@Override
protected int writeData(final Data value, int hashCode) {
int id = super.writeData(value, hashCode);
++valuesCount;
if (IOStatistics.DEBUG && (valuesCount & IOStatistics.KEYS_FACTOR_MASK) == 0) {
IOStatistics.dump(
"Index " + myFile + ", values " + valuesCount + ", storage size:" + myStorage.length());
}
return id;
}
protected int enumerateImpl(
final Data value, final boolean onlyCheckForExisting, boolean saveNewValue)
throws IOException {
try {
lockStorage();
if (IntToIntBtree.doDump) System.out.println(value);
final int valueHC = myDataDescriptor.getHashCode(value);
final boolean hasMapping = btree.get(valueHC, myResultBuf);
if (!hasMapping && onlyCheckForExisting) {
return NULL_ID;
}
final int indexNodeValueAddress = hasMapping ? myResultBuf[0] : 0;
int collisionAddress = NULL_ID;
boolean hasExistingData = false;
if (!myInlineKeysNoMapping) {
collisionAddress = NULL_ID;
if (indexNodeValueAddress > 0) {
// we found reference to no dupe key
if (isKeyAtIndex(value, indexNodeValueAddress)) {
if (!saveNewValue) {
++myExistingKeysEnumerated;
return indexNodeValueAddress;
}
hasExistingData = true;
}
collisionAddress = indexNodeValueAddress;
} else if (indexNodeValueAddress < 0) { // indexNodeValueAddress points to duplicates list
collisionAddress = -indexNodeValueAddress;
while (true) {
final int address = myStorage.getInt(collisionAddress);
if (isKeyAtIndex(value, address)) {
if (!saveNewValue) return address;
hasExistingData = true;
break;
}
int newCollisionAddress = myStorage.getInt(collisionAddress + COLLISION_OFFSET);
if (newCollisionAddress == 0) break;
collisionAddress = newCollisionAddress;
}
}
if (onlyCheckForExisting) return NULL_ID;
} else {
if (hasMapping) {
if (!saveNewValue) return indexNodeValueAddress;
hasExistingData = true;
}
}
int newValueId = writeData(value, valueHC);
++myValuesCount;
if (IOStatistics.DEBUG && (myValuesCount & IOStatistics.KEYS_FACTOR_MASK) == 0) {
IOStatistics.dump(
"Index "
+ myFile
+ ", values "
+ myValuesCount
+ ", existing keys enumerated:"
+ myExistingKeysEnumerated
+ ", storage size:"
+ myStorage.length());
btree.dumpStatistics();
}
if (collisionAddress != NULL_ID) {
if (hasExistingData) {
if (indexNodeValueAddress > 0) {
btree.put(valueHC, newValueId);
} else {
myStorage.putInt(collisionAddress, newValueId);
}
} else {
if (indexNodeValueAddress > 0) {
// organize collision type reference
int duplicatedValueOff = nextDuplicatedValueRecord();
btree.put(valueHC, -duplicatedValueOff);
myStorage.putInt(
duplicatedValueOff,
indexNodeValueAddress); // we will set collision offset in next if
collisionAddress = duplicatedValueOff;
++myCollisions;
}
++myCollisions;
int duplicatedValueOff = nextDuplicatedValueRecord();
myStorage.putInt(collisionAddress + COLLISION_OFFSET, duplicatedValueOff);
myStorage.putInt(duplicatedValueOff, newValueId);
myStorage.putInt(duplicatedValueOff + COLLISION_OFFSET, 0);
}
} else {
btree.put(valueHC, newValueId);
}
if (IntToIntBtree.doSanityCheck) {
if (!myInlineKeysNoMapping) {
Data data = valueOf(newValueId);
IntToIntBtree.myAssert(myDataDescriptor.isEqual(value, data));
}
}
return newValueId;
} catch (IllegalStateException e) {
CorruptedException exception = new CorruptedException(myFile);
exception.initCause(e);
throw exception;
} finally {
unlockStorage();
}
}