public static BigInteger readBigInteger(DataInputView source) throws IOException {
final int len = source.readInt();
if (len < 4) {
switch (len) {
case 0:
return null;
case 1:
return BigInteger.ZERO;
case 2:
return BigInteger.ONE;
case 3:
return BigInteger.TEN;
}
}
final byte[] bytes = new byte[len - 4];
source.read(bytes);
return new BigInteger(bytes);
}
/**
* Constructs a new {@code Context} by reading from a {@link DataInputView} that contains a
* serialized context that we wrote in {@link
* #writeToState(StateBackend.CheckpointStateOutputView)}
*/
@SuppressWarnings("unchecked")
protected Context(DataInputView in, ClassLoader userClassloader) throws Exception {
this.key = keySerializer.deserialize(in);
this.window = windowSerializer.deserialize(in);
this.watermarkTimer = in.readLong();
this.processingTimeTimer = in.readLong();
int stateSize = in.readInt();
byte[] stateData = new byte[stateSize];
in.read(stateData);
state = InstantiationUtil.deserializeObject(stateData, userClassloader);
this.windowBuffer = windowBufferFactory.create();
int numElements = in.readInt();
MultiplexingStreamRecordSerializer<IN> recordSerializer =
new MultiplexingStreamRecordSerializer<>(inputSerializer);
for (int i = 0; i < numElements; i++) {
windowBuffer.storeElement(recordSerializer.deserialize(in).<IN>asRecord());
}
}