Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [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.store.resource.impl; |
| 17 | |
| 18 | import com.google.common.base.MoreObjects; |
| 19 | import com.google.common.collect.Sets; |
Madan Jampani | 37fa33c | 2016-06-15 16:25:23 -0700 | [diff] [blame] | 20 | |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 21 | import org.onosproject.net.resource.DiscreteResource; |
| 22 | import org.onosproject.net.resource.DiscreteResourceId; |
| 23 | import org.onosproject.net.resource.Resources; |
| 24 | |
| 25 | import java.util.LinkedHashSet; |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 26 | import java.util.Objects; |
| 27 | import java.util.Optional; |
| 28 | import java.util.Set; |
Sho SHIMIZU | 9cc4a24 | 2016-05-26 12:55:35 -0700 | [diff] [blame] | 29 | import java.util.stream.Collectors; |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 30 | |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 31 | final class GenericDiscreteResources implements DiscreteResources { |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 32 | private final Set<DiscreteResource> values; |
| 33 | |
Sho SHIMIZU | 65de961 | 2016-05-19 12:24:20 -0700 | [diff] [blame] | 34 | static DiscreteResources of(Set<DiscreteResource> resources) { |
| 35 | if (resources.isEmpty()) { |
| 36 | return DiscreteResources.empty(); |
| 37 | } |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 38 | |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 39 | return new GenericDiscreteResources(resources); |
Sho SHIMIZU | 02e6e20 | 2016-05-18 10:47:47 -0700 | [diff] [blame] | 40 | } |
| 41 | |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 42 | private GenericDiscreteResources(Set<DiscreteResource> values) { |
Sho SHIMIZU | 4920d05 | 2016-06-16 14:26:35 -0700 | [diff] [blame] | 43 | this.values = values; |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 44 | } |
| 45 | |
Sho SHIMIZU | 65de961 | 2016-05-19 12:24:20 -0700 | [diff] [blame] | 46 | // for serializer |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 47 | private GenericDiscreteResources() { |
Sho SHIMIZU | 65de961 | 2016-05-19 12:24:20 -0700 | [diff] [blame] | 48 | this.values = null; |
| 49 | } |
| 50 | |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 51 | @Override |
| 52 | public Optional<DiscreteResource> lookup(DiscreteResourceId id) { |
| 53 | DiscreteResource resource = Resources.discrete(id).resource(); |
| 54 | if (values.contains(resource)) { |
| 55 | return Optional.of(resource); |
| 56 | } else { |
| 57 | return Optional.empty(); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public DiscreteResources difference(DiscreteResources other) { |
Sho SHIMIZU | ecb7898 | 2016-06-07 16:10:46 -0700 | [diff] [blame] | 63 | if (other instanceof GenericDiscreteResources) { |
Sho SHIMIZU | 4920d05 | 2016-06-16 14:26:35 -0700 | [diff] [blame] | 64 | // make sure that the set is serializable |
| 65 | return of(new LinkedHashSet<>(Sets.difference(this.values(), other.values()))); |
Sho SHIMIZU | ecb7898 | 2016-06-07 16:10:46 -0700 | [diff] [blame] | 66 | } else if (other instanceof EmptyDiscreteResources) { |
| 67 | return this; |
| 68 | } |
| 69 | |
| 70 | return DiscreteResources.of(Sets.difference(this.values(), other.values())); |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public boolean isEmpty() { |
| 75 | return values.isEmpty(); |
| 76 | } |
| 77 | |
| 78 | @Override |
Sho SHIMIZU | 34847b7 | 2016-06-07 14:31:54 -0700 | [diff] [blame] | 79 | public boolean containsAny(Set<DiscreteResource> other) { |
Sho SHIMIZU | e3718a8 | 2016-06-07 15:29:31 -0700 | [diff] [blame] | 80 | return !Sets.intersection(this.values(), other).isEmpty(); |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | // returns a new instance, not mutate the current instance |
| 84 | @Override |
| 85 | public DiscreteResources add(DiscreteResources other) { |
Sho SHIMIZU | 9e3031a | 2016-06-07 16:32:06 -0700 | [diff] [blame] | 86 | if (other instanceof GenericDiscreteResources) { |
Sho SHIMIZU | 4920d05 | 2016-06-16 14:26:35 -0700 | [diff] [blame] | 87 | // make sure that the set is serializable |
| 88 | return of(new LinkedHashSet<>(Sets.union(this.values(), other.values()))); |
Sho SHIMIZU | 9e3031a | 2016-06-07 16:32:06 -0700 | [diff] [blame] | 89 | } else if (other instanceof EmptyDiscreteResources) { |
| 90 | return this; |
| 91 | } |
| 92 | |
| 93 | return DiscreteResources.of(Sets.union(this.values(), other.values())); |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 94 | } |
| 95 | |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 96 | @Override |
| 97 | public Set<DiscreteResource> values() { |
| 98 | // breaks immutability, but intentionally returns the field |
| 99 | // because this class is transient |
| 100 | return values; |
| 101 | } |
| 102 | |
| 103 | @Override |
Sho SHIMIZU | 9cc4a24 | 2016-05-26 12:55:35 -0700 | [diff] [blame] | 104 | public <T> Set<DiscreteResource> valuesOf(Class<T> cls) { |
| 105 | return values.stream() |
| 106 | .filter(x -> x.isTypeOf(cls)) |
| 107 | .collect(Collectors.toCollection(LinkedHashSet::new)); |
| 108 | } |
| 109 | |
| 110 | @Override |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 111 | public int hashCode() { |
| 112 | return Objects.hash(values); |
| 113 | } |
| 114 | |
| 115 | @Override |
| 116 | public boolean equals(Object obj) { |
| 117 | if (this == obj) { |
| 118 | return true; |
| 119 | } |
| 120 | if (obj == null || getClass() != obj.getClass()) { |
| 121 | return false; |
| 122 | } |
Sho SHIMIZU | f503a62 | 2016-05-25 11:12:23 -0700 | [diff] [blame] | 123 | final GenericDiscreteResources other = (GenericDiscreteResources) obj; |
Sho SHIMIZU | 32f57e9 | 2016-05-18 10:23:06 -0700 | [diff] [blame] | 124 | return Objects.equals(this.values, other.values); |
| 125 | } |
| 126 | |
| 127 | @Override |
| 128 | public String toString() { |
| 129 | return MoreObjects.toStringHelper(this) |
| 130 | .add("values", values) |
| 131 | .toString(); |
| 132 | } |
| 133 | } |