package org.pentaho.reporting.engine.classic.extensions.drilldown.parser;
import java.util.ArrayList;
import org.pentaho.reporting.engine.classic.extensions.drilldown.DrillDownProfile;
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.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Todo: Document me!
* <p/>
* Date: 23.02.2010
* Time: 14:05:12
*
* @author Thomas Morgner.
*/
public class DrillDownGroupReadHandler extends AbstractXmlReadHandler
{
private ArrayList<DrillDownProfileReadHandler> elements;
private String groupName;
private DrillDownProfile[] result;
public DrillDownGroupReadHandler()
{
elements = new ArrayList();
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void startParsing(final Attributes attrs) throws SAXException
{
super.startParsing(attrs);
groupName = attrs.getValue(getUri(), "name");
if (groupName == null)
{
throw new ParseException("Mandatory attribute 'name' is missing", getLocator());
}
}
/**
* 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
{
if (getUri().equals(uri) == false)
{
return null;
}
if ("drilldown-profile".equals(tagName))
{
final DrillDownProfileReadHandler readHandler = new DrillDownProfileReadHandler(groupName);
elements.add(readHandler);
return readHandler;
}
return null;
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
final DrillDownProfile[] result = new DrillDownProfile[elements.size()];
for (int i = 0; i < elements.size(); i++)
{
final DrillDownProfileReadHandler handler = elements.get(i);
result[i] = (DrillDownProfile) handler.getObject();
}
this.result = result;
}
/**
* 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 result;
}
}