com.sun.jersey.server.impl.inject.AbstractHttpContextInjectable Maven / Gradle / Ivy
The newest version!
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.jersey.server.impl.inject;
import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.spi.inject.Injectable;
import java.util.ArrayList;
import java.util.List;
/**
* An injectable that obtains an injectable value given the {@link HttpContext}.
*
* @param the type of the injectable value.
* @author [email protected]
*/
public abstract class AbstractHttpContextInjectable implements Injectable {
/**
* This implementation throws an {@link IllegalStateException}.
*
*/
@Override
public T getValue() {
throw new IllegalStateException();
}
/**
* Get the injectable value given the {@link HttpContext}.
*
* @param c the http context,
* @return the value.
*
*/
public abstract T getValue(HttpContext c);
/**
* Transform a list of {@link Injectable} into a list of this class.
*
* @param l the list of injectable.
* @return the list of this class.
*/
public static List transform(List l) {
List al = new ArrayList(l.size());
for (Injectable i : l) {
al.add(transform(i));
}
return al;
}
/**
* Transform a {@link Injectable} into an instance of this class.
*
* @param i the injectable.
* @return an instance of this class.
*/
public static AbstractHttpContextInjectable transform(final Injectable i) {
if (i == null) {
return null;
} else if (i instanceof AbstractHttpContextInjectable) {
return (AbstractHttpContextInjectable)i;
} else {
return new AbstractHttpContextInjectable() {
@Override
public Object getValue(HttpContext c) {
return i.getValue();
}
};
}
}
}