| /* |
| * 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(); |
| } |
| } |