Examples with JoinDistancePredicate edu.uci.ics.texera.dataflow.join.JoinDistancePredicate used on opensource projects

Example 6 with JoinDistancePredicate

use of edu.uci.ics.texera.dataflow.join.JoinDistancePredicate in project textdb by TextDB.

the class PredicateBaseTest method testJoinDistance.

@Test
public void testJoinDistance() throws Exception {
    JoinDistancePredicate joinDistancePredicate = new JoinDistancePredicate("attr1", "attr1", 100);
    testPredicate(joinDistancePredicate);
}

Example 7 with JoinDistancePredicate

use of edu.uci.ics.texera.dataflow.join.JoinDistancePredicate in project textdb by TextDB.

the class JoinDistanceTest method testForLimitWhenLimitIsZero.

/*
     * This case tests for the scenario when limit is 0 and offset is 0 and 
     * join is performed.
     * Test result: An empty list.
     */
@Test
public void testForLimitWhenLimitIsZero() throws Exception {
    List<Tuple> tuples = JoinTestConstants.bookGroup1.subList(1, 5);
    JoinTestHelper.insertToTable(BOOK_TABLE, tuples);
    KeywordMatcherSourceOperator keywordSourceOuter = JoinTestHelper.getKeywordSource(BOOK_TABLE, "typical", conjunction);
    KeywordMatcherSourceOperator keywordSourceInner = JoinTestHelper.getKeywordSource(BOOK_TABLE, "actually", conjunction);
    List<Tuple> resultList = JoinTestHelper.getJoinDistanceResults(keywordSourceInner, keywordSourceOuter, new JoinDistancePredicate(JoinTestConstants.REVIEW, 90), 0, 0);
    Assert.assertEquals(0, resultList.size());
}

Example 8 with JoinDistancePredicate

use of edu.uci.ics.texera.dataflow.join.JoinDistancePredicate in project textdb by TextDB.

the class JoinDistanceTest method testBothTheSpansAreSame.

// This case tests for the scenario when the spans to be joined are the same, i.e. both the keywords
// are same.
// e.g.
// [<11, 18>]
// [<11, 18>]
// threshold = 20 (can be any non-negative number)
// [ ]
// [ ]
// Test result: Join should return same span and key and the value in span
// should be the same.
// [<11, 18>]
@Test
public void testBothTheSpansAreSame() throws Exception {
    JoinTestHelper.insertToTable(BOOK_TABLE, JoinTestConstants.bookGroup1.get(0));
    KeywordMatcherSourceOperator keywordSourceOuter = JoinTestHelper.getKeywordSource(BOOK_TABLE, "special", conjunction);
    KeywordMatcherSourceOperator keywordSourceInner = JoinTestHelper.getKeywordSource(BOOK_TABLE, "special", conjunction);
    List<Tuple> resultList = JoinTestHelper.getJoinDistanceResults(keywordSourceInner, keywordSourceOuter, new JoinDistancePredicate(JoinTestConstants.REVIEW, 20), Integer.MAX_VALUE, 0);
    Schema resultSchema = new Schema.Builder().add(JoinTestConstants.BOOK_SCHEMA).add(SchemaConstants.SPAN_LIST_ATTRIBUTE).build();
    List<Span> spanList = new ArrayList<>();
    Span span1 = new Span(JoinTestConstants.REVIEW, 11, 18, "special_special", "special");
    spanList.add(span1);
    IField[] book1 = { new IntegerField(52), new StringField("Mary Roach"), new StringField("Grunt: The Curious Science of Humans at War"), new IntegerField(288), new TextField("It takes a special kind " + "of writer to make topics ranging from death to our " + "gastrointestinal tract interesting (sometimes " + "hilariously so), and pop science writer Mary Roach is " + "always up to the task."), new ListField<>(spanList) };
    Tuple expectedTuple = new Tuple(resultSchema, book1);
    List<Tuple> expectedResult = new ArrayList<>();
    expectedResult.add(expectedTuple);
    Assert.assertEquals(1, resultList.size());
    Assert.assertTrue(TestUtils.equals(expectedResult, resultList));
}

Example 9 with JoinDistancePredicate

use of edu.uci.ics.texera.dataflow.join.JoinDistancePredicate in project textdb by TextDB.

the class JoinDistanceTest method testOneSpanEncompassesOtherAndDifferenceGreaterThanThreshold.

/*
     * This case tests for the scenario when one of the spans to be joined encompasses the other span
     * and |(span 1 spanStartIndex) - (span 2 spanStartIndex)|
     * and/or |(span 1 spanEndIndex) - (span 2 spanEndIndex)| exceed threshold.
     * 
     * e.g.
     * [<11, 18>]
     * [<3, 33>]
     * threshold = 10 (beyond threshold)
     * Test result: Join should return an empty list.
     */
@Test
public void testOneSpanEncompassesOtherAndDifferenceGreaterThanThreshold() throws Exception {
    JoinTestHelper.insertToTable(BOOK_TABLE, JoinTestConstants.bookGroup1.get(0));
    KeywordMatcherSourceOperator keywordSourceOuter = JoinTestHelper.getKeywordSource(BOOK_TABLE, "special", conjunction);
    KeywordMatcherSourceOperator keywordSourceInner = JoinTestHelper.getKeywordSource(BOOK_TABLE, "takes a special kind of writer", phrase);
    List<Tuple> resultList = JoinTestHelper.getJoinDistanceResults(keywordSourceInner, keywordSourceOuter, new JoinDistancePredicate(JoinTestConstants.REVIEW, 10), Integer.MAX_VALUE, 0);
    Assert.assertEquals(0, resultList.size());
}

Example 10 with JoinDistancePredicate

use of edu.uci.ics.texera.dataflow.join.JoinDistancePredicate in project textdb by TextDB.

the class JoinDistanceTest method testWhenOpenOrCloseIsCalledTwiceAndTryToGetNextTupleWhenClosed.

// ------------------------<Test cases for cursor.>------------------------
/*
     * This case tests for the scenario when open and/or close is called twice 
     * and also when getNextTuple() is called when operator is closed.
     * Test result: Opening or closing the operator twice shouldn't result in 
     * any noticeable difference in operation. But, calling getNetTuple() when 
     * operator is closed should throw an exception.
     */
@Test(expected = DataflowException.class)
public void testWhenOpenOrCloseIsCalledTwiceAndTryToGetNextTupleWhenClosed() throws Exception {
    List<Tuple> tuples = JoinTestConstants.bookGroup1.subList(1, 5);
    JoinTestHelper.insertToTable(BOOK_TABLE, tuples);
    KeywordMatcherSourceOperator keywordSourceOuter = JoinTestHelper.getKeywordSource(BOOK_TABLE, "typical", conjunction);
    KeywordMatcherSourceOperator keywordSourceInner = JoinTestHelper.getKeywordSource(BOOK_TABLE, "actually", conjunction);
    JoinDistancePredicate distancePredicate = new JoinDistancePredicate(JoinTestConstants.REVIEW, 90);
    Join join = new Join(distancePredicate);
    join.setOuterInputOperator(keywordSourceOuter);
    join.setInnerInputOperator(keywordSourceInner);
    Tuple tuple;
    List<Tuple> resultList = new ArrayList<>();
    join.open();
    join.open();
    while ((tuple = join.getNextTuple()) != null) {
        resultList.add(tuple);
    }
    join.close();
    join.close();
    Assert.assertEquals(4, resultList.size());
    // this line should throw an exception because operator is already closed
    if ((tuple = join.getNextTuple()) != null) {
        resultList.add(tuple);
    }
}