<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
MVEL is currently only used for 'from', it should work fine for that
purpose.<br>
<br>
Mark<br>
Edson Tirelli wrote:
<blockquote
cite="mid:e6dd5ba30704060839r959cd44q37a85b29e22cfd53@mail.gmail.com"
type="cite"><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
moz-do-not-send="true" 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: <a moz-do-not-send="true"
href="http://www.nabble.com/3.1-M-Help-Needed-tf3535402.html#a9868300">http://www.nabble.com/3.1-M-Help-Needed-tf3535402.html#a9868300</a><br>
Sent from the drools - user mailing list archive at <a
moz-do-not-send="true" href="http://Nabble.com">
Nabble.com</a>.<br>
<br>
_______________________________________________<br>
rules-users mailing list<br>
<a moz-do-not-send="true" href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
<a moz-do-not-send="true"
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 moz-do-not-send="true"
href="http://www.jboss.com">www.jboss.com</a>
<pre wrap="">
<hr size="4" width="90%">
_______________________________________________
rules-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a>
<a class="moz-txt-link-freetext" href="https://lists.jboss.org/mailman/listinfo/rules-users">https://lists.jboss.org/mailman/listinfo/rules-users</a>
</pre>
</blockquote>
<br>
</body>
</html>