/**
* 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;
import java.util.Collection;
import java.util.List;
import org.apache.neethi.Assertion;
import org.apache.neethi.Policy;
/**
* Used by the Policy engine to select the Policy alternative to use.
*
* By default, the Policy engine uses a "Minimal" policy alternative selector
* that finds the alternative with the smallest Collection of Assertions to
* assert.
*/
public interface AlternativeSelector {
/**
*
* @param policy The full policy to consider
* @param engine The policy engine calling the selector
* @param assertor Additional asserter (such as the transport) that may be
* able to handle some of the assertions
* @param request On the server out bound side, this will contain the alternatives
* from the request that were successfully met by the request. The
* selector should use these to help narrow down the alternative to
* use.
* @return
*/
Collection<Assertion> selectAlternative(Policy policy,
PolicyEngine engine,
Assertor assertor,
List<List<Assertion>> request);
}
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