co.cask.cdap.cli.completer.element.DatasetNameCompleter.java Source code

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Here is the source code for co.cask.cdap.cli.completer.element.DatasetNameCompleter.java

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/*
 * Copyright  2012-2014 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.cli.completer.element;

import co.cask.cdap.cli.CLIConfig;
import co.cask.cdap.cli.completer.StringsCompleter;
import co.cask.cdap.client.DatasetClient;
import co.cask.cdap.common.UnauthorizedException;
import co.cask.cdap.proto.DatasetSpecificationSummary;
import com.google.common.base.Function;
import com.google.common.base.Supplier;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;

import java.io.IOException;
import java.util.Collection;
import java.util.List;
import javax.inject.Inject;

/**
 * Completer for dataset names.
 */
public class DatasetNameCompleter extends StringsCompleter {

    @Inject
    public DatasetNameCompleter(final DatasetClient datasetClient, final CLIConfig cliConfig) {
        super(new Supplier<Collection<String>>() {
            @Override
            public Collection<String> get() {
                try {
                    List<DatasetSpecificationSummary> list = datasetClient.list(cliConfig.getCurrentNamespace());
                    return Lists.newArrayList(
                            Iterables.transform(list, new Function<DatasetSpecificationSummary, String>() {
                                @Override
                                public String apply(DatasetSpecificationSummary input) {
                                    // TODO: hack to handle namespaced dataset names -- assumes there are no periods in dataset names
                                    String[] tokens = input.getName().split("\\.");
                                    return tokens[tokens.length - 1];
                                }
                            }));
                } catch (IOException e) {
                    return Lists.newArrayList();
                } catch (UnauthorizedException e) {
                    return Lists.newArrayList();
                }
            }
        });
    }
}