XMLResponse.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.rwesmarthome.internal.communicator.xmlresponse;

import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

/**
 * Base class to handle XML responses.
 *
 * @author michael
 *
 */
public class XMLResponse {

    /**
     * Returns an integer from an xml element.
     * 
     * @param ele
     * @param tagName
     * @return
     */
    protected int getIntValueFromElements(Element ele, String tagName) {
        return Integer.parseInt(getTextValueFromElements(ele, tagName));
    }

    /**
     * Returns an integer from an xml attribute.
     * 
     * @param ele
     * @param tagName
     * @return
     */
    protected int getIntValueFromAttribute(Element ele, String tagName) {
        return Integer.parseInt(getTextValueFromAttribute(ele, tagName));
    }

    /**
     * Returns a double value from an xml attribute.
     * 
     * @param ele
     * @param tagName
     * @return
     */
    protected double getDoubleValueFromAttribute(Element ele, String tagName) {
        return Double.parseDouble(getTextValueFromAttribute(ele, tagName));
    }

    /**
     * Returns a double value from an xml element.
     * 
     * @param ele
     * @param tagName
     * @return
     */
    protected double getDoubleValueFromElements(Element ele, String tagName) {
        return Double.parseDouble(getTextValueFromElements(ele, tagName));
    }

    /**
     * Returns a boolean value from an xml element.
     * 
     * @param ele
     * @param tagName
     * @return
     */
    protected boolean getBooleanValueFromElements(Element ele, String tagName) {
        return Boolean.parseBoolean(getTextValueFromElements(ele, tagName));
    }

    /**
     * Returns a boolean value from an xml attribute.
     * 
     * @param ele
     * @param tagName
     * @return
     */
    protected Boolean getBooleanValueFromAttribute(Element ele, String tagName) {
        String textVal = getTextValueFromAttribute(ele, tagName);
        return Boolean.parseBoolean(textVal);
    }

    /**
     * Returns a string from an xml element.
     * 
     * @param ele
     * @param tagName
     * @return
     */
    protected String getTextValueFromElements(Element ele, String tagName) {
        String textVal = null;
        NodeList nl = ele.getElementsByTagName(tagName);
        if (nl != null && nl.getLength() > 0) {
            Element el = (Element) nl.item(0);
            textVal = el.getFirstChild().getNodeValue();
        }
        return textVal;
    }

    /**
     * Returns a string from an xml attribute.
     * 
     * @param ele
     * @param tagName
     * @return
     */
    protected String getTextValueFromAttribute(Element ele, String tagName) {
        String textVal = ele.getAttribute(tagName);
        return textVal;
    }
}