/*
* Copyright © 2015-2016 Cask Data, Inc.
*
* 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 co.cask.cdap.proto.id;
import co.cask.cdap.proto.Id;
import co.cask.cdap.proto.element.EntityType;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.Objects;
/**
* Uniquely identifies a stream view.
*/
public class StreamViewId extends EntityId implements NamespacedId, ParentedId<StreamId> {
private final String namespace;
private final String stream;
private final String view;
public StreamViewId(String namespace, String stream, String view) {
super(EntityType.STREAM_VIEW);
this.namespace = namespace;
this.stream = stream;
this.view = view;
}
public String getNamespace() {
return namespace;
}
public String getStream() {
return stream;
}
public String getView() {
return view;
}
@Override
public StreamId getParent() {
return new StreamId(namespace, stream);
}
@Override
public boolean equals(Object o) {
if (!super.equals(o)) {
return false;
}
StreamViewId that = (StreamViewId) o;
return Objects.equals(namespace, that.namespace) &&
Objects.equals(stream, that.stream) &&
Objects.equals(view, that.view);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), namespace, stream, view);
}
@Override
public Id.Stream.View toId() {
return Id.Stream.View.from(namespace, stream, view);
}
@SuppressWarnings("unused")
public static StreamViewId fromIdParts(Iterable<String> idString) {
Iterator<String> iterator = idString.iterator();
return new StreamViewId(
next(iterator, "namespace"), next(iterator, "stream"),
nextAndEnd(iterator, "view"));
}
@Override
protected Iterable<String> toIdParts() {
return Collections.unmodifiableList(Arrays.asList(namespace, stream, view));
}
public static StreamViewId fromString(String string) {
return EntityId.fromString(string, StreamViewId.class);
}
}