/*
* Copyright (C) 2015 SoftIndex LLC.
*
* 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 io.datakernel.datagraph.graph;
import java.util.Random;
import java.util.concurrent.atomic.AtomicLong;
/**
* Represents a unique id of the stream.
*/
public final class StreamId {
// private static final AtomicLong seed = new AtomicLong(1000);
private static final AtomicLong seed = new AtomicLong(new Random().nextInt() & (Integer.MAX_VALUE >>> 1));
public final long id;
public StreamId() {
id = seed.getAndIncrement();
}
public StreamId(long id) {
this.id = id;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
StreamId streamId = (StreamId) o;
if (id != streamId.id) return false;
return true;
}
@Override
public int hashCode() {
return (int) (id ^ (id >>> 32));
}
@Override
public String toString() {
return "{" + id + '}';
}
}