Examples with Tuple edu.uci.ics.textdb.api.tuple.Tuple used on opensource projects

Example 91 with Tuple

use of edu.uci.ics.textdb.api.tuple.Tuple in project textdb by TextDB.

the class Sampler method constructSampleBuffer.

private void constructSampleBuffer() throws TextDBException {
    sampleBuffer = new ArrayList<Tuple>();
    Random random = new Random(System.currentTimeMillis());
    Tuple tuple;
    int count = 0;
    while ((tuple = inputOperator.getNextTuple()) != null) {
        if (count < predicate.getSampleSize()) {
            sampleBuffer.add(tuple);
        } else {
            /* In SampleType.FIRST_K_ARRIVAL mode, when the samleBuffer is full,
                 * it will finish constructing the buffer tuples and return.
                 */
            if (this.predicate.getSampleType() == SampleType.FIRST_K_ARRIVAL) {
                break;
            }
            /*
                 *  In SampleType.RANDOM_SAMPLE mode, the reservoir sampling algorithm is
                 *  used to sample tuples.
                 *  When the buffer is full, the ith incoming tuple is chosen to replace
                 *  tuple the buffer with probability of bufferSize / i.
                 */
            if (this.predicate.getSampleType() == SampleType.RANDOM_SAMPLE) {
                int randomPos = random.nextInt(count);
                if (randomPos < predicate.getSampleSize()) {
                    sampleBuffer.set(randomPos, tuple);
                }
            }
        }
        count++;
    }
}

Example 92 with Tuple

use of edu.uci.ics.textdb.api.tuple.Tuple in project textdb by TextDB.

the class OneToNBroadcastConnectorTest method testThreeOutputsWithItself.

/*
     * This test tests if the connectors' three outputs are the same.
     */
@Test
public void testThreeOutputsWithItself() throws Exception {
    IOperator sourceOperator = new ScanBasedSourceOperator(new ScanSourcePredicate(PEOPLE_TABLE));
    OneToNBroadcastConnector connector = new OneToNBroadcastConnector(3);
    connector.setInputOperator(sourceOperator);
    IOperator output1 = connector.getOutputOperator(0);
    IOperator output2 = connector.getOutputOperator(1);
    IOperator output3 = connector.getOutputOperator(2);
    output1.open();
    output2.open();
    output3.open();
    List<Tuple> output1Results = new ArrayList<>();
    Tuple nextTuple = null;
    while ((nextTuple = output1.getNextTuple()) != null) {
        output1Results.add(nextTuple);
    }
    List<Tuple> output2Results = new ArrayList<>();
    nextTuple = null;
    while ((nextTuple = output2.getNextTuple()) != null) {
        output2Results.add(nextTuple);
    }
    List<Tuple> output3Results = new ArrayList<>();
    nextTuple = null;
    while ((nextTuple = output3.getNextTuple()) != null) {
        output3Results.add(nextTuple);
    }
    output1.close();
    output2.close();
    output3.close();
    List<Tuple> expectedResults = TestConstants.getSamplePeopleTuples();
    Assert.assertTrue(TestUtils.equals(expectedResults, output1Results));
    Assert.assertTrue(TestUtils.equals(expectedResults, output2Results));
    Assert.assertTrue(TestUtils.equals(expectedResults, output3Results));
}

Example 93 with Tuple

use of edu.uci.ics.textdb.api.tuple.Tuple in project textdb by TextDB.

the class DictionaryMatcherTest method testSingleWordQueryInStringFieldUsingPhraseChinese.

/**
     * Scenario: verifies GetNextTuple of DictionaryMatcher and multiple word
     * queries in String Field using PHRASE_INDEXBASED in Chinese.
     */
@Test
public void testSingleWordQueryInStringFieldUsingPhraseChinese() throws Exception {
    ArrayList<String> names = new ArrayList<String>(Arrays.asList("长孙", "无忌"));
    Dictionary dictionary = new Dictionary(names);
    // create a data tuple first
    List<Span> list1 = new ArrayList<Span>();
    List<Span> list2 = new ArrayList<Span>();
    Span span1 = new Span("lastName", 0, 2, "长孙", "长孙");
    Span span2 = new Span("firstName", 0, 2, "无忌", "无忌");
    list1.add(span1);
    list2.add(span2);
    Attribute[] schemaAttributes = new Attribute[TestConstantsChinese.ATTRIBUTES_PEOPLE.length + 1];
    for (int count = 0; count < schemaAttributes.length - 1; count++) {
        schemaAttributes[count] = TestConstantsChinese.ATTRIBUTES_PEOPLE[count];
    }
    schemaAttributes[schemaAttributes.length - 1] = RESULTS_ATTRIBUTE;
    IField[] fields1 = { new StringField("无忌"), new StringField("长孙"), new IntegerField(46), new DoubleField(5.50), new DateField(new SimpleDateFormat("MM-dd-yyyy").parse("01-14-1970")), new TextField("北京大学电气工程学院"), new ListField<Span>(list1) };
    Tuple tuple1 = new Tuple(new Schema(schemaAttributes), fields1);
    IField[] fields2 = { new StringField("无忌"), new StringField("长孙"), new IntegerField(46), new DoubleField(5.50), new DateField(new SimpleDateFormat("MM-dd-yyyy").parse("01-14-1970")), new TextField("北京大学电气工程学院"), new ListField<Span>(list2) };
    Tuple tuple2 = new Tuple(new Schema(schemaAttributes), fields2);
    List<Tuple> expectedResults = new ArrayList<Tuple>();
    expectedResults.add(tuple1);
    expectedResults.add(tuple2);
    List<String> attributeNames = Arrays.asList(TestConstantsChinese.FIRST_NAME, TestConstantsChinese.LAST_NAME, TestConstantsChinese.DESCRIPTION);
    List<Tuple> returnedResults = DictionaryMatcherTestHelper.getQueryResults(CHINESE_TABLE, dictionary, attributeNames, KeywordMatchingType.PHRASE_INDEXBASED);
    boolean contains = TestUtils.equals(expectedResults, returnedResults);
    Assert.assertTrue(contains);
}

Example 94 with Tuple

use of edu.uci.ics.textdb.api.tuple.Tuple in project textdb by TextDB.

the class ComparableMatcherTest method getQueryResults.

public List<Tuple> getQueryResults(ComparableMatcher comparableMatcher) throws TextDBException {
    List<Tuple> returnedResults = new ArrayList<>();
    Tuple nextTuple = null;
    while ((nextTuple = comparableMatcher.getNextTuple()) != null) {
        returnedResults.add(nextTuple);
    }
    return returnedResults;
}

Example 95 with Tuple

use of edu.uci.ics.textdb.api.tuple.Tuple in project textdb by TextDB.

the class ComparableMatcherTest method testIntegerMatching3.

/**
     * Verifies the behavior of ComparableMatcher<Integer> with matching type GREATER_THAN_OR_EQAUL_TO
     *
     * @throws Exception
     */
@Test
public void testIntegerMatching3() throws Exception {
    // Prepare the query
    int threshold = 45;
    Attribute attribute = TestConstants.AGE_ATTR;
    String attributeName = attribute.getAttributeName();
    ComparisonType matchingType = ComparisonType.GREATER_THAN_OR_EQUAL_TO;
    // Perform the query
    List<Tuple> returnedResults = getIntegerQueryResults(attributeName, matchingType, threshold);
    IField[] fields1 = { new StringField("bruce"), new StringField("john Lee"), new IntegerField(46), new DoubleField(5.50), new DateField(new SimpleDateFormat("MM-dd-yyyy").parse("01-14-1970")), new TextField("Tall Angry") };
    IField[] fields2 = { new StringField("tom hanks"), new StringField("cruise"), new IntegerField(45), new DoubleField(5.95), new DateField(new SimpleDateFormat("MM-dd-yyyy").parse("01-13-1971")), new TextField("Short Brown") };
    List<Tuple> expectedResults = new ArrayList<>();
    expectedResults.add(new Tuple(TestConstants.SCHEMA_PEOPLE, fields1));
    expectedResults.add(new Tuple(TestConstants.SCHEMA_PEOPLE, fields2));
    // check the results
    Assert.assertEquals(2, returnedResults.size());
    Assert.assertTrue(TestUtils.equals(expectedResults, returnedResults));
}