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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package com.sun.xml.internal.ws.encoding.policy;

import com.sun.xml.internal.ws.api.client.SelectOptimalEncodingFeature;
import com.sun.xml.internal.ws.policy.AssertionSet;
import com.sun.xml.internal.ws.policy.Policy;
import com.sun.xml.internal.ws.policy.PolicyAssertion;
import com.sun.xml.internal.ws.policy.PolicyException;
import com.sun.xml.internal.ws.policy.PolicyMap;
import com.sun.xml.internal.ws.policy.PolicyMapKey;
import com.sun.xml.internal.ws.policy.jaxws.spi.PolicyFeatureConfigurator;

import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import javax.xml.namespace.QName;

import static com.sun.xml.internal.ws.encoding.policy.EncodingConstants.SELECT_OPTIMAL_ENCODING_ASSERTION;
import javax.xml.ws.WebServiceFeature;

/**
 * A configurator provider for FastInfoset policy assertions.
 *
 * @author Paul.Sandoz@Sun.Com
 * @author Fabian Ritzmann
 */
public class SelectOptimalEncodingFeatureConfigurator implements PolicyFeatureConfigurator {
    public static final QName enabled = new QName("enabled");

    /**
     * Process SelectOptimalEncoding policy assertions.
     *
     * @param key Key that identifies the endpoint scope.
     * @param policyMap The policy map.
     * @throws PolicyException If retrieving the policy triggered an exception.
     */
    public Collection<WebServiceFeature> getFeatures(PolicyMapKey key, PolicyMap policyMap) throws PolicyException {
        final Collection<WebServiceFeature> features = new LinkedList<WebServiceFeature>();
        if ((key != null) && (policyMap != null)) {
            Policy policy = policyMap.getEndpointEffectivePolicy(key);
            if (null!=policy && policy.contains(SELECT_OPTIMAL_ENCODING_ASSERTION)) {
                Iterator <AssertionSet> assertions = policy.iterator();
                while(assertions.hasNext()){
                    AssertionSet assertionSet = assertions.next();
                    Iterator<PolicyAssertion> policyAssertion = assertionSet.iterator();
                    while(policyAssertion.hasNext()){
                        PolicyAssertion assertion = policyAssertion.next();
                        if(SELECT_OPTIMAL_ENCODING_ASSERTION.equals(assertion.getName())){
                            String value = assertion.getAttributeValue(enabled);
                            boolean isSelectOptimalEncodingEnabled = value == null || Boolean.valueOf(value.trim());
                            features.add(new SelectOptimalEncodingFeature(isSelectOptimalEncodingEnabled));
                        }
                    }
                }
            }
        }
        return features;
    }
}
