If someone else is also permitted to contribute a few pointers: - You just mit the generic type parameter in DRL and all the files compiled into it, including decision tables. - Storing the List tasks as a global variable could be helpful, but I don't see any reason for it when your rules should determine something about the individual list elements. Data stored in a global variable is not triggering any rules. - If your rules should discover certain Task objects, then these objects should be inserted as facts.
HTH -W On 17 November 2011 22:55, Adrigan <lillian.and...@lmco.com> wrote: > Hello Edson, > > If the generic *<T>* is not allowed, and drools appears to be > written to > operate over collections of objects, how do you insert a List of items like > this: > *List<ProjectDataSet.Task> tasks*? In my code I insert the tasks as facts > like this: > *commands.add(CommandFactory.newInsertElements(tasks));* > I use a decision table and have as one of the variables: (in the variable > row) > *List<ProjectDataSet.Task> tasks*. > > The error I receive is this: > /org.drools.template.parser.DecisionTableParseException: The format for > global variables is incorrect. It should be: [Class name, Class otherName]. > But it was: [List<ProjectDataSet.Task> tasks] > at > > org.drools.decisiontable.parser.RuleSheetParserUtil.getVariableList(RuleSheetParserUtil.java:84)/ > > I desire the rules in the table to iterate through all the tasks in > that > list and identify tasks that are due soon (a part of my condition column > *TASKACTSTART< today* … etc. The TASKACTSTART is a field named by > Microsoft > in the ProjectDataSet.Task class.) > > Have I misunderstood the power of drools? How do you address a > collection > of a type like List<T> in a rule? > > Thank you in advance for your help, > Adrigan > > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/rules-users-How-to-handle-generics-in-Drools-tp3427723p3517186.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users >
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