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

Example 16 with LambdaVariable

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

the class ExpressionTypeManagerTest method shouldHandleNestedLambdas.

@Test
public void shouldHandleNestedLambdas() {
    // Given:
    givenUdfWithNameAndReturnType("TRANSFORM", SqlTypes.INTEGER);
    when(function.parameters()).thenReturn(ImmutableList.of(ArrayType.of(LongType.INSTANCE), IntegerType.INSTANCE, LambdaType.of(ImmutableList.of(DoubleType.INSTANCE, DoubleType.INSTANCE), StringType.INSTANCE), LambdaType.of(ImmutableList.of(DoubleType.INSTANCE, DoubleType.INSTANCE), StringType.INSTANCE)));
    final Expression expression = new ArithmeticBinaryExpression(Operator.ADD, new FunctionCall(FunctionName.of("TRANSFORM"), ImmutableList.of(ARRAYCOL, new IntegerLiteral(0), new LambdaFunctionCall(ImmutableList.of("A", "B"), new ArithmeticBinaryExpression(Operator.ADD, new FunctionCall(FunctionName.of("TRANSFORM"), ImmutableList.of(ARRAYCOL, new IntegerLiteral(0), new LambdaFunctionCall(ImmutableList.of("Q", "V"), new ArithmeticBinaryExpression(Operator.ADD, new LambdaVariable("Q"), new LambdaVariable("V"))))), new LambdaVariable("B"))))), new IntegerLiteral(5));
    // When:
    final SqlType result = expressionTypeManager.getExpressionSqlType(expression);
    assertThat(result, is(SqlTypes.INTEGER));
}

Example 17 with LambdaVariable

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

the class InterpretedExpressionTest method shouldEvaluateLambda.

@SuppressWarnings("unchecked")
@Test
public void shouldEvaluateLambda() {
    // Given:
    final Expression lambda1 = new LambdaFunctionCall(ImmutableList.of("X"), new ArithmeticBinaryExpression(Operator.ADD, new IntegerLiteral(1), new LambdaVariable("X")));
    final Expression lambda2 = new LambdaFunctionCall(ImmutableList.of("X", "Y"), new ArithmeticBinaryExpression(Operator.ADD, new LambdaVariable("Y"), new LambdaVariable("X")));
    final Expression lambda3 = new LambdaFunctionCall(ImmutableList.of("X", "Y", "Z"), new ArithmeticBinaryExpression(Operator.ADD, new LambdaVariable("X"), new ArithmeticBinaryExpression(Operator.ADD, new LambdaVariable("Y"), new LambdaVariable("Z"))));
    final Context context1 = new Context(ImmutableMap.of("X", SqlTypes.INTEGER));
    final Context context2 = new Context(ImmutableMap.of("X", SqlTypes.INTEGER, "Y", SqlTypes.INTEGER));
    final Context context3 = new Context(ImmutableMap.of("X", SqlTypes.INTEGER, "Y", SqlTypes.INTEGER, "Z", SqlTypes.INTEGER));
    // When:
    InterpretedExpression interpreter1 = interpreter(lambda1, context1);
    InterpretedExpression interpreter2 = interpreter(lambda2, context2);
    InterpretedExpression interpreter3 = interpreter(lambda3, context3);
    // Then:
    final Function<Integer, Integer> func1 = (Function<Integer, Integer>) interpreter1.evaluate(ROW);
    assertThat(func1.apply(1), is(2));
    assertThat(func1.apply(2), is(3));
    final BiFunction<Integer, Integer, Integer> func2 = (BiFunction<Integer, Integer, Integer>) interpreter2.evaluate(ROW);
    assertThat(func2.apply(1, 2), is(3));
    assertThat(func2.apply(2, 4), is(6));
    final TriFunction<Integer, Integer, Integer, Integer> func3 = (TriFunction<Integer, Integer, Integer, Integer>) interpreter3.evaluate(ROW);
    assertThat(func3.apply(1, 2, 3), is(6));
    assertThat(func3.apply(2, 4, 6), is(12));
}

Example 18 with LambdaVariable

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

the class ExpressionFormatterTest method shouldFormatLambdaExpression.

@Test
public void shouldFormatLambdaExpression() {
    // Given:
    final LambdaFunctionCall expression = new LambdaFunctionCall(Optional.of(LOCATION), ImmutableList.of("X", "Y"), new LogicalBinaryExpression(LogicalBinaryExpression.Type.OR, new LambdaVariable("X"), new LambdaVariable("Y")));
    // When:
    final String text = ExpressionFormatter.formatExpression(expression);
    // Then:
    assertThat(text, equalTo("(X, Y) => (X OR Y)"));
}