package org.pentaho.reporting.engine.classic.extensions.drilldown.parser;
import java.util.ArrayList;
import java.util.HashMap;
import org.pentaho.reporting.engine.classic.extensions.drilldown.DrillDownProfile;
import org.pentaho.reporting.engine.classic.extensions.drilldown.LinkCustomizer;
import org.pentaho.reporting.engine.classic.extensions.drilldown.PatternLinkCustomizer;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.pentaho.reporting.libraries.xmlns.parser.PropertyReadHandler;
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: 14:05:47
*
* @author Thomas Morgner.
*/
public class DrillDownProfileReadHandler extends AbstractXmlReadHandler
{
private ArrayList<PropertyReadHandler> attributes;
private String bundleName;
private Class linkCustomizerType;
private String name;
private String prefix;
private boolean expert;
private boolean hidden;
private boolean preferred;
private boolean deprecated;
private String group;
public DrillDownProfileReadHandler(final String group)
{
this.group = group;
attributes = new ArrayList<PropertyReadHandler>();
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws SAXException if there is a parsing error.
*/
protected void startParsing(final Attributes attrs) throws SAXException
{
name = attrs.getValue(getUri(), "name"); // NON-NLS
if (name == null)
{
throw new ParseException("Attribute 'name' is undefined.", getLocator()); // NON-NLS
}
bundleName = attrs.getValue(getUri(), "bundle-name"); // NON-NLS
if (bundleName == null)
{
throw new ParseException("Attribute 'bundle-name' is undefined.", getLocator()); // NON-NLS
}
expert = "true".equals(attrs.getValue(getUri(), "expert")); // NON-NLS
hidden = "true".equals(attrs.getValue(getUri(), "hidden")); // NON-NLS
preferred = "true".equals(attrs.getValue(getUri(), "preferred")); // NON-NLS
deprecated = "true".equals(attrs.getValue(getUri(), "deprecated")); // NON-NLS
final String valueTypeText = attrs.getValue(getUri(), "class"); // NON-NLS
if (valueTypeText != null)
{
try
{
final ClassLoader loader = ObjectUtilities.getClassLoader(DrillDownProfileReadHandler.class);
linkCustomizerType = Class.forName(valueTypeText, false, loader);
if (LinkCustomizer.class.isAssignableFrom(linkCustomizerType) == false)
{
//noinspection ThrowCaughtLocally
throw new ParseException("Attribute 'class' is not valid", getLocator()); // NON-NLS
}
}
catch (ParseException pe)
{
throw pe;
}
catch (Exception e)
{
throw new ParseException("Attribute 'class' is not valid", e, getLocator()); // NON-NLS
}
}
else
{
linkCustomizerType = PatternLinkCustomizer.class;
}
prefix = "drilldown-profile."; // NON-NLS
}
/**
* 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 (isSameNamespace(uri) == false)
{
return null;
}
if ("attribute".equals(tagName)) // NON-NLS
{
final PropertyReadHandler propertyReadHandler = new PropertyReadHandler();
attributes.add(propertyReadHandler);
return propertyReadHandler;
}
return super.getHandlerForChild(uri, tagName, atts);
}
/**
* 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
{
final HashMap<String, String> attrMap = new HashMap<String, String>();
for (int i = 0; i < attributes.size(); i++)
{
final PropertyReadHandler readHandler = attributes.get(i);
attrMap.put(readHandler.getName(), readHandler.getResult());
}
attrMap.put("group", group); // NON-NLS
return new DrillDownProfile
(name, bundleName, prefix, expert, preferred, hidden, deprecated, linkCustomizerType, attrMap);
}
}