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/*******************************************************************************
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Denise Smith - Initial implementation June 12, 2009
******************************************************************************/
package org.eclipse.persistence.internal.jaxb.many;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.eclipse.persistence.core.mappings.CoreAttributeAccessor;
import org.eclipse.persistence.exceptions.DescriptorException;
import org.eclipse.persistence.exceptions.XMLMarshalException;
import org.eclipse.persistence.internal.core.queries.CoreContainerPolicy;
import org.eclipse.persistence.internal.security.PrivilegedAccessHelper;
import org.eclipse.persistence.mappings.AttributeAccessor;
/**
* AttributeAccessor used in conjunction with an XMLCompositeDirectCollectionMapping
* or XMLCompositeCollectionMapping to enable support for mapping to Maps in JAXB
*/
public class MapValueAttributeAccessor extends AttributeAccessor {
private CoreAttributeAccessor nestedAccessor;
private String mapClassName;
private Class mapClass;
private CoreContainerPolicy containerPolicy;
private Class generatedEntryClass;
private ClassLoader classLoader;
public MapValueAttributeAccessor(CoreAttributeAccessor nestedAccessor, CoreContainerPolicy cp, Class generatedEntryClass, String mapClassName, ClassLoader classLoader) {
this.nestedAccessor = nestedAccessor;
this.mapClassName = mapClassName;
this.containerPolicy = cp;
this.generatedEntryClass = generatedEntryClass;
this.classLoader = classLoader;
}
public Object getAttributeValueFromObject(Object object)throws DescriptorException {
Object value = nestedAccessor.getAttributeValueFromObject(object);
if(null == value) {
return null;
}
Object results = containerPolicy.containerInstance(((Map)value).size());
Set entrySet = ((Map)value).entrySet();
if(null == entrySet) {
return results;
}
for(Entry entry : entrySet) {
MapEntry nextEntry;
try {
nextEntry = (MapEntry)generatedEntryClass.newInstance();
} catch (Exception e) {
return null;
}
nextEntry.setKey(entry.getKey());
nextEntry.setValue(entry.getValue());
containerPolicy.addInto(nextEntry, results, null);
}
return results;
}
public void setAttributeValueInObject(Object object, Object value) throws DescriptorException {
Map mapValue = null;;
try{
mapValue = (Map)mapClass.newInstance();
} catch (InstantiationException e) {
throw XMLMarshalException.unmarshalException(e);
} catch (IllegalAccessException e) {
throw XMLMarshalException.unmarshalException(e);
}
if(value != null) {
Object iterator = containerPolicy.iteratorFor(value);
while(containerPolicy.hasNext(iterator)){
Object next = containerPolicy.next(iterator, null);
Object nextKey = ((MapEntry)next).getKey();
Object nextValue = ((MapEntry)next).getValue();
mapValue.put(nextKey, nextValue);
}
}
nestedAccessor.setAttributeValueInObject(object, mapValue);
}
public void initializeAttributes(Class theJavaClass) throws DescriptorException {
nestedAccessor.initializeAttributes(theJavaClass);
if(mapClassName.equals("java.util.Map")){
mapClassName = "java.util.HashMap";
} else if(mapClassName.equals("java.util.concurrent.ConcurrentMap")){
mapClassName = "java.util.concurrent.ConcurrentHashMap";
} else if(mapClassName.equals("java.util.SortedMap")){
mapClassName = "java.util.TreeMap";
}
try{
mapClass =PrivilegedAccessHelper.getClassForName(mapClassName, true, classLoader);
}catch (ClassNotFoundException e){
throw XMLMarshalException.unmarshalException(e);
}
}
}