/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.beans.metadata.plugins;
import java.io.Serializable;
import java.util.Collections;
import java.util.Iterator;
import java.util.Stack;
import javax.xml.bind.annotation.XmlTransient;
import org.jboss.beans.metadata.spi.MetaDataVisitor;
import org.jboss.beans.metadata.spi.MetaDataVisitorNode;
import org.jboss.beans.metadata.spi.ValueMetaData;
import org.jboss.dependency.plugins.JMXObjectNameFix;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.tracker.ContextTracking;
import org.jboss.reflect.spi.TypeInfo;
import org.jboss.util.JBossObject;
import org.jboss.util.JBossStringBuilder;
import org.jboss.xb.annotations.JBossXmlNoElements;
/**
* Plain value.
*
* @author <a href="ales.justin@jboss.com">Ales Justin</a>
* @author <a href="adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 96740 $
*/
@JBossXmlNoElements
public class AbstractValueMetaData extends JBossObject implements ValueMetaData, TypeProvider, Serializable
{
private static final long serialVersionUID = 2L;
/**
* The value
*/
private Object value;
/**
* Create a new plain value
*/
public AbstractValueMetaData()
{
}
/**
* Create a new plain value
*
* @param value the value
*/
public AbstractValueMetaData(Object value)
{
setValue(value);
}
@XmlTransient
public Object getValue()
{
return value;
}
public void setValue(Object value)
{
Object jmxHack = null;
if (isUseJMXObjectNameFix())
jmxHack = JMXObjectNameFix.needsAnAlias(value);
if (jmxHack != null)
this.value = jmxHack;
else
this.value = value;
flushJBossObjectCache();
}
@XmlTransient
public Object getUnderlyingValue()
{
return value;
}
/**
* Do we use jmx object name fix.
*
* @return do we use jmx object name fix
*/
protected boolean isUseJMXObjectNameFix()
{
return true;
}
public Object getValue(TypeInfo info, ClassLoader cl) throws Throwable
{
return info != null ? info.convertValue(value) : value;
}
/**
* Get target.
* Try tracking.
*
* @param user the target's user
* @param used the target's owner
* @return target
*/
protected static Object getTarget(ControllerContext user, ControllerContext used)
{
if (used instanceof ContextTracking)
{
ContextTracking ct = ContextTracking.class.cast(used);
return ct.getTarget(user);
}
else
{
return used.getTarget();
}
}
public void initialVisit(MetaDataVisitor visitor)
{
visitor.initialVisit(this);
}
public void describeVisit(MetaDataVisitor visitor)
{
visitor.describeVisit(this);
}
public TypeInfo getType(MetaDataVisitor visitor, MetaDataVisitorNode previous) throws Throwable
{
Stack<MetaDataVisitorNode> visitorNodeStack = visitor.visitorNodeStack();
// see AbstractInjectionValueMetaData.describeVisit
MetaDataVisitorNode node = visitorNodeStack.pop();
try
{
if (node instanceof TypeProvider)
{
TypeProvider typeProvider = (TypeProvider) node;
return typeProvider.getType(visitor, this);
}
else
{
throw new IllegalArgumentException(TypeProvider.ERROR_MSG);
}
}
finally
{
visitorNodeStack.push(node);
}
}
public Object ungetValue(TypeInfo info, ClassLoader cl) throws Throwable
{
return null; // plain null
}
/**
* Unget target.
* Try tracking.
*
* @param user the target's user
* @param used the target's owner
* @return target
*/
protected static Object ungetTarget(ControllerContext user, ControllerContext used)
{
if (used instanceof ContextTracking)
{
ContextTracking ct = ContextTracking.class.cast(used);
ct.ungetTarget(user);
}
return null;
}
@XmlTransient
public Iterator<? extends MetaDataVisitorNode> getChildren()
{
if (value instanceof MetaDataVisitorNode)
return Collections.singletonList((MetaDataVisitorNode) value).iterator();
return null;
}
public void toString(JBossStringBuilder buffer)
{
buffer.append("value=").append(value);
}
public void toShortString(JBossStringBuilder buffer)
{
buffer.append(value);
}
public AbstractValueMetaData clone()
{
AbstractValueMetaData clone = (AbstractValueMetaData)super.clone();
if (value instanceof MetaDataVisitorNode)
clone.setValue(CloneUtil.cloneObject((MetaDataVisitorNode)value, MetaDataVisitorNode.class));
return clone;
}
}