Lookup Options in SOA11g.

Question

Hi ,
I have a requirement to create a lookup like below , and access the same in SOA 11g BPEL / Mediator process.
This Should be dynamic in nature, so that business users can modify / add the lookup values at runtime.
Level------AppName
1---------A
2---------B
3---------C
1---------D
1---------E
2---------F
From My SOA BPEL Process I have to search for the AppNames for a particular level. For eg : All AppNames for the Level 1 should return me all APpNames at level 1 ie., A,D,E. Please note that Level can have duplicate values as shown above.( ie., level 1 occurs more than once ).
Solution I initially thought :
Using DVMS for Lookup.
In SOA process dvm:lookup1M() to accces the same.
However I am not able to do that as in run time when I look up for App Names for Level "1" , it throws me an error like
"ensure the source value is unique for a given source column.'."
If this is not possible then the only way to do this using DVMS is to setup something like the below ( instead like above dvm)
Level-------AppName
1-----------A,D,E
2-----------B,F
3 ----------C
and now I will have to parse the string A,D,E inside my code to access them individually which is a least preferred way to us.
Dont we have any other options in SOA for doing the same ?
Kindly help !
Thanks,
Sridhar.
Edited by: Sridhar-SOA on Jun 2, 2012 11:33 AM
Edited by: Sridhar-SOA on Jun 2, 2012 11:36 AM

Answer 1

Both options shouldn't be used for fast data acqusition:
Option Force Interrupt Mode: Analog Input doesn't use DMA in this mode. Depending on sample rate, this can help to avoid building blocks of data. Even when block size is set to one, the data can arrive in DASYLab in blocks (e.g. 8 blocks at the same time, then a pause for duration of 8 blocks, then another 8 blocks). This is a disadvantage for applications like PID control. Switching the mode to Interrupt Mode can help to avoid building such blocks, depending on measurement hardware and sampling rate. The option shouldn't be used for fast acquisition as the data throughput is much better in DMA mode.
Option Slow Interchannel Scanning: In default setting, on every sample point the hardware is sampling all channels as fast as possible (e.g. 1 µs between two channels on 1 MHz card), so they are sampled nearly at the same time. When this option is on, the hardware uses almost the complete time (98%) between two sample points to scan the channels (e.g. with 4 channels at 1 kHz it is nearly 250 µs between two channel scans). This can slightly increase the accuracy of the measurement when slow acqusition is used.