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

import com.sun.xml.internal.ws.policy.*;

import com.sun.xml.internal.ws.policy.spi.AssertionCreationException;

import com.sun.xml.internal.ws.policy.spi.PolicyAssertionCreator;

import java.util.Collection;

/**

 * Default implementation of a policy assertion creator. This implementation is used to create policy assertions in case

 * no domain specific policy assertion creator is registered for the namespace of the policy assertion.

 *

 * This is the only PolicyAssertionCreator implementation that is allowed to break general contract, claiming that

 * {@code getSupportedDomainNamespaceUri()} must not return empty String without causing PolicyAssertionCreator registration

 * fail.

 *

 * @author Marek Potociar (marek.potociar at sun.com)

 */

class DefaultPolicyAssertionCreator implements PolicyAssertionCreator {

    private static final class DefaultPolicyAssertion extends PolicyAssertion {

        DefaultPolicyAssertion(AssertionData data, Collection<PolicyAssertion> assertionParameters, AssertionSet nestedAlternative) {

            super (data, assertionParameters, nestedAlternative);

        }

    }

    /**

     * Creates a new instance of DefaultPolicyAssertionCreator

     */

    DefaultPolicyAssertionCreator() {

        // nothing to initialize

    }

    /**

     * See {@link PolicyAssertionCreator#getSupportedDomainNamespaceURIs() method documentation in interface}

     */

    public String[] getSupportedDomainNamespaceURIs() {

        return null;

    }

    /**

     * See {@link PolicyAssertionCreator#createAssertion(AssertionData, Collection, AssertionSet, PolicyAssertionCreator) method documentation in interface}

     */

    public PolicyAssertion createAssertion(final AssertionData data, final Collection<PolicyAssertion> assertionParameters, final AssertionSet nestedAlternative, final PolicyAssertionCreator defaultCreator) throws AssertionCreationException {

        return new DefaultPolicyAssertion(data, assertionParameters, nestedAlternative);

    }

}