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/*
* 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.tuscany.sca.policy.util;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import javax.xml.namespace.QName;
import org.apache.tuscany.sca.assembly.Binding;
import org.apache.tuscany.sca.definitions.Definitions;
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;
/**
* A utility that helps to navigate the policy model
* @tuscany.spi.extension.asclient
*/
public class PolicyHelper {
public static PolicySet getPolicySet(PolicySubject subject, QName policySetName) {
for (PolicySet ps : subject.getPolicySets()) {
if (ps.getName().equals(policySetName)) {
return ps;
}
}
return null;
}
public static Intent getIntent(Definitions subject, QName intentName) {
for (Intent i : subject.getIntents()) {
if (i.getName().equals(intentName)) {
return i;
}
for (Intent qualifiedIntent : i.getQualifiedIntents()){
if (qualifiedIntent.getName().equals(intentName)) {
return qualifiedIntent;
}
}
}
return null;
}
public static PolicySet getPolicySet(Definitions subject, QName policySetName) {
for (PolicySet ps : subject.getPolicySets()) {
if (ps.getName().equals(policySetName)) {
return ps;
}
}
return null;
}
public static Intent getIntent(PolicySubject subject, QName intentName) {
for (Intent i : subject.getRequiredIntents()) {
if (i.getName().equals(intentName)) {
return i;
}
}
return null;
}
public static Collection<PolicyExpression> getPolicyExpressions(PolicySubject subject, QName policyName) {
Collection<PolicyExpression> policies = new ArrayList<PolicyExpression>();
for (PolicySet ps : subject.getPolicySets()) {
for (PolicyExpression exp : ps.getPolicies()) {
if (exp.getName().equals(policyName)) {
policies.add(exp);
}
}
}
return policies;
}
public static Collection<Object> getPolicies(PolicySubject subject, QName policyName) {
Collection<Object> policies = new ArrayList<Object>();
for (PolicySet ps : subject.getPolicySets()) {
for (PolicyExpression exp : ps.getPolicies()) {
if (exp.getName().equals(policyName)) {
policies.add(exp.getPolicy());
}
}
}
return policies;
}
public static boolean isIntentRequired(PolicySubject subject, QName intent) {
List<Intent> intents = ((PolicySubject)subject).getRequiredIntents();
for (Intent i : intents) {
if (intent.equals(i.getName())) {
return true;
}
}
return getPolicySet(subject, intent) != null;
}
}
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