If someone else is also permitted to contribute a few pointers:<br><ul><li>You just mit the generic type parameter in DRL and all the files compiled into it, including decision tables.</li><li>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.</li>
<li>If your rules should discover certain Task objects, then these objects should be inserted as facts.</li></ul>HTH<br>-W<br><br><div class="gmail_quote">On 17 November 2011 22:55, Adrigan <span dir="ltr"><<a href="mailto:lillian.andres@lmco.com">lillian.andres@lmco.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello Edson,<br>
<br>
If the generic *<T>* is not allowed, and drools appears to be written to<br>
operate over collections of objects, how do you insert a List of items like<br>
this:<br>
*List<ProjectDataSet.Task> tasks*? In my code I insert the tasks as facts<br>
like this:<br>
*commands.add(CommandFactory.newInsertElements(tasks));*<br>
I use a decision table and have as one of the variables: (in the variable<br>
row)<br>
*List<ProjectDataSet.Task> tasks*.<br>
<br>
The error I receive is this:<br>
/org.drools.template.parser.DecisionTableParseException: The format for<br>
global variables is incorrect. It should be: [Class name, Class otherName].<br>
But it was: [List<ProjectDataSet.Task> tasks]<br>
at<br>
org.drools.decisiontable.parser.RuleSheetParserUtil.getVariableList(RuleSheetParserUtil.java:84)/<br>
<br>
I desire the rules in the table to iterate through all the tasks in that<br>
list and identify tasks that are due soon (a part of my condition column<br>
*TASKACTSTART< today* … etc. The TASKACTSTART is a field named by Microsoft<br>
in the ProjectDataSet.Task class.)<br>
<br>
Have I misunderstood the power of drools? How do you address a collection<br>
of a type like List<T> in a rule?<br>
<br>
Thank you in advance for your help,<br>
Adrigan<br>
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