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package com.sun.xml.internal.ws.policy;

import com.sun.xml.internal.ws.policy.PolicyMap.ScopeType;
import com.sun.xml.internal.ws.policy.privateutil.LocalizationMessages;
import com.sun.xml.internal.ws.policy.privateutil.PolicyLogger;
import com.sun.xml.internal.ws.policy.subject.PolicyMapKeyConverter;
import com.sun.xml.internal.ws.policy.subject.WsdlBindingSubject;

import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map.Entry;
import javax.xml.namespace.QName;

Utility methods that operate on a PolicyMap.
Author:
Fabian Ritzmann/**
 * Utility methods that operate on a PolicyMap.
 *
 * @author Fabian Ritzmann
 */
public class PolicyMapUtil {

    private static final PolicyLogger LOGGER = PolicyLogger.getLogger(PolicyMapUtil.class);

    private static final PolicyMerger MERGER = PolicyMerger.getMerger();

    
Prevent instantiation.
/**
     * Prevent instantiation.
     */
    private PolicyMapUtil() {
    }

    
Throw an exception if the policy map contains any policy with at least two
policy alternatives.
Optional assertions are not considered (unless they have been normalized into
two policy alternatives).
Params:
map – policy map to be processed
Throws:
PolicyException – Thrown if the policy map contains at least one policy
with more than one policy alternative/**
     * Throw an exception if the policy map contains any policy with at least two
     * policy alternatives.
     *
     * Optional assertions are not considered (unless they have been normalized into
     * two policy alternatives).
     *
     * @param map policy map to be processed
     * @throws PolicyException Thrown if the policy map contains at least one policy
     * with more than one policy alternative
     */
    public static void rejectAlternatives(final PolicyMap map) throws PolicyException {
        for (Policy policy : map) {
            if (policy.getNumberOfAssertionSets() > 1) {
                throw LOGGER.logSevereException(new PolicyException(LocalizationMessages.WSP_0035_RECONFIGURE_ALTERNATIVES(policy.getIdOrName())));
            }
        }
    }

    
Inserts all PolicySubjects of type WsdlBindingSubject into the given policy map.
Params:
policyMap – The policy map
policySubjects – The policy subjects. The actual subject must have the
  type WsdlBindingSubject, otherwise it will not be processed.
serviceName – The name of the current WSDL service
portName – The name of the current WSDL port
Throws:
PolicyException – Thrown if the effective policy of a policy subject
  could not be computed/**
     * Inserts all PolicySubjects of type WsdlBindingSubject into the given policy map.
     *
     * @param policyMap The policy map
     * @param policySubjects The policy subjects. The actual subject must have the
     *   type WsdlBindingSubject, otherwise it will not be processed.
     * @param serviceName The name of the current WSDL service
     * @param portName The name of the current WSDL port
     * @throws PolicyException Thrown if the effective policy of a policy subject
     *   could not be computed
     */
    public static void insertPolicies(final PolicyMap policyMap, final Collection<PolicySubject> policySubjects, QName serviceName, QName portName)
            throws PolicyException {
        LOGGER.entering(policyMap, policySubjects, serviceName, portName);

        final HashMap<WsdlBindingSubject, Collection<Policy>> subjectToPolicies = new HashMap<WsdlBindingSubject, Collection<Policy>>();
        for (PolicySubject subject: policySubjects) {
            final Object actualSubject = subject.getSubject();
            if (actualSubject instanceof WsdlBindingSubject) {
                final WsdlBindingSubject wsdlSubject = (WsdlBindingSubject) actualSubject;
                final Collection<Policy> subjectPolicies = new LinkedList<Policy>();
                subjectPolicies.add(subject.getEffectivePolicy(MERGER));
                final Collection<Policy> existingPolicies = subjectToPolicies.put(wsdlSubject, subjectPolicies);
                if (existingPolicies != null) {
                    subjectPolicies.addAll(existingPolicies);
                }
            }
        }

        final PolicyMapKeyConverter converter = new PolicyMapKeyConverter(serviceName, portName);
        for (Entry<WsdlBindingSubject, Collection<Policy>> entry : subjectToPolicies.entrySet()) {
            WsdlBindingSubject wsdlSubject = entry.getKey();
            Collection<Policy> policySet = entry.getValue();
            final PolicySubject newSubject = new PolicySubject(wsdlSubject, policySet);
            PolicyMapKey mapKey = converter.getPolicyMapKey(wsdlSubject);

            if (wsdlSubject.isBindingSubject()) {
                policyMap.putSubject(ScopeType.ENDPOINT, mapKey, newSubject);
            } else if (wsdlSubject.isBindingOperationSubject()) {
                policyMap.putSubject(ScopeType.OPERATION, mapKey, newSubject);
            } else if (wsdlSubject.isBindingMessageSubject()) {
                switch (wsdlSubject.getMessageType()) {
                    case INPUT:
                        policyMap.putSubject(ScopeType.INPUT_MESSAGE, mapKey, newSubject);
                        break;
                    case OUTPUT:
                        policyMap.putSubject(ScopeType.OUTPUT_MESSAGE, mapKey, newSubject);
                        break;
                    case FAULT:
                        policyMap.putSubject(ScopeType.FAULT_MESSAGE, mapKey, newSubject);
                        break;
                    default:
                        break;
                }
            }
        }

        LOGGER.exiting();
    }

}