From e5b7380c874745c989d1816b8f552504f038e1bc Mon Sep 17 00:00:00 2001
From: lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>
Date: Thu, 26 Sep 2013 20:33:20 +0000
Subject: 2.0 branch for possible maintenance release

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1526672 13f79535-47bb-0310-9956-ffa450edef68
---
 .../tuscany/sca/policy/util/PolicyHelper.java      | 117 +++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/policy/util/PolicyHelper.java

(limited to 'sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/policy/util/PolicyHelper.java')

diff --git a/sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/policy/util/PolicyHelper.java b/sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/policy/util/PolicyHelper.java
new file mode 100644
index 0000000000..d153e50149
--- /dev/null
+++ b/sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/policy/util/PolicyHelper.java
@@ -0,0 +1,117 @@
+/*
+ * 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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