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/*
* Copyright 2014 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;
import java.net.URI;
import java.util.Objects;
/**
* Immutable representation of a device identity.
*/
public final class DeviceId extends ElementId {
/**
* Represents either no device, or an unspecified device.
*/
public static final DeviceId NONE = deviceId("none:none");
private final URI uri;
private final String str;
// Public construction is prohibited
private DeviceId(URI uri) {
this.uri = uri;
this.str = uri.toString().toLowerCase();
}
// Default constructor for serialization
protected DeviceId() {
this.uri = null;
this.str = null;
}
/**
* Creates a device id using the supplied URI.
*
* @param uri device URI
* @return DeviceId
*/
public static DeviceId deviceId(URI uri) {
return new DeviceId(uri);
}
/**
* Creates a device id using the supplied URI string.
*
* @param string device URI string
* @return DeviceId
*/
public static DeviceId deviceId(String string) {
return deviceId(URI.create(string));
}
/**
* Returns the backing URI.
*
* @return backing URI
*/
public URI uri() {
return uri;
}
@Override
public int hashCode() {
return str.hashCode();
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof DeviceId) {
final DeviceId that = (DeviceId) obj;
return this.getClass() == that.getClass() &&
Objects.equals(this.str, that.str);
}
return false;
}
@Override
public String toString() {
return str;
}
}
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