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

Example 21 with ParameterLiteral

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

the class QueryToSQLMapper method processSubExpression.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.AbstractExpressionEvaluator#processSubExpression(org.datanucleus.query.expression.Expression)
     */
protected Object processSubExpression(Expression expr) {
    SQLExpression right = stack.pop();
    SQLExpression left = stack.pop();
    if (left instanceof ParameterLiteral && !(right instanceof ParameterLiteral)) {
        left = replaceParameterLiteral((ParameterLiteral) left, right.getJavaTypeMapping());
    } else if (right instanceof ParameterLiteral && !(left instanceof ParameterLiteral)) {
        right = replaceParameterLiteral((ParameterLiteral) right, left.getJavaTypeMapping());
    }
    SQLExpression resultExpr = left.sub(right);
    stack.push(resultExpr);
    return resultExpr;
}

Example 22 with ParameterLiteral

use of org.datanucleus.store.rdbms.sql.expression.ParameterLiteral 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 23 with ParameterLiteral

use of org.datanucleus.store.rdbms.sql.expression.ParameterLiteral 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 24 with ParameterLiteral

use of org.datanucleus.store.rdbms.sql.expression.ParameterLiteral 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 25 with ParameterLiteral

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

the class StringMatchesMethod 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() > 2) {
        throw new NucleusException("Incorrect arguments for String.matches(StringExpression)");
    } else if (!(args.get(0) instanceof StringExpression) && !(args.get(0) instanceof ParameterLiteral)) {
        throw new NucleusException("Incorrect arguments for String.matches(StringExpression)");
    }
    SQLExpression likeExpr = args.get(0);
    if (!(likeExpr instanceof StringExpression) && !(likeExpr instanceof CharacterExpression) && !(likeExpr instanceof ParameterLiteral)) {
        throw new NucleusException(Localiser.msg("060003", "like/matches", "StringExpression", 0, "StringExpression/CharacterExpression/ParameterLiteral"));
    }
    SQLExpression escapeExpr = null;
    if (args.size() > 1) {
        escapeExpr = args.get(1);
    }
    if ((likeExpr instanceof StringLiteral || likeExpr instanceof ParameterLiteral) && likeExpr.isParameter()) {
        // Argument as parameter needs translation to use SQL "LIKE" syntax, so has to be embedded as literal
        stmt.getQueryGenerator().useParameterExpressionAsLiteral((SQLLiteral) likeExpr);
    }
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    if (expr instanceof StringLiteral && likeExpr instanceof StringLiteral) {
        // String.matches(String) so evaluate in-memory
        String primary = (String) ((StringLiteral) expr).getValue();
        String pattern = (String) ((StringLiteral) likeExpr).getValue();
        return new BooleanLiteral(stmt, exprFactory.getMappingForType(boolean.class, false), primary.matches(pattern));
    } else if (expr instanceof StringLiteral) {
        return getBooleanLikeExpression(stmt, expr, likeExpr, escapeExpr);
    } else if (expr instanceof StringExpression && likeExpr instanceof StringLiteral) {
        // Convert the pattern to use the regex constructs suitable for the datastore
        String pattern = (String) ((StringLiteral) likeExpr).getValue();
        if (stmt.getQueryGenerator().getQueryLanguage().equalsIgnoreCase(Query.LANGUAGE_JDOQL)) {
            // JDOQL input is in java.lang.String regular expression format, so convert to SQL like
            boolean caseSensitive = false;
            if (pattern.startsWith("(?i)")) {
                caseSensitive = true;
                pattern = pattern.substring(4);
            }
            DatastoreAdapter dba = stmt.getDatastoreAdapter();
            RegularExpressionConverter converter = new RegularExpressionConverter(dba.getPatternExpressionZeroMoreCharacters().charAt(0), dba.getPatternExpressionAnyCharacter().charAt(0), dba.getEscapeCharacter().charAt(0));
            if (caseSensitive) {
                SQLExpression patternExpr = exprFactory.newLiteral(stmt, likeExpr.getJavaTypeMapping(), converter.convert(pattern).toLowerCase());
                return getBooleanLikeExpression(stmt, expr.invoke("toLowerCase", null), patternExpr, escapeExpr);
            }
            SQLExpression patternExpr = exprFactory.newLiteral(stmt, likeExpr.getJavaTypeMapping(), converter.convert(pattern));
            return getBooleanLikeExpression(stmt, expr, patternExpr, escapeExpr);
        }
        SQLExpression patternExpr = exprFactory.newLiteral(stmt, likeExpr.getJavaTypeMapping(), pattern);
        return getBooleanLikeExpression(stmt, expr, patternExpr, escapeExpr);
    } else if (expr instanceof StringExpression) {
        return getExpressionForStringExpressionInput(stmt, expr, likeExpr, escapeExpr);
    } else {
        throw new NucleusException(Localiser.msg("060001", "matches", expr));
    }
}