public void truncate() throws JournalException {
beginTx();
int partitionCount = getPartitionCount();
for (int i = 0; i < partitionCount; i++) {
Partition<T> partition = getPartition(i, true);
partition.truncate(0);
partition.close();
Files.deleteOrException(partition.getPartitionDir());
}
closePartitions();
for (int i = 0, sz = getSymbolTableCount(); i < sz; i++) {
getSymbolTable(i).truncate();
}
appendTimestampLo = -1;
commitDurable();
}
private void rollbackPartitionDirs() throws JournalException {
File[] files =
getLocation()
.listFiles(
new FileFilter() {
public boolean accept(File f) {
return f.isDirectory()
&& !f.getName().startsWith(Constants.TEMP_DIRECTORY_PREFIX);
}
});
if (files != null) {
Arrays.sort(files);
for (int i = getPartitionCount(); i < files.length; i++) {
Files.deleteOrException(files[i]);
}
}
}
private void rollbackPartitions(Tx tx) throws JournalException {
int partitionIndex = tx.journalMaxRowID == -1 ? 0 : Rows.toPartitionIndex(tx.journalMaxRowID);
while (true) {
Partition<T> p = partitions.getLast();
if (p == null) {
break;
}
if (p.getPartitionIndex() > partitionIndex) {
p.close();
Files.deleteOrException(p.getPartitionDir());
partitions.remove(partitions.size() - 1);
} else if (p.getPartitionIndex() == partitionIndex) {
p.open();
p.truncate(tx.journalMaxRowID == -1 ? 0 : Rows.toLocalRowID(tx.journalMaxRowID));
break;
} else {
break;
}
}
}
/**
* Deletes entire Journal.
*
* @throws com.nfsdb.exceptions.JournalException if the Journal is open (must be closed)
*/
public void delete() throws JournalException {
if (isOpen()) {
throw new JournalException("Cannot delete open journal: %s", this);
}
Files.deleteOrException(getLocation());
}
