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

Example 6 with CharacterExpression

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

the class StringStartsWithMethod 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", "startsWith", "StringExpression", 0, "StringExpression/CharacterExpression/Parameter"));
    }
    SQLExpression substrExpr = args.get(0);
    if (!(substrExpr instanceof StringExpression) && !(substrExpr instanceof CharacterExpression) && !(substrExpr instanceof ParameterLiteral)) {
        throw new NucleusException(Localiser.msg("060003", "startsWith", "StringExpression", 0, "StringExpression/CharacterExpression/Parameter"));
    }
    if (args.size() > 1) {
        // TODO Use numExpr in a SUBSTRING
        if (substrExpr.isParameter()) {
            // Any pattern expression cannot be a parameter here
            SQLLiteral substrLit = (SQLLiteral) substrExpr;
            stmt.getQueryGenerator().useParameterExpressionAsLiteral(substrLit);
            if (substrLit.getValue() == null) {
                return new BooleanExpression(expr, Expression.OP_LIKE, ExpressionUtils.getEscapedPatternExpression(substrExpr));
            }
        }
        SQLExpression likeSubstrExpr = new StringLiteral(stmt, expr.getJavaTypeMapping(), '%', null);
        return new BooleanExpression(expr, Expression.OP_LIKE, ExpressionUtils.getEscapedPatternExpression(substrExpr).add(likeSubstrExpr));
    }
    // Create a new StringExpression and manually update its SQL
    if (substrExpr.isParameter()) {
        // Any pattern expression cannot be a parameter here
        SQLLiteral substrLit = (SQLLiteral) substrExpr;
        stmt.getQueryGenerator().useParameterExpressionAsLiteral(substrLit);
        if (substrLit.getValue() == null) {
            return new BooleanExpression(expr, Expression.OP_LIKE, ExpressionUtils.getEscapedPatternExpression(substrExpr));
        }
    }
    SQLExpression likeSubstrExpr = new StringLiteral(stmt, expr.getJavaTypeMapping(), '%', null);
    return new BooleanExpression(expr, Expression.OP_LIKE, ExpressionUtils.getEscapedPatternExpression(substrExpr).add(likeSubstrExpr));
}

Example 7 with CharacterExpression

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

the class StringConcat1Method 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() != 1) {
        throw new NucleusException(Localiser.msg("060003", "concat", "StringExpression", 0, "StringExpression/CharacterExpression/Parameter"));
    }
    SQLExpression otherExpr = args.get(0);
    if (!(otherExpr instanceof StringExpression) && !(otherExpr instanceof CharacterExpression) && !(otherExpr instanceof ParameterLiteral)) {
        throw new NucleusException(Localiser.msg("060003", "concat", "StringExpression", 0, "StringExpression/CharacterExpression/Parameter"));
    }
    ArrayList funcArgs = new ArrayList();
    funcArgs.add(expr);
    funcArgs.add(otherExpr);
    return new StringExpression(expr, Expression.OP_CONCAT, otherExpr);
}

Example 8 with CharacterExpression

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

the class StringConcat2Method 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() != 1) {
        throw new NucleusException(Localiser.msg("060003", "concat", "StringExpression", 0, "StringExpression/CharacterExpression/Parameter"));
    }
    SQLExpression otherExpr = args.get(0);
    if (!(otherExpr instanceof StringExpression) && !(otherExpr instanceof CharacterExpression) && !(otherExpr instanceof ParameterLiteral)) {
        throw new NucleusException(Localiser.msg("060003", "concat", "StringExpression", 0, "StringExpression/CharacterExpression/Parameter"));
    }
    ArrayList funcArgs = new ArrayList();
    funcArgs.add(expr);
    funcArgs.add(otherExpr);
    return new StringExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(String.class), "CONCAT", funcArgs);
}

Example 9 with CharacterExpression

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

the class StringEndsWithMethod 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", "endsWith", "StringExpression", 0, "StringExpression/CharacterExpression/ParameterLiteral"));
    }
    SQLExpression substrExpr = args.get(0);
    if (!(substrExpr instanceof StringExpression) && !(substrExpr instanceof CharacterExpression) && !(substrExpr instanceof ParameterLiteral)) {
        throw new NucleusException(Localiser.msg("060003", "endsWith", "StringExpression", 0, "StringExpression/CharacterExpression/ParameterLiteral"));
    }
    if (args.size() > 1) {
        // TODO Use numExpr in a SUBSTRING
        if (substrExpr.isParameter()) {
            // Any pattern expression cannot be a parameter here
            SQLLiteral substrLit = (SQLLiteral) substrExpr;
            stmt.getQueryGenerator().useParameterExpressionAsLiteral(substrLit);
            if (substrLit.getValue() == null) {
                return new BooleanExpression(expr, Expression.OP_LIKE, ExpressionUtils.getEscapedPatternExpression(substrExpr));
            }
        }
        SQLExpression likeSubstrExpr = new StringLiteral(stmt, expr.getJavaTypeMapping(), '%', null);
        return new BooleanExpression(expr, Expression.OP_LIKE, likeSubstrExpr.add(ExpressionUtils.getEscapedPatternExpression(substrExpr)));
    }
    // Create a new StringExpression and manually update its SQL
    if (substrExpr.isParameter()) {
        // Any pattern expression cannot be a parameter here
        SQLLiteral substrLit = (SQLLiteral) substrExpr;
        stmt.getQueryGenerator().useParameterExpressionAsLiteral(substrLit);
        if (substrLit.getValue() == null) {
            return new BooleanExpression(expr, Expression.OP_LIKE, ExpressionUtils.getEscapedPatternExpression(substrExpr));
        }
    }
    SQLExpression likeSubstrExpr = new StringLiteral(stmt, expr.getJavaTypeMapping(), '%', null);
    return new BooleanExpression(expr, Expression.OP_LIKE, likeSubstrExpr.add(ExpressionUtils.getEscapedPatternExpression(substrExpr)));
}

Example 10 with CharacterExpression

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

the class StringIndexOf2Method 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 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"));
    }
    SQLExpression one = ExpressionUtils.getLiteralForOne(stmt);
    ArrayList funcArgs = new ArrayList();
    funcArgs.add(expr);
    funcArgs.add(substrExpr);
    if (args.size() == 2) {
        SQLExpression fromExpr = args.get(1);
        if (!(fromExpr instanceof NumericExpression)) {
            throw new NucleusException(Localiser.msg("060003", "indexOf", "StringExpression", 1, "NumericExpression"));
        }
        funcArgs.add(fromExpr.add(one));
    }
    NumericExpression locateExpr = new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "INSTR", funcArgs);
    return new NumericExpression(locateExpr, Expression.OP_SUB, one).encloseInParentheses();
}