| /* |
| * Copyright 2016 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.net.newresource; |
| |
| import com.google.common.annotations.Beta; |
| import com.google.common.base.MoreObjects; |
| import com.google.common.collect.ImmutableList; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.PortNumber; |
| |
| import java.util.Objects; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Represents identifier of resource. |
| * This class is exposed to public, but intended to use only in ResourceStore implementations. |
| */ |
| @Beta |
| public final class ResourceId { |
| static final ResourceId ROOT = new ResourceId(); |
| |
| final ImmutableList<Object> components; |
| |
| static ResourceId of(DeviceId device, Object... components) { |
| return new ResourceId(ImmutableList.builder() |
| .add(device) |
| .add(components) |
| .build()); |
| } |
| |
| static ResourceId of(DeviceId device, PortNumber port, Object... components) { |
| return new ResourceId(ImmutableList.builder() |
| .add(device) |
| .add(port) |
| .add(components) |
| .build()); |
| } |
| |
| private ResourceId(ImmutableList<Object> components) { |
| this.components = checkNotNull(components); |
| } |
| |
| // for serializer |
| private ResourceId() { |
| this.components = ImmutableList.of(); |
| } |
| |
| // IndexOutOfBoundsException is raised when the instance is equal to ROOT |
| ResourceId parent() { |
| if (components.size() == 1) { |
| return ROOT; |
| } else { |
| return new ResourceId(components.subList(0, components.size() - 1)); |
| } |
| } |
| |
| ResourceId child(Object child) { |
| return new ResourceId(ImmutableList.builder() |
| .addAll(components) |
| .add(child) |
| .build()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return components.hashCode(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (!(obj instanceof ResourceId)) { |
| return false; |
| } |
| |
| ResourceId other = (ResourceId) obj; |
| return Objects.equals(this.components, other.components); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(this) |
| .add("components", components) |
| .toString(); |
| } |
| } |