/*
* 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) 2008 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.extensions.datasources.olap4j.parser;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.DataFactoryReadHandler;
import org.pentaho.reporting.engine.classic.extensions.datasources.olap4j.AbstractMDXDataFactory;
import org.pentaho.reporting.engine.classic.extensions.datasources.olap4j.connections.OlapConnectionProvider;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.StringReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public abstract class AbstractMDXDataSourceReadHandler extends AbstractXmlReadHandler
implements DataFactoryReadHandler
{
private AbstractMDXDataFactory dataFactory;
private OlapConnectionReadHandler connectionProviderReadHandler;
private StringReadHandler roleField;
private StringReadHandler jdbcUserField;
private StringReadHandler jdbcPasswordField;
public AbstractMDXDataSourceReadHandler()
{
}
public DataFactory getDataFactory()
{
return dataFactory;
}
/**
* Returns the handler for a child element.
*
* @param uri the URI of the namespace of the current element.
* @param tagName the tag name.
* @param atts the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild(final String uri,
final String tagName,
final Attributes atts) throws SAXException
{
final OlapConnectionReadHandlerFactory factory = OlapConnectionReadHandlerFactory.getInstance();
final XmlReadHandler handler = factory.getHandler(uri, tagName);
if (handler instanceof OlapConnectionReadHandler)
{
connectionProviderReadHandler = (OlapConnectionReadHandler) handler;
return connectionProviderReadHandler;
}
if (isSameNamespace(uri) == false)
{
return null;
}
if ("role-field".equals(tagName))
{
roleField = new StringReadHandler();
return roleField;
}
if ("jdbc-user-field".equals(tagName))
{
jdbcUserField = new StringReadHandler();
return jdbcUserField;
}
if ("jdbc-password-field".equals(tagName))
{
jdbcPasswordField = new StringReadHandler();
return jdbcPasswordField;
}
return null;
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
OlapConnectionProvider provider = null;
if (connectionProviderReadHandler != null)
{
provider = (OlapConnectionProvider) connectionProviderReadHandler.getObject();
}
if (provider == null)
{
provider = (OlapConnectionProvider) getRootHandler().getHelperObject("olap-connection-provider");
}
if (provider == null)
{
throw new SAXException(
"Unable to create OLAP4J Factory: No connection provider specified or recognized.");
}
dataFactory = createDataFactory(provider);
if (roleField != null)
{
dataFactory.setRoleField(roleField.getResult());
}
if (jdbcUserField != null)
{
dataFactory.setJdbcUserField(jdbcUserField.getResult());
}
if (jdbcPasswordField != null)
{
dataFactory.setJdbcPasswordField(jdbcPasswordField.getResult());
}
}
protected abstract AbstractMDXDataFactory createDataFactory(OlapConnectionProvider connectionProvider);
/**
* Returns the object for this element or null, if this element does not create an object.
*
* @return the object.
* @throws org.xml.sax.SAXException if an parser error occured.
*/
public Object getObject() throws SAXException
{
return dataFactory;
}
}