[jboss-jira] [JBoss JIRA] (DROOLS-5216) Rule compilation error when binding fields indexed with square brackets
Matteo Casalino created DROOLS-5216:
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Summary: Rule compilation error when binding fields indexed with square
brackets
Key: DROOLS-5216
URL: https://issues.redhat.com/browse/DROOLS-5216
Project: Drools
Issue Type: Bug
Components: core engine
Affects Versions: 7.35.0.Final
Reporter: Matteo Casalino
Assignee: Mario Fusco
Attachments: binding-field-indexed-with-square-brackets.zip
Executable model rule compilation fails on patters that bind a collection field indexed
with square brackets
Example of DRL that fails to compile:
{noformat}
rule "binding field indexed with square brackets"
when Pojo($firstItem : integerList[0])
Pojo(integerList[this.integerList.size()-1] == $firstItem)
then
end
{noformat}
Error:
{noformat}
Message [id=1, level=ERROR,
path=src/main/java/org/drools/reproducer/RulesE96881902F91EBF30C7D6404720A1A94RuleMethods0.java,
line=29, column=138
text=no suitable method found for
bind(org.drools.model.Variable<java.util.Map>,(org.drool[...]et(0))
method
org.drools.model.PatternDSL.PatternDef.<A>bind(org.drools.model.Variable<A>,org.drools.model.functions.Function1<org.drools.reproducer.Pojo,A>)
is not applicable
(inference variable A has incompatible bounds
equality constraints: java.util.Map
lower bounds: java.lang.Integer)
method
org.drools.model.PatternDSL.PatternDef.<A>bind(org.drools.model.Variable<A>,org.drools.model.functions.Function1<org.drools.reproducer.Pojo,A>,org.drools.model.PatternDSL.ReactOn)
is not applicable
(cannot infer type-variable(s) A
(actual and formal argument lists differ in length))
method
org.drools.model.PatternDSL.PatternDef.<A,U>bind(org.drools.model.Variable<A>,org.drools.model.Variable<U>,org.drools.model.functions.Function1<U,A>)
is not applicable
(cannot infer type-variable(s) A,U
(actual and formal argument lists differ in length))
{noformat}
The example works fine when compiling without executable model.
Furthermore, the same example expressed with OOPath fails to compile *both with and
without executable model*:
{noformat}
rule "binding field indexed with square brackets in OOPath"
when Pojo($firstItem : /integerList[0])
Pojo(/integerList[this.integerList.size()-1] == $firstItem)
then
end
{noformat}
Error without executable model:
{noformat}
Message [id=1, kieBase=binding-field-indexed-with-square-brackets, level=ERROR,
path=org/drools/reproducer/rules.drl, line=4, column=0
text=Unable to Analyse Expression /integerList[this.integerList.size()-1] ==
$firstItem:
[Error: Missing left node]
[Near : {... /integerList[this.integerList.size()-1] == $firstItem ....}]
{noformat}
Error with executable model:
{noformat}
Message [id=1, kieBase=binding-field-indexed-with-square-brackets, level=ERROR,
path=org/drools/reproducer/rules.drl, line=-1, column=0
text=Unknown field integerList on class java.lang.Integer]
{noformat}
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