1 files changed, 93 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/resource/link/LambdaResource.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/resource/link/LambdaResource.java
new file mode 100644
index 00000000..3733e467
--- /dev/null
+++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/resource/link/LambdaResource.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed 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.onosproject.net.resource.link;
+
+import org.onosproject.net.IndexedLambda;
+
+import java.util.Objects;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Representation of lambda resource.
+ */
+public final class LambdaResource implements LinkResource {
+
+    private final IndexedLambda lambda;
+
+    /**
+     * Creates a new instance with given lambda.
+     *
+     * @param lambda lambda to be assigned
+     */
+    private LambdaResource(IndexedLambda lambda) {
+        this.lambda = checkNotNull(lambda);
+    }
+
+    // Constructor for serialization
+    private LambdaResource() {
+        this.lambda = null;
+    }
+
+    /**
+     * Creates a new instance with the given index of lambda.
+     *
+     * @param lambda index value of lambda to be assigned
+     * @return {@link LambdaResource} instance with the given lambda
+     */
+    public static LambdaResource valueOf(int lambda) {
+        return valueOf(new IndexedLambda(lambda));
+    }
+
+    /**
+     * Creates a new instance with the given lambda.
+     *
+     * @param lambda lambda to be assigned
+     * @return {@link LambdaResource} instance with the given lambda
+     */
+    public static LambdaResource valueOf(IndexedLambda lambda) {
+        return new LambdaResource(lambda);
+    }
+
+    /**
+     * Returns lambda as an int value.
+     *
+     * @return lambda as an int value
+     */
+    public int toInt() {
+        return (int) lambda.index();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof LambdaResource) {
+            LambdaResource that = (LambdaResource) obj;
+            return Objects.equals(this.lambda, that.lambda);
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        return lambda.hashCode();
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(this.lambda);
+    }
+
+}