Examples of com.sleepycat.je.Sequence

com.sleepycat.je.Sequence
A Sequence handle is used to manipulate a sequence record in a database. Sequence handles are opened using the {@link com.sleepycat.je.Database#openSequence Database.openSequence} method.

    @Override
    public Sequence openSequence(final Database database,
                                 final DatabaseEntry sequenceKey,
                                 final SequenceConfig sequenceConfig)
    {
        Sequence cachedSequence = _cachedSequences.get(sequenceKey);
        if (cachedSequence == null)
        {
            Sequence handle = database.openSequence(null, sequenceKey, sequenceConfig);
            Sequence existingHandle = _cachedSequences.putIfAbsent(sequenceKey, handle);
            if (existingHandle == null)
            {
                cachedSequence = handle;
            }
            else

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    }




    private void closeSequence(final DatabaseEntry sequenceKey)
    {
        Sequence cachedHandle = _cachedSequences.remove(sequenceKey);
        if (cachedHandle != null)
        {
            cachedHandle.close();
        }
    }

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        if (storeConfig.getReadOnly()) {
            throw new IllegalStateException("Store is read-only");
        }


        Sequence seq = sequenceMap.get(name);
        if (seq == null) {
            if (sequenceDb == null) {
                String[] fileAndDbNames =
                    parseDbName(storePrefix + SEQUENCE_DB);
                DatabaseConfig dbConfig = new DatabaseConfig();

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    @Override
    public Sequence openSequence(final Database database,
                                 final DatabaseEntry sequenceKey,
                                 final SequenceConfig sequenceConfig)
    {
        Sequence cachedSequence = _cachedSequences.get(sequenceKey);
        if (cachedSequence == null)
        {
            Sequence handle = database.openSequence(null, sequenceKey, sequenceConfig);
            Sequence existingHandle = _cachedSequences.putIfAbsent(sequenceKey, handle);
            if (existingHandle == null)
            {
                cachedSequence = handle;
            }
            else

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    }




    private void closeSequence(final DatabaseEntry sequenceKey)
    {
        Sequence cachedHandle = _cachedSequences.remove(sequenceKey);
        if (cachedHandle != null)
        {
            cachedHandle.close();
        }
    }

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    @Override
    public Sequence openSequence(final Database database,
                                 final DatabaseEntry sequenceKey,
                                 final SequenceConfig sequenceConfig)
    {
        Sequence cachedSequence = _cachedSequences.get(sequenceKey);
        if (cachedSequence == null)
        {
            Sequence handle = database.openSequence(null, sequenceKey, sequenceConfig);
            Sequence existingHandle = _cachedSequences.putIfAbsent(sequenceKey, handle);
            if (existingHandle == null)
            {
                cachedSequence = handle;
            }
            else

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    }




    private void closeSequence(final DatabaseEntry sequenceKey)
    {
        Sequence cachedHandle = _cachedSequences.remove(sequenceKey);
        if (cachedHandle != null)
        {
            cachedHandle.close();
        }
    }

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        try
        {
            // The implementations of sequences mean that there is only a transaction
            // after every n sequence values, where n is the MESSAGE_METADATA_SEQ_CONFIG.getCacheSize()


            Sequence mmdSeq = getEnvironmentFacade().openSequence(getMessageMetaDataSeqDb(),
                                                              MESSAGE_METADATA_SEQ_KEY,
                                                              MESSAGE_METADATA_SEQ_CONFIG);
            newMessageId = mmdSeq.get(null, 1);
        }
        catch (RuntimeException de)
        {
            throw getEnvironmentFacade().handleDatabaseException("Cannot get sequence value for new message", de);
        }

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