public void serialize(BloomFilter bf, DataOutput dos) throws IOException {
int bitLength = bf.bitset.getNumWords();
int pageSize = bf.bitset.getPageSize();
int pageCount = bf.bitset.getPageCount();
dos.writeInt(bf.getHashCount());
dos.writeInt(bitLength);
for (int p = 0; p < pageCount; p++) {
long[] bits = bf.bitset.getPage(p);
for (int i = 0; i < pageSize && bitLength-- > 0; i++) dos.writeLong(bits[i]);
}
}
public void serializeToFile(Context context) {
if (this.bloomFilter == null) return;
try {
FileOutputStream fout = context.openFileOutput(DIRECTORY_FILE, 0);
String numberFilter = Base64.encodeBytes(bloomFilter.getFilter());
NumberFilterStorage storage =
new NumberFilterStorage(numberFilter, bloomFilter.getHashCount());
storage.serializeToStream(fout);
fout.close();
} catch (IOException ioe) {
Log.w("NumberFilter", ioe);
}
}
/**
* Calculates a serialized size of the given Bloom Filter
*
* @see BloomFilterSerializer#serialize(BloomFilter, DataOutput)
* @param bf Bloom filter to calculate serialized size
* @return serialized size of the given bloom filter
*/
public long serializedSize(BloomFilter bf, TypeSizes typeSizes) {
int bitLength = bf.bitset.getNumWords();
int pageSize = bf.bitset.getPageSize();
int pageCount = bf.bitset.getPageCount();
int size = 0;
size += typeSizes.sizeof(bf.getHashCount()); // hash count
size += typeSizes.sizeof(bitLength); // length
for (int p = 0; p < pageCount; p++) {
long[] bits = bf.bitset.getPage(p);
for (int i = 0; i < pageSize && bitLength-- > 0; i++)
size += typeSizes.sizeof(bits[i]); // bucket
}
return size;
}
