Examples with SqlUserDefinedFunction org.apache.calcite.sql.validate.SqlUserDefinedFunction used on opensource projects

Example 1 with SqlUserDefinedFunction

use of org.apache.calcite.sql.validate.SqlUserDefinedFunction in project beam by apache.

the class SqlOperators method createUdfOperator.

private static SqlUserDefinedFunction createUdfOperator(String name, Method method, final SqlSyntax syntax, String funGroup, String jarPath) {
    Function function = ZetaSqlScalarFunctionImpl.create(method, funGroup, jarPath);
    final RelDataTypeFactory typeFactory = createTypeFactory();
    List<RelDataType> argTypes = new ArrayList<>();
    List<SqlTypeFamily> typeFamilies = new ArrayList<>();
    for (FunctionParameter o : function.getParameters()) {
        final RelDataType type = o.getType(typeFactory);
        argTypes.add(type);
        typeFamilies.add(Util.first(type.getSqlTypeName().getFamily(), SqlTypeFamily.ANY));
    }
    final FamilyOperandTypeChecker typeChecker = OperandTypes.family(typeFamilies, i -> function.getParameters().get(i).isOptional());
    final List<RelDataType> paramTypes = toSql(typeFactory, argTypes);
    return new SqlUserDefinedFunction(new SqlIdentifier(name, SqlParserPos.ZERO), infer((ScalarFunction) function), InferTypes.explicit(argTypes), typeChecker, paramTypes, function) {

        @Override
        public SqlSyntax getSyntax() {
            return syntax;
        }
    };
}

Example 2 with SqlUserDefinedFunction

use of org.apache.calcite.sql.validate.SqlUserDefinedFunction in project beam by apache.

the class BeamCalcRelType method canImplement.

@Override
protected boolean canImplement(RexCall call) {
    final SqlOperator operator = call.getOperator();
    RexImpTable.RexCallImplementor implementor = RexImpTable.INSTANCE.get(operator);
    if (implementor == null) {
        // Reject methods with no implementation
        return false;
    }
    if (operator instanceof SqlUserDefinedFunction) {
        SqlUserDefinedFunction udf = (SqlUserDefinedFunction) call.op;
        if (udf.function instanceof ZetaSqlScalarFunctionImpl) {
            ZetaSqlScalarFunctionImpl scalarFunction = (ZetaSqlScalarFunctionImpl) udf.function;
            if (!scalarFunction.functionGroup.equals(BeamZetaSqlCatalog.USER_DEFINED_JAVA_SCALAR_FUNCTIONS)) {
                // Reject ZetaSQL Builtin Scalar Functions
                return false;
            }
            for (RexNode operand : call.getOperands()) {
                if (operand instanceof RexLocalRef) {
                    if (!supportsType(operand.getType())) {
                        LOG.error("User-defined function {} received unsupported operand type {}.", call.op.getName(), ((RexLocalRef) operand).getType());
                        return false;
                    }
                } else {
                    LOG.error("User-defined function {} received unrecognized operand kind {}.", call.op.getName(), operand.getKind());
                    return false;
                }
            }
        } else {
            // Reject other UDFs
            return false;
        }
    } else {
        // Reject Calcite implementations
        return false;
    }
    return true;
}

Example 3 with SqlUserDefinedFunction

use of org.apache.calcite.sql.validate.SqlUserDefinedFunction in project samza by apache.

the class SamzaSqlUdfOperatorTable method getSqlOperator.

private SqlOperator getSqlOperator(SamzaSqlScalarFunctionImpl scalarFunction, List<UdfMetadata> udfMetadataList) {
    int numArguments = scalarFunction.numberOfArguments();
    UdfMetadata udfMetadata = scalarFunction.getUdfMetadata();
    if (udfMetadata.isDisableArgCheck()) {
        return new SqlUserDefinedFunction(new SqlIdentifier(scalarFunction.getUdfName(), SqlParserPos.ZERO), o -> scalarFunction.getReturnType(o.getTypeFactory()), null, Checker.ANY_CHECKER, null, scalarFunction);
    } else {
        return new SqlUserDefinedFunction(new SqlIdentifier(scalarFunction.getUdfName(), SqlParserPos.ZERO), o -> scalarFunction.getReturnType(o.getTypeFactory()), null, Checker.getChecker(numArguments, numArguments, udfMetadata), null, scalarFunction);
    }
}

Example 4 with SqlUserDefinedFunction

use of org.apache.calcite.sql.validate.SqlUserDefinedFunction in project calcite by apache.

the class CalciteCatalogReader method toOp.

/**
 * Converts a function to a {@link org.apache.calcite.sql.SqlOperator}.
 *
 * <p>The {@code typeFactory} argument is technical debt; see [CALCITE-2082]
 * Remove RelDataTypeFactory argument from SqlUserDefinedAggFunction
 * constructor.
 */
private static SqlOperator toOp(RelDataTypeFactory typeFactory, SqlIdentifier name, final Function function) {
    List<RelDataType> argTypes = new ArrayList<>();
    List<SqlTypeFamily> typeFamilies = new ArrayList<>();
    for (FunctionParameter o : function.getParameters()) {
        final RelDataType type = o.getType(typeFactory);
        argTypes.add(type);
        typeFamilies.add(Util.first(type.getSqlTypeName().getFamily(), SqlTypeFamily.ANY));
    }
    final Predicate<Integer> optional = new PredicateImpl<Integer>() {

        public boolean test(Integer input) {
            return function.getParameters().get(input).isOptional();
        }
    };
    final FamilyOperandTypeChecker typeChecker = OperandTypes.family(typeFamilies, optional);
    final List<RelDataType> paramTypes = toSql(typeFactory, argTypes);
    if (function instanceof ScalarFunction) {
        return new SqlUserDefinedFunction(name, infer((ScalarFunction) function), InferTypes.explicit(argTypes), typeChecker, paramTypes, function);
    } else if (function instanceof AggregateFunction) {
        return new SqlUserDefinedAggFunction(name, infer((AggregateFunction) function), InferTypes.explicit(argTypes), typeChecker, (AggregateFunction) function, false, false, typeFactory);
    } else if (function instanceof TableMacro) {
        return new SqlUserDefinedTableMacro(name, ReturnTypes.CURSOR, InferTypes.explicit(argTypes), typeChecker, paramTypes, (TableMacro) function);
    } else if (function instanceof TableFunction) {
        return new SqlUserDefinedTableFunction(name, ReturnTypes.CURSOR, InferTypes.explicit(argTypes), typeChecker, paramTypes, (TableFunction) function);
    } else {
        throw new AssertionError("unknown function type " + function);
    }
}