@Override
public void serialize(DataOutput out, Data value) throws IOException {
if (value.length() > MAX_SIZE) {
// header, 1 means stored on disk in a file
out.writeByte(1);
serializeFile(out, value);
} else {
// header, 0 means stored on disk with MapDB
out.writeByte(0);
serializeMapDB(out, value);
}
}
public static Data createRandomData(int size, int number) {
int i = r.nextInt();
i = (i % 127);
int length = Math.abs(r.nextInt() % size);
if (length < 100) length += 100;
Data d = new Data();
d.length = length;
d.key = (byte) i;
d.data = new byte[length];
Arrays.fill(d.data, d.key);
if (number > 0 && d.data.length >= 4) {
// populate number
d.hasNr = true;
XByteBuffer.toBytes(number, d.data, 0);
}
return d;
}
private Data deserializeMapDB(DataInput in) throws IOException {
ByteBuf buf = Unpooled.buffer();
Data data = null;
while (data == null) {
buf.writeByte(in.readByte());
data = Data.decodeHeader(buf, signatureFactory);
}
int len = data.length();
byte me[] = new byte[len];
in.readFully(me);
buf = Unpooled.wrappedBuffer(me);
boolean retVal = data.decodeBuffer(buf);
if (!retVal) {
throw new IOException("data could not be read");
}
retVal = data.decodeDone(buf, signatureFactory);
if (!retVal) {
throw new IOException("signature could not be read");
}
return data;
}