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#set( $symbol_pound = '#' )
#set( $symbol_dollar = '$' )
#set( $symbol_escape = '\' )
/*
* 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 ${package}.util;
import java.util.ArrayList;
import java.util.List;
import javax.xml.namespace.QName;
import org.apache.tuscany.sca.policy.Intent;
import org.apache.tuscany.sca.policy.PolicyExpression;
import org.apache.tuscany.sca.policy.PolicySet;
import org.apache.tuscany.sca.policy.PolicySubject;
public class PolicyHelper {
/**
* Find a list of policy sets that provide the given intent
* @param subject
* @param providedIntent
* @return
*/
public static List<PolicySet> findPolicySets(PolicySubject subject, QName providedIntent) {
List<PolicySet> policies = new ArrayList<PolicySet>();
List<PolicySet> policySets = subject.getPolicySets();
for (PolicySet ps : policySets) {
for (Intent i : ps.getProvidedIntents()) {
if (i.getName().equals(providedIntent)) {
policies.add(ps);
}
}
}
return policies;
}
/**
* Find a list of policies of the given type
* @param <T>
* @param subject
* @param policyType
* @return
*/
public static <T> List<T> findPolicies(PolicySubject subject, QName providedIntent, Class<T> policyType) {
List<T> policies = new ArrayList<T>();
List<PolicySet> policySets = findPolicySets(subject, providedIntent);
for (PolicySet ps : policySets) {
for (PolicyExpression exp : ps.getPolicies()) {
if (policyType.isInstance(exp.getPolicy())) {
policies.add(policyType.cast(exp.getPolicy()));
}
}
}
return policies;
}
}
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