Examples with SequenceValue org.h2.expression.SequenceValue used on opensource projects

Example 1 with SequenceValue

use of org.h2.expression.SequenceValue in project h2database by h2database.

the class Parser method readTerm.

private Expression readTerm() {
    Expression r;
    switch(currentTokenType) {
        case AT:
            read();
            r = new Variable(session, readAliasIdentifier());
            if (readIf(":=")) {
                Expression value = readExpression();
                Function function = Function.getFunction(database, "SET");
                function.setParameter(0, r);
                function.setParameter(1, value);
                r = function;
            }
            break;
        case PARAMETER:
            r = readParameter();
            break;
        case KEYWORD:
            if (isToken("SELECT") || isToken("FROM") || isToken("WITH")) {
                Query query = parseSelect();
                r = new Subquery(query);
            } else {
                throw getSyntaxError();
            }
            break;
        case IDENTIFIER:
            String name = currentToken;
            if (currentTokenQuoted) {
                read();
                if (readIf("(")) {
                    r = readFunction(null, name);
                } else if (readIf(".")) {
                    r = readTermObjectDot(name);
                } else {
                    r = new ExpressionColumn(database, null, null, name);
                }
            } else {
                read();
                if (readIf(".")) {
                    r = readTermObjectDot(name);
                } else if (equalsToken("CASE", name)) {
                    // CASE must be processed before (,
                    // otherwise CASE(3) would be a function call, which it is
                    // not
                    r = readCase();
                } else if (readIf("(")) {
                    r = readFunction(null, name);
                } else if (equalsToken("CURRENT_USER", name)) {
                    r = readFunctionWithoutParameters("USER");
                } else if (equalsToken("CURRENT_TIMESTAMP", name)) {
                    r = readFunctionWithoutParameters("CURRENT_TIMESTAMP");
                } else if (equalsToken("SYSDATE", name)) {
                    r = readFunctionWithoutParameters("CURRENT_TIMESTAMP");
                } else if (equalsToken("SYSTIMESTAMP", name)) {
                    r = readFunctionWithoutParameters("CURRENT_TIMESTAMP");
                } else if (equalsToken("CURRENT_DATE", name)) {
                    r = readFunctionWithoutParameters("CURRENT_DATE");
                } else if (equalsToken("TODAY", name)) {
                    r = readFunctionWithoutParameters("CURRENT_DATE");
                } else if (equalsToken("CURRENT_TIME", name)) {
                    r = readFunctionWithoutParameters("CURRENT_TIME");
                } else if (equalsToken("SYSTIME", name)) {
                    r = readFunctionWithoutParameters("CURRENT_TIME");
                } else if (equalsToken("CURRENT", name)) {
                    if (readIf("TIMESTAMP")) {
                        r = readFunctionWithoutParameters("CURRENT_TIMESTAMP");
                    } else if (readIf("TIME")) {
                        r = readFunctionWithoutParameters("CURRENT_TIME");
                    } else if (readIf("DATE")) {
                        r = readFunctionWithoutParameters("CURRENT_DATE");
                    } else {
                        r = new ExpressionColumn(database, null, null, name);
                    }
                } else if (equalsToken("NEXT", name) && readIf("VALUE")) {
                    read("FOR");
                    Sequence sequence = readSequence();
                    r = new SequenceValue(sequence);
                } else if (equalsToken("TIME", name)) {
                    boolean without = readIf("WITHOUT");
                    if (without) {
                        read("TIME");
                        read("ZONE");
                    }
                    if (currentTokenType != VALUE || currentValue.getType() != Value.STRING) {
                        if (without) {
                            throw getSyntaxError();
                        }
                        r = new ExpressionColumn(database, null, null, name);
                    } else {
                        String time = currentValue.getString();
                        read();
                        r = ValueExpression.get(ValueTime.parse(time));
                    }
                } else if (equalsToken("TIMESTAMP", name)) {
                    if (readIf("WITH")) {
                        read("TIME");
                        read("ZONE");
                        if (currentTokenType != VALUE || currentValue.getType() != Value.STRING) {
                            throw getSyntaxError();
                        }
                        String timestamp = currentValue.getString();
                        read();
                        r = ValueExpression.get(ValueTimestampTimeZone.parse(timestamp));
                    } else {
                        boolean without = readIf("WITHOUT");
                        if (without) {
                            read("TIME");
                            read("ZONE");
                        }
                        if (currentTokenType != VALUE || currentValue.getType() != Value.STRING) {
                            if (without) {
                                throw getSyntaxError();
                            }
                            r = new ExpressionColumn(database, null, null, name);
                        } else {
                            String timestamp = currentValue.getString();
                            read();
                            r = ValueExpression.get(ValueTimestamp.parse(timestamp, database.getMode()));
                        }
                    }
                } else if (currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
                    if (equalsToken("DATE", name) || equalsToken("D", name)) {
                        String date = currentValue.getString();
                        read();
                        r = ValueExpression.get(ValueDate.parse(date));
                    } else if (equalsToken("T", name)) {
                        String time = currentValue.getString();
                        read();
                        r = ValueExpression.get(ValueTime.parse(time));
                    } else if (equalsToken("TS", name)) {
                        String timestamp = currentValue.getString();
                        read();
                        r = ValueExpression.get(ValueTimestamp.parse(timestamp, database.getMode()));
                    } else if (equalsToken("X", name)) {
                        read();
                        byte[] buffer = StringUtils.convertHexToBytes(currentValue.getString());
                        r = ValueExpression.get(ValueBytes.getNoCopy(buffer));
                    } else if (equalsToken("E", name)) {
                        String text = currentValue.getString();
                        // the PostgreSQL ODBC driver uses
                        // LIKE E'PROJECT\\_DATA' instead of LIKE
                        // 'PROJECT\_DATA'
                        // N: SQL-92 "National Language" strings
                        text = StringUtils.replaceAll(text, "\\\\", "\\");
                        read();
                        r = ValueExpression.get(ValueString.get(text));
                    } else if (equalsToken("N", name)) {
                        // SQL-92 "National Language" strings
                        String text = currentValue.getString();
                        read();
                        r = ValueExpression.get(ValueString.get(text));
                    } else {
                        r = new ExpressionColumn(database, null, null, name);
                    }
                } else {
                    r = new ExpressionColumn(database, null, null, name);
                }
            }
            break;
        case MINUS:
            read();
            if (currentTokenType == VALUE) {
                r = ValueExpression.get(currentValue.negate());
                if (r.getType() == Value.LONG && r.getValue(session).getLong() == Integer.MIN_VALUE) {
                    // convert Integer.MIN_VALUE to type 'int'
                    // (Integer.MAX_VALUE+1 is of type 'long')
                    r = ValueExpression.get(ValueInt.get(Integer.MIN_VALUE));
                } else if (r.getType() == Value.DECIMAL && r.getValue(session).getBigDecimal().compareTo(ValueLong.MIN_BD) == 0) {
                    // convert Long.MIN_VALUE to type 'long'
                    // (Long.MAX_VALUE+1 is of type 'decimal')
                    r = ValueExpression.get(ValueLong.MIN);
                }
                read();
            } else {
                r = new Operation(OpType.NEGATE, readTerm(), null);
            }
            break;
        case PLUS:
            read();
            r = readTerm();
            break;
        case OPEN:
            read();
            if (readIf(")")) {
                r = new ExpressionList(new Expression[0]);
            } else {
                r = readExpression();
                if (readIf(",")) {
                    ArrayList<Expression> list = New.arrayList();
                    list.add(r);
                    while (!readIf(")")) {
                        r = readExpression();
                        list.add(r);
                        if (!readIf(",")) {
                            read(")");
                            break;
                        }
                    }
                    r = new ExpressionList(list.toArray(new Expression[0]));
                } else {
                    read(")");
                }
            }
            break;
        case TRUE:
            read();
            r = ValueExpression.get(ValueBoolean.TRUE);
            break;
        case FALSE:
            read();
            r = ValueExpression.get(ValueBoolean.FALSE);
            break;
        case ROWNUM:
            read();
            if (readIf("(")) {
                read(")");
            }
            if (currentSelect == null && currentPrepared == null) {
                throw getSyntaxError();
            }
            r = new Rownum(currentSelect == null ? currentPrepared : currentSelect);
            break;
        case NULL:
            read();
            r = ValueExpression.getNull();
            break;
        case VALUE:
            r = ValueExpression.get(currentValue);
            read();
            break;
        default:
            throw getSyntaxError();
    }
    if (readIf("[")) {
        Function function = Function.getFunction(database, "ARRAY_GET");
        function.setParameter(0, r);
        r = readExpression();
        r = new Operation(OpType.PLUS, r, ValueExpression.get(ValueInt.get(1)));
        function.setParameter(1, r);
        r = function;
        read("]");
    }
    if (readIf("::")) {
        // PostgreSQL compatibility
        if (isToken("PG_CATALOG")) {
            read("PG_CATALOG");
            read(".");
        }
        if (readIf("REGCLASS")) {
            FunctionAlias f = findFunctionAlias(Constants.SCHEMA_MAIN, "PG_GET_OID");
            if (f == null) {
                throw getSyntaxError();
            }
            Expression[] args = { r };
            r = new JavaFunction(f, args);
        } else {
            Column col = parseColumnWithType(null);
            Function function = Function.getFunction(database, "CAST");
            function.setDataType(col);
            function.setParameter(0, r);
            r = function;
        }
    }
    return r;
}

Example 2 with SequenceValue

use of org.h2.expression.SequenceValue in project h2database by h2database.

the class Function method getValueWithArgs.

private Value getValueWithArgs(Session session, Expression[] args) {
    Value[] values = new Value[args.length];
    if (info.nullIfParameterIsNull) {
        for (int i = 0; i < args.length; i++) {
            Expression e = args[i];
            Value v = e.getValue(session);
            if (v == ValueNull.INSTANCE) {
                return ValueNull.INSTANCE;
            }
            values[i] = v;
        }
    }
    Value v0 = getNullOrValue(session, args, values, 0);
    Value resultSimple = getSimpleValue(session, v0, args, values);
    if (resultSimple != null) {
        return resultSimple;
    }
    Value v1 = getNullOrValue(session, args, values, 1);
    Value v2 = getNullOrValue(session, args, values, 2);
    Value v3 = getNullOrValue(session, args, values, 3);
    Value v4 = getNullOrValue(session, args, values, 4);
    Value v5 = getNullOrValue(session, args, values, 5);
    Value result;
    switch(info.type) {
        case ATAN2:
            result = ValueDouble.get(Math.atan2(v0.getDouble(), v1.getDouble()));
            break;
        case BITAND:
            result = ValueLong.get(v0.getLong() & v1.getLong());
            break;
        case BITGET:
            result = ValueBoolean.get((v0.getLong() & (1L << v1.getInt())) != 0);
            break;
        case BITOR:
            result = ValueLong.get(v0.getLong() | v1.getLong());
            break;
        case BITXOR:
            result = ValueLong.get(v0.getLong() ^ v1.getLong());
            break;
        case MOD:
            {
                long x = v1.getLong();
                if (x == 0) {
                    throw DbException.get(ErrorCode.DIVISION_BY_ZERO_1, getSQL());
                }
                result = ValueLong.get(v0.getLong() % x);
                break;
            }
        case POWER:
            result = ValueDouble.get(Math.pow(v0.getDouble(), v1.getDouble()));
            break;
        case ROUND:
            {
                double f = v1 == null ? 1. : Math.pow(10., v1.getDouble());
                double middleResult = v0.getDouble() * f;
                int oneWithSymbol = middleResult > 0 ? 1 : -1;
                result = ValueDouble.get(Math.round(Math.abs(middleResult)) / f * oneWithSymbol);
                break;
            }
        case TRUNCATE:
            {
                if (v0.getType() == Value.TIMESTAMP) {
                    result = ValueTimestamp.fromDateValueAndNanos(((ValueTimestamp) v0).getDateValue(), 0);
                } else if (v0.getType() == Value.DATE) {
                    result = ValueTimestamp.fromDateValueAndNanos(((ValueDate) v0).getDateValue(), 0);
                } else if (v0.getType() == Value.TIMESTAMP_TZ) {
                    ValueTimestampTimeZone ts = (ValueTimestampTimeZone) v0;
                    result = ValueTimestampTimeZone.fromDateValueAndNanos(ts.getDateValue(), 0, ts.getTimeZoneOffsetMins());
                } else if (v0.getType() == Value.STRING) {
                    ValueTimestamp ts = ValueTimestamp.parse(v0.getString(), session.getDatabase().getMode());
                    result = ValueTimestamp.fromDateValueAndNanos(ts.getDateValue(), 0);
                } else {
                    double d = v0.getDouble();
                    int p = v1 == null ? 0 : v1.getInt();
                    double f = Math.pow(10., p);
                    double g = d * f;
                    result = ValueDouble.get(((d < 0) ? Math.ceil(g) : Math.floor(g)) / f);
                }
                break;
            }
        case HASH:
            result = ValueBytes.getNoCopy(getHash(v0.getString(), v1.getBytesNoCopy(), v2.getInt()));
            break;
        case ENCRYPT:
            result = ValueBytes.getNoCopy(encrypt(v0.getString(), v1.getBytesNoCopy(), v2.getBytesNoCopy()));
            break;
        case DECRYPT:
            result = ValueBytes.getNoCopy(decrypt(v0.getString(), v1.getBytesNoCopy(), v2.getBytesNoCopy()));
            break;
        case COMPRESS:
            {
                String algorithm = null;
                if (v1 != null) {
                    algorithm = v1.getString();
                }
                result = ValueBytes.getNoCopy(CompressTool.getInstance().compress(v0.getBytesNoCopy(), algorithm));
                break;
            }
        case DIFFERENCE:
            result = ValueInt.get(getDifference(v0.getString(), v1.getString()));
            break;
        case INSERT:
            {
                if (v1 == ValueNull.INSTANCE || v2 == ValueNull.INSTANCE) {
                    result = v1;
                } else {
                    result = ValueString.get(insert(v0.getString(), v1.getInt(), v2.getInt(), v3.getString()), database.getMode().treatEmptyStringsAsNull);
                }
                break;
            }
        case LEFT:
            result = ValueString.get(left(v0.getString(), v1.getInt()), database.getMode().treatEmptyStringsAsNull);
            break;
        case LOCATE:
            {
                int start = v2 == null ? 0 : v2.getInt();
                result = ValueInt.get(locate(v0.getString(), v1.getString(), start));
                break;
            }
        case INSTR:
            {
                int start = v2 == null ? 0 : v2.getInt();
                result = ValueInt.get(locate(v1.getString(), v0.getString(), start));
                break;
            }
        case REPEAT:
            {
                int count = Math.max(0, v1.getInt());
                result = ValueString.get(repeat(v0.getString(), count), database.getMode().treatEmptyStringsAsNull);
                break;
            }
        case REPLACE:
            {
                if (v0 == ValueNull.INSTANCE || v1 == ValueNull.INSTANCE || v2 == ValueNull.INSTANCE && database.getMode().getEnum() != Mode.ModeEnum.Oracle) {
                    result = ValueNull.INSTANCE;
                } else {
                    String s0 = v0.getString();
                    String s1 = v1.getString();
                    String s2 = (v2 == null) ? "" : v2.getString();
                    if (s2 == null) {
                        s2 = "";
                    }
                    result = ValueString.get(StringUtils.replaceAll(s0, s1, s2), database.getMode().treatEmptyStringsAsNull);
                }
                break;
            }
        case RIGHT:
            result = ValueString.get(right(v0.getString(), v1.getInt()), database.getMode().treatEmptyStringsAsNull);
            break;
        case LTRIM:
            result = ValueString.get(StringUtils.trim(v0.getString(), true, false, v1 == null ? " " : v1.getString()), database.getMode().treatEmptyStringsAsNull);
            break;
        case TRIM:
            result = ValueString.get(StringUtils.trim(v0.getString(), true, true, v1 == null ? " " : v1.getString()), database.getMode().treatEmptyStringsAsNull);
            break;
        case RTRIM:
            result = ValueString.get(StringUtils.trim(v0.getString(), false, true, v1 == null ? " " : v1.getString()), database.getMode().treatEmptyStringsAsNull);
            break;
        case SUBSTR:
        case SUBSTRING:
            {
                String s = v0.getString();
                int offset = v1.getInt();
                if (offset < 0) {
                    offset = s.length() + offset + 1;
                }
                int length = v2 == null ? s.length() : v2.getInt();
                result = ValueString.get(substring(s, offset, length), database.getMode().treatEmptyStringsAsNull);
                break;
            }
        case POSITION:
            result = ValueInt.get(locate(v0.getString(), v1.getString(), 0));
            break;
        case XMLATTR:
            result = ValueString.get(StringUtils.xmlAttr(v0.getString(), v1.getString()), database.getMode().treatEmptyStringsAsNull);
            break;
        case XMLNODE:
            {
                String attr = v1 == null ? null : v1 == ValueNull.INSTANCE ? null : v1.getString();
                String content = v2 == null ? null : v2 == ValueNull.INSTANCE ? null : v2.getString();
                boolean indent = v3 == null ? true : v3.getBoolean();
                result = ValueString.get(StringUtils.xmlNode(v0.getString(), attr, content, indent), database.getMode().treatEmptyStringsAsNull);
                break;
            }
        case REGEXP_REPLACE:
            {
                String regexp = v1.getString();
                String replacement = v2.getString();
                if (database.getMode().regexpReplaceBackslashReferences) {
                    if ((replacement.indexOf('\\') >= 0) || (replacement.indexOf('$') >= 0)) {
                        StringBuilder sb = new StringBuilder();
                        for (int i = 0; i < replacement.length(); i++) {
                            char c = replacement.charAt(i);
                            if (c == '$') {
                                sb.append('\\');
                            } else if (c == '\\' && ++i < replacement.length()) {
                                c = replacement.charAt(i);
                                sb.append(c >= '0' && c <= '9' ? '$' : '\\');
                            }
                            sb.append(c);
                        }
                        replacement = sb.toString();
                    }
                }
                String regexpMode = v3 == null || v3.getString() == null ? "" : v3.getString();
                int flags = makeRegexpFlags(regexpMode);
                try {
                    result = ValueString.get(Pattern.compile(regexp, flags).matcher(v0.getString()).replaceAll(replacement), database.getMode().treatEmptyStringsAsNull);
                } catch (StringIndexOutOfBoundsException e) {
                    throw DbException.get(ErrorCode.LIKE_ESCAPE_ERROR_1, e, replacement);
                } catch (PatternSyntaxException e) {
                    throw DbException.get(ErrorCode.LIKE_ESCAPE_ERROR_1, e, regexp);
                } catch (IllegalArgumentException e) {
                    throw DbException.get(ErrorCode.LIKE_ESCAPE_ERROR_1, e, replacement);
                }
                break;
            }
        case RPAD:
            result = ValueString.get(StringUtils.pad(v0.getString(), v1.getInt(), v2 == null ? null : v2.getString(), true), database.getMode().treatEmptyStringsAsNull);
            break;
        case LPAD:
            result = ValueString.get(StringUtils.pad(v0.getString(), v1.getInt(), v2 == null ? null : v2.getString(), false), database.getMode().treatEmptyStringsAsNull);
            break;
        case ORA_HASH:
            result = ValueLong.get(oraHash(v0.getString(), v1 == null ? null : v1.getInt(), v2 == null ? null : v2.getInt()));
            break;
        case TO_CHAR:
            switch(v0.getType()) {
                case Value.TIME:
                case Value.DATE:
                case Value.TIMESTAMP:
                case Value.TIMESTAMP_TZ:
                    result = ValueString.get(ToChar.toCharDateTime(v0, v1 == null ? null : v1.getString(), v2 == null ? null : v2.getString()), database.getMode().treatEmptyStringsAsNull);
                    break;
                case Value.SHORT:
                case Value.INT:
                case Value.LONG:
                case Value.DECIMAL:
                case Value.DOUBLE:
                case Value.FLOAT:
                    result = ValueString.get(ToChar.toChar(v0.getBigDecimal(), v1 == null ? null : v1.getString(), v2 == null ? null : v2.getString()), database.getMode().treatEmptyStringsAsNull);
                    break;
                default:
                    result = ValueString.get(v0.getString(), database.getMode().treatEmptyStringsAsNull);
            }
            break;
        case TO_DATE:
            result = ToDateParser.toDate(v0.getString(), v1 == null ? null : v1.getString());
            break;
        case TO_TIMESTAMP:
            result = ToDateParser.toTimestamp(v0.getString(), v1 == null ? null : v1.getString());
            break;
        case ADD_MONTHS:
            result = DateTimeFunctions.dateadd("MONTH", v1.getInt(), v0);
            break;
        case TO_TIMESTAMP_TZ:
            result = ToDateParser.toTimestampTz(v0.getString(), v1 == null ? null : v1.getString());
            break;
        case TRANSLATE:
            {
                String matching = v1.getString();
                String replacement = v2.getString();
                result = ValueString.get(translate(v0.getString(), matching, replacement), database.getMode().treatEmptyStringsAsNull);
                break;
            }
        case H2VERSION:
            result = ValueString.get(Constants.getVersion(), database.getMode().treatEmptyStringsAsNull);
            break;
        case DATE_ADD:
            result = DateTimeFunctions.dateadd(v0.getString(), v1.getLong(), v2);
            break;
        case DATE_DIFF:
            result = ValueLong.get(DateTimeFunctions.datediff(v0.getString(), v1, v2));
            break;
        case DATE_TRUNC:
            result = DateTimeFunctions.truncateDate(v0.getString(), v1);
            break;
        case EXTRACT:
            result = DateTimeFunctions.extract(v0.getString(), v1);
            break;
        case FORMATDATETIME:
            {
                if (v0 == ValueNull.INSTANCE || v1 == ValueNull.INSTANCE) {
                    result = ValueNull.INSTANCE;
                } else {
                    String locale = v2 == null ? null : v2 == ValueNull.INSTANCE ? null : v2.getString();
                    String tz = v3 == null ? null : v3 == ValueNull.INSTANCE ? null : v3.getString();
                    if (v0 instanceof ValueTimestampTimeZone) {
                        tz = DateTimeUtils.timeZoneNameFromOffsetMins(((ValueTimestampTimeZone) v0).getTimeZoneOffsetMins());
                    }
                    result = ValueString.get(DateTimeFunctions.formatDateTime(v0.getTimestamp(), v1.getString(), locale, tz), database.getMode().treatEmptyStringsAsNull);
                }
                break;
            }
        case PARSEDATETIME:
            {
                if (v0 == ValueNull.INSTANCE || v1 == ValueNull.INSTANCE) {
                    result = ValueNull.INSTANCE;
                } else {
                    String locale = v2 == null ? null : v2 == ValueNull.INSTANCE ? null : v2.getString();
                    String tz = v3 == null ? null : v3 == ValueNull.INSTANCE ? null : v3.getString();
                    java.util.Date d = DateTimeFunctions.parseDateTime(v0.getString(), v1.getString(), locale, tz);
                    result = ValueTimestamp.fromMillis(d.getTime());
                }
                break;
            }
        case NULLIF:
            result = database.areEqual(v0, v1) ? ValueNull.INSTANCE : v0;
            break;
        // system
        case NEXTVAL:
            {
                Sequence sequence = getSequence(session, v0, v1);
                SequenceValue value = new SequenceValue(sequence);
                result = value.getValue(session);
                break;
            }
        case CURRVAL:
            {
                Sequence sequence = getSequence(session, v0, v1);
                result = ValueLong.get(sequence.getCurrentValue());
                break;
            }
        case CSVREAD:
            {
                String fileName = v0.getString();
                String columnList = v1 == null ? null : v1.getString();
                Csv csv = new Csv();
                String options = v2 == null ? null : v2.getString();
                String charset = null;
                if (options != null && options.indexOf('=') >= 0) {
                    charset = csv.setOptions(options);
                } else {
                    charset = options;
                    String fieldSeparatorRead = v3 == null ? null : v3.getString();
                    String fieldDelimiter = v4 == null ? null : v4.getString();
                    String escapeCharacter = v5 == null ? null : v5.getString();
                    Value v6 = getNullOrValue(session, args, values, 6);
                    String nullString = v6 == null ? null : v6.getString();
                    setCsvDelimiterEscape(csv, fieldSeparatorRead, fieldDelimiter, escapeCharacter);
                    csv.setNullString(nullString);
                }
                char fieldSeparator = csv.getFieldSeparatorRead();
                String[] columns = StringUtils.arraySplit(columnList, fieldSeparator, true);
                try {
                    result = ValueResultSet.get(csv.read(fileName, columns, charset));
                } catch (SQLException e) {
                    throw DbException.convert(e);
                }
                break;
            }
        case LINK_SCHEMA:
            {
                session.getUser().checkAdmin();
                Connection conn = session.createConnection(false);
                ResultSet rs = LinkSchema.linkSchema(conn, v0.getString(), v1.getString(), v2.getString(), v3.getString(), v4.getString(), v5.getString());
                result = ValueResultSet.get(rs);
                break;
            }
        case CSVWRITE:
            {
                session.getUser().checkAdmin();
                Connection conn = session.createConnection(false);
                Csv csv = new Csv();
                String options = v2 == null ? null : v2.getString();
                String charset = null;
                if (options != null && options.indexOf('=') >= 0) {
                    charset = csv.setOptions(options);
                } else {
                    charset = options;
                    String fieldSeparatorWrite = v3 == null ? null : v3.getString();
                    String fieldDelimiter = v4 == null ? null : v4.getString();
                    String escapeCharacter = v5 == null ? null : v5.getString();
                    Value v6 = getNullOrValue(session, args, values, 6);
                    String nullString = v6 == null ? null : v6.getString();
                    Value v7 = getNullOrValue(session, args, values, 7);
                    String lineSeparator = v7 == null ? null : v7.getString();
                    setCsvDelimiterEscape(csv, fieldSeparatorWrite, fieldDelimiter, escapeCharacter);
                    csv.setNullString(nullString);
                    if (lineSeparator != null) {
                        csv.setLineSeparator(lineSeparator);
                    }
                }
                try {
                    int rows = csv.write(conn, v0.getString(), v1.getString(), charset);
                    result = ValueInt.get(rows);
                } catch (SQLException e) {
                    throw DbException.convert(e);
                }
                break;
            }
        case SET:
            {
                Variable var = (Variable) args[0];
                session.setVariable(var.getName(), v1);
                result = v1;
                break;
            }
        case FILE_READ:
            {
                session.getUser().checkAdmin();
                String fileName = v0.getString();
                boolean blob = args.length == 1;
                try {
                    long fileLength = FileUtils.size(fileName);
                    final InputStream in = FileUtils.newInputStream(fileName);
                    try {
                        if (blob) {
                            result = database.getLobStorage().createBlob(in, fileLength);
                        } else {
                            Reader reader;
                            if (v1 == ValueNull.INSTANCE) {
                                reader = new InputStreamReader(in);
                            } else {
                                reader = new InputStreamReader(in, v1.getString());
                            }
                            result = database.getLobStorage().createClob(reader, fileLength);
                        }
                    } finally {
                        IOUtils.closeSilently(in);
                    }
                    session.addTemporaryLob(result);
                } catch (IOException e) {
                    throw DbException.convertIOException(e, fileName);
                }
                break;
            }
        case FILE_WRITE:
            {
                session.getUser().checkAdmin();
                result = ValueNull.INSTANCE;
                String fileName = v1.getString();
                try {
                    FileOutputStream fileOutputStream = new FileOutputStream(fileName);
                    try (InputStream in = v0.getInputStream()) {
                        result = ValueLong.get(IOUtils.copyAndClose(in, fileOutputStream));
                    }
                } catch (IOException e) {
                    throw DbException.convertIOException(e, fileName);
                }
                break;
            }
        case TRUNCATE_VALUE:
            {
                result = v0.convertPrecision(v1.getLong(), v2.getBoolean());
                break;
            }
        case XMLTEXT:
            if (v1 == null) {
                result = ValueString.get(StringUtils.xmlText(v0.getString()), database.getMode().treatEmptyStringsAsNull);
            } else {
                result = ValueString.get(StringUtils.xmlText(v0.getString(), v1.getBoolean()), database.getMode().treatEmptyStringsAsNull);
            }
            break;
        case REGEXP_LIKE:
            {
                String regexp = v1.getString();
                String regexpMode = v2 == null || v2.getString() == null ? "" : v2.getString();
                int flags = makeRegexpFlags(regexpMode);
                try {
                    result = ValueBoolean.get(Pattern.compile(regexp, flags).matcher(v0.getString()).find());
                } catch (PatternSyntaxException e) {
                    throw DbException.get(ErrorCode.LIKE_ESCAPE_ERROR_1, e, regexp);
                }
                break;
            }
        case VALUES:
            result = session.getVariable(args[0].getSchemaName() + "." + args[0].getTableName() + "." + args[0].getColumnName());
            break;
        case SIGNAL:
            {
                String sqlState = v0.getString();
                if (sqlState.startsWith("00") || !SIGNAL_PATTERN.matcher(sqlState).matches()) {
                    throw DbException.getInvalidValueException("SQLSTATE", sqlState);
                }
                String msgText = v1.getString();
                throw DbException.fromUser(sqlState, msgText);
            }
        default:
            throw DbException.throwInternalError("type=" + info.type);
    }
    return result;
}

Example 3 with SequenceValue

use of org.h2.expression.SequenceValue in project h2database by h2database.

the class Insert method insertRows.

private int insertRows() {
    session.getUser().checkRight(table, Right.INSERT);
    setCurrentRowNumber(0);
    table.fire(session, Trigger.INSERT, true);
    rowNumber = 0;
    GeneratedKeys generatedKeys = session.getGeneratedKeys();
    generatedKeys.initialize(table);
    int listSize = list.size();
    if (listSize > 0) {
        int columnLen = columns.length;
        for (int x = 0; x < listSize; x++) {
            session.startStatementWithinTransaction();
            generatedKeys.nextRow();
            Row newRow = table.getTemplateRow();
            Expression[] expr = list.get(x);
            setCurrentRowNumber(x + 1);
            for (int i = 0; i < columnLen; i++) {
                Column c = columns[i];
                int index = c.getColumnId();
                Expression e = expr[i];
                if (e != null) {
                    // e can be null (DEFAULT)
                    e = e.optimize(session);
                    try {
                        Value v = c.convert(e.getValue(session), session.getDatabase().getMode());
                        newRow.setValue(index, v);
                        if (e instanceof SequenceValue) {
                            generatedKeys.add(c);
                        }
                    } catch (DbException ex) {
                        throw setRow(ex, x, getSQL(expr));
                    }
                }
            }
            rowNumber++;
            table.validateConvertUpdateSequence(session, newRow);
            boolean done = table.fireBeforeRow(session, null, newRow);
            if (!done) {
                table.lock(session, true, false);
                try {
                    table.addRow(session, newRow);
                } catch (DbException de) {
                    if (handleOnDuplicate(de)) {
                        // MySQL returns 2 for updated row
                        // TODO: detect no-op change
                        rowNumber++;
                    } else {
                        // INSERT IGNORE case
                        rowNumber--;
                    }
                    continue;
                }
                generatedKeys.confirmRow(newRow);
                session.log(table, UndoLogRecord.INSERT, newRow);
                table.fireAfterRow(session, null, newRow, false);
            }
        }
    } else {
        table.lock(session, true, false);
        if (insertFromSelect) {
            query.query(0, this);
        } else {
            ResultInterface rows = query.query(0);
            while (rows.next()) {
                generatedKeys.nextRow();
                Value[] r = rows.currentRow();
                Row newRow = addRowImpl(r);
                if (newRow != null) {
                    generatedKeys.confirmRow(newRow);
                }
            }
            rows.close();
        }
    }
    table.fire(session, Trigger.INSERT, false);
    return rowNumber;
}

Example 4 with SequenceValue

use of org.h2.expression.SequenceValue in project h2database by h2database.

the class Merge method update.

@Override
public int update() {
    int count;
    session.getUser().checkRight(targetTable, Right.INSERT);
    session.getUser().checkRight(targetTable, Right.UPDATE);
    setCurrentRowNumber(0);
    GeneratedKeys generatedKeys = session.getGeneratedKeys();
    if (!valuesExpressionList.isEmpty()) {
        // process values in list
        count = 0;
        generatedKeys.initialize(targetTable);
        for (int x = 0, size = valuesExpressionList.size(); x < size; x++) {
            setCurrentRowNumber(x + 1);
            generatedKeys.nextRow();
            Expression[] expr = valuesExpressionList.get(x);
            Row newRow = targetTable.getTemplateRow();
            for (int i = 0, len = columns.length; i < len; i++) {
                Column c = columns[i];
                int index = c.getColumnId();
                Expression e = expr[i];
                if (e != null) {
                    // e can be null (DEFAULT)
                    try {
                        Value v = c.convert(e.getValue(session));
                        newRow.setValue(index, v);
                        if (e instanceof SequenceValue) {
                            generatedKeys.add(c);
                        }
                    } catch (DbException ex) {
                        throw setRow(ex, count, getSQL(expr));
                    }
                }
            }
            merge(newRow);
            count++;
        }
    } else {
        // process select data for list
        query.setNeverLazy(true);
        ResultInterface rows = query.query(0);
        count = 0;
        targetTable.fire(session, Trigger.UPDATE | Trigger.INSERT, true);
        targetTable.lock(session, true, false);
        while (rows.next()) {
            count++;
            generatedKeys.nextRow();
            Value[] r = rows.currentRow();
            Row newRow = targetTable.getTemplateRow();
            setCurrentRowNumber(count);
            for (int j = 0; j < columns.length; j++) {
                Column c = columns[j];
                int index = c.getColumnId();
                try {
                    Value v = c.convert(r[j]);
                    newRow.setValue(index, v);
                } catch (DbException ex) {
                    throw setRow(ex, count, getSQL(r));
                }
            }
            merge(newRow);
        }
        rows.close();
        targetTable.fire(session, Trigger.UPDATE | Trigger.INSERT, false);
    }
    return count;
}

Example 5 with SequenceValue

use of org.h2.expression.SequenceValue in project h2database by h2database.

the class Column method convertAutoIncrementToSequence.

/**
 * Convert the auto-increment flag to a sequence that is linked with this
 * table.
 *
 * @param session the session
 * @param schema the schema where the sequence should be generated
 * @param id the object id
 * @param temporary true if the sequence is temporary and does not need to
 *            be stored
 */
public void convertAutoIncrementToSequence(Session session, Schema schema, int id, boolean temporary) {
    if (!autoIncrement) {
        DbException.throwInternalError();
    }
    if ("IDENTITY".equals(originalSQL)) {
        originalSQL = "BIGINT";
    } else if ("SERIAL".equals(originalSQL)) {
        originalSQL = "INT";
    }
    String sequenceName;
    do {
        ValueUuid uuid = ValueUuid.getNewRandom();
        String s = uuid.getString();
        s = StringUtils.toUpperEnglish(s.replace('-', '_'));
        sequenceName = "SYSTEM_SEQUENCE_" + s;
    } while (schema.findSequence(sequenceName) != null);
    Sequence seq = new Sequence(schema, id, sequenceName, start, increment);
    seq.setTemporary(temporary);
    session.getDatabase().addSchemaObject(session, seq);
    setAutoIncrement(false, 0, 0);
    SequenceValue seqValue = new SequenceValue(seq);
    setDefaultExpression(session, seqValue);
    setSequence(seq);
}