1 files changed, 124 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/notation/Mutation.java b/framework/src/onos/protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/notation/Mutation.java
new file mode 100644
index 00000000..5b5293c2
--- /dev/null
+++ b/framework/src/onos/protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/notation/Mutation.java
@@ -0,0 +1,124 @@
+/*
+ * 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.ovsdb.rfc.notation;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.Objects;
+
+import org.onosproject.ovsdb.rfc.notation.json.MutationSerializer;
+
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+/**
+ * Mutation is s 3-element JSON array of the form [column, mutator, value] that
+ * represents a change to a column value.
+ */
+@JsonSerialize(using = MutationSerializer.class)
+public final class Mutation {
+    /**
+     * Mutator must be "+=", "-=", "*=", "/=", or (integer only) "%=". The value
+     * of column is changed to the sum, difference, product, quotient, or
+     * remainder, respectively, of column and value.
+     */
+    public enum Mutator {
+        SUM("+="), DIFFERENCE("-="), PRODUCT("*="), QUOTIENT("/="),
+        REMAINDER("%="), INSERT("insert"), DELETE("delete");
+
+        private final String mutator;
+
+        private Mutator(String mutator) {
+            this.mutator = mutator;
+        }
+
+        /**
+         * Returns the mutator for Mutator.
+         * @return the mutator
+         */
+        public String mutator() {
+            return mutator;
+        }
+    }
+
+    private final String column;
+    private final Mutator mutator;
+    private final Object value;
+
+    /**
+     * Mutation constructor.
+     * @param column the column name
+     * @param mutator Mutator
+     * @param value column data
+     */
+    public Mutation(String column, Mutator mutator, Object value) {
+        checkNotNull(column, "column cannot be null");
+        checkNotNull(mutator, "mutator cannot be null");
+        checkNotNull(value, "value cannot be null");
+        this.column = column;
+        this.mutator = mutator;
+        this.value = value;
+    }
+
+    /**
+     * Returns column name.
+     * @return column name
+     */
+    public String getColumn() {
+        return column;
+    }
+
+    /**
+     * Returns Mutator.
+     * @return Mutator
+     */
+    public Mutator getMutator() {
+        return mutator;
+    }
+
+    /**
+     * Returns column data.
+     * @return column data
+     */
+    public Object getValue() {
+        return value;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(column, mutator, value);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof Mutation) {
+            final Mutation other = (Mutation) obj;
+            return Objects.equals(this.column, other.column)
+                    && Objects.equals(this.mutator, other.mutator)
+                    && Objects.equals(this.value, other.value);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this).add("column", column)
+                .add("mutator", mutator).add("value", value).toString();
+    }
+}