Examples of com.sleepycat.db.internal.Db

com.sleepycat.db.internal.Db

        throws DatabaseException {


        int createFlags = 0;


        createFlags |= xaCreate ? DbConstants.DB_XA_CREATE : 0;
        return new Db(dbenv, createFlags);
    }

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                    final DbTxn txn,
                    final String fileName,
                    final String databaseName)
        throws DatabaseException, java.io.FileNotFoundException {


        final Db db = createDatabase(dbenv);
        // The DB_THREAD flag is inherited from the environment
        // (defaulting to ON if no environment handle is supplied).
        boolean threaded = (dbenv == null ||
            (dbenv.get_open_flags() & DbConstants.DB_THREAD) != 0);


        int openFlags = 0;
        openFlags |= allowCreate ? DbConstants.DB_CREATE : 0;
        openFlags |= readUncommitted ? DbConstants.DB_READ_UNCOMMITTED : 0;
        openFlags |= exclusiveCreate ? DbConstants.DB_EXCL : 0;
        openFlags |= multiversion ? DbConstants.DB_MULTIVERSION : 0;
        openFlags |= noMMap ? DbConstants.DB_NOMMAP : 0;
        openFlags |= readOnly ? DbConstants.DB_RDONLY : 0;
        openFlags |= threaded ? DbConstants.DB_THREAD : 0;
        openFlags |= truncate ? DbConstants.DB_TRUNCATE : 0;


        if (transactional && txn == null)
            openFlags |= DbConstants.DB_AUTO_COMMIT;


        boolean succeeded = false;
        try {
            configureDatabase(db, DEFAULT);
            db.open(txn, fileName, databaseName, type.getId(), openFlags, mode);
            succeeded = true;
            return db;
        } finally {
            if (!succeeded)
                try {
                    db.close(0);
                } catch (Throwable t) {
                    // Ignore it -- an exception is already in flight.
                }
        }
    }

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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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    public static void remove(final String fileName,
                              final String databaseName,
                              DatabaseConfig config)
        throws DatabaseException, java.io.FileNotFoundException {


        final Db db = DatabaseConfig.checkNull(config).createDatabase(null);
        db.remove(fileName, databaseName, 0);
    }

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                              final String oldDatabaseName,
                              final String newDatabaseName,
                              DatabaseConfig config)
        throws DatabaseException, java.io.FileNotFoundException {


        final Db db = DatabaseConfig.checkNull(config).createDatabase(null);
        db.rename(fileName, oldDatabaseName, newDatabaseName, 0);
    }

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    */
    public static void upgrade(final String fileName,
                        DatabaseConfig config)
        throws DatabaseException, java.io.FileNotFoundException {


        final Db db = DatabaseConfig.checkNull(config).createDatabase(null);
        db.upgrade(fileName,
            config.getSortedDuplicates() ? DbConstants.DB_DUPSORT : 0);
        db.close(0);
    }

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                                 final java.io.PrintStream dumpStream,
                                 VerifyConfig verifyConfig,
                                 DatabaseConfig dbConfig)
        throws DatabaseException, java.io.FileNotFoundException {


        final Db db = DatabaseConfig.checkNull(dbConfig).createDatabase(null);
        return db.verify(fileName, databaseName, dumpStream,
            VerifyConfig.checkNull(verifyConfig).getFlags());
    }

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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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