/*
* JBoss, Home of Professional Open Source.
* Copyright 2009, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.system.server.profileservice.persistence;
import java.lang.reflect.Proxy;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedSet;
import java.util.WeakHashMap;
import javax.management.ObjectName;
import org.jboss.beans.info.spi.BeanInfo;
import org.jboss.beans.info.spi.PropertyInfo;
import org.jboss.config.plugins.property.PropertyConfiguration;
import org.jboss.config.spi.Configuration;
import org.jboss.logging.Logger;
import org.jboss.managed.api.Fields;
import org.jboss.managed.api.ManagedObject;
import org.jboss.managed.api.ManagedProperty;
import org.jboss.managed.api.factory.ManagedObjectFactory;
import org.jboss.managed.plugins.factory.AbstractManagedObjectFactory;
import org.jboss.managed.spi.factory.InstanceClassFactory;
import org.jboss.metatype.api.types.CollectionMetaType;
import org.jboss.metatype.api.types.MetaType;
import org.jboss.metatype.api.values.CollectionValue;
import org.jboss.metatype.api.values.GenericValue;
import org.jboss.metatype.api.values.InstanceFactory;
import org.jboss.metatype.api.values.MetaValue;
import org.jboss.metatype.api.values.MetaValueFactory;
import org.jboss.metatype.plugins.values.ListInstanceFactory;
import org.jboss.metatype.plugins.values.SetInstanceFactory;
import org.jboss.metatype.plugins.values.SortedSetInstanceFactory;
import org.jboss.metatype.spi.values.MetaMapper;
import org.jboss.reflect.spi.ClassInfo;
/**
* The AttachmentPropertyPopulator, this writes the values of a
* ManagedProperty to the attachment using a registered ICF.
*
* @author <a href="mailto:emuckenh@redhat.com">Emanuel Muckenhuber</a>
* @version $Revision: 88716 $
*/
public class AttachmentPropertyPopulator
{
/** The logger. */
private static final Logger log = Logger.getLogger(AttachmentPropertyPopulator.class);
/** The meta value factory. */
private static final MetaValueFactory metaValueFactory = MetaValueFactory.getInstance();
/** The configuration */
private static final Configuration configuration;
/** The managed object factory. */
private final ManagedObjectFactory managedObjectFactory;
/** The helper. */
private final ManagedObjectRecreationHelper helper;
/** The instance factory builders */
private Map<Class<?>, InstanceFactory<?>> instanceFactoryMap = new WeakHashMap<Class<?>, InstanceFactory<?>>();
static
{
configuration = AccessController.doPrivileged(new PrivilegedAction<Configuration>()
{
public Configuration run()
{
return new PropertyConfiguration();
}
});
}
public <T> void setInstanceFactory(Class<T> clazz, InstanceFactory<T> factory)
{
synchronized(instanceFactoryMap)
{
if (factory == null)
instanceFactoryMap.remove(clazz);
else
instanceFactoryMap.put(clazz, factory);
}
}
public AttachmentPropertyPopulator(ManagedObjectFactory managedObjectFactory,
ManagedObjectRecreationHelper helper)
{
if(managedObjectFactory == null)
throw new IllegalArgumentException("null managed object factory.");
if(helper == null)
throw new IllegalArgumentException("null helper");
this.managedObjectFactory = managedObjectFactory;
this.helper = helper;
// set default collection instance factories
setInstanceFactory(List.class, ListInstanceFactory.INSTANCE);
setInstanceFactory(Set.class, SetInstanceFactory.INSTANCE);
setInstanceFactory(SortedSet.class, SortedSetInstanceFactory.INSTANCE);
}
/**
* Process a ManagedProperty.
*
* @param propertyElement the persisted xml meta data.
* @param name the property name.
* @param property the managed property.
* @param attachment the managed object attachment.
*/
public void processManagedProperty(String name, ManagedProperty property, Object attachment) throws Throwable
{
boolean trace = log.isTraceEnabled();
PropertyInfo propertyInfo = property.getField(Fields.PROPERTY_INFO, PropertyInfo.class);
// Skip not writable properties
if (propertyInfo == null || propertyInfo.isWritable() == false)
{
if (trace)
log.debug("Skipping not writable property " + propertyInfo);
return;
}
// Get the meta data information
MetaType metaType = property.getMetaType();
MetaValue value = property.getValue();
if(value != null)
metaType = value.getMetaType();
MetaMapper<?> mapper = property.getTransientAttachment(MetaMapper.class);
if (mapper == null)
{
if(metaType.isComposite())
{
// FIXME skip CompositeValueInvocationHandler
if(metaType.getTypeName().equals(ObjectName.class.getName()) == false)
{
// unwrap
Object unwrapped = metaValueFactory.unwrap(value, propertyInfo.getType());
if(unwrapped != null)
{
if (Proxy.isProxyClass(unwrapped.getClass()))
throw new IllegalStateException("cannot unwrap composite value for property " + property.getName()
+ " maybe missing @MetaMapping? " + metaType.getTypeName());
}
}
}
else if(metaType.isCollection())
{
CollectionMetaType collectionMetaType = (CollectionMetaType) metaType;
if(collectionMetaType.getElementType() == AbstractManagedObjectFactory.MANAGED_OBJECT_META_TYPE)
{
// FIXME
Collection<?> newCollection = unwrapGenericCollection((CollectionValue) value, propertyInfo);
propertyInfo.set(attachment, newCollection);
return;
}
}
}
// Set value
InstanceClassFactory icf = managedObjectFactory.getInstanceClassFactory(attachment.getClass(), null);
BeanInfo beanInfo = propertyInfo.getBeanInfo();
icf.setValue(beanInfo, property, attachment, value);
}
@SuppressWarnings("unchecked")
protected Collection<?> unwrapGenericCollection(CollectionValue collection, PropertyInfo propertyInfo) throws Throwable
{
// Create a new collection
BeanInfo beanInfo = configuration.getBeanInfo(propertyInfo.getType());
Collection newCollection = (Collection) createNewInstance(beanInfo);
// unwrap generic collection
for(MetaValue value : collection.getElements())
{
ManagedObject o = (ManagedObject) ((GenericValue)value).getValue();
newCollection.add(o.getAttachment());
}
return newCollection;
}
@SuppressWarnings("deprecation")
protected Object createNewInstance(BeanInfo beanInfo) throws Throwable
{
ClassInfo classInfo = beanInfo.getClassInfo();
if (classInfo.isInterface())
{
InstanceFactory<?> instanceFactory = instanceFactoryMap.get(classInfo.getType());
if (instanceFactory == null)
throw new IllegalArgumentException("Cannot instantiate interface BeanInfo, missing InstanceFactory: " + classInfo);
return instanceFactory.instantiate(beanInfo);
}
return beanInfo.newInstance();
}
}