Package ca.odell.glazedlists.impl.io

Examples of ca.odell.glazedlists.impl.io.Bufferlo

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        this.size[1] = size;
        this.on = false;

        // write the size
        FileChannel fileChannel = persistentMap.getFileChannel();
        Bufferlo sizeData = new Bufferlo();
        DataOutputStream sizeDataOut = new DataOutputStream(sizeData.getOutputStream());

        sizeDataOut.writeInt(0); // on == false
        sizeDataOut.writeInt(sizeToUse);
        sizeDataOut.writeInt(this.size[0]);
        sizeDataOut.writeInt(this.size[1]);
        sizeData.writeToChannel(fileChannel.position(offset));
        fileChannel.force(false);
    }
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        // turn the chunk off
        this.on = false;

        // write that to disk
        FileChannel fileChannel = persistentMap.getFileChannel();
        Bufferlo sizeData = new Bufferlo();
        DataOutputStream sizeDataOut = new DataOutputStream(sizeData.getOutputStream());

        sizeDataOut.writeInt(0); // on == false
        sizeData.writeToChannel(fileChannel.position(offset));
        fileChannel.force(false);
     }
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     * Reads the chunk into memory.
     */
    static Chunk readChunk(PersistentMap persistentMap) throws IOException {
        // prepare to read
        FileChannel fileChannel = persistentMap.getFileChannel();
        Bufferlo sizeData = new Bufferlo();
        DataInputStream dataIn = new DataInputStream(sizeData.getInputStream());

        // read the header
        int offset = (int)fileChannel.position();
        int bytesRequired = 16;
        int read = sizeData.readFromChannel(fileChannel, bytesRequired);
        if(read < 0) return null;
        else if(read < bytesRequired) throw new IOException("Insufficent bytes available");

        // parse the header
        int on = dataIn.readInt();
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        assert(offset != -1);
        assert(!on);

        // prepare to write
        FileChannel fileChannel = persistentMap.getFileChannel();
        Bufferlo chunkData = new Bufferlo();
        DataOutputStream chunkDataOut = new DataOutputStream(chunkData.getOutputStream());

        // write the data
        chunkDataOut.writeInt(sequenceId);
        chunkDataOut.writeInt(keyBytesLength);
        chunkDataOut.writeInt(valueBytesLength);
        chunkData.append(keyBytes);
        chunkData.append(valueBytes);

        chunkData.writeToChannel(fileChannel.position(offset + 16));
        fileChannel.force(false);

        // turn the written data on
        on = true;
        chunkDataOut.writeInt(1); // on == true
        chunkData.writeToChannel(fileChannel.position(offset));
        fileChannel.force(false);

        // clean up stuff we don't need no more
        keyBytes = null;
        valueBytes = null;
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Related Classes of ca.odell.glazedlists.impl.io.Bufferlo

  • ca.odell.glazedlists.impl.ctp.CTPClient
  • ca.odell.glazedlists.impl.ctp.CTPConnection
  • ca.odell.glazedlists.impl.pmap.Chunk
  • ca.odell.glazedlists.impl.pmap.OpenFile
  • ca.odell.glazedlists.impl.pmap.PersistentMapTest
  • ca.odell.glazedlists.impl.rbp.PeerBlock
  • ca.odell.glazedlists.impl.rbp.PeerResource
  • ca.odell.glazedlists.impl.rbp.ResourceUri
  • ca.odell.glazedlists.impl.rbp.StringResource
  • ca.odell.glazedlists.io.FileList
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