/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. 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 https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/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 glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [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 javax.security.jacc;
/**
* This interface defines the methods that must be implemented by handlers
* that are to be registered and activated by the <code>PolicyContext</code>
* class. The <code>PolicyContext</code> class provides methods for containers
* to register and activate container-specific <code>PolicyContext</code>
* handlers. <code>Policy</code> providers use the <code>PolicyContext</code>
* class to activate handlers to obtain (from the container) additional policy
* relevant context to apply in their access decisions. All handlers
* registered and activated via the <code>PolicyContext</code> class must
* implement the <code>PolicyContextHandler</code> interface.
*
* @see javax.security.jacc.PolicyContext
* @see javax.security.jacc.PolicyContextException
*
* @author Ron Monzillo
* @author Gary Ellison
*/
public interface PolicyContextHandler {
/** This public method returns a boolean result indicating whether or
* not the handler supports the context object identified by the
* (case-sensitive) key value.
* @param key a <code>String</code> value identifying a context object
* that could be supported by the handler. The value of this parameter
* must not be null.
* @return a boolean indicating whether or not the context object
* corresponding to the argument key is handled by the handler.
*
* @throws javax.security.jacc.PolicyContextException
* if the implementation throws a checked exception that has not been
* accounted for by the method signature. The exception thrown
* by the implementation class will be encapsulated (during construction)
* in the thrown PolicyContextException
*/
public boolean supports(String key)
throws javax.security.jacc.PolicyContextException;
/** This public method returns the keys identifying the context objects
* supported by the handler. The value of each key supported by a handler
* must be a non-null <code>String</code> value.
* @return an array containing <code>String</code> values
* identifing the context objects supported by the handler. The array
* must not contain duplicate key values. In the
* unlikely case that the Handler supports no keys, the handler must
* return a zero length array. The value null must never be returned by
* this method.
*
* @throws javax.security.jacc.PolicyContextException
* if the implementation throws a checked exception that has not been
* accounted for by the method signature. The exception thrown
* by the implementation class will be encapsulated (during construction)
* in the thrown PolicyContextException
*/
public String[] getKeys()
throws javax.security.jacc.PolicyContextException;
/** This public method is used by the <code>PolicyContext</code> class to
* activate the handler and obtain from it the context object
* identified by the (case-sensitive) key. In addition to the key,
* the handler will be activated with the handler data value associated
* within the <code>PolicyContext</code> class
* with the thread on which the call to this method is made.
* <P>
* Note that the policy context identifier associated with a thread
* is available to the handler by calling PolicyContext.getContextID().
* <P>
* @param key a String that identifies the context object to be returned
* by the handler. The value of this paramter must not be null.
* @param data the handler data <code>Object</code> associated with the
* thread on which the call to this method has been made. Note that
* the value passed through this parameter may be <code>null</code>.
* @return The container and handler specific <code>Object</code>
* containing the desired context. A <code>null</code> value may
* be returned if the value of the corresponding context is null.
*
* @throws javax.security.jacc.PolicyContextException
* if the implementation throws a checked exception that has not been
* accounted for by the method signature. The exception thrown
* by the implementation class will be encapsulated (during construction)
* in the thrown PolicyContextException
*/
public Object getContext(String key, Object data)
throws javax.security.jacc.PolicyContextException;
}
|
