de.huxhorn.sulky.codec.filebuffer.CodecFileBuffer java code examples

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private void myMethod () {
 OutputStreamWriter o =OutputStream out;new OutputStreamWriter(out)
OutputStream out;String charsetName;new OutputStreamWriter(out, charsetName)
HttpURLConnection connection;new OutputStreamWriter(connection.getOutputStream())
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}

@Override
public void addAll(E[] elements)
{
  addAll(Arrays.asList(elements));
}

private void setIndexFile(File indexFile)
{
  prepareFile(indexFile);
  this.indexFile = indexFile;
}

public FileBuffer<EventWrapper<T>> createBuffer(File dataFile, File indexFile, Map<String, String> usedMetaData)
{
  if(logger.isInfoEnabled()) logger.info("Creating buffer for dataFile '{}'.", dataFile.getAbsolutePath());
  CodecFileBuffer<EventWrapper<T>> result = new CodecFileBuffer<>(magicValue, false, usedMetaData, null, dataFile, indexFile);
  FileHeader fileHeader = result.getFileHeader();
  MetaData actualMetaData = fileHeader.getMetaData();
  result.setCodec(resolveCodec(actualMetaData));
  if(logger.isDebugEnabled()) logger.debug("Created file buffer: {}", result);
  return result;
}

setDataFile(dataFile);
setIndexFile(indexFile);
if(!initFilesIfNecessary())
  validateHeader();

@Override
public boolean set(long index, E element)
  initFilesIfNecessary();

setFileHeader(fileHeaderStrategy.writeFileHeader(dataFile, magicValue, preferredMetaData, preferredSparse));
indexDeleted=indexFile.delete();

setDataFile(dataFile);
setIndexFile(indexFile);
if(!initFilesIfNecessary())
  validateHeader();

initFilesIfNecessary();
int newElementCount = elements.size();
if(newElementCount > 0)

setFileHeader(fileHeaderStrategy.writeFileHeader(dataFile, magicValue, preferredMetaData, preferredSparse));
indexDeleted=indexFile.delete();

@Override
public boolean set(long index, E element)
  initFilesIfNecessary();

private void setIndexFile(File indexFile)
{
  prepareFile(indexFile);
  this.indexFile = indexFile;
}

setFileHeader(header);

@Override
public void addAll(E[] elements)
{
  addAll(Arrays.asList(elements));
}

public void add(E element)
  initFilesIfNecessary();

private void setDataFile(File dataFile)
{
  prepareFile(dataFile);
  this.dataFile = dataFile;
}

setFileHeader(header);

public void add(E element)
  initFilesIfNecessary();

private void setDataFile(File dataFile)
{
  prepareFile(dataFile);
  this.dataFile = dataFile;
}

initFilesIfNecessary();
int newElementCount = elements.size();
if(newElementCount > 0)

Javadoc

In contrast to SerializingFileBuffer, this implementation supports the following:

An optional magic value to identify the type of a buffer file. If present (and it should be), it is contained in the first four bytes of the data-file and can be evaluated by external classes, e.g. FileFilters. An application would use one (or more) specific magic value to identify it's own files.
Configurable Codec so the way the elements are actually written and read can be changed as needed.
Optional meta data that can be used to provide additional information about the content of the buffer. It might be used to identify the correct Codec required by the buffer
Optional ElementProcessors that are executed after elements are added to the buffer.

TODO: more documentation :p

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How to useCodecFileBuffer in de.huxhorn.sulky.codec.filebuffer

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CodecFileBuffer
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de.huxhorn.sulky.codec.filebuffer