Package org.apache.plc4x.java.s7.readwrite.optimizer

Class DefaultS7MessageProcessor

java.lang.Object
org.apache.plc4x.java.s7.readwrite.optimizer.DefaultS7MessageProcessor
All Implemented Interfaces:
S7MessageProcessor
public class DefaultS7MessageProcessor extends Object implements S7MessageProcessor
While a SetupCommunication message is no problem, when reading or writing data, situations could arise that have to be handled. The following situations have to be handled: - The number of request items is so big, that the resulting PDU would exceed the agreed upon PDU size: The request has to be split up into multiple requests. - If large blocks of data are requested by request items the result of a request could exceed the PDU size: The requests has to be split up into multiple requests where each requests response doesn't exceed the PDU size. The following optimizations should be implemented: - If blocks are read which are in near proximity to each other it could be better to replace multiple requests by one that includes multiple blocks. - Rearranging the order of request items could reduce the number of needed PDUs.