cascading.tap.hadoop.TapCollectorTest.java Source code

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Here is the source code for cascading.tap.hadoop.TapCollectorTest.java

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/*
 * Copyright (c) 2007-2010 Concurrent, Inc. All Rights Reserved.
 *
 * Project and contact information: http://www.cascading.org/
 *
 * This file is part of the Cascading project.
 *
 * Cascading is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Cascading is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Cascading.  If not, see <http://www.gnu.org/licenses/>.
 */

package cascading.tap.hadoop;

import java.io.IOException;

import cascading.CascadingTestCase;
import cascading.scheme.SequenceFile;
import cascading.scheme.TextLine;
import cascading.tap.Lfs;
import cascading.tap.Tap;
import cascading.tuple.Fields;
import cascading.tuple.Tuple;
import cascading.tuple.TupleEntryIterator;
import org.apache.hadoop.mapred.JobConf;

/**
 *
 */
public class TapCollectorTest extends CascadingTestCase {
    String outputPath = "build/test/output/tap/";

    public TapCollectorTest() {
        super("tap collector tests");
    }

    public void testTapCollectorText() throws IOException {
        Tap tap = new Lfs(new TextLine(), outputPath + "tapcollectortext");

        runTest(tap);
    }

    public void testTapCollectorSequence() throws IOException {
        Tap tap = new Lfs(new SequenceFile(new Fields("string", "value", "number")),
                outputPath + "tapcollectorseq");

        runTest(tap);
    }

    private void runTest(Tap tap) throws IOException {
        JobConf conf = new JobConf();

        TapCollector collector = (TapCollector) tap.openForWrite(conf); // casting for test

        for (int i = 0; i < 100; i++)
            collector.collect(new Tuple("string", "" + i, i));

        collector.close();

        TupleEntryIterator iterator = tap.openForRead(conf);

        int count = 0;
        while (iterator.hasNext()) {
            iterator.next();
            count++;
        }

        iterator.close();

        assertEquals("wrong size", 100, count);
    }
}