/**
* Test characteristic set reduction
*
* @throws IOException
*/
@Test
public void characteristic_set_reducer_06() throws IOException {
MapReduceDriver<
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
NullWritable>
driver = this.getMapReduceDriver();
this.createSet(driver, 2, 1, "http://predicate", "http://other");
this.createSet(driver, 1, 1, "http://other");
driver.runTest(false);
driver = getMapReduceDriver();
createSet(driver, 2, 1, "http://predicate", "http://other");
createSet(driver, 1, 1, "http://other");
List<Pair<CharacteristicSetWritable, NullWritable>> results = driver.run();
for (Pair<CharacteristicSetWritable, NullWritable> pair : results) {
CharacteristicSetWritable cw = pair.getFirst();
boolean expectTwo = cw.hasCharacteristic("http://predicate");
Assert.assertEquals(expectTwo ? 2 : 1, cw.getCount().get());
}
}
/**
* Checks that a writable round trips
*
* @param set Characteristic set
* @throws IOException
*/
private void checkRoundTrip(CharacteristicSetWritable set) throws IOException {
// Test round trip
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
DataOutputStream output = new DataOutputStream(outputStream);
set.write(output);
ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
DataInputStream input = new DataInputStream(inputStream);
CharacteristicSetWritable actual = CharacteristicSetWritable.read(input);
Assert.assertEquals(set, actual);
}
/**
* Checks a characteristic set
*
* @param set Set
* @param expectedItems Expected number of characteristics
* @param expectedCounts Expected counts for characteristics
*/
protected final void checkCharacteristicSet(
CharacteristicSetWritable set, int expectedItems, long[] expectedCounts) {
Assert.assertEquals(expectedItems, set.size());
Assert.assertEquals(expectedItems, expectedCounts.length);
Iterator<CharacteristicWritable> iter = set.getCharacteristics();
int i = 0;
while (iter.hasNext()) {
CharacteristicWritable cw = iter.next();
Assert.assertEquals(expectedCounts[i], cw.getCount().get());
i++;
}
}
/**
* Tests characteristic sets
*
* @throws IOException
*/
@Test
public void characteristic_set_writable_02() throws IOException {
CharacteristicSetWritable set = new CharacteristicSetWritable();
// Add some characteristics
CharacteristicWritable cw1 =
new CharacteristicWritable(NodeFactory.createURI("http://example.org"));
CharacteristicWritable cw2 =
new CharacteristicWritable(NodeFactory.createURI("http://example.org"), 2);
set.add(cw1);
set.add(cw2);
this.checkCharacteristicSet(set, 1, new long[] {3});
this.checkRoundTrip(set);
}
/**
* Tests characteristic sets
*
* @throws IOException
*/
@Test
public void characteristic_set_writable_03() throws IOException {
CharacteristicSetWritable set1 = new CharacteristicSetWritable();
CharacteristicSetWritable set2 = new CharacteristicSetWritable();
// Add some characteristics
CharacteristicWritable cw1 =
new CharacteristicWritable(NodeFactory.createURI("http://example.org"));
CharacteristicWritable cw2 =
new CharacteristicWritable(NodeFactory.createURI("http://example.org/other"));
set1.add(cw1);
set2.add(cw2);
this.checkCharacteristicSet(set1, 1, new long[] {1});
this.checkCharacteristicSet(set2, 1, new long[] {1});
this.checkRoundTrip(set1);
this.checkRoundTrip(set2);
Assert.assertNotEquals(set1, set2);
}
/**
* Test characteristic set reduction
*
* @throws IOException
*/
@Test
public void characteristic_set_reducer_02() throws IOException {
MapReduceDriver<
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
NullWritable>
driver = this.getMapReduceDriver();
this.createSet(driver, 2, 1, "http://predicate");
driver.runTest(false);
driver = getMapReduceDriver();
createSet(driver, 2, 1, "http://predicate");
List<Pair<CharacteristicSetWritable, NullWritable>> results = driver.run();
CharacteristicSetWritable cw = results.get(0).getFirst();
Assert.assertEquals(2, cw.getCount().get());
}
/**
* Creates a set consisting of the given predicates
*
* @param predicates Predicates
* @return Set
*/
protected CharacteristicSetWritable createSet(
MapReduceDriver<
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
CharacteristicSetWritable,
NullWritable>
driver,
int inputOccurrences,
int outputOccurrences,
String... predicates) {
CharacteristicSetWritable set = new CharacteristicSetWritable();
for (String predicateUri : predicates) {
set.add(new CharacteristicWritable(NodeFactory.createURI(predicateUri)));
}
for (int i = 1; i <= inputOccurrences; i++) {
driver.addInput(set, set);
}
for (int i = 1; i <= outputOccurrences; i++) {
driver.addOutput(set, NullWritable.get());
}
return set;
}
