domain intent APIs

Change-Id: I4b2ac854da7808a880ef0a37b3b08ef51da812e5
diff --git a/core/api/src/main/java/org/onosproject/net/domain/DomainIntentOperation.java b/core/api/src/main/java/org/onosproject/net/domain/DomainIntentOperation.java
new file mode 100644
index 0000000..c26309c
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/domain/DomainIntentOperation.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2016-present 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.domain;
+
+import com.google.common.base.MoreObjects;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Representation of an intent operation on a network domain.
+ */
+public class DomainIntentOperation {
+
+    /**
+     * Type of domain intent operations.
+     * <p>
+     * TODO MODIFY to be added here.
+     */
+    public enum Type {
+        ADD,
+        REMOVE
+    }
+
+    private final DomainIntent intent;
+    private final Type type;
+
+    /**
+     * Creates a domain intent operation using the supplied information.
+     *
+     * @param intent the domain intent
+     * @param type the operation type
+     */
+    public DomainIntentOperation(DomainIntent intent, Type type) {
+        this.intent = checkNotNull(intent, "Intent cannot be null");
+        this.type = checkNotNull(type, "Operation type cannot be null");
+    }
+
+    /**
+     * Returns the type of operation.
+     *
+     * @return type
+     */
+    public Type type() {
+        return type;
+    }
+
+    /**
+     * Returns the domain intent.
+     *
+     * @return domain intent
+     */
+    public DomainIntent intent() {
+        return intent;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("intent", intent)
+                .add("type", type)
+                .toString();
+    }
+}