Examples of org.apache.kahadb.util.DataByteArrayInputStream

org.apache.kahadb.util.DataByteArrayInputStream
Optimized ByteArrayInputStream that can be used more than once

                pageFile.readPage(page.getPageId(), chunk.getData());
                
                chunk.setOffset(0);
                chunk.setLength(pageFile.getPageSize());


                DataByteArrayInputStream in = new DataByteArrayInputStream(chunk);
                page.read(in);


                chunk.setOffset(Page.PAGE_HEADER_SIZE);
                if (page.getType() == Page.PAGE_END_TYPE) {
                    chunk.setLength((int)(page.getNext()));

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     * @return
     * @throws IOException
     */
    public JournalCommand load(Location location) throws IOException {
        ByteSequence data = journal.read(location);
        DataByteArrayInputStream is = new DataByteArrayInputStream(data);
        byte readByte = is.readByte();
        KahaEntryType type = KahaEntryType.valueOf(readByte);
        if( type == null ) {
            throw new IOException("Could not load journal record. Invalid location: "+location);
        }
        JournalCommand message = (JournalCommand)type.createMessage();

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       DataByteArrayOutputStream os = new DataByteArrayOutputStream(size + 1);
       os.writeByte(expected.type().getNumber());
       expected.writeFramed(os);
       ByteSequence seq = os.toByteSequence();
       
       DataByteArrayInputStream is = new DataByteArrayInputStream(seq);
       KahaEntryType type = KahaEntryType.valueOf(is.readByte());
       JournalCommand message = (JournalCommand)type.createMessage();
       message.mergeFramed(is);
       
       assertEquals(expected, message);
    }

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     * @return
     * @throws IOException
     */
    public JournalCommand<?> load(Location location) throws IOException {
        ByteSequence data = journal.read(location);
        DataByteArrayInputStream is = new DataByteArrayInputStream(data);
        byte readByte = is.readByte();
        KahaEntryType type = KahaEntryType.valueOf(readByte);
        if( type == null ) {
            throw new IOException("Could not load journal record. Invalid location: "+location);
        }
        JournalCommand<?> message = (JournalCommand<?>)type.createMessage();

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        if( LOG_SLOW_ACCESS_TIME>0 && end-start > LOG_SLOW_ACCESS_TIME) {
            if (LOG.isInfoEnabled()) {
                LOG.info("Slow KahaDB access: Journal read took: "+(end-start)+" ms");
            }
        }
        DataByteArrayInputStream is = new DataByteArrayInputStream(data);
        byte readByte = is.readByte();
        KahaEntryType type = KahaEntryType.valueOf(readByte);
        if( type == null ) {
            throw new IOException("Could not load journal record. Invalid location: "+location);
        }
        JournalCommand<?> message = (JournalCommand<?>)type.createMessage();

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