Examples with IsNullPredicate io.confluent.ksql.execution.expression.tree.IsNullPredicate used on opensource projects

Example 1 with IsNullPredicate

use of io.confluent.ksql.execution.expression.tree.IsNullPredicate in project ksql by confluentinc.

the class ExpressionTreeRewriterTest method shouldRewriteIsNullPredicate.

@Test
public void shouldRewriteIsNullPredicate() {
    // Given:
    final IsNullPredicate parsed = parseExpression("col0 IS NULL");
    when(processor.apply(parsed.getValue(), context)).thenReturn(expr1);
    // When:
    final Expression rewritten = expressionRewriter.rewrite(parsed, context);
    // Then:
    assertThat(rewritten, equalTo(new IsNullPredicate(parsed.getLocation(), expr1)));
}

Example 2 with IsNullPredicate

use of io.confluent.ksql.execution.expression.tree.IsNullPredicate in project ksql by confluentinc.

the class InterpretedExpressionTest method shouldEvaluateIsNullPredicate.

@Test
public void shouldEvaluateIsNullPredicate() {
    // Given:
    final Expression expression1 = new IsNullPredicate(COL11);
    final Expression expression2 = new IsNullPredicate(new NullLiteral());
    // When:
    InterpretedExpression interpreter1 = interpreter(expression1);
    InterpretedExpression interpreter2 = interpreter(expression2);
    // Then:
    assertThat(interpreter1.evaluate(make(11, true)), is(false));
    assertThat(interpreter1.evaluate(make(11, null)), is(true));
    assertThat(interpreter2.evaluate(ROW), is(true));
}