public Object read(int token, DataInputStream inputStream) throws IOException {
String className = tupleSerialization.getClassNameFor(token);
if (className == null) className = WritableUtils.readString(inputStream);
Deserializer deserializer = deserializers.get(className);
if (deserializer == null) {
deserializer = tupleSerialization.getNewDeserializer(className);
deserializer.open(inputStream);
deserializers.put(className, deserializer);
}
Object foundObject = null;
Object object = null;
try {
object = deserializer.deserialize(foundObject);
} catch (IOException exception) {
LOG.error(
"failed deserializing token: " + token + " with classname: " + className, exception);
throw exception;
}
return object;
}
/**
* Constructor SerializationElementReader creates a new SerializationElementReader instance.
*
* @param tupleSerialization of type TupleSerialization
*/
public SerializationElementReader(TupleSerialization tupleSerialization) {
this.tupleSerialization = tupleSerialization;
tupleSerialization.initTokenMaps();
}
