Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 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.store.resource.impl; |
| 17 | |
| 18 | import com.google.common.base.MoreObjects; |
| 19 | import com.google.common.collect.Sets; |
| 20 | import org.onosproject.net.resource.DiscreteResource; |
| 21 | import org.onosproject.net.resource.DiscreteResourceId; |
| 22 | import org.onosproject.net.resource.Resources; |
| 23 | |
| 24 | import java.util.LinkedHashSet; |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 25 | import java.util.Objects; |
| 26 | import java.util.Optional; |
| 27 | import java.util.Set; |
| 28 | |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 29 | final class GenericDiscreteResources implements DiscreteResources { |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 30 | private final Set<DiscreteResource> values; |
| 31 | |
Sho SHIMIZU | 65de961 | 2016-05-19 12:24:20 -0700 | [diff] [blame] | 32 | static DiscreteResources of(Set<DiscreteResource> resources) { |
| 33 | if (resources.isEmpty()) { |
| 34 | return DiscreteResources.empty(); |
| 35 | } |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 36 | |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 37 | return new GenericDiscreteResources(resources); |
Sho SHIMIZU | 02e6e20 | 2016-05-18 10:47:47 -0700 | [diff] [blame] | 38 | } |
| 39 | |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 40 | private GenericDiscreteResources(Set<DiscreteResource> values) { |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 41 | this.values = values; |
| 42 | } |
| 43 | |
Sho SHIMIZU | 65de961 | 2016-05-19 12:24:20 -0700 | [diff] [blame] | 44 | // for serializer |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 45 | private GenericDiscreteResources() { |
Sho SHIMIZU | 65de961 | 2016-05-19 12:24:20 -0700 | [diff] [blame] | 46 | this.values = null; |
| 47 | } |
| 48 | |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 49 | @Override |
| 50 | public Optional<DiscreteResource> lookup(DiscreteResourceId id) { |
| 51 | DiscreteResource resource = Resources.discrete(id).resource(); |
| 52 | if (values.contains(resource)) { |
| 53 | return Optional.of(resource); |
| 54 | } else { |
| 55 | return Optional.empty(); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | @Override |
| 60 | public DiscreteResources difference(DiscreteResources other) { |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 61 | return new GenericDiscreteResources(Sets.difference(this.values, other.values())); |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | @Override |
| 65 | public boolean isEmpty() { |
| 66 | return values.isEmpty(); |
| 67 | } |
| 68 | |
| 69 | @Override |
Sho SHIMIZU | 34847b7 | 2016-06-07 14:31:54 -0700 | [diff] [blame^] | 70 | public boolean containsAny(Set<DiscreteResource> other) { |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 71 | return other.stream().anyMatch(values::contains); |
| 72 | } |
| 73 | |
| 74 | // returns a new instance, not mutate the current instance |
| 75 | @Override |
| 76 | public DiscreteResources add(DiscreteResources other) { |
| 77 | Set<DiscreteResource> newValues = new LinkedHashSet<>(this.values); |
| 78 | newValues.addAll(other.values()); |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 79 | return new GenericDiscreteResources(newValues); |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | // returns a new instance, not mutate the current instance |
| 83 | @Override |
Sho SHIMIZU | 34847b7 | 2016-06-07 14:31:54 -0700 | [diff] [blame^] | 84 | public DiscreteResources remove(Set<DiscreteResource> removed) { |
| 85 | return of(Sets.difference(this.values, removed)); |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 86 | } |
| 87 | |
| 88 | @Override |
| 89 | public Set<DiscreteResource> values() { |
| 90 | // breaks immutability, but intentionally returns the field |
| 91 | // because this class is transient |
| 92 | return values; |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public int hashCode() { |
| 97 | return Objects.hash(values); |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public boolean equals(Object obj) { |
| 102 | if (this == obj) { |
| 103 | return true; |
| 104 | } |
| 105 | if (obj == null || getClass() != obj.getClass()) { |
| 106 | return false; |
| 107 | } |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 108 | final GenericDiscreteResources other = (GenericDiscreteResources) obj; |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 109 | return Objects.equals(this.values, other.values); |
| 110 | } |
| 111 | |
| 112 | @Override |
| 113 | public String toString() { |
| 114 | return MoreObjects.toStringHelper(this) |
| 115 | .add("values", values) |
| 116 | .toString(); |
| 117 | } |
| 118 | } |