it.eng.spagobi.studio.extchart.configuration.ExtChartConfigurations.java Source code

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Here is the source code for it.eng.spagobi.studio.extchart.configuration.ExtChartConfigurations.java

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/**
 SpagoBI, the Open Source Business Intelligence suite
    
 Copyright (C) 2012 Engineering Ingegneria Informatica S.p.A. - SpagoBI Competency Center
 This Source Code Form is subject to the terms of the Mozilla Public
 License, v. 2.0. If a copy of the MPL was not distributed with this file,
 You can obtain one at http://mozilla.org/MPL/2.0/.
     
**/
package it.eng.spagobi.studio.extchart.configuration;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;
import org.eclipse.core.runtime.Platform;
import org.osgi.framework.Bundle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ExtChartConfigurations {

    public static final String INFO_FILE = "it/eng/spagobi/studio/extchart/configuration/extcharts.xml";

    private static Logger logger = LoggerFactory.getLogger(ExtChartConfigurations.class);

    public static List getConfiguredChartTypes() throws Exception {
        List toReturn = null;
        try {
            InputStream is = getInputStreamFromResource(INFO_FILE);
            Document document = new SAXReader().read(is);
            List charts = document.selectNodes("//EXTCHARTS/EXTCHART");
            if (charts == null || charts.size() == 0)
                return null;
            toReturn = new ArrayList();
            for (int i = 0; i < charts.size(); i++) {
                Node chart = (Node) charts.get(i);
                String type = chart.valueOf("@type");
                if (type == null || type.trim().equals(""))
                    continue;
                toReturn.add(type);
            }
        } catch (Exception e) {
            logger.error("Error in reading configuration types from file " + INFO_FILE);
        }
        return toReturn;
    }

    /** Get input stream from a resource
     * 
     * @param resourcePath
     * @return
     * @throws IOException
     */

    public static InputStream getInputStreamFromResource(String resourcePath) throws IOException {
        Bundle b = Platform.getBundle(it.eng.spagobi.studio.extchart.Activator.PLUGIN_ID);
        URL res = b.getResource(resourcePath);
        InputStream is = res.openStream();
        return is;
    }

}