Examples with ExtractionResult com.facebook.presto.spi.relation.DomainTranslator.ExtractionResult used on opensource projects

Example 11 with ExtractionResult

use of com.facebook.presto.spi.relation.DomainTranslator.ExtractionResult in project presto by prestodb.

the class TestRowExpressionDomainTranslator method assertPredicateIsAlwaysFalse.

private void assertPredicateIsAlwaysFalse(RowExpression expression) {
    ExtractionResult result = fromPredicate(expression);
    assertEquals(result.getRemainingExpression(), TRUE_CONSTANT);
    assertTrue(result.getTupleDomain().isNone());
}

Example 12 with ExtractionResult

use of com.facebook.presto.spi.relation.DomainTranslator.ExtractionResult in project presto by prestodb.

the class TestRowExpressionDomainTranslator method testExpressionConstantFolding.

@Test
public void testExpressionConstantFolding() {
    FunctionHandle hex = metadata.getFunctionAndTypeManager().lookupFunction("from_hex", fromTypes(VARCHAR));
    RowExpression originalExpression = greaterThan(C_VARBINARY, call("from_hex", hex, VARBINARY, stringLiteral("123456")));
    ExtractionResult result = fromPredicate(originalExpression);
    assertEquals(result.getRemainingExpression(), TRUE_CONSTANT);
    Slice value = Slices.wrappedBuffer(BaseEncoding.base16().decode("123456"));
    assertEquals(result.getTupleDomain(), withColumnDomains(ImmutableMap.of(C_VARBINARY, Domain.create(ValueSet.ofRanges(Range.greaterThan(VARBINARY, value)), false))));
    RowExpression expression = toPredicate(result.getTupleDomain());
    assertEquals(expression, greaterThan(C_VARBINARY, varbinaryLiteral(value)));
}