Examples with NullWritable org.apache.hadoop.io.NullWritable used on opensource projects

Example 86 with NullWritable

use of org.apache.hadoop.io.NullWritable in project jena by apache.

the class TestDistinctTriples method distinct_triples_01.

@Test
public void distinct_triples_01() throws IOException {
    MapReduceDriver<LongWritable, TripleWritable, TripleWritable, NullWritable, NullWritable, TripleWritable> driver = this.getMapReduceDriver();
    Triple t = new Triple(NodeFactory.createURI("urn:s"), NodeFactory.createURI("urn:p"), NodeFactory.createLiteral("1"));
    TripleWritable tw = new TripleWritable(t);
    driver.addInput(new LongWritable(1), tw);
    driver.addOutput(NullWritable.get(), tw);
    driver.runTest();
}

Example 87 with NullWritable

use of org.apache.hadoop.io.NullWritable in project jena by apache.

the class AbstractCharacteristicSetGeneratingReducerTests method characteristic_set_generating_reducer_04.

/**
     * Test basic characteristic set computation
     * 
     * @throws IOException
     */
@Test
public void characteristic_set_generating_reducer_04() throws IOException {
    MapReduceDriver<LongWritable, T, NodeWritable, T, CharacteristicSetWritable, NullWritable> driver = this.getMapReduceDriver();
    T tuple = this.createTuple(1, "http://predicate");
    driver.addInput(new LongWritable(1), tuple);
    tuple = this.createTuple(1, "http://other");
    driver.addInput(new LongWritable(1), tuple);
    // Single entry sets
    this.createSet(driver, 1, "http://predicate");
    this.createSet(driver, 1, "http://other");
    // Two entry sets
    this.createSet(driver, 1, "http://predicate", "http://other");
    driver.runTest(false);
}

Example 88 with NullWritable

use of org.apache.hadoop.io.NullWritable in project jena by apache.

the class AbstractCharacteristicSetGeneratingReducerTests method characteristic_set_generating_reducer_03.

/**
     * Test basic characteristic set computation
     * 
     * @throws IOException
     */
@Test
public void characteristic_set_generating_reducer_03() throws IOException {
    MapReduceDriver<LongWritable, T, NodeWritable, T, CharacteristicSetWritable, NullWritable> driver = this.getMapReduceDriver();
    T tuple = this.createTuple(1, "http://predicate");
    driver.addInput(new LongWritable(1), tuple);
    tuple = this.createTuple(2, "http://predicate");
    driver.addInput(new LongWritable(2), tuple);
    this.createSet(driver, 2, "http://predicate");
    driver.runTest(false);
}

Example 89 with NullWritable

use of org.apache.hadoop.io.NullWritable in project jena by apache.

the class AbstractCharacteristicSetGeneratingReducerTests method characteristic_set_generating_reducer_02.

/**
     * Test basic characteristic set computation
     * 
     * @throws IOException
     */
@Test
public void characteristic_set_generating_reducer_02() throws IOException {
    MapReduceDriver<LongWritable, T, NodeWritable, T, CharacteristicSetWritable, NullWritable> driver = this.getMapReduceDriver();
    T tuple = this.createTuple(1, "http://predicate");
    driver.addInput(new LongWritable(1), tuple);
    driver.addInput(new LongWritable(1), tuple);
    this.createSet(driver, 1, "http://predicate");
    driver.runTest(false);
}

Example 90 with NullWritable

use of org.apache.hadoop.io.NullWritable in project jena by apache.

the class AbstractCharacteristicSetGeneratingReducerTests method characteristic_set_generating_reducer_05.

/**
     * Test basic characteristic set computation
     * 
     * @throws IOException
     */
@Test
public void characteristic_set_generating_reducer_05() throws IOException {
    MapReduceDriver<LongWritable, T, NodeWritable, T, CharacteristicSetWritable, NullWritable> driver = this.getMapReduceDriver();
    T tuple = this.createTuple(1, "http://predicate");
    driver.addInput(new LongWritable(1), tuple);
    tuple = this.createTuple(1, "http://other");
    driver.addInput(new LongWritable(2), tuple);
    tuple = this.createTuple(1, "http://third");
    driver.addInput(new LongWritable(3), tuple);
    // Single entry sets
    this.createSet(driver, 1, "http://predicate");
    this.createSet(driver, 1, "http://other");
    this.createSet(driver, 1, "http://third");
    // Two entry sets
    this.createSet(driver, 1, "http://predicate", "http://other");
    this.createSet(driver, 1, "http://predicate", "http://third");
    this.createSet(driver, 1, "http://other", "http://third");
    // Three entry sets
    this.createSet(driver, 1, "http://predicate", "http://other", "http://third");
    driver.runTest(false);
}