org.pentaho.platform.plugin.outputs.ApacheVFSOutputHandler.java Source code

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Here is the source code for org.pentaho.platform.plugin.outputs.ApacheVFSOutputHandler.java

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/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.platform.plugin.outputs;

import org.apache.commons.vfs.FileContent;
import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystemManager;
import org.apache.commons.vfs.VFS;
import org.pentaho.platform.api.repository.IContentItem;
import org.pentaho.platform.engine.core.output.SimpleContentItem;
import org.pentaho.platform.engine.services.messages.Messages;
import org.pentaho.platform.engine.services.outputhandler.BaseOutputHandler;
import org.pentaho.platform.util.logging.Logger;

import java.io.OutputStream;

public class ApacheVFSOutputHandler extends BaseOutputHandler {

    @Override
    public IContentItem getFileOutputContentItem() {

        String contentRef = getContentRef();
        try {
            String contentName = getHandlerId().substring(4) + ":" + contentRef; //$NON-NLS-1$
            FileSystemManager fsManager = VFS.getManager();
            if (fsManager == null) {
                Logger.error(ApacheVFSOutputHandler.class.getName(),
                        Messages.getInstance().getString("ApacheVFSOutputHandler.ERROR_0001_CANNOT_GET_VFSMGR")); //$NON-NLS-1$
                return null;
            }
            FileObject file = fsManager.resolveFile(contentName);
            if (file == null) {
                Logger.error(ApacheVFSOutputHandler.class.getName(), Messages.getInstance()
                        .getString("ApacheVFSOutputHandler.ERROR_0002_CANNOT_GET_VF", contentName)); //$NON-NLS-1$
                return null;
            }
            if (!file.isWriteable()) {
                Logger.error(ApacheVFSOutputHandler.class.getName(), Messages.getInstance()
                        .getString("ApacheVFSOutputHandler.ERROR_0003_CANNOT_WRITE", contentName)); //$NON-NLS-1$
                return null;
            }
            FileContent fileContent = file.getContent();
            if (fileContent == null) {
                Logger.error(ApacheVFSOutputHandler.class.getName(), Messages.getInstance()
                        .getString("ApacheVFSOutputHandler.ERROR_0004_CANNOT_GET_CTX", contentName)); //$NON-NLS-1$
                return null;
            }
            OutputStream outputStream = fileContent.getOutputStream();

            SimpleContentItem content = new SimpleContentItem(outputStream);
            return content;
        } catch (Throwable t) {
            Logger.error(ApacheVFSOutputHandler.class.getName(), Messages.getInstance()
                    .getString("ApacheVFSOutputHandler.ERROR_0005_CANNOT_GET_HANDLER", contentRef), t); //$NON-NLS-1$
        }

        return null;
    }

}