Examples of org.hsqldb.map.BitMap

org.hsqldb.map.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 2.3.2 @since 1.8.0

    public static BitMap sqlBitStringToBitMap(String s) throws IOException {


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


        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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        }
    }


    void scanBitString() {


        BitMap map = new BitMap(32, true);


        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, true);
        int    bitIndex = 0;


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


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


            if (c == '0') {
                map.unset(bitIndex);


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


        bitMap                = new BitMap(bitSize, false);
        buffer                = new byte[pageSize + 12];
        byteArrayOutputStream = new HsqlByteArrayOutputStream(buffer);
    }

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    //
    BitMap bitMap;


    public BitMapCachedObject(int capacity) {
        bitMap     = new BitMap(new int[capacity]);
        hasChanged = true;
    }

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        }
    }


    HsqlName[] readColumnNames(HsqlName tableName) {


        BitMap         quotedFlags = new BitMap(32, true);
        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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        }
    }


    SimpleName[] readColumnNameList(OrderedHashSet set) {


        BitMap columnNameQuoted = new BitMap(32, true);


        readThis(Tokens.OPENBRACKET);
        readColumnNameList(set, columnNameQuoted, false);
        readThis(Tokens.CLOSEBRACKET);


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


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


            columnNameList[i] = name;
        }


        return columnNameList;

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Related Classes of org.hsqldb.map.BitMap

org.hsqldb.lib.StringConverter

org.hsqldb.ParserDQL

org.hsqldb.persist.BitMapCachedObject

org.hsqldb.persist.RAShadowFile

org.hsqldb.Scanner

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