Examples of org.hsqldb.store.BitMap

org.hsqldb.store.BitMap
Implementation of a bit map of any size, together with static methods to manipulate int, byte and byte[] values as bit maps. @author Fred Toussi (fredt@users dot sourceforge.net) @version 1.9.0 @since 1.8.0


        if (maxSize % pageSize != 0) {
            bitSize++;
        }


        bitMap = new BitMap(bitSize);
    }

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        }
    }


    void scanBitString() {


        BitMap map = new BitMap(32);


        while (true) {
            scanBitStringPart(map);


            if (token.isMalformed) {
                return;
            }


            if (scanSeparator() && charAt(currentPosition) == '\'') {
                continue;
            }


            break;
        }


        token.tokenValue = BinaryData.getBitData(map.getBytes(), map.size());
    }

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        return data;
    }


    public synchronized BinaryData convertToBit(String s) {


        BitMap map      = new BitMap(32);
        int    bitIndex = map.size();


        reset(s);
        resetState();
        byteOutputStream.reset(byteBuffer);


        for (; currentPosition < limit; currentPosition++) {
            int c = sqlString.charAt(currentPosition);


            if (c == '0') {
                bitIndex++;
            } else if (c == '1') {
                map.set(bitIndex);


                bitIndex++;
            } else {
                token.tokenType   = Tokens.X_MALFORMED_BIT_STRING;
                token.isMalformed = true;


                throw Error.error(ErrorCode.X_22018);
            }
        }


        map.setSize(bitIndex);


        return BinaryData.getBitData(map.getBytes(), map.size());
    }

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    public static BitMap sqlBitStringToBitMap(String s) throws IOException {


        int    l = s.length();
        int    n;
        int    bitIndex = 0;
        BitMap map      = new BitMap(l);


        for (int j = 0; j < l; j++) {
            char c = s.charAt(j);


            if (c == ' ') {
                continue;
            }


            n = getNibble(c);


            if (n != 0 && n != 1) {
                throw new IOException(
                    "hexadecimal string contains non hex character");    //NOI18N
            }


            if (n == 1) {
                map.set(bitIndex);
            }


            bitIndex++;
        }


        map.setSize(bitIndex);


        return map;
    }

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        if (maxSize % pageSize != 0) {
            bitSize++;
        }


        bitMap = new BitMap(bitSize);
    }

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        }
    }


    void scanBitString() {


        BitMap map = new BitMap(32);


        while (true) {
            scanBitStringPart(map);


            if (token.isMalformed) {
                return;
            }


            if (scanSeparator() && charAt(currentPosition) == '\'') {
                continue;
            }


            break;
        }


        token.tokenValue = new BinaryData(map.getBytes(), map.size());
    }

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        return data;
    }


    public synchronized BinaryData convertToBit(String s) {


        BitMap map      = new BitMap(32);
        int    bitIndex = map.size();


        reset(s);
        resetState();
        byteOutputStream.reset(byteBuffer);


        for (; currentPosition < limit; currentPosition++) {
            int c = sqlString.charAt(currentPosition);


            if (c == '0') {
                bitIndex++;
            } else if (c == '1') {
                map.set(bitIndex);


                bitIndex++;
            } else {
                token.tokenType   = Tokens.X_MALFORMED_BIT_STRING;
                token.isMalformed = true;


                throw Error.error(ErrorCode.X_22018);
            }
        }


        map.setSize(bitIndex);


        return new BinaryData(map.getBytes(), map.size());
    }

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        }
    }


    HsqlName[] readColumnNames(HsqlName tableName) {


        BitMap         quotedFlags = new BitMap(32);
        OrderedHashSet set         = readColumnNames(quotedFlags, false);
        HsqlName[]     colList     = new HsqlName[set.size()];


        for (int i = 0; i < colList.length; i++) {
            String  name   = (String) set.get(i);
            boolean quoted = quotedFlags.isSet(i);


            colList[i] = database.nameManager.newHsqlName(tableName.schema,
                    name, quoted, SchemaObject.COLUMN, tableName);
        }

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    protected RangeVariable readTableOrSubquery() {


        Table          table            = null;
        SimpleName     alias            = null;
        OrderedHashSet columnList       = null;
        BitMap         columnNameQuoted = null;
        SimpleName[]   columnNameList   = null;


        if (token.tokenType == Tokens.OPENBRACKET) {
            Expression e = XreadTableSubqueryOrJoinedTable();


            table = e.subQuery.getTable();
        } else {
            table = readTableName();


            if (table.isView()) {
                SubQuery sq = getViewSubquery((View) table);


//                sq.queryExpression = ((View) table).queryExpression;
                table = sq.getTable();
            }
        }


        boolean hasAs = false;


        if (token.tokenType == Tokens.AS) {
            read();
            checkIsNonCoreReservedIdentifier();


            hasAs = true;
        }


        if (isNonCoreReservedIdentifier()) {
            boolean limit = token.tokenType == Tokens.LIMIT
                            || token.tokenType == Tokens.OFFSET;
            int position = getPosition();


            alias = HsqlNameManager.getSimpleName(token.tokenString,
                                                  isDelimitedIdentifier());


            read();


            if (token.tokenType == Tokens.OPENBRACKET) {
                columnNameQuoted = new BitMap(32);
                columnList       = readColumnNames(columnNameQuoted, false);
            } else if (!hasAs && limit) {
                if (token.tokenType == Tokens.QUESTION
                        || token.tokenType == Tokens.X_VALUE) {
                    alias = null;


                    rewind(position);
                }
            }
        }


        if (columnList != null) {
            if (table.getColumnCount() != columnList.size()) {
                throw Error.error(ErrorCode.X_42593);
            }


            columnNameList = new SimpleName[columnList.size()];


            for (int i = 0; i < columnList.size(); i++) {
                SimpleName name =
                    HsqlNameManager.getSimpleName((String) columnList.get(i),
                                                  columnNameQuoted.isSet(i));


                columnNameList[i] = name;
            }
        }

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org.hsqldb.lib.StringConverter

org.hsqldb.ParserDQL

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org.hsqldb.Scanner

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