Best collection for this purpose
hai
i am developing a system which have messaging as the main goal .different clients from remote locations have to send messages(byte array) to an MDB .But my problem is i cant control this messaging system as lot of messages have to be processed by the MDB. So i want a good collection procedure to collect the messages and there by process the messages one by one,.Can any one tell me which collection class is suitable for this or any other ideas. Thanks in advance.
Decision procedure:
(a) do you need a separate unique key to access the data? If so, use some form of Map. Otherwise
(b) do you need uniqueness within the collection? If so, use some form of Set, otherwise some form of List or Queue.
(c) If you need a Map or Set, do you need ordering? If so use a sorted Map/Set/List (TreeMap/TreeSet), otherwise a hashed Map/Set/(HashMap/HashSet). OR
(d) if you need a List, do you need random access to inner elements? If so use an ArrayList, otherwise a LinkedList. If you only need access to the front and rear of the list consider a Queue.
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Design Patterns, best approach for this app
Hi all,
i am starting with design patterns, and i would like to hear your opinion on what would be the best approach for this app.
this is basically an app for data monitoring, analysis and logging (voltage, temperature & vibration)
i am using 3 devices for N channels (NI 9211A, NI 9215A, NI PXI 4472) all running at different rates. asynchronous.
and signals are being processed and monitored for logging at a rate specified by the user and in realtime also.
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i have attached the files for review, thanks in advance for taking the time.
Attachments:
V-T-G Monitor_Logger.llb 355 KBmundo wrote:
thanks Will for your response,
so, basically i could apply a producer/consummer architecture for just the Vibration analysis loop? or all data being collected by the Monitor/Logger loop?
is it ok having individual loops for every DAQ device as is shown?
thanks.
You could use the producer/consumer architecture to split the areas where you are doing both the data collection and teh analysis in the same state machine. If one of these processes is not time critical or the data rate is slow enough you could leave it in a single state machine. I admit that I didn't look through your code but based purely on the descriptions above I would imagine that you could change the three collection state machines to use a producer/consumer architecture. I would leave your UI processing in its own loop as well as the logging process. If this logging is time critical you may want to split that as well.
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blacksheepfibers wrote:
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