Examples with NumericExpression org.datanucleus.store.rdbms.sql.expression.NumericExpression used on opensource projects

Example 61 with NumericExpression

use of org.datanucleus.store.rdbms.sql.expression.NumericExpression in project datanucleus-rdbms by datanucleus.

the class NullIfFunction method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    if (expr == null) {
        // Find expression type that this handles - all expressions need to be consistent in our implementation
        Class exprType = null;
        Class cls = Integer.class;
        int clsLevel = 0;
        // Priority order is Double, Float, BigDecimal, BigInteger, Long, Integer
        for (int i = 0; i < args.size(); i++) {
            SQLExpression argExpr = args.get(i);
            if (exprType == null) {
                if (argExpr instanceof NumericExpression) {
                    exprType = NumericExpression.class;
                    cls = Integer.class;
                } else if (argExpr instanceof StringExpression) {
                    exprType = StringExpression.class;
                    cls = String.class;
                } else if (argExpr instanceof TemporalExpression) {
                    exprType = TemporalExpression.class;
                    cls = argExpr.getJavaTypeMapping().getJavaType();
                } else {
                    exprType = argExpr.getClass();
                    cls = argExpr.getJavaTypeMapping().getJavaType();
                }
            } else {
                if (!exprType.isAssignableFrom(argExpr.getClass())) {
                    throw new NucleusUserException("NULLIF invocation first argument of type " + exprType.getName() + " yet subsequent argument of type " + argExpr.getClass().getName());
                }
            }
            if (exprType == NumericExpression.class) {
                // Priority order is Double, Float, BigDecimal, BigInteger, Long, Integer
                Class argType = argExpr.getJavaTypeMapping().getJavaType();
                if (clsLevel < 5 && (argType == double.class || argType == Double.class)) {
                    cls = Double.class;
                    clsLevel = 5;
                } else if (clsLevel < 4 && (argType == float.class || argType == Float.class)) {
                    cls = Float.class;
                    clsLevel = 4;
                } else if (clsLevel < 3 && argType == BigDecimal.class) {
                    cls = BigDecimal.class;
                    clsLevel = 3;
                } else if (clsLevel < 2 && argType == BigInteger.class) {
                    cls = BigInteger.class;
                    clsLevel = 2;
                } else if (clsLevel < 1 && (argType == long.class || argType == Long.class)) {
                    cls = Long.class;
                    clsLevel = 1;
                }
            }
        }
        if (exprType == NumericExpression.class) {
            return new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(cls, true), "NULLIF", args);
        } else if (exprType == StringExpression.class) {
            return new StringExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(cls, true), "NULLIF", args);
        } else if (exprType == TemporalExpression.class) {
            return new TemporalExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(cls, true), "NULLIF", args);
        } else {
            return new ObjectExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(cls, true), "NULLIF", args);
        }
    }
    throw new NucleusException(Localiser.msg("060002", "NULLIF", expr));
}

Example 62 with NumericExpression

use of org.datanucleus.store.rdbms.sql.expression.NumericExpression in project datanucleus-rdbms by datanucleus.

the class StringIndexOf4Method method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    if (args == null || args.size() == 0 || args.size() > 2) {
        throw new NucleusException(Localiser.msg("060003", "indexOf", "StringExpression", 0, "StringExpression/CharacterExpression/ParameterLiteral"));
    }
    // {stringExpr}.indexOf(strExpr1 [,numExpr2])
    SQLExpression one = ExpressionUtils.getLiteralForOne(stmt);
    ArrayList funcArgs = new ArrayList();
    SQLExpression substrExpr = args.get(0);
    if (!(substrExpr instanceof StringExpression) && !(substrExpr instanceof CharacterExpression) && !(substrExpr instanceof ParameterLiteral)) {
        throw new NucleusException(Localiser.msg("060003", "indexOf", "StringExpression", 0, "StringExpression/CharacterExpression/ParameterLiteral"));
    }
    funcArgs.add(substrExpr);
    funcArgs.add(expr);
    if (args.size() == 2) {
        SQLExpression fromExpr = args.get(1);
        if (!(fromExpr instanceof NumericExpression)) {
            throw new NucleusException(Localiser.msg("060003", "indexOf", "StringExpression", 1, "NumericExpression"));
        }
        // Add 1 to the passed in value so that it is of origin 1 to be compatible with CHARINDEX
        funcArgs.add(new NumericExpression(fromExpr, Expression.OP_ADD, one));
    }
    // Subtract 1 from the result of CHARINDEX to be consistent with Java strings
    NumericExpression locateExpr = new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class, true), "CHARINDEX", funcArgs);
    return new NumericExpression(locateExpr, Expression.OP_SUB, one).encloseInParentheses();
}

Example 63 with NumericExpression

use of org.datanucleus.store.rdbms.sql.expression.NumericExpression in project datanucleus-rdbms by datanucleus.

the class StringLength4Method method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    if (!expr.isParameter() && expr instanceof StringLiteral) {
        SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
        JavaTypeMapping m = exprFactory.getMappingForType(int.class, false);
        String val = (String) ((StringLiteral) expr).getValue();
        return new IntegerLiteral(stmt, m, Integer.valueOf(val.length()), null);
    } else if (expr instanceof StringExpression || expr instanceof ParameterLiteral) {
        ArrayList funcArgs = new ArrayList();
        funcArgs.add(expr);
        return new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "LEN", funcArgs);
    } else {
        throw new NucleusException(Localiser.msg("060001", "length", expr));
    }
}

Example 64 with NumericExpression

use of org.datanucleus.store.rdbms.sql.expression.NumericExpression in project datanucleus-rdbms by datanucleus.

the class StringLengthMethod method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    if (!expr.isParameter() && expr instanceof StringLiteral) {
        SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
        JavaTypeMapping m = exprFactory.getMappingForType(int.class, false);
        String val = (String) ((StringLiteral) expr).getValue();
        return new IntegerLiteral(stmt, m, Integer.valueOf(val.length()), null);
    } else if (expr instanceof StringExpression || expr instanceof ParameterLiteral) {
        ArrayList funcArgs = new ArrayList();
        funcArgs.add(expr);
        return new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "CHAR_LENGTH", funcArgs);
    } else {
        throw new NucleusException(Localiser.msg("060001", "length", expr));
    }
}

Example 65 with NumericExpression

use of org.datanucleus.store.rdbms.sql.expression.NumericExpression in project datanucleus-rdbms by datanucleus.

the class StringMatchesDerbyMethod method getExpressionForStringExpressionInput.

protected BooleanExpression getExpressionForStringExpressionInput(SQLStatement stmt, SQLExpression expr, SQLExpression argExpr, SQLExpression escapeExpr) {
    // Use Derby "NUCLEUS_MATCHES" function
    List funcArgs = new ArrayList();
    funcArgs.add(expr);
    funcArgs.add(argExpr);
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    JavaTypeMapping m = exprFactory.getMappingForType(BigInteger.class, false);
    SQLExpression one = ExpressionUtils.getLiteralForOne(stmt);
    return new NumericExpression(stmt, m, "NUCLEUS_MATCHES", funcArgs).eq(one);
}