/*
* Copyright © 2014-2015 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.dataset2.lib.file;
import co.cask.cdap.api.dataset.DatasetContext;
import co.cask.cdap.api.dataset.DatasetDefinition;
import co.cask.cdap.api.dataset.DatasetProperties;
import co.cask.cdap.api.dataset.DatasetSpecification;
import co.cask.cdap.api.dataset.lib.FileSet;
import co.cask.cdap.common.conf.CConfiguration;
import co.cask.cdap.common.io.RootLocationFactory;
import co.cask.cdap.common.namespace.NamespacedLocationFactory;
import com.google.inject.Inject;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* Dataset definition for File datasets.
*/
public class FileSetDefinition implements DatasetDefinition<FileSet, FileSetAdmin> {
@Inject
private RootLocationFactory absoluteLocationFactory;
@Inject
private NamespacedLocationFactory namespacedLocationFactory;
@Inject
private CConfiguration cConf;
private final String name;
/**
* Constructor with dataset type name.
* @param name the type name to be used for this dataset definition.
*/
public FileSetDefinition(String name) {
this.name = name;
}
@Override
public String getName() {
return name;
}
@Override
public DatasetSpecification configure(String instanceName, DatasetProperties properties) {
Map<String, String> newProperties = new HashMap<>(properties.getProperties());
newProperties.put(FileSetDataset.FILESET_VERSION_PROPERTY, FileSetDataset.FILESET_VERSION);
return DatasetSpecification
.builder(instanceName, getName())
.properties(newProperties)
.build();
}
@Override
public FileSetAdmin getAdmin(DatasetContext datasetContext, DatasetSpecification spec,
ClassLoader classLoader) throws IOException {
return new FileSetAdmin(datasetContext, cConf, absoluteLocationFactory, namespacedLocationFactory, spec);
}
@Override
public FileSet getDataset(DatasetContext datasetContext, DatasetSpecification spec, Map<String, String> arguments,
ClassLoader classLoader) throws IOException {
return new FileSetDataset(datasetContext, cConf, spec, absoluteLocationFactory, namespacedLocationFactory,
arguments == null ? Collections.<String, String>emptyMap() : arguments);
}
}