/*
* Copyright © 2015 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.data2.registry.internal.keymaker;
import co.cask.cdap.data2.dataset2.lib.table.MDSKey;
import co.cask.cdap.data2.registry.internal.pair.KeyMaker;
import co.cask.cdap.proto.Id;
/**
* {@link KeyMaker} for {@link Id.DatasetInstance}.
*/
public class DatasetKeyMaker implements KeyMaker<Id.DatasetInstance> {
@Override
public MDSKey getKey(Id.DatasetInstance datasetInstance) {
return new MDSKey.Builder()
.add(datasetInstance.getNamespaceId())
.add(datasetInstance.getId())
.build();
}
@Override
public void skipKey(MDSKey.Splitter splitter) {
splitter.skipString(); // namespace
splitter.skipString(); // dataset
}
@Override
public Id.DatasetInstance getElement(MDSKey.Splitter splitter) {
return Id.DatasetInstance.from(splitter.getString(), splitter.getString());
}
}