[jboss-jira] [JBoss JIRA] (DROOLS-4000) Improving error messages from backend to cell popover

[Jozef Marko (Jira)]

Jozef Marko created DROOLS-4000:
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             Summary:  Improving error messages from backend to cell popover
                 Key: DROOLS-4000
                 URL: https://issues.jboss.org/browse/DROOLS-4000
             Project: Drools
          Issue Type: Bug
          Components: Scenario Simulation and Testing
    Affects Versions: 7.22.0.Final
            Reporter: Jozef Marko
            Assignee: Yeser Amer


Aim of this ticket:
- Improve error messages sent by server to the cell popover in case of specific errors: eg. 
[~kkufova]: I noticed that Impossible to parse as boolean message keeps getting displayed instead of an actual help. For example, I used falsee instead of false. I think in this case we definitely need The expected value is 'false' but the actual one is 'falsee'. Another scenario: if the expected value is null but I enter [] instead, the error message is Error with this value: Impossible to parse as boolean. It doesn't say anything about the actual value being null.
- Improving exceptions handling related to this part: at the moment, any type of exception could be sent to the popover (eg. OutOfMemory). Only a subset should be managed.

Related to https://issues.jboss.org/browse/DROOLS-3838



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