm.getAttribute(_PARAM_ATTR_VALUE_);
                if (name != null && !name.isEmpty()) {
                    params.put(name, value);
                }
            }
            return params;
        }
        return null;
    }
}