Package com.sleepycat.db.internal

Examples of com.sleepycat.db.internal.Db

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        if (newFile.exists(directory))
            newFile.delete(directory);

        try {
            Db files = directory.files;
            DbTxn txn = directory.txn;

            files.del(txn, key, 0);
            setName(name);
            files.put(txn, key, data, 0);
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
    }
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        if (newFile.exists(directory))
            newFile.delete(directory);

        try {
            Db files = directory.files;
            DbTxn txn = directory.txn;

            files.del(txn, key, 0);
            setName(name);
            files.put(txn, key, data, 0);
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
    }
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                throw new IOException("File does not exist: " + name);
            else
            {
                DatabaseEntry key = new DatabaseEntry(new byte[24]);
                DatabaseEntry data = new DatabaseEntry((byte[]) null);
                Db blocks = directory.blocks;
                DbTxn txn = directory.txn;
                int flags = directory.flags;

                key.setUserBuffer(24, true);
                data.setPartial(true);

                uuid = new byte[16];

                try {
                    do {
                        /* generate a v.4 random-uuid unique to this db */
                        random.nextBytes(uuid);
                        uuid[6] = (byte) ((byte) 0x40 |
                                          (uuid[6] & (byte) 0x0f));
                        uuid[8] = (byte) ((byte) 0x80 |
                                          (uuid[8] & (byte) 0x3f));
                        System.arraycopy(uuid, 0, key.getData(), 0, 16);
                    } while (blocks.get(txn, key, data,
                                        flags) != DbConstants.DB_NOTFOUND);
                } catch (DatabaseException e) {
                    throw new IOException(e.getMessage());
                }
            }
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    }

    protected boolean exists(DbDirectory directory)
        throws IOException
    {
        Db files = directory.files;
        DbTxn txn = directory.txn;
        int flags = directory.flags;

        try {
            if (files.get(txn, key, data, flags) == DbConstants.DB_NOTFOUND)
                return false;
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
       
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    protected void modify(DbDirectory directory, long length, long timeModified)
        throws IOException
    {
        ByteArrayOutputStream buffer = new ByteArrayOutputStream(32);
        DataOutputStream out = new DataOutputStream(buffer);
        Db files = directory.files;
        DbTxn txn = directory.txn;

        out.writeLong(length);
        out.writeLong(timeModified);
        out.write(getKey());
        out.close();

        System.arraycopy(buffer.toByteArray(), 0, data.getData(), 0, 32);

        try {
            files.put(txn, key, data, 0);
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
       
        this.length = length;
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                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);
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        if (newFile.exists(directory))
            newFile.delete(directory);

        try {
            Db files = directory.files;
            DbTxn txn = directory.txn;

            files.del(txn, key, 0);
            setName(name);
            files.put(txn, key, data, 0);
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
    }
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Related Classes of com.sleepycat.db.internal.Db

  • com.sleepycat.db.Database
  • com.sleepycat.db.DatabaseConfig
  • com.sleepycat.db.SecondaryConfig
  • org.apache.lucene.store.db.File
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