diff --git a/core/api/src/main/java/org/onosproject/net/flowobjective/FilteringObjective.java b/core/api/src/main/java/org/onosproject/net/flowobjective/FilteringObjective.java
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+++ b/core/api/src/main/java/org/onosproject/net/flowobjective/FilteringObjective.java
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+/*
+ * Copyright 2015 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.flowobjective;
+
+import org.onosproject.net.flow.criteria.Criterion;
+
+import java.util.Collection;
+
+/**
+ * Represents a filtering flow objective. Each filter is mapping
+ * from a criterion to a collection of criteria. The mapping will
+ * be used by a device driver to construct the actual flow rules to
+ * be installed on the device.
+ */
+public interface FilteringObjective extends Objective {
+
+    /**
+     * Represents filtering key used in this filter.
+     *
+     * @return a criterion
+     */
+    Criterion key();
+
+    /**
+     * The set of conditions the filter must provision at the device.
+     *
+     * @return a collection of criteria
+     */
+    Collection<Criterion> conditions();
+
+    /**
+     * Builder of Filtering objective entities.
+     */
+    public interface Builder extends Objective.Builder {
+
+        /**
+         * Add a filtering condition.
+         *
+         * @param criterion new criterion
+         * @return a filtering builder
+         */
+        public Builder addCondition(Criterion criterion);
+
+        /**
+         * Add a filtering key.
+         *
+         * @param criterion new criterion
+         * @return a filtering builder.
+         */
+        public Builder withKey(Criterion criterion);
+
+        /**
+         * Builds the filtering objective that will be added.
+         *
+         * @return a filtering objective
+         */
+        public FilteringObjective add();
+
+        /**
+         * Builds the filtering objective that will be removed.
+         *
+         * @return a filtering objective.
+         */
+        public FilteringObjective remove();
+
+
+    }
+
+}