* When true, writes out all cached rows that have been modified and the
* free position pointer for the *.data file and then closes the file.
*/
public void close(boolean write) throws HsqlException {
SimpleLog appLog = database.logger.appLog;
try {
if (cacheReadonly) {
if (dataFile != null) {
dataFile.close();
}
return;
}
StopWatch sw = new StopWatch();
appLog.sendLine(SimpleLog.LOG_NORMAL,
"DataFileCache.close(" + write + ") : start");
if (write) {
cache.saveAll();
Trace.printSystemOut("saveAll: " + sw.elapsedTime());
appLog.sendLine(SimpleLog.LOG_NORMAL,
"DataFileCache.close() : save data");
if (fileModified || freeBlocks.isModified()) {
// set empty
dataFile.seek(LONG_EMPTY_SIZE);
dataFile.writeLong(freeBlocks.getLostBlocksSize());
// set end
dataFile.seek(LONG_FREE_POS_POS);
dataFile.writeLong(fileFreePosition);
// set saved flag;
dataFile.seek(FLAGS_POS);
int flag = BitMap.set(0, FLAG_ISSAVED);
if (hasRowInfo) {
flag = BitMap.set(flag, FLAG_ROWINFO);
}
dataFile.writeInt(flag);
appLog.sendLine(SimpleLog.LOG_NORMAL,
"DataFileCache.close() : flags");
//
if (dataFile.length() != fileFreePosition) {
dataFile.seek(fileFreePosition);
}
appLog.sendLine(SimpleLog.LOG_NORMAL,
"DataFileCache.close() : seek end");
Trace.printSystemOut("pos and flags: "
+ sw.elapsedTime());
}
}
if (dataFile != null) {
dataFile.close();
appLog.sendLine(SimpleLog.LOG_NORMAL,
"DataFileCache.close() : close");
dataFile = null;
Trace.printSystemOut("close: " + sw.elapsedTime());
}
boolean empty = fileFreePosition == INITIAL_FREE_POS;
if (empty) {
fa.removeElement(fileName);
fa.removeElement(backupFileName);
}
} catch (Throwable e) {
appLog.logContext(e, null);
throw Trace.error(Trace.FILE_IO_ERROR, Trace.DataFileCache_close,
new Object[] {
e, fileName
});