[jboss-jira] [JBoss JIRA] (JBRULES-3080) Compilation of rules should fail when is not used quotes in a String attribute
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https://issues.jboss.org/browse/JBRULES-3080?page=com.atlassian.jira.plug...
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RH Bugzilla Integration commented on JBRULES-3080:
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Edson Tirelli <etirelli(a)redhat.com> made a comment on [bug
724767|https://bugzilla.redhat.com/show_bug.cgi?id=724767]
There is some confusion going on here. When a constraint uses operations between different
types of data, the engine will try to coerce them into compatible types. So in the state
example:
f : Fact( stringAttribute == 12 )
The engine identifies the incompatible (but valid) types, and try to coerce the constant
12 (number) into a compatible type to compare to the attribute. So, the engine
automatically converts 12 into "12" and then compare to the string attribute.
This is the expected behavior.
On the other example though:
f : Fact( stringAttribute == ab )
Unless ab is a previously declared variable, it is not a valid type, so a compilation
error is raised and no coercion is attempted.
This is not a bug.
Compilation of rules should fail when is not used quotes in a String
attribute
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Key: JBRULES-3080
URL: https://issues.jboss.org/browse/JBRULES-3080
Project: Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-compiler
Affects Versions: 5.1.1.FINAL
Reporter: Alessandro Lazarotti
Assignee: Mario Fusco
It is mandatory that Strings are placed between quotes. Guvnor/BRMS or DRL's plain
text should fail if you forgot the quotes but currently it just fails the build if you put
a value different of numerics:
f : Fact( stringAttribute == ab )
It will fail. The same must occur for:
f : Fact( stringAttribute == 12 )
... but it does not happen and the rule is never matched.
It is very important keep the same behaviour for both cases. The rule's author needs
to know about it before the package is built.
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