Examples with Window io.confluent.ksql.parser.tree.Window used on opensource projects

Example 1 with Window

use of io.confluent.ksql.parser.tree.Window in project ksql by confluentinc.

the class AstBuilder method visitFunctionCall.

@Override
public Node visitFunctionCall(SqlBaseParser.FunctionCallContext context) {
    Optional<Window> window = visitIfPresent(context.over(), Window.class);
    QualifiedName name = getQualifiedName(context.qualifiedName());
    boolean distinct = false;
    if (name.toString().equals("NULLIF")) {
        check(context.expression().size() == 2, "Invalid number of arguments for 'nullif' function", context);
        check(!window.isPresent(), "OVER clause not valid for 'nullif' function", context);
        check(!distinct, "DISTINCT not valid for 'nullif' function", context);
        return new NullIfExpression(getLocation(context), (Expression) visit(context.expression(0)), (Expression) visit(context.expression(1)));
    }
    return new FunctionCall(getLocation(context), getQualifiedName(context.qualifiedName()), window, distinct, visit(context.expression(), Expression.class));
}

Example 2 with Window

use of io.confluent.ksql.parser.tree.Window in project ksql by confluentinc.

the class ExpressionFormatterTest method shouldFormatFunctionCallWithWindow.

@Test
public void shouldFormatFunctionCallWithWindow() {
    final FunctionCall functionCall = new FunctionCall(new NodeLocation(1, 1), QualifiedName.of("function"), Optional.of(new Window("window", new WindowExpression("blah", new TumblingWindowExpression(1L, TimeUnit.SECONDS)))), false, Collections.singletonList(new StringLiteral("name")));
    assertThat(ExpressionFormatter.formatExpression(functionCall), equalTo("function('name') OVER  WINDOW  WINDOW blah  TUMBLING ( SIZE 1 SECONDS ) "));
}