org.saiku.adhoc.service.SaikuAdhocContentGenerator.java Source code

Introduction

Here is the source code for org.saiku.adhoc.service.SaikuAdhocContentGenerator.java

Source

/*
 * Copyright (C) 2011 Marius Giepz
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * 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 GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

package org.saiku.adhoc.service;

import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.platform.api.engine.IParameterProvider;
import org.pentaho.platform.engine.services.solution.SimpleContentGenerator;
import org.saiku.adhoc.service.repository.FileExplorer;

/**
 * @author mgiepz
 *
 */
public class SaikuAdhocContentGenerator extends SimpleContentGenerator {

    private static final long serialVersionUID = -9180003935693305152L;
    private static final Log logger = LogFactory.getLog(SaikuAdhocContentGenerator.class);

    public String getMimeType() {
        return "text/html";
    }

    public Log getLogger() {
        return logger;
    }

    @Override
    public void createContent(OutputStream out) throws Exception {
        {

            final IParameterProvider pathParams = parameterProviders.get("path");
            final IParameterProvider requestParams = parameterProviders.get("request");

            try {

                final Class[] params = { IParameterProvider.class, OutputStream.class };

                final String method = pathParams.getStringParameter("path", null).split("/")[1].toLowerCase();

                try {
                    final Method mthd = this.getClass().getMethod(method, params);
                    mthd.invoke(this, requestParams, out);
                } catch (NoSuchMethodException e) {
                    logger.error("could not invoke " + method);
                } catch (InvocationTargetException e) {
                    //get to the cause and rethrow properly
                    Throwable target = e.getTargetException();
                    if (!e.equals(target)) {//just in case
                                            //get to the real cause
                        while (target != null && target instanceof InvocationTargetException) {
                            target = ((InvocationTargetException) target).getTargetException();
                        }
                    }
                    if (target instanceof Exception) {
                        throw (Exception) target;
                    } else {
                        throw new Exception(target);
                    }
                }
            } catch (Exception e) {
                final String message = e.getCause() != null
                        ? e.getCause().getClass().getName() + " - " + e.getCause().getMessage()
                        : e.getClass().getName() + " - " + e.getMessage();
                logger.error(message, e);
            }
        }
    }

    public void explorefolder(final IParameterProvider pathParams, final OutputStream out) {
        final String folder = pathParams.getStringParameter("dir", null);
        final String fileExtensions = pathParams.getStringParameter("fileExtensions", null);
        FileExplorer.getInstance().browse(folder, fileExtensions, userSession, out);
    }

}