lishuai | 91d986c | 2015-07-28 09:45:20 +0800 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2015-present Open Networking Foundation |
lishuai | 91d986c | 2015-07-28 09:45:20 +0800 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.ovsdb.rfc.notation; |
| 17 | |
| 18 | import static com.google.common.base.MoreObjects.toStringHelper; |
| 19 | import static com.google.common.base.Preconditions.checkNotNull; |
| 20 | |
| 21 | import java.util.Objects; |
| 22 | |
| 23 | import org.onosproject.ovsdb.rfc.notation.json.MutationSerializer; |
| 24 | |
| 25 | import com.fasterxml.jackson.databind.annotation.JsonSerialize; |
| 26 | |
| 27 | /** |
| 28 | * Mutation is s 3-element JSON array of the form [column, mutator, value] that |
| 29 | * represents a change to a column value. |
| 30 | */ |
| 31 | @JsonSerialize(using = MutationSerializer.class) |
| 32 | public final class Mutation { |
| 33 | /** |
| 34 | * Mutator must be "+=", "-=", "*=", "/=", or (integer only) "%=". The value |
| 35 | * of column is changed to the sum, difference, product, quotient, or |
| 36 | * remainder, respectively, of column and value. |
| 37 | */ |
| 38 | public enum Mutator { |
| 39 | SUM("+="), DIFFERENCE("-="), PRODUCT("*="), QUOTIENT("/="), |
| 40 | REMAINDER("%="), INSERT("insert"), DELETE("delete"); |
| 41 | |
| 42 | private final String mutator; |
| 43 | |
kdarapu | 71f623c | 2018-05-10 19:37:53 +0530 | [diff] [blame^] | 44 | Mutator(String mutator) { |
lishuai | 91d986c | 2015-07-28 09:45:20 +0800 | [diff] [blame] | 45 | this.mutator = mutator; |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Returns the mutator for Mutator. |
| 50 | * @return the mutator |
| 51 | */ |
| 52 | public String mutator() { |
| 53 | return mutator; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | private final String column; |
| 58 | private final Mutator mutator; |
| 59 | private final Object value; |
| 60 | |
| 61 | /** |
| 62 | * Mutation constructor. |
| 63 | * @param column the column name |
| 64 | * @param mutator Mutator |
| 65 | * @param value column data |
| 66 | */ |
| 67 | public Mutation(String column, Mutator mutator, Object value) { |
lishuai | 2f19743 | 2015-07-31 16:27:58 +0800 | [diff] [blame] | 68 | checkNotNull(column, "column cannot be null"); |
| 69 | checkNotNull(mutator, "mutator cannot be null"); |
| 70 | checkNotNull(value, "value cannot be null"); |
lishuai | 91d986c | 2015-07-28 09:45:20 +0800 | [diff] [blame] | 71 | this.column = column; |
| 72 | this.mutator = mutator; |
| 73 | this.value = value; |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * Returns column name. |
| 78 | * @return column name |
| 79 | */ |
| 80 | public String getColumn() { |
| 81 | return column; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Returns Mutator. |
| 86 | * @return Mutator |
| 87 | */ |
| 88 | public Mutator getMutator() { |
| 89 | return mutator; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Returns column data. |
| 94 | * @return column data |
| 95 | */ |
| 96 | public Object getValue() { |
| 97 | return value; |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public int hashCode() { |
| 102 | return Objects.hash(column, mutator, value); |
| 103 | } |
| 104 | |
| 105 | @Override |
| 106 | public boolean equals(Object obj) { |
| 107 | if (this == obj) { |
| 108 | return true; |
| 109 | } |
| 110 | if (obj instanceof Mutation) { |
| 111 | final Mutation other = (Mutation) obj; |
| 112 | return Objects.equals(this.column, other.column) |
| 113 | && Objects.equals(this.mutator, other.mutator) |
| 114 | && Objects.equals(this.value, other.value); |
| 115 | } |
| 116 | return false; |
| 117 | } |
| 118 | |
| 119 | @Override |
| 120 | public String toString() { |
| 121 | return toStringHelper(this).add("column", column) |
| 122 | .add("mutator", mutator).add("value", value).toString(); |
| 123 | } |
| 124 | } |