Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* ====================================================================
* Project: openMDX, http://www.openmdx.org/
* Description: Component Environment
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2008, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.kernel.naming;
import java.util.HashMap;
import java.util.Map;
import javax.jdo.JDOFatalUserException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.openmdx.kernel.exception.BasicException;
import org.openmdx.kernel.loading.Factory;
/**
* Component Environment
*/
public class ComponentEnvironment {
/**
* Constructor
*/
private ComponentEnvironment() {
// Avoid instantiation
}
/**
* The factory registry
*/
private static Map, Factory> registry = new HashMap, Factory>();
/**
* Retrieve an object registered in the registry or the component's JNDI context
*
* @param name the objects JNDI name
*
* @return the object
* @throws BasicException
*
* @exception JDOFatalUserException if the object's acquisition fails
*/
public static T lookup(
Class objectClass
) throws BasicException{
Factory factory = registry.get(objectClass);
if(factory == null) {
final String jndiName = "java:comp/" + objectClass.getSimpleName();
try {
return objectClass.cast(new InitialContext().lookup(jndiName));
} catch (NamingException exception) {
throw BasicException.newStandAloneExceptionStack(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.BAD_RESOURCE,
"Unable to retrieve object from JNDI",
new BasicException.Parameter("class", objectClass.getName()),
new BasicException.Parameter("name", jndiName)
);
}
} else {
try {
return objectClass.cast(factory.instantiate());
} catch (RuntimeException exception) {
throw BasicException.newStandAloneExceptionStack(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.BAD_RESOURCE,
"Unable to retrieve object from registered factory",
new BasicException.Parameter("class", objectClass.getName()),
new BasicException.Parameter("factoryClass", factory.getClass().getName())
);
}
}
}
/**
* Register a component object
*
* @param factory a factory returning the registration Interface as instance class.
*/
public static synchronized void register (
Factory factory
){
registry.put(factory.getInstanceClass(), factory);
}
}
