cmd.rdf2adjacencylist.java Source code

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Here is the source code for cmd.rdf2adjacencylist.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 cmd;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.jena.grande.Constants;
import org.apache.jena.grande.mapreduce.Rdf2AdjacencyListDriver;

public class rdf2adjacencylist extends Configured implements Tool {

    @Override
    public int run(String[] args) throws Exception {
        if (args.length != 2) {
            System.err.printf("Usage: %s [generic options] <input> <output>\n", getClass().getName());
            ToolRunner.printGenericCommandUsage(System.err);
            return -1;
        }

        Configuration configuration = getConf();
        boolean overrideOutput = configuration.getBoolean(Constants.OPTION_OVERWRITE_OUTPUT,
                Constants.OPTION_OVERWRITE_OUTPUT_DEFAULT);

        FileSystem fs = FileSystem.get(new Path(args[1]).toUri(), configuration);
        if (overrideOutput) {
            fs.delete(new Path(args[1]), true);
        }

        Tool tool = new Rdf2AdjacencyListDriver(configuration);
        tool.run(new String[] { args[0], args[1] });

        return 0;
    }

    public static void main(String[] args) throws Exception {
        int exitCode = ToolRunner.run(new rdf2adjacencylist(), args);
        System.exit(exitCode);
    }

}