added predicates handy for finding vcloud references

labs/vcloud-director/src/main/java/org/jclouds/vcloud/director/v1_5/predicates/ReferenceTypePredicates.java

@@ -0,0 +1,85 @@
+/*
+ * Licensed to jclouds, Inc. (jclouds) under one or more
+ * contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  jclouds 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.jclouds.vcloud.director.v1_5.predicates;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import org.jclouds.vcloud.director.v1_5.domain.ReferenceType;
+
+import com.google.common.base.Predicate;
+
+/**
+ * Predicates handy when working with Reference Types
+ * 
+ * @author Adrian Cole
+ */
+
+public class ReferenceTypePredicates {
+
+   /**
+    * matches references of the given name
+    * 
+    * @param <T>
+    *           type of the ReferenceType, ex. {@link Link}
+    * @param name
+    *           ex. {@code context.getApi().getCurrentSession().getOrg()}
+    * @return predicate that will match references of the given name
+    */
+   public static <T extends ReferenceType<T>> Predicate<T> nameEquals(final String name) {
+      checkNotNull(name, "name must be defined");
+
+      return new Predicate<T>() {
+         @Override
+         public boolean apply(T reference) {
+            return name.equals(reference.getName());
+         }
+
+         @Override
+         public String toString() {
+            return "nameEquals(" + name + ")";
+         }
+      };
+   }
+
+   /**
+    * matches references of the given type
+    * 
+    * @param <T>
+    *           type of the ReferenceType, ex. {@link Link}
+    * @param type
+    *           ex. {@link VCloudDirectorMediaType#CATALOG}
+    * @return predicate that will match references of the given type
+    * @see VCloudDirectorMediaType
+    */
+   public static <T extends ReferenceType<T>> Predicate<T> typeEquals(final String type) {
+      checkNotNull(type, "type must be defined");
+
+      return new Predicate<T>() {
+         @Override
+         public boolean apply(T reference) {
+            return type.equals(reference.getType());
+         }
+
+         @Override
+         public String toString() {
+            return "typeEquals(" + type + ")";
+         }
+      };
+   }
+}

labs/vcloud-director/src/test/java/org/jclouds/vcloud/director/v1_5/predicates/ReferenceTypePredicatesTest.java

@@ -0,0 +1,56 @@
+/**
+ * Licensed to jclouds, Inc. (jclouds) under one or more
+ * contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  jclouds 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.jclouds.vcloud.director.v1_5.predicates;
+
+import java.net.URI;
+
+import org.jclouds.vcloud.director.v1_5.VCloudDirectorMediaType;
+import org.jclouds.vcloud.director.v1_5.domain.Reference;
+import org.jclouds.vcloud.director.v1_5.predicates.ReferenceTypePredicates;
+import org.testng.annotations.Test;
+
+/**
+ * 
+ * @author Adrian Cole
+ */
+@Test(groups = "unit", testName = "ReferenceTypePredicatesTest")
+public class ReferenceTypePredicatesTest {
+   Reference ref = Reference.builder().type("application/vnd.vmware.vcloud.catalogItem+xml").name("image").href(
+            URI.create("https://vcloudbeta.bluelock.com/api/catalogItem/67a469a1-aafe-4b5b-bb31-a6202ad8961f")).build();
+
+   @Test
+   public void testNameEqualsWhenEqual() {
+      assert ReferenceTypePredicates.<Reference> nameEquals("image").apply(ref);
+   }
+
+   @Test
+   public void testNameEqualsWhenNotEqual() {
+      assert !ReferenceTypePredicates.<Reference> nameEquals("foo").apply(ref);
+   }
+
+   @Test
+   public void testTypeEqualsWhenEqual() {
+      assert ReferenceTypePredicates.<Reference> typeEquals(VCloudDirectorMediaType.CATALOG_ITEM).apply(ref);
+   }
+
+   @Test
+   public void testTypeEqualsWhenNotEqual() {
+      assert !ReferenceTypePredicates.<Reference> typeEquals("foo").apply(ref);
+   }
+}