/*!
* 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.reporting.engine.classic.extensions.datasources.kettle.writer;
import java.io.IOException;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.ParameterMapping;
import org.pentaho.reporting.engine.classic.core.modules.parser.extwriter.DataFactoryWriteHandler;
import org.pentaho.reporting.engine.classic.core.modules.parser.extwriter.ReportWriterContext;
import org.pentaho.reporting.engine.classic.core.modules.parser.extwriter.ReportWriterException;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.AbstractKettleTransformationProducer;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.FormulaArgument;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.FormulaParameter;
import org.pentaho.reporting.libraries.xmlns.common.AttributeList;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriter;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.KettleDataFactory;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.KettleDataFactoryModule;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.KettleTransFromFileProducer;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.KettleTransFromRepositoryProducer;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.KettleTransformationProducer;
/**
* Creation-Date: Jan 19, 2007, 4:44:05 PM
*
* @author Thomas Morgner
*/
public class KettleDataFactoryWriteHandler implements DataFactoryWriteHandler
{
public KettleDataFactoryWriteHandler()
{
}
/**
* Writes a data-source into a XML-stream.
*
* @param reportWriter the writer context that holds all factories.
* @param xmlWriter the XML writer that will receive the generated XML data.
* @param dataFactory the data factory that should be written.
* @throws IOException if any error occured
* @throws ReportWriterException if the data factory cannot be written.
*/
public void write(final ReportWriterContext reportWriter,
final XmlWriter xmlWriter,
final DataFactory dataFactory)
throws IOException, ReportWriterException
{
final KettleDataFactory kettleDataFactory = (KettleDataFactory) dataFactory;
final AttributeList rootAttrs = new AttributeList();
rootAttrs.addNamespaceDeclaration("data", KettleDataFactoryModule.NAMESPACE);
xmlWriter.writeTag(KettleDataFactoryModule.NAMESPACE, "kettle-datasource", rootAttrs, XmlWriter.OPEN);
final String[] queryNames = kettleDataFactory.getQueryNames();
for (int i = 0; i < queryNames.length; i++)
{
final String queryName = queryNames[i];
final KettleTransformationProducer prod = kettleDataFactory.getQuery(queryName);
if (prod instanceof KettleTransFromFileProducer)
{
writeKettleFileProducer(xmlWriter, queryName, (KettleTransFromFileProducer) prod);
}
else if (prod instanceof KettleTransFromRepositoryProducer)
{
writeKettleRepositoryProducer(xmlWriter, queryName, (KettleTransFromRepositoryProducer) prod);
}
else
{
throw new ReportWriterException("Failed to write Kettle-Producer: Unknown implementation.");
}
}
xmlWriter.writeCloseTag();
}
private void writeKettleFileProducer(final XmlWriter xmlWriter,
final String queryName,
final KettleTransFromFileProducer fileProducer)
throws IOException
{
final AttributeList coreAttrs = new AttributeList();
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "name", queryName);
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "repository", fileProducer.getRepositoryName());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "filename", fileProducer.getTransformationFile());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "step", fileProducer.getStepName());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "username", fileProducer.getUsername());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "password", fileProducer.getPassword());
final FormulaArgument[] definedArgumentNames = fileProducer.getArguments();
final FormulaParameter[] parameterMappings = fileProducer.getParameter();
if (definedArgumentNames.length == 0 && parameterMappings.length == 0)
{
xmlWriter.writeTag(KettleDataFactoryModule.NAMESPACE, "query-file", coreAttrs, XmlWriter.CLOSE);
return;
}
xmlWriter.writeTag(KettleDataFactoryModule.NAMESPACE, "query-file", coreAttrs, XmlWriter.OPEN);
writeParameterAndArguments(xmlWriter, fileProducer);
xmlWriter.writeCloseTag();
}
private void writeParameterAndArguments(final XmlWriter xmlWriter,
final AbstractKettleTransformationProducer fileProducer) throws IOException
{
final FormulaArgument[] definedArgumentNames = fileProducer.getArguments();
final FormulaParameter[] parameterMappings = fileProducer.getParameter();
for (int i = 0; i < definedArgumentNames.length; i++)
{
final FormulaArgument arg = definedArgumentNames[i];
xmlWriter.writeTag(KettleDataFactoryModule.NAMESPACE, "argument", "formula", arg.getFormula(), XmlWriter.CLOSE);
}
for (int i = 0; i < parameterMappings.length; i++)
{
final FormulaParameter parameterMapping = parameterMappings[i];
final AttributeList paramAttr = new AttributeList();
paramAttr.setAttribute(KettleDataFactoryModule.NAMESPACE, "variable-name", parameterMapping.getName());
paramAttr.setAttribute(KettleDataFactoryModule.NAMESPACE, "formula", parameterMapping.getFormula());
xmlWriter.writeTag(KettleDataFactoryModule.NAMESPACE, "variable", paramAttr, XmlWriter.CLOSE);
}
}
private void writeKettleRepositoryProducer(final XmlWriter xmlWriter,
final String queryName,
final KettleTransFromRepositoryProducer repositoryProducer)
throws IOException
{
final AttributeList coreAttrs = new AttributeList();
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "name", queryName);
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "repository", repositoryProducer.getRepositoryName());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "directory", repositoryProducer.getDirectoryName());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "transformation", repositoryProducer.getTransformationName());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "step", repositoryProducer.getStepName());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "username", repositoryProducer.getUsername());
coreAttrs.setAttribute(KettleDataFactoryModule.NAMESPACE, "password", repositoryProducer.getPassword());
final String[] definedArgumentNames = repositoryProducer.getDefinedArgumentNames();
final ParameterMapping[] parameterMappings = repositoryProducer.getDefinedVariableNames();
if (definedArgumentNames.length == 0 && parameterMappings.length == 0)
{
xmlWriter.writeTag(KettleDataFactoryModule.NAMESPACE, "query-repository", coreAttrs, XmlWriter.CLOSE);
return;
}
writeParameterAndArguments(xmlWriter, repositoryProducer);
xmlWriter.writeCloseTag();
}
}