<br> Mark,<br><br> What is the status on MVEL stuff used in core? <br><br> []s<br> Edson<br><br><div><span class="gmail_quote">2007/4/6, vista2007 <<a href="mailto:my_vista2007@yahoo.com">my_vista2007@yahoo.com</a>
>:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>I implement the following logic using 3.1M edition,<br><br>package com.software.warehouse.rules.impl
;<br><br>#list any import classes here.<br>import com.software.warehouse.model.Item;<br>import com.software.warehouse.model.ItemCollect;<br><br><br>#declare any global variables here<br><br>global com.software.warehouse.model.ItemCollect
itemCollect;<br><br>rule "Rule 1"<br><br> salience 20<br> when<br> # itemCollect.getItemList() method returns a List of objects<br><br> m : Item(status == Item.ACTIVE
) from<br>itemCollect.getItemList()<br><br> then<br> m.setStatus(Item.INACTIVE);<br> System.out.println(m.getStatus());<br> end<br><br><br>It gave me the followin error.<br><br>
ObjectAsserted:<br>handle=[fid:1:1:com.software.warehouse.model.ItemCollect@12a3722];<br>object=com.software.warehouse.model.ItemCollect@12a3722]<br>org.mvel.PropertyAccessException: null pointer exception in property:<br>
itemCollect.getItemList().list()<br> at<br>org.mvel.optimizers.impl.refl.ReflectiveOptimizer.compileGetChain(ReflectiveOptimizer.java:137)<br> at<br>org.mvel.optimizers.impl.refl.ReflectiveOptimizer.optimize
(ReflectiveOptimizer.java:92)<br> at org.mvel.Token.getReducedValueAccelerated(Token.java:302)<br> at org.mvel.ExecutableAccessor.getValue(ExecutableAccessor.java:46)<br> at org.mvel.MVEL.executeExpression
(MVEL.java:173)<br> at<br>org.drools.base.dataproviders.MVELDataProvider.getResults(MVELDataProvider.java:43)<br> at org.drools.reteoo.FromNode.assertTuple(FromNode.java:61)<br> at<br>org.drools.reteoo.SingleTupleSinkAdapter.createAndPropagateAssertTuple
(SingleTupleSinkAdapter.java:55)<br> at<br>org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:147)<br> at<br>org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java
:20)<br> at<br>org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:163)<br> at org.drools.reteoo.Rete.assertObject(Rete.java:121)<br> at<br>org.drools.reteoo.ReteooRuleBase.assertObject(
ReteooRuleBase.java:196)<br> at<br>org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction.propagate(ReteooWorkingMemory.java:157)<br> at<br>org.drools.common.AbstractWorkingMemory.propagateQueuedActions
(AbstractWorkingMemory.java:998)<br> at<br>org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemory.java:733)<br><br><br>Can anyone please help me to slove this problum. Thank You.<br>--<br>View this message in context:
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Nabble.com</a>.<br><br>_______________________________________________<br>rules-users mailing list<br><a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br><a href="https://lists.jboss.org/mailman/listinfo/rules-users">
https://lists.jboss.org/mailman/listinfo/rules-users</a><br></blockquote></div><br><br clear="all"><br>-- <br> Edson Tirelli<br> Software Engineer - JBoss Rules Core Developer<br> Office: +55 11 3124-6000<br> Mobile: +55 11 9218-4151
<br> JBoss, a division of Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a>