com.xpandit.fusionplugin.pentaho.content.FusionContentGenerator.java Source code

Introduction

Here is the source code for com.xpandit.fusionplugin.pentaho.content.FusionContentGenerator.java

Source

package com.xpandit.fusionplugin.pentaho.content;

import java.io.OutputStream;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.platform.engine.services.solution.SimpleContentGenerator;

import com.xpandit.fusionplugin.PropertiesManager;
import com.xpandit.fusionplugin.pentaho.FusionComponent;
import com.xpandit.fusionplugin.pentaho.input.ParameterParser;
import com.xpandit.fusionplugin.util.LicenseChecker;
import com.xpandit.fusionplugin.util.VersionChecker;

/**
 * 
 * This is the Plugin content Generator. Class that based on the .xfusion file renders the chart as HTML or plain XML.
 * 
 * @author dduque
 * 
 */
public class FusionContentGenerator extends SimpleContentGenerator {

    private static final long serialVersionUID = 997953797244958291L;

    private static final String MIMETYPE = "text/html";

    // Request parser
    ParameterParser parameterParser = null;

    // Properties Manager
    PropertiesManager pm = null;

    public String getMimeType() {
        return MIMETYPE;
    }

    @Override
    public Log getLogger() {
        return LogFactory.getLog(FusionContentGenerator.class);
    }

    /**
     * Main method called by the Pentaho platform.
     */
    public void createContent(OutputStream out) throws Exception {

        // TODO code bellow is too tightly coupled. Parameter manager should have all the necessary methods.
        parameterParser = new ParameterParser(parameterProviders);

        // Identify operation based on URL call
        String method = parameterParser.extractMethod();

        FusionComponent fc = new FusionComponent(parameterParser);

        // Verify first if license has not expired
        if (LicenseChecker.verifyKey(out)) {
            if (method == null) { // Generate chart
                out.write(fc.renderChartGetData().getBytes());
            } else if ("dataStream".equals(method)) { // called by real time charts to update data
                out.write(fc.dataStream().getBytes());
            } else if ("checkVersions".equals(method)) { // check the Pentaho version
                out.write(VersionChecker.getVersions().getBytes());
            } else if ("renderChartExternalData".equals(method)) { // render chart using external data
                out.write(fc.renderChartGetData().getBytes());
            }
        }
    }

}