/*
* JBoss, Home of Professional Open Source
* Copyright 2006, 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.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlTransient;
import javax.xml.bind.annotation.XmlType;
import org.jboss.beans.metadata.plugins.builder.MutableParameterizedMetaData;
import org.jboss.beans.metadata.spi.MetaDataVisitor;
import org.jboss.beans.metadata.spi.MetaDataVisitorNode;
import org.jboss.beans.metadata.spi.ParameterMetaData;
import org.jboss.dependency.plugins.AbstractDependencyItem;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.ControllerState;
import org.jboss.dependency.spi.DependencyItem;
import org.jboss.dependency.spi.dispatch.InvokeDispatchContext;
import org.jboss.kernel.Kernel;
import org.jboss.kernel.plugins.dispatch.InvokeDispatchHelper;
import org.jboss.kernel.spi.config.KernelConfigurator;
import org.jboss.kernel.spi.dependency.KernelController;
import org.jboss.kernel.spi.dependency.KernelControllerContext;
import org.jboss.reflect.spi.TypeInfo;
import org.jboss.util.JBossStringBuilder;
/**
* ValueFactory value.
*
* @author <a href="adrian@jboss.com">Adrian Brock</a>
* @author <a href="ales.justin@jboss.com">Ales Justin</a>
*/
@XmlType(name="valueFactoryType", propOrder = {"parameters"})
public class AbstractValueFactoryMetaData extends AbstractValueMetaData implements MutableParameterizedMetaData
{
private static final long serialVersionUID = 2L;
/**
* The context
*/
protected transient KernelControllerContext context;
/**
* The property name
*/
protected String method;
/**
* The parameter
*/
protected String parameter;
/**
* The defaultValue
*/
protected String defaultValue;
/**
* 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;
/** The parameters */
protected List<ParameterMetaData> parameters;
/**
* Create a new dependency value
*/
public AbstractValueFactoryMetaData()
{
}
/**
* Create a new dependency value
*
* @param value the value
*/
public AbstractValueFactoryMetaData(Object value)
{
super(value);
}
/**
* Create a new value-factory value
*
* @param value the value
* @param method the method
*/
public AbstractValueFactoryMetaData(Object value, String method)
{
this(value, method, null);
}
/**
* Create a new value-factory value
*
* @param value the value
* @param method the method
* @param defaultValue the default
*/
public AbstractValueFactoryMetaData(Object value, String method, String defaultValue)
{
super(value);
this.method = method;
this.defaultValue = defaultValue;
}
@XmlAttribute(name="bean", required = true)
public void setBean(String bean)
{
setValue(bean);
}
/**
* Get the method
*
* @return the method
*/
public String getMethod()
{
return method;
}
/**
* Set the property
*
* @param method the property name
*/
@XmlAttribute(required = true)
public void setMethod(String method)
{
this.method = method;
}
/**
* Get the parameter.
*
* @return the parameter
*/
public String getParameter()
{
return parameter;
}
/**
* Set the parameter.
*
* @param parameter the parameter
*/
@XmlAttribute
public void setParameter(String parameter)
{
this.parameter = parameter;
}
/**
* 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();
}
/**
* Get when required state.
*
* @return when required state
*/
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();
}
/**
* Get the dependant state.
*
* @return the dependant state
*/
public ControllerState getDependentState()
{
return dependentState;
}
/**
* Get the default value.
*
* @return the default value
*/
public String getDefaultValue()
{
return defaultValue;
}
/**
* Set the default value.
*
* @param defaultValue default value
*/
@XmlAttribute(name="default")
public void setDefaultValue(String defaultValue)
{
this.defaultValue = defaultValue;
}
/**
* Get the parameters.
*
* @return the parameters
*/
public List<ParameterMetaData> getParameters()
{
return parameters;
}
/**
* Set the parameters.
*
* @param parameters the parameters
*/
@XmlElement(name="parameter", type=AbstractParameterMetaData.class)
public void setParameters(List<ParameterMetaData> parameters)
{
this.parameters = parameters;
}
@Override
public void initialVisit(MetaDataVisitor visitor)
{
if (getUnderlyingValue() == null || getMethod() == null)
throw new IllegalArgumentException("Bean or method cannot null: " + this);
if (getParameter() != null && getParameters() != null)
throw new IllegalArgumentException("Both parameter and parameters cannot be set: " + this);
if (getParameter() != null)
{
List<ParameterMetaData> parameters = new ArrayList<ParameterMetaData>();
parameters.add(new AbstractParameterMetaData(String.class.getName(), getParameter()));
setParameters(parameters);
setParameter(null);
}
if (parameters != null)
{
for (int i = 0; i < parameters.size(); ++i)
parameters.get(i).setIndex(i);
}
context = visitor.getControllerContext();
Object name = context.getName();
Object iDependOn = getUnderlyingValue();
ControllerState whenRequired = whenRequiredState;
if (whenRequired == null)
{
whenRequired = visitor.getContextState();
}
ControllerState state = dependentState;
if (state == null)
{
state = ControllerState.INSTALLED;
}
DependencyItem item = new AbstractDependencyItem(name, iDependOn, whenRequired, state);
visitor.addDependency(item);
super.initialVisit(visitor);
}
@XmlTransient
public Iterator<? extends MetaDataVisitorNode> getChildren()
{
if (getParameters() != null)
return getParameters().iterator();
return null;
}
public Object getValue(TypeInfo info, ClassLoader cl) throws Throwable
{
ControllerState state = dependentState;
if (state == null)
state = ControllerState.INSTALLED;
KernelController controller = (KernelController)context.getController();
ControllerContext lookup = controller.getContext(getUnderlyingValue(), state);
if (lookup == null)
throw new Error("Should not be here - dependency failed - " + this);
if (lookup instanceof InvokeDispatchContext == false)
throw new IllegalArgumentException("Underlying context is not InvokeDispatchContext: " + context);
Kernel kernel = controller.getKernel();
KernelConfigurator configurator = kernel.getConfigurator();
Object result = InvokeDispatchHelper.invoke(
configurator,
lookup.getTarget(),
(InvokeDispatchContext)lookup,
getMethod(),
getParameters()
);
if (result == null)
result = defaultValue;
return info != null ? info.convertValue(result) : result;
}
public void toString(JBossStringBuilder buffer)
{
super.toString(buffer);
if (method != null)
buffer.append(" method=").append(method);
if (whenRequiredState != null)
buffer.append(" whenRequiredState=").append(whenRequiredState.getStateString());
if (dependentState != null)
buffer.append(" dependentState=").append(dependentState.getStateString());
if (defaultValue != null)
buffer.append(" default=").append(defaultValue);
if (parameters != null && parameters.isEmpty() == false)
buffer.append(" parameters=").append(parameters);
}
@SuppressWarnings("unchecked")
public AbstractValueFactoryMetaData clone()
{
AbstractValueFactoryMetaData clone = (AbstractValueFactoryMetaData)super.clone();
clone.setParameters(CloneUtil.cloneCollection(parameters, ArrayList.class, ParameterMetaData.class));
return clone;
}
}