/*
* 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) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.wizard.parser;
import org.pentaho.reporting.engine.classic.core.wizard.DataAttributeReference;
import org.pentaho.reporting.engine.classic.core.wizard.DataAttributes;
import org.pentaho.reporting.engine.classic.core.wizard.DefaultDataAttributeReferences;
import org.pentaho.reporting.engine.classic.core.wizard.EmptyDataAttributes;
import org.pentaho.reporting.engine.classic.core.wizard.MetaSelector;
import org.pentaho.reporting.engine.classic.core.wizard.MetaSelectorRule;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import java.util.ArrayList;
public class MetaSelectorRuleReadHandler extends AbstractXmlReadHandler {
private ArrayList selectors;
private RuleMetaAttributesReadHandler attributesReadHandler;
private MetaSelectorRule rule;
private ArrayList mappings;
public MetaSelectorRuleReadHandler() {
this.selectors = new ArrayList();
this.mappings = new ArrayList();
}
/**
* 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 ) ) {
if ( "match".equals( tagName ) ) {
final MetaSelectorReadHandler readHandler = new MetaSelectorReadHandler();
selectors.add( readHandler );
return readHandler;
}
if ( "data-attributes".equals( tagName ) ) {
attributesReadHandler = new RuleMetaAttributesReadHandler();
return attributesReadHandler;
}
if ( "data-attribute-mapping".equals( tagName ) ) {
final DataAttributeMappingReadHandler readHandler = new DataAttributeMappingReadHandler();
mappings.add( readHandler );
return readHandler;
}
}
return null;
}
/**
* Done parsing.
*
* @throws SAXException
* if there is a parsing error.
*/
protected void doneParsing() throws SAXException {
final MetaSelector[] selectors = new MetaSelector[this.selectors.size()];
for ( int i = 0; i < this.selectors.size(); i++ ) {
final XmlReadHandler o = (XmlReadHandler) this.selectors.get( i );
selectors[i] = (MetaSelector) o.getObject();
}
final DataAttributes attributes;
if ( attributesReadHandler == null ) {
attributes = EmptyDataAttributes.INSTANCE;
} else {
attributes = (DataAttributes) attributesReadHandler.getObject();
}
final DefaultDataAttributeReferences references = new DefaultDataAttributeReferences();
for ( int i = 0; i < mappings.size(); i++ ) {
final DataAttributeMappingReadHandler handler = (DataAttributeMappingReadHandler) mappings.get( i );
references.setReference( handler.getTargetDomain(), handler.getTargetName(), (DataAttributeReference) handler
.getObject() );
}
rule = new MetaSelectorRule( selectors, attributes, references );
}
/**
* 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 rule;
}
}