/* ====================================================================
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==================================================================== */
package org.apache.poi.xssf.usermodel;
import java.lang.reflect.Constructor;
import org.apache.poi.POIXMLDocumentPart;
import org.apache.poi.POIXMLException;
import org.apache.poi.POIXMLFactory;
import org.apache.poi.POIXMLRelation;
import org.apache.poi.openxml4j.opc.PackagePart;
import org.apache.poi.openxml4j.opc.PackageRelationship;
import org.apache.poi.util.POILogFactory;
import org.apache.poi.util.POILogger;
/**
* Instantiates sub-classes of POIXMLDocumentPart depending on their relationship type
*
* @author Yegor Kozlov
*/
public final class XSSFFactory extends POIXMLFactory {
private static final POILogger logger = POILogFactory.getLogger(XSSFFactory.class);
private XSSFFactory(){
}
private static final XSSFFactory inst = new XSSFFactory();
public static XSSFFactory getInstance(){
return inst;
}
@Override
public POIXMLDocumentPart createDocumentPart(POIXMLDocumentPart parent, PackageRelationship rel, PackagePart part){
POIXMLRelation descriptor = XSSFRelation.getInstance(rel.getRelationshipType());
if(descriptor == null || descriptor.getRelationClass() == null){
logger.log(POILogger.DEBUG, "using default POIXMLDocumentPart for " + rel.getRelationshipType());
return new POIXMLDocumentPart(part, rel);
}
try {
Class<? extends POIXMLDocumentPart> cls = descriptor.getRelationClass();
Constructor<? extends POIXMLDocumentPart> constructor = cls.getDeclaredConstructor(PackagePart.class, PackageRelationship.class);
return constructor.newInstance(part, rel);
} catch (Exception e){
throw new POIXMLException(e);
}
}
@Override
public POIXMLDocumentPart newDocumentPart(POIXMLRelation descriptor){
try {
Class<? extends POIXMLDocumentPart> cls = descriptor.getRelationClass();
Constructor<? extends POIXMLDocumentPart> constructor = cls.getDeclaredConstructor();
return constructor.newInstance();
} catch (Exception e){
throw new POIXMLException(e);
}
}
}