Hi Caroline:
I recently added application data to my project and here's what I did to get
it to work.
1. Add this to your drl file after your import statements.
<application-data
identifier="messages">java.util.ArrayList</application-data>
2. Set your application data to working memory.
workingMemory.setApplicationData("messages", new ArrayList());
Now fire your rules.
3. Consequence using application data.
<java:consequence>
messages.add(new RuleMessage("141", Violation.EXCEEDS,
Recipient.CSR, "Car not garaged at primary residence exceeds guidelines."));
</java:consequence>
4. After executing your rules, get the application data from your working
memory.
List messages = (List) workingMemory.getApplicationData("messages");
Doug
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Wednesday, November 30, 2005 5:52 AM
To: [email protected]
Subject: [drools-user] Application-Data Problem
Hi,
Sorry to ask a question thats been asked before but I couldn't
find a satisfactory reply. Is it possible to use application-data in the
following manner:
<application-data identifier="t">Transaction</application-data>
<rule name="rule1">
...............
<java:consequence>
t.setActionName("red");
</java:consequence>
</rule>
and then from my program do workingMemory.getApplicationData("t");
Right now I am receiving a Null Pointer exception in the consequence
block. This is solved by doing
<java:consequence>
te = new Transaction();
t.setActionName("red");
</java:consequence>
However obviously then when this si called
workingMemory.getApplicationData("t"), t does not hold the modified value.
Thanks
Caroline Grima
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