aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.xml.internal.ws.policy;
aoqi@0: 
aoqi@0: import com.sun.xml.internal.ws.policy.privateutil.PolicyLogger;
aoqi@0: import com.sun.xml.internal.ws.policy.privateutil.PolicyUtils;
aoqi@0: import com.sun.xml.internal.ws.policy.spi.PolicyAssertionValidator;
aoqi@0: import static com.sun.xml.internal.ws.policy.privateutil.LocalizationMessages.WSP_0076_NO_SERVICE_PROVIDERS_FOUND;
aoqi@0: 
aoqi@0: import java.util.Collection;
aoqi@0: import java.util.LinkedList;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Provides methods for assertion validation.
aoqi@0:  *
aoqi@0:  * @author Marek Potociar (marek.potociar at sun.com)
aoqi@0:  * @author Fabian Ritzmann
aoqi@0:  */
aoqi@0: public class AssertionValidationProcessor {
aoqi@0:     private static final PolicyLogger LOGGER = PolicyLogger.getLogger(AssertionValidationProcessor.class);
aoqi@0: 
aoqi@0:     private final Collection<PolicyAssertionValidator> validators = new LinkedList<PolicyAssertionValidator>();
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * This constructor instantiates the object with a set of dynamically
aoqi@0:      * discovered PolicyAssertionValidators.
aoqi@0:      *
aoqi@0:      * @throws PolicyException Thrown if the set of dynamically discovered
aoqi@0:      *   PolicyAssertionValidators is empty.
aoqi@0:      */
aoqi@0:     private AssertionValidationProcessor() throws PolicyException {
aoqi@0:         this(null);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * This constructor adds the given set of policy validators to the dynamically
aoqi@0:      * discovered PolicyAssertionValidators.
aoqi@0:      *
aoqi@0:      * This constructor is intended to be used by the JAX-WS com.sun.xml.internal.ws.policy.api.ValidationProcessor.
aoqi@0:      *
aoqi@0:      * @param policyValidators A set of PolicyAssertionValidators. May be null
aoqi@0:      * @throws PolicyException Thrown if the set of given PolicyAssertionValidators
aoqi@0:      *   and dynamically discovered PolicyAssertionValidators is empty.
aoqi@0:      */
aoqi@0:     protected AssertionValidationProcessor(final Collection<PolicyAssertionValidator> policyValidators)
aoqi@0:             throws PolicyException {
aoqi@0:         for(PolicyAssertionValidator validator : PolicyUtils.ServiceProvider.load(PolicyAssertionValidator.class)) {
aoqi@0:             validators.add(validator);
aoqi@0:         }
aoqi@0:         if (policyValidators != null) {
aoqi@0:             for (PolicyAssertionValidator validator : policyValidators) {
aoqi@0:                 validators.add(validator);
aoqi@0:             }
aoqi@0:         }
aoqi@0:         if (validators.size() == 0) {
aoqi@0:             throw LOGGER.logSevereException(new PolicyException(WSP_0076_NO_SERVICE_PROVIDERS_FOUND(PolicyAssertionValidator.class.getName())));
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Factory method that returns singleton instance of the class.
aoqi@0:      *
aoqi@0:      * This method is only intended to be used by code that has no dependencies on
aoqi@0:      * JAX-WS. Otherwise use com.sun.xml.internal.ws.api.policy.ValidationProcessor.
aoqi@0:      *
aoqi@0:      * @return singleton An instance of the class.
aoqi@0:      * @throws PolicyException If instantiation failed.
aoqi@0:      */
aoqi@0:     public static AssertionValidationProcessor getInstance() throws PolicyException {
aoqi@0:         return new AssertionValidationProcessor();
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Validates fitness of the {@code assertion} on the client side.
aoqi@0:      *
aoqi@0:      * return client side {@code assertion} fitness
aoqi@0:      * @param assertion The assertion to be validated.
aoqi@0:      * @return The fitness of the assertion on the client side.
aoqi@0:      * @throws PolicyException If validation failed.
aoqi@0:      */
aoqi@0:     public PolicyAssertionValidator.Fitness validateClientSide(final PolicyAssertion assertion) throws PolicyException {
aoqi@0:         PolicyAssertionValidator.Fitness assertionFitness = PolicyAssertionValidator.Fitness.UNKNOWN;
aoqi@0:         for ( PolicyAssertionValidator validator : validators ) {
aoqi@0:             assertionFitness = assertionFitness.combine(validator.validateClientSide(assertion));
aoqi@0:             if (assertionFitness == PolicyAssertionValidator.Fitness.SUPPORTED) {
aoqi@0:                 break;
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         return assertionFitness;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Validates fitness of the {@code assertion} on the server side.
aoqi@0:      *
aoqi@0:      * return server side {@code assertion} fitness
aoqi@0:      * @param assertion The assertion to be validated.
aoqi@0:      * @return The fitness of the assertion on the server side.
aoqi@0:      * @throws PolicyException If validation failed.
aoqi@0:      */
aoqi@0:     public PolicyAssertionValidator.Fitness validateServerSide(final PolicyAssertion assertion) throws PolicyException {
aoqi@0:         PolicyAssertionValidator.Fitness assertionFitness = PolicyAssertionValidator.Fitness.UNKNOWN;
aoqi@0:         for (PolicyAssertionValidator validator : validators) {
aoqi@0:             assertionFitness = assertionFitness.combine(validator.validateServerSide(assertion));
aoqi@0:             if (assertionFitness == PolicyAssertionValidator.Fitness.SUPPORTED) {
aoqi@0:                 break;
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         return assertionFitness;
aoqi@0:     }
aoqi@0: }