/*
* 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 dataset.
*/
public class DatasetId extends EntityId implements NamespacedId, ParentedId<NamespaceId> {
private final String namespace;
private final String dataset;
public DatasetId(String namespace, String dataset) {
super(EntityType.DATASET);
this.namespace = namespace;
this.dataset = dataset;
if (!isValidDatasetId(dataset)) {
throw new IllegalArgumentException(
String.format("Invalid characters found in dataset instance Id %s. Allowed characters are letters, numbers, " +
"and _, -, ., or $.", dataset));
}
}
public String getNamespace() {
return namespace;
}
public String getDataset() {
return dataset;
}
@Override
public NamespaceId getParent() {
return new NamespaceId(namespace);
}
@Override
public Id.DatasetInstance toId() {
return Id.DatasetInstance.from(namespace, dataset);
}
@Override
public boolean equals(Object o) {
if (!super.equals(o)) {
return false;
}
DatasetId datasetId = (DatasetId) o;
return Objects.equals(namespace, datasetId.namespace) &&
Objects.equals(dataset, datasetId.dataset);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), namespace, dataset);
}
@SuppressWarnings("unused")
public static DatasetId fromIdParts(Iterable<String> idString) {
Iterator<String> iterator = idString.iterator();
return new DatasetId(next(iterator, "namespace"), nextAndEnd(iterator, "dataset"));
}
@Override
protected Iterable<String> toIdParts() {
return Collections.unmodifiableList(Arrays.asList(namespace, dataset));
}
public static DatasetId fromString(String string) {
return EntityId.fromString(string, DatasetId.class);
}
}