Examples with MULTIPLY com.facebook.presto.spi.function.OperatorType.MULTIPLY used on opensource projects

Example 1 with MULTIPLY

use of com.facebook.presto.spi.function.OperatorType.MULTIPLY in project presto by prestodb.

the class DecimalOperators method decimalMultiplyOperator.

private static SqlScalarFunction decimalMultiplyOperator() {
    TypeSignature decimalLeftSignature = parseTypeSignature("decimal(a_precision, a_scale)", ImmutableSet.of("a_precision", "a_scale"));
    TypeSignature decimalRightSignature = parseTypeSignature("decimal(b_precision, b_scale)", ImmutableSet.of("b_precision", "b_scale"));
    TypeSignature decimalResultSignature = parseTypeSignature("decimal(r_precision, r_scale)", ImmutableSet.of("r_precision", "r_scale"));
    Signature signature = Signature.builder().kind(SCALAR).operatorType(MULTIPLY).longVariableConstraints(longVariableExpression("r_precision", "min(38, a_precision + b_precision)"), longVariableExpression("r_scale", "a_scale + b_scale")).argumentTypes(decimalLeftSignature, decimalRightSignature).returnType(decimalResultSignature).build();
    return SqlScalarFunction.builder(DecimalOperators.class).signature(signature).implementation(b -> b.methods("multiplyShortShortShort", "multiplyShortShortLong", "multiplyLongLongLong", "multiplyShortLongLong", "multiplyLongShortLong")).build();
}