/** This Constructor is used to create metaInfo during sending. */
private MetaInfo(
String fileId,
int blockSize,
int thresholdSize,
String transId,
String originalEventId,
int totalBlocks,
int lastBlockSize)
throws FileAccessException, ApplicationException {
_subPath = getSubPath(fileId);
if (FileHelper.exist(IPackagingConstants.PACKAGING_PATH, _subPath, META_INFO_FILENAME)) {
getMetaInfoFromFile(fileId);
checkMetaInfo(
fileId, blockSize, thresholdSize, transId, originalEventId, totalBlocks, lastBlockSize);
} else {
_fileId = fileId;
_transId = transId;
_blockSize = blockSize;
_thresholdSize = thresholdSize;
_originalEventId = originalEventId;
_totalBlocks = totalBlocks;
_lastBlockSize = lastBlockSize;
createMetaInfo();
storeMetaInfoIntoFile();
}
}
/** This Constructor is used to create metaInfo when receiving. */
private MetaInfo(String fileId, int totalBlocks)
throws FileAccessException, ApplicationException {
_subPath = getSubPath(fileId);
if (FileHelper.exist(IPackagingConstants.PACKAGING_PATH, _subPath, META_INFO_FILENAME)) {
getMetaInfoFromFile(fileId);
checkMetaInfo(fileId);
if (_totalBlocks < totalBlocks) {
_totalBlocks = totalBlocks; // new total Block value
storeMetaInfoIntoFile();
}
} else {
_fileId = fileId;
createMetaInfo();
if (_totalBlocks < totalBlocks) _totalBlocks = totalBlocks;
storeMetaInfoIntoFile();
}
}
/** This Constructor is used to create metaInfo when receiving acknowledgement. */
private MetaInfo(String fileId) throws FileAccessException {
_subPath = getSubPath(fileId);
if (FileHelper.exist(IPackagingConstants.PACKAGING_PATH, _subPath, META_INFO_FILENAME))
getMetaInfoFromFile(fileId);
else throw new FileAccessException("Meta Info file not found!");
}