/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.config.types;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.PostConstruct;
import javax.enterprise.context.spi.CreationalContext;
import javax.naming.NamingException;
import com.caucho.config.ConfigException;
import com.caucho.config.LineConfigException;
import com.caucho.config.inject.InjectManager;
import com.caucho.config.program.ConfigProgram;
import com.caucho.config.program.ResourceInjectionTargetProgram;
import com.caucho.config.program.ResourceProgram;
import com.caucho.naming.Jndi;
import com.caucho.naming.ObjectProxy;
import com.caucho.util.L10N;
/**
* Configuration for the resource group
*/
abstract public class ResourceGroupConfig extends ConfigProgram
implements ObjectProxy
{
private static final Logger log
= Logger.getLogger(ResourceGroupConfig.class.getName());
private static final L10N L = new L10N(ResourceGroupConfig.class);
private String _location = "";
private String _defaultInjectionClass;
private ArrayList<InjectionTarget> _injectionTargets
= new ArrayList<InjectionTarget>();
private String _lookupName;
private boolean _isProgram;
private ClassLoader _jndiClassLoader;
public ResourceGroupConfig()
{
}
public void setDefaultInjectionClass(String className)
{
_defaultInjectionClass = className;
}
public void setId(String id)
{
}
/**
* Sets the configuration location.
*/
public void setConfigLocation(String filename, int line)
{
_location = filename + ":" + line + " ";
}
/**
* Sets the description.
*/
public void setDescription(String description)
{
}
/**
* Adds an injection-target
*/
public void addInjectionTarget(InjectionTarget injectionTarget)
{
_injectionTargets.add(injectionTarget);
}
/**
* Sets the lookup-name
*/
public void setLookupName(String lookupName)
{
_lookupName = lookupName;
}
public String getLookupName()
{
return _lookupName;
}
public void setProgram(boolean isProgram)
{
_isProgram = isProgram;
}
public boolean isProgram()
{
return _isProgram;
}
public void setJndiClassLoader(ClassLoader loader)
{
_jndiClassLoader = loader;
}
public ClassLoader getJndiClassLoader()
{
return _jndiClassLoader;
}
/**
* Registers any injection targets
*/
@PostConstruct
public void init()
throws Exception
{
if (! isProgram())
deploy();
}
public void deploy()
{
Thread thread = Thread.currentThread();
ClassLoader loader = thread.getContextClassLoader();
InjectManager cdiManager = InjectManager.getCurrent();
for (InjectionTarget target : _injectionTargets) {
String targetClassName = target.getInjectionTargetClass();
String targetMethod = target.getInjectionTargetName();
try {
Class<?> targetClass = Class.forName(targetClassName, false, loader);
ResourceInjectionTargetProgram resourceProgram
= new ResourceInjectionTargetProgram(this,
targetClass,
targetMethod);
cdiManager.getResourceManager().addResource(resourceProgram);
if (getJndiClassLoader() != null)
thread.setContextClassLoader(getJndiClassLoader());
String jndiName = "java:comp/env/" + targetClassName + "/" + targetMethod;
Jndi.bindDeep(jndiName, this);
} catch (ConfigException e) {
throw e;
} catch (Exception e) {
throw new ConfigException(L.l("'{0}' is an unknown class in {1}",
targetClassName, this),
e);
} finally {
thread.setContextClassLoader(loader);
}
}
}
public ConfigProgram getProgram()
{
return new ResourceProgram(this);
}
public ConfigProgram getProgram(Class<?> cl)
{
throw new IllegalStateException();
}
protected Class<?> inferTypeFromInjection()
{
for (InjectionTarget target : _injectionTargets) {
try {
String className = target.getInjectionTargetClass();
String name = target.getInjectionTargetName();
ClassLoader loader = Thread.currentThread().getContextClassLoader();
Class<?> cl = Class.forName(className, false, loader);
Class<?> type = findProperty(cl, name);
if (type != null)
return type;
} catch (Exception e) {
log.log(Level.FINER, e.toString(), e);
}
}
return null;
}
private Class<?> findProperty(Class<?> cl, String name)
{
if (cl == null)
return null;
for (Field field : cl.getDeclaredFields()) {
if (name.equals(field.getName()))
return field.getType();
}
return null;
}
/**
* Configures the bean using the current program.
*
* @param bean the bean to configure
* @param env the Config environment
*/
public <T> void inject(T bean, CreationalContext<T> env)
{
}
@Override
public Object createObject(Hashtable<?,?> env)
throws NamingException
{
Object value = getValue();
return value;
}
public Object getValue()
{
return null;
}
protected ConfigException error(String msg)
{
if (_location != null)
return new LineConfigException(_location + msg);
else
return new ConfigException(msg);
}
public String toString()
{
return getClass().getSimpleName() + "[" + _location + "]";
}
}