/*
* Copyright © 2014 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.internal.app.runtime;
import co.cask.cdap.api.common.RuntimeArguments;
import co.cask.cdap.api.common.Scope;
import co.cask.cdap.api.data.DatasetContext;
import co.cask.cdap.api.dataset.Dataset;
import com.google.common.collect.ImmutableMap;
import java.util.Map;
/**
* Helper to create Datasets.
*/
public final class Datasets {
public static Map<String, Dataset> createDatasets(DatasetContext context,
Iterable<String> datasetNames,
Map<String, String> arguments) {
ImmutableMap.Builder<String, Dataset> builder = ImmutableMap.builder();
for (String name : datasetNames) {
Dataset dataset;
if (arguments != null && !arguments.isEmpty()) {
Map<String, String> datasetArguments = RuntimeArguments.
extractScope(Scope.DATASET, name, arguments);
dataset = context.getDataset(name, datasetArguments);
} else {
dataset = context.getDataset(name);
}
builder.put(name, dataset);
}
return builder.build();
}
private Datasets() {}
}