public void writeObject(ByteBuffer buffer, Object object) throws IOException {
Collection collection = (Collection) object;
int length = collection.size();
buffer.putInt(length);
if (length == 0) return;
Iterator it = collection.iterator();
Class elementClass = it.next().getClass();
while (it.hasNext()) {
Object obj = it.next();
if (obj.getClass() != elementClass) {
elementClass = null;
break;
}
}
if (elementClass != null) {
buffer.put((byte) 1);
Serializer.writeClass(buffer, elementClass);
Serializer serializer = Serializer.getSerializer(elementClass);
for (Object elem : collection) {
serializer.writeObject(buffer, elem);
}
} else {
buffer.put((byte) 0);
for (Object elem : collection) {
Serializer.writeClassAndObject(buffer, elem);
}
}
}
/**
* Converts a message to a ByteBuffer using the Serializer and the (short length) + data protocol.
* If target is null then a 32k byte buffer will be created and filled.
*/
public static ByteBuffer messageToBuffer(Message message, ByteBuffer target) {
// Could let the caller pass their own in
ByteBuffer buffer = target == null ? ByteBuffer.allocate(32767 + 2) : target;
try {
buffer.position(2);
Serializer.writeClassAndObject(buffer, message);
buffer.flip();
short dataLength = (short) (buffer.remaining() - 2);
buffer.putShort(dataLength);
buffer.position(0);
return buffer;
} catch (IOException e) {
throw new RuntimeException("Error serializing message", e);
}
}