/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License, version 2 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/gpl-2.0.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 General Public License for more details.
*
*
* Copyright 2006 - 2013 Pentaho Corporation. All rights reserved.
*/
package org.pentaho.platform.engine.services.solution;
import org.pentaho.platform.api.repository.IContentItem;
import org.pentaho.platform.engine.services.messages.Messages;
import org.pentaho.platform.util.UUIDUtil;
import java.io.OutputStream;
import java.security.InvalidParameterException;
public abstract class SimpleContentGenerator extends BaseContentGenerator {
private static final long serialVersionUID = -8882315618256741737L;
@Override
public void createContent() throws Exception {
OutputStream out = null;
if ( outputHandler == null ) {
error( Messages.getInstance().getErrorString( "SimpleContentGenerator.ERROR_0001_NO_OUTPUT_HANDLER" ) ); //$NON-NLS-1$
throw new InvalidParameterException( Messages.getInstance().getString(
"SimpleContentGenerator.ERROR_0001_NO_OUTPUT_HANDLER" ) ); //$NON-NLS-1$
}
if ( instanceId == null ) {
setInstanceId( UUIDUtil.getUUIDAsString() );
}
IContentItem contentItem = outputHandler.getOutputContentItem( "response", "content", instanceId, getMimeType() ); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
if ( contentItem == null ) {
error( Messages.getInstance().getErrorString( "SimpleContentGenerator.ERROR_0002_NO_CONTENT_ITEM" ) ); //$NON-NLS-1$
throw new InvalidParameterException( Messages.getInstance().getString(
"SimpleContentGenerator.ERROR_0002_NO_CONTENT_ITEM" ) ); //$NON-NLS-1$
}
contentItem.setMimeType( getMimeType() );
out = contentItem.getOutputStream( itemName );
if ( out == null ) {
error( Messages.getInstance().getErrorString( "SimpleContentGenerator.ERROR_0003_NO_OUTPUT_STREAM" ) ); //$NON-NLS-1$
throw new InvalidParameterException( Messages.getInstance().getString(
"SimpleContentGenerator.ERROR_0003_NO_OUTPUT_STREAM" ) ); //$NON-NLS-1$
}
createContent( out );
try {
// we created the output stream, let's be sure it's closed
// do not leave it up to the implementations of SimpleContentGenerator
// do do this or not
out.flush();
out.close();
} catch ( Exception ignored ) {
// this is cleanup code anyway, the output stream was probably
// closed by the impl
}
}
public abstract void createContent( OutputStream out ) throws Exception;
public abstract String getMimeType();
}