Examples of com.sleepycat.db.internal.Dbc

com.sleepycat.db.internal.Dbc


    @Override
    public String[] listAll()
        throws IOException
    {
        Dbc cursor = null;
        List<String> list = new ArrayList<String>();


        try {
            try {
                DatabaseEntry key = new DatabaseEntry(new byte[0]);
                DatabaseEntry data = new DatabaseEntry((byte[]) null);


                data.setPartial(true);


                cursor = files.cursor(txn, flags);


                if (cursor.get(key, data,
                               DbConstants.DB_SET_RANGE | flags) != DbConstants.DB_NOTFOUND)
                {
                    ByteArrayInputStream buffer =
                        new ByteArrayInputStream(key.getData());
                    DataInputStream in = new DataInputStream(buffer);
                    String name = in.readUTF();
                
                    in.close();
                    list.add(name);


                    while (cursor.get(key, data,
                                      DbConstants.DB_NEXT | flags) != DbConstants.DB_NOTFOUND) {
                        buffer = new ByteArrayInputStream(key.getData());
                        in = new DataInputStream(buffer);
                        name = in.readUTF();
                        in.close();


                        list.add(name);
                    }
                }
            } finally {
                if (cursor != null)
                    cursor.close();
            }
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }

View Full Code Here

    }


    public String[] list()
        throws IOException
    {
        Dbc cursor = null;
        List list = new ArrayList();


        try {
            try {
                DatabaseEntry key = new DatabaseEntry(new byte[0]);
                DatabaseEntry data = new DatabaseEntry((byte[]) null);


                data.setPartial(true);


                cursor = files.cursor(txn, flags);


                if (cursor.get(key, data,
                               DbConstants.DB_SET_RANGE | flags) != DbConstants.DB_NOTFOUND)
                {
                    ByteArrayInputStream buffer =
                        new ByteArrayInputStream(key.getData());
                    DataInputStream in = new DataInputStream(buffer);
                    String name = in.readUTF();
                
                    in.close();
                    list.add(name);


                    while (cursor.get(key, data,
                                      DbConstants.DB_NEXT | flags) != DbConstants.DB_NOTFOUND) {
                        buffer = new ByteArrayInputStream(key.getData());
                        in = new DataInputStream(buffer);
                        name = in.readUTF();
                        in.close();


                        list.add(name);
                    }
                }
            } finally {
                if (cursor != null)
                    cursor.close();
            }
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }

View Full Code Here

    }


    public String[] list()
        throws IOException
    {
        Dbc cursor = null;
        List list = new ArrayList();


        try {
            try {
                DatabaseEntry key = new DatabaseEntry(new byte[0]);
                DatabaseEntry data = new DatabaseEntry((byte[]) null);


                data.setPartial(true);


                cursor = files.cursor(txn, flags);


                if (cursor.get(key, data,
                               DbConstants.DB_SET_RANGE | flags) != DbConstants.DB_NOTFOUND)
                {
                    ByteArrayInputStream buffer =
                        new ByteArrayInputStream(key.getData());
                    DataInputStream in = new DataInputStream(buffer);
                    String name = in.readUTF();
                
                    in.close();
                    list.add(name);


                    while (cursor.get(key, data,
                                      DbConstants.DB_NEXT | flags) != DbConstants.DB_NOTFOUND) {
                        buffer = new ByteArrayInputStream(key.getData());
                        in = new DataInputStream(buffer);
                        name = in.readUTF();
                        in.close();


                        list.add(name);
                    }
                }
            } finally {
                if (cursor != null)
                    cursor.close();
            }
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }

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        throws IOException
    {
        if (!exists(directory))
            throw new IOException("File does not exist: " + getName());


        Dbc cursor = null;


        try {
            try {
                byte[] bytes = getKey();
                int ulen = bytes.length + 8;
                byte[] cursorBytes = new byte[ulen];
                DatabaseEntry cursorKey = new DatabaseEntry(cursorBytes);
                DatabaseEntry cursorData = new DatabaseEntry((byte[]) null);
                Db files = directory.files;
                Db blocks = directory.blocks;
                DbTxn txn = directory.txn;
                int flags = directory.flags;


                System.arraycopy(bytes, 0, cursorBytes, 0, bytes.length);
                cursorKey.setUserBuffer(ulen, true);
                cursorData.setPartial(true);


                cursor = blocks.cursor(txn, flags);


                if (cursor.get(cursorKey, cursorData,
                               DbConstants.DB_SET_RANGE | flags) != DbConstants.DB_NOTFOUND)
                {
                    cursor.del(0);


                  outer:
                    while (cursor.get(cursorKey, cursorData,
                                      DbConstants.DB_NEXT | flags) != DbConstants.DB_NOTFOUND)
                    {
                        for (int i = 0; i < bytes.length; i++)
                            if (bytes[i] != cursorBytes[i])
                                break outer;


                        cursor.del(0);
                    }
                }


                files.del(txn, key, 0);
            } finally {
                if (cursor != null)
                    cursor.close();
            }
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
    }

View Full Code Here

         * so here's how to get it: dup the cursor and call getPrev, then dup
         * the result and call getNextDup.  If both succeed then there was a
         * previous duplicate and the first dup is sitting on it.  Keep that,
         * and call getCurrent to fill in the user's buffers.
         */
        Dbc dup1 = dbc.dup(DbConstants.DB_POSITION);
        try {
            int errCode = dup1.get(DatabaseEntry.IGNORE, DatabaseEntry.IGNORE,
                DbConstants.DB_PREV | LockMode.getFlag(lockMode));
            if (errCode == 0) {
                Dbc dup2 = dup1.dup(DbConstants.DB_POSITION);
                try {
                    errCode = dup2.get(DatabaseEntry.IGNORE,
                        DatabaseEntry.IGNORE,
                        DbConstants.DB_NEXT_DUP | LockMode.getFlag(lockMode));
                } finally {
                    dup2.close();
                }
            }
            if (errCode == 0)
                errCode = dup1.pget(key, pKey, data,
                    DbConstants.DB_CURRENT | LockMode.getFlag(lockMode) |
                    ((data == null) ? 0 : data.getMultiFlag()));
            if (errCode == 0) {
                Dbc tdbc = dbc;
                dbc = dup1;
                dup1 = tdbc;
            }
            return OperationStatus.fromInt(errCode);
        } finally {

View Full Code Here

        /*
         * The tricks here are making sure the cursor doesn't move on error and
         * noticing that if the key exists, that's an error and we don't want
         * to return the data.
         */
        Dbc tempDbc = dbc.dup(0);
        try {
            int errCode = tempDbc.get(key, DatabaseEntry.IGNORE,
                DbConstants.DB_SET | database.rmwFlag);
            if (errCode == 0)
                return OperationStatus.KEYEXIST;
            else if (errCode != DbConstants.DB_NOTFOUND &&
                errCode != DbConstants.DB_KEYEMPTY)
                return OperationStatus.fromInt(errCode);
            else {
                Dbc tdbc = dbc;
                dbc = tempDbc;
                tempDbc = tdbc;


                return OperationStatus.fromInt(
                    dbc.put(key, data, DbConstants.DB_KEYLAST));

View Full Code Here

        throws IOException
    {
        if (!exists(directory))
            throw new IOException("File does not exist: " + getName());


        Dbc cursor = null;


        try {
            try {
                byte[] bytes = getKey();
                int ulen = bytes.length + 8;
                byte[] cursorBytes = new byte[ulen];
                DatabaseEntry cursorKey = new DatabaseEntry(cursorBytes);
                DatabaseEntry cursorData = new DatabaseEntry(null);
                Db files = directory.files;
                Db blocks = directory.blocks;
                DbTxn txn = directory.txn;
                int flags = directory.flags;


                System.arraycopy(bytes, 0, cursorBytes, 0, bytes.length);
                cursorKey.setUserBuffer(ulen, true);
                cursorData.setPartial(true);


                cursor = blocks.cursor(txn, flags);


                if (cursor.get(cursorKey, cursorData,
                               DbConstants.DB_SET_RANGE | flags) != DbConstants.DB_NOTFOUND)
                {
                    cursor.del(0);


                    while (cursor.get(cursorKey, cursorData,
                                      DbConstants.DB_NEXT | flags) != DbConstants.DB_NOTFOUND) {
                        for (int i = 0; i < bytes.length; i++)
                            if (bytes[i] != cursorBytes[i])
                                return;


                        cursor.del(0);
                    }
                }


                files.del(txn, key, 0);
            } finally {
                if (cursor != null)
                    cursor.close();
            }
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
    }

View Full Code Here

    }


    public String[] list()
        throws IOException
    {
        Dbc cursor = null;
        List list = new ArrayList();


        try {
            try {
                DatabaseEntry key = new DatabaseEntry(new byte[0]);
                DatabaseEntry data = new DatabaseEntry(null);


                data.setPartial(true);


                cursor = files.cursor(txn, flags);


                if (cursor.get(key, data,
                               DbConstants.DB_SET_RANGE | flags) != DbConstants.DB_NOTFOUND)
                {
                    ByteArrayInputStream buffer =
                        new ByteArrayInputStream(key.getData());
                    DataInputStream in = new DataInputStream(buffer);
                    String name = in.readUTF();
                
                    in.close();
                    list.add(name);


                    while (cursor.get(key, data,
                                      DbConstants.DB_NEXT | flags) != DbConstants.DB_NOTFOUND) {
                        buffer = new ByteArrayInputStream(key.getData());
                        in = new DataInputStream(buffer);
                        name = in.readUTF();
                        in.close();


                        list.add(name);
                    }
                }
            } finally {
                if (cursor != null)
                    cursor.close();
            }
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }

View Full Code Here

        throws IOException
    {
        if (!exists(directory))
            throw new IOException("File does not exist: " + getName());


        Dbc cursor = null;


        try {
            try {
                byte[] bytes = getKey();
                int ulen = bytes.length + 8;
                byte[] cursorBytes = new byte[ulen];
                DatabaseEntry cursorKey = new DatabaseEntry(cursorBytes);
                DatabaseEntry cursorData = new DatabaseEntry(null);
                Db files = directory.files;
                Db blocks = directory.blocks;
                DbTxn txn = directory.txn;
                int flags = directory.flags;


                System.arraycopy(bytes, 0, cursorBytes, 0, bytes.length);
                cursorKey.setUserBuffer(ulen, true);
                cursorData.setPartial(true);


                cursor = blocks.cursor(txn, flags);


                if (cursor.get(cursorKey, cursorData,
                               DbConstants.DB_SET_RANGE | flags) != DbConstants.DB_NOTFOUND)
                {
                    cursor.del(0);


                  outer:
                    while (cursor.get(cursorKey, cursorData,
                                      DbConstants.DB_NEXT | flags) != DbConstants.DB_NOTFOUND)
                    {
                        for (int i = 0; i < bytes.length; i++)
                            if (bytes[i] != cursorBytes[i])
                                break outer;


                        cursor.del(0);
                    }
                }


                files.del(txn, key, 0);
            } finally {
                if (cursor != null)
                    cursor.close();
            }
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
    }

View Full Code Here

    }


    public String[] list()
        throws IOException
    {
        Dbc cursor = null;
        List list = new ArrayList();


        try {
            try {
                DatabaseEntry key = new DatabaseEntry(new byte[0]);
                DatabaseEntry data = new DatabaseEntry((byte[]) null);


                data.setPartial(true);


                cursor = files.cursor(txn, flags);


                if (cursor.get(key, data,
                               DbConstants.DB_SET_RANGE | flags) != DbConstants.DB_NOTFOUND)
                {
                    ByteArrayInputStream buffer =
                        new ByteArrayInputStream(key.getData());
                    DataInputStream in = new DataInputStream(buffer);
                    String name = in.readUTF();
                
                    in.close();
                    list.add(name);


                    while (cursor.get(key, data,
                                      DbConstants.DB_NEXT | flags) != DbConstants.DB_NOTFOUND) {
                        buffer = new ByteArrayInputStream(key.getData());
                        in = new DataInputStream(buffer);
                        name = in.readUTF();
                        in.close();


                        list.add(name);
                    }
                }
            } finally {
                if (cursor != null)
                    cursor.close();
            }
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }

View Full Code Here

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