/*
* 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 Pentaho Corporation, . All rights reserved.
*/
package org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.datasets;
import org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.NamedStaticDataFactory;
import org.pentaho.reporting.libraries.base.util.LinkedMap;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.IgnoreAnyChildReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class StaticDataSetReadHandler extends AbstractXmlReadHandler
{
private String queryName;
private String className;
private String methodName;
private StaticDataSetParametersReadHandler parameters;
private NamedStaticDataFactory staticDataFactory;
public StaticDataSetReadHandler()
{
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws SAXException if there is a parsing error.
*/
protected void startParsing(final Attributes attrs) throws SAXException
{
queryName = attrs.getValue(getUri(), "queryName");
if (queryName == null)
{
throw new ParseException("Attribute 'queryName' must be given");
}
className = attrs.getValue(getUri(), "className");
if (className == null)
{
throw new ParseException("Attribute 'className' must be given");
}
methodName = attrs.getValue(getUri(), "methodName");
if (methodName == null)
{
throw new ParseException("Attribute 'methodName' must be given");
}
}
/**
* 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 SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild(final String uri, final String tagName, final Attributes atts) throws SAXException
{
if (isSameNamespace(uri) == false)
{
return null;
}
if ("padding".equals(tagName))
{
return new IgnoreAnyChildReadHandler();
}
if ("parameters".equals(tagName))
{
parameters = new StaticDataSetParametersReadHandler();
return parameters;
}
return null;
}
/**
* Done parsing.
*
* @throws SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
final LinkedMap map = (LinkedMap) parameters.getObject();
staticDataFactory = new NamedStaticDataFactory();
if (map.isEmpty())
{
staticDataFactory.setQuery(queryName, className + '#' + methodName);
}
else
{
String query = className + '#' + methodName + '(';
final Object[] objects = map.keys();
for (int i = 0; i < objects.length; i++)
{
if (i != 0)
{
query += ",";
}
query += String.valueOf(objects[i]);
}
staticDataFactory.setQuery(queryName, query);
}
}
/**
* Returns the object for this element or null, if this element does
* not create an object.
*
* @return the object.
* @throws SAXException if an parser error occured.
*/
public Object getObject() throws SAXException
{
return staticDataFactory;
}
}