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Apache CXF example source code file (PolicyComparator.java)

This example Apache CXF source code file (PolicyComparator.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Apache CXF tags/keywords

all, all, assertion, exactlyone, exactlyone, iterator, list, policy, policy, policyassertion, policycomparator, policycomponent, policycomponent, util

The Apache CXF PolicyComparator.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.cxf.ws.policy.util;

import java.util.Iterator;
import java.util.List;

import org.apache.cxf.ws.policy.PolicyAssertion;
import org.apache.neethi.All;
import org.apache.neethi.Assertion;
import org.apache.neethi.ExactlyOne;
import org.apache.neethi.Policy;
import org.apache.neethi.PolicyComponent;

public final class PolicyComparator {
    
    private PolicyComparator() {
    }
    
    /**
     * Returns <tt>true if the two policies have the same semantics
     * 
     * @param arg1 a Policy
     * @param arg2 another Policy
     * @return <tt>true iff both policies have the same semantics
     */
    public static boolean compare(Policy arg1, Policy arg2) {   
        boolean result = compare(arg1.getPolicyComponents(), arg2.getPolicyComponents());
        
        return result;
    }

    /**
     * Returns <tt>true if the two PolicyComponents have the same
     * semantics.
     * 
     * @param arg1 a PolicyComponent
     * @param arg2 another PolicyComponent
     * @return <tt>true iff both PolicyComponents have the same semantics
     */
    public static boolean compare(PolicyComponent arg1, PolicyComponent arg2) {
        
        // support parameterised assertion implementations
        /*
        if (!arg1.getClass().equals(arg2.getClass())) {
            return false;
        }
        */

        if (arg1 instanceof Policy) {
            return compare((Policy) arg1, (Policy) arg2);

        } else if (arg1 instanceof All) {
            return compare((All) arg1, (All) arg2);

        } else if (arg1 instanceof ExactlyOne) {
            return compare((ExactlyOne) arg1, (ExactlyOne) arg2);

        } else if (arg1 instanceof PolicyAssertion) {
            return compare((PolicyAssertion)arg1, (PolicyAssertion)arg2);

        } else {
            // TODO should I throw an exception ..
        }
        
        return false;
        
    }

    public static boolean compare(All arg1, All arg2) {
        return compare(arg1.getPolicyComponents(), arg2.getPolicyComponents());
    }

    public static boolean compare(ExactlyOne arg1, ExactlyOne arg2) {
        return compare(arg1.getPolicyComponents(), arg2.getPolicyComponents());
    }

    public static boolean compare(Assertion arg1, Assertion arg2) {
        // we have equal in the assertion interface so use it
        return arg1.equal(arg2);
        /*
        if (!(arg1.getName().equals(arg2.getName()))) {
            return false;
        }
        return true;
        */
    }

    private static boolean compare(List arg1, List arg2) {
        if (arg1.size() != arg2.size()) {
            return false;
        }

        Iterator iterator = arg1.iterator();
        PolicyComponent assertion1;

        while (iterator.hasNext()) {
            assertion1 = (PolicyComponent) iterator.next();

            Iterator iterator2 = arg2.iterator();
            boolean match = false;
            PolicyComponent assertion2;

            while (iterator2.hasNext()) {
                assertion2 = (PolicyComponent) iterator2.next();
                if (compare(assertion1, assertion2)) {
                    match = true;
                    break;
                }
            }

            if (!match) {
                return false;
            }
        }
        return true;
    }
}

Other Apache CXF examples (source code examples)

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