public Cache(DataFileCache dfc) {
dataFileCache = dfc;
capacity = dfc.capacity();
bytesCapacity = dfc.bytesCapacity();
rowComparator = new CachedObjectComparator();
rowTable = new CachedObject[capacity];
cacheMap = new ObjectCacheHashMap(capacity);
cacheBytesLength = 0;
}
public void add(CachedObject object) {
int size = object.getRealSize(cache.rowOut);
size = cache.rowOut.getStorageSize(size);
object.setStorageSize(size);
cache.add(object);
}
void writeTransactionRows() {
for (int i = 0, size = transactionRowLookup.size(); i < size; i++) {
if (transactionRowLookup.getValue(i) != 0) {
continue;
}
int key = transactionRowLookup.getKey(i);
try {
transactionRowLookup.setValue(i, (int) (fileOffset / scale));
RowInputInterface rowIn = cache.readObject(key);
fileStreamOut.write(rowIn.getBuffer(), 0, rowIn.getSize());
fileOffset += rowIn.getSize();
} catch (HsqlException e) {
} catch (IOException e) {
}
}
}
synchronized void saveRows(int count) throws IOException {
if (count == 0) {
return;
}
rowComparator.setType(rowComparator.COMPARE_POSITION);
sortTimer.start();
Sort.sort(rowTable, rowComparator, 0, count - 1);
sortTimer.stop();
saveAllTimer.start();
dataFileCache.saveRows(rowTable, 0, count);
saveRowCount += count;
/*
// not necessary if the full storage size of each object is written out
try {
dataFile.file.seek(fileFreePosition);
} catch (IOException e){}
*/
saveAllTimer.stop();
}
public CachedObject getKeep(int key) {
CachedObject object = cache.get(key, this, true);
return object;
}
public CachedObject get(int key) {
CachedObject object = cache.get(key, this, false);
return object;
}
public int getAccessCount() {
return cache.getAccessCount();
}
public void release(int i) {
cache.release(i);
}
public void remove(int i) {
cache.remove(i, this);
}
public int getStorageSize(int i) {
return cache.get(i, this, false).getStorageSize();
}
public CachedObject get(CachedObject object, boolean keep) {
object = cache.get(object, this, keep);
return object;
}
public CachedObject get(int key, boolean keep) {
CachedObject object = cache.get(key, this, keep);
return object;
}