/*
* 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 javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlAnyElement;
import org.jboss.beans.metadata.spi.MetaDataVisitor;
import org.jboss.beans.metadata.spi.ValueMetaData;
import org.jboss.dependency.plugins.AbstractDependencyItem;
import org.jboss.dependency.spi.Controller;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.ControllerState;
import org.jboss.dependency.spi.DependencyItem;
import org.jboss.dependency.spi.dispatch.AttributeDispatchContext;
import org.jboss.kernel.spi.dependency.KernelControllerContext;
import org.jboss.reflect.spi.TypeInfo;
import org.jboss.util.JBossStringBuilder;
import org.jboss.xb.annotations.JBossXmlAttribute;
import org.jboss.managed.api.annotation.ManagementProperty;
/**
* Dependency value.
*
* @author <a href="ales.justin@jboss.com">Ales Justin</a>
* @author <a href="adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 68636 $
*/
@XmlType
public class AbstractDependencyValueMetaData extends AbstractValueMetaData
{
private static final long serialVersionUID = 3L;
/**
* The context
*/
protected transient KernelControllerContext context;
/**
* The property name
*/
protected String property;
/**
* The when required state of the dependency or null to use current context state
*/
protected ControllerState whenRequiredState;
/**
* The required state of the dependency or null to look in the registry
*/
protected ControllerState dependentState = ControllerState.INSTALLED;
/**
* Create a new dependency value
*/
public AbstractDependencyValueMetaData()
{
}
/**
* Create a new dependency value
*
* @param value the value
*/
public AbstractDependencyValueMetaData(Object value)
{
super(value);
}
/**
* Create a new dependency value
*
* @param value the value
* @param property the property
*/
public AbstractDependencyValueMetaData(Object value, String property)
{
super(value);
this.property = property;
}
/**
* Get the property
*
* @return the property
*/
public String getProperty()
{
return property;
}
/**
* Set the property
*
* @param property the property name
*/
@XmlAttribute
public void setProperty(String property)
{
this.property = property;
}
/**
* Set the when required state of the dependency
*
* @param whenRequiredState the when required state or null if it uses current context state
*/
@XmlAttribute(name="whenRequired")
public void setWhenRequiredState(ControllerState whenRequiredState)
{
this.whenRequiredState = whenRequiredState;
flushJBossObjectCache();
}
public ControllerState getWhenRequiredState()
{
return whenRequiredState;
}
/**
* Set the required state of the dependency
*
* @param dependentState the required state or null if it must be in the registry
*/
@XmlAttribute(name="state")
public void setDependentState(ControllerState dependentState)
{
this.dependentState = dependentState;
flushJBossObjectCache();
}
public ControllerState getDependentState()
{
return dependentState;
}
@XmlAttribute(name="bean")
@JBossXmlAttribute(type=String.class)
public void setValue(Object value)
{
super.setValue(value);
}
@XmlAnyElement
@ManagementProperty(ignored = true)
public void setValueObject(Object value)
{
if (value == null)
setValue(null);
else if (value instanceof ValueMetaData)
setValue(value);
else
setValue(new AbstractValueMetaData(value));
}
protected boolean isLookupValid(ControllerContext lookup)
{
return (lookup != null);
}
public Object getValue(TypeInfo info, ClassLoader cl) throws Throwable
{
ControllerState state = dependentState;
if (state == null)
state = ControllerState.INSTALLED;
Controller controller = context.getController();
ControllerContext lookup = controller.getContext(getUnderlyingValue(), state);
if (isLookupValid(lookup) == false)
throw new Error("Should not be here - dependency failed - " + this);
if (lookup == null)
return null;
Object result = lookup.getTarget();
if (property != null)
{
if (lookup instanceof AttributeDispatchContext)
{
AttributeDispatchContext adc = (AttributeDispatchContext)lookup;
result = adc.get(property);
}
else
throw new IllegalArgumentException(
"Cannot use property attribute, context is not AttributeDispatchContext: " + lookup +
", metadata: " + this);
}
return info != null ? info.convertValue(result) : result;
}
protected boolean addDependencyItem()
{
return true;
}
public void initialVisit(MetaDataVisitor visitor)
{
context = visitor.getControllerContext();
// used for sub class optional handling
if (addDependencyItem())
{
Object name = context.getName();
Object iDependOn = getUnderlyingValue();
ControllerState whenRequired = whenRequiredState;
if (whenRequired == null)
{
whenRequired = visitor.getContextState();
}
DependencyItem item = new AbstractDependencyItem(name, iDependOn, whenRequired, dependentState);
visitor.addDependency(item);
}
super.initialVisit(visitor);
}
public void toString(JBossStringBuilder buffer)
{
super.toString(buffer);
if (property != null)
buffer.append(" property=").append(property);
if (whenRequiredState != null)
buffer.append(" whenRequiredState=").append(whenRequiredState.getStateString());
if (dependentState != null)
buffer.append(" dependentState=").append(dependentState.getStateString());
}
}