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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks..<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Edson Tirelli<br>
<b><span style='font-weight:bold'>Sent:</span></b> 15 July 2009 14:57<br>
<b><span style='font-weight:bold'>To:</span></b> Rules Users List<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [rules-users] Getting
hold of the Evaluator Registry</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
Yes, you are in the right track, and I understand this is a bit
confusing at first. One more reason for people to go to the October Rules Fest
2009 where I will give a presentation on all the ways to extend the engine to
solve specific problems. It will be interesting I hope (last year was awesome)
and even Charles Forgy will be there doing a presentation on Parallel Rete. :)<br>
<br>
Meanwhile I will write a tutorial on this, but just to help
you there, your approach is correct, except that you don't need to setup the
option for each operator. It works like this:<br>
<br>
* One EvaluatorDefinition class implements support to one or more evaluators,
defined by the method public String[] getEvaluatorIds().<br>
<br>
* All you need to do, then, is wire you class once and the engine will pick-up
all the IDs supported by that class. When you have your class wired, you give
it a unique string identifier, so that if you ever need to replace it, or
remove it, you will use that id. Sometimes we use the operator as the ID, but
usually it is something that reminds you of the kind of evaluators that class
define. For instance, drools registers the ComparableEvaluatorsDefinition in
this way:<br>
<br>
drools.evaluator.comparable =
org.drools.base.evaluators.ComparableEvaluatorsDefinition<br>
<br>
So in this case, "comparable" is the identifier. Finally, from
my previous e-mail you will see that the reason that the eclipse IDE is still
giving you errors is that you are using the API to configure the evaluators.
Just move the configuration to the configuration file and the IDE will pick it
up.<br>
<br>
[]s<br>
Edson<br>
<br>
<br>
<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>2009/7/15 Asif Iqbal <<a href="mailto:Asif.Iqbal@infor.com">Asif.Iqbal@infor.com</a>><o:p></o:p></span></font></p>
<div link=blue vlink=blue>
<div>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Edson,</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>What I have done so far is created a
CustomComparableEvaluatorsDefinition, which is exactly the same as the default
ComparableEvaluatorsDefinition apart form having support for strings, which I
have done by creating StringGreaterOrEqualEvaluators and added that in my
custom class, using the addEvaluatorFunction :-</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.SHORT_TYPE,
Operator.GREATER,
ShortGreaterEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator(
ValueType.SHORT_TYPE,
Operator.GREATER_OR_EQUAL,
ShortGreaterOrEqualEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.PSHORT_TYPE,
Operator.LESS,
ShortLessEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.PSHORT_TYPE,
Operator.LESS_OR_EQUAL,
ShortLessOrEqualEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.PSHORT_TYPE,
Operator.GREATER,
ShortGreaterEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.PSHORT_TYPE,
Operator.GREATER_OR_EQUAL,
ShortGreaterOrEqualEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
//Custom additions</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.STRING_TYPE,
Operator.LESS,
StringLessEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.STRING_TYPE,
Operator.LESS_OR_EQUAL,
StringLessOrEqualEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.STRING_TYPE,
Operator.GREATER,
StringGreaterEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>
addEvaluator( ValueType.STRING_TYPE,
Operator.GREATER_OR_EQUAL,
StringGreaterOrEqualEvaluator.INSTANCE );</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Now Im am trying to wire it, with the following.. </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
CustomComparableEvaluatorsDefinition MyCustomComparable custom = <b><span
style='font-weight:bold'>new</span></b> CustomComparableEvaluatorsDefinition();</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
KnowledgeBuilderConfiguration config = KnowledgeBuilderFactory.<i><span
style='font-style:italic'>newKnowledgeBuilderConfiguration</span></i>();</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
EvaluatorOption option = EvaluatorOption.<i><span style='font-style:italic'>get</span></i>(<u>Operator.<i><span
style='font-style:italic'>LESS</span></i>.toString()</u>, custom);</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
EvaluatorOption option2 = EvaluatorOption.<i><span style='font-style:italic'>get</span></i>(<u>Operator.<i><span
style='font-style:italic'>LESS_OR_EQUAL</span></i>.toString()</u>, custom);</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
EvaluatorOption option3 = EvaluatorOption.<i><span style='font-style:italic'>get</span></i>(<u>Operator.<i><span
style='font-style:italic'>GREATER</span></i>.toString()</u>, custom);</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
EvaluatorOption option4 = EvaluatorOption.<i><span style='font-style:italic'>get</span></i>(<u>Operator.<i><span
style='font-style:italic'>GREATER_OR_EQUAL</span></i>.toString()</u>, custom);</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
config.setOption(option);</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
config.setOption(option2);</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
config.setOption(option3);</span></font><o:p></o:p></p>
<p><font size=2 color="#333399" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#333399'>
config.setOption(option4);</span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Firstly is this the correct approach?....</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>The problem im having is that in my drl files still flag
errors, when I do “test” > “test2” , am I missing something?</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Regards</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center>
</span></font></div>
<p><b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
font-weight:bold'>From:</span></font></b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'> <a
href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>
[mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Asif Iqbal<br>
<b><span style='font-weight:bold'>Sent:</span></b> 15 July 2009 08:20<br>
<b><span style='font-weight:bold'>To:</span></b> Rules Users List<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [rules-users] Getting
hold of the Evaluator Registry</span></font><o:p></o:p></p>
</div>
<div>
<div>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Edson,</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Thanks for your replies they have really helped. </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p style='margin-left:.5in;text-indent:-.25in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>1)</span></font><font
size=1 color=navy><span style='font-size-adjust: none;font-stretch: normal'><span
style='font-size:7.0pt;color:navy'> </span></span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>I am still not sure about creating a new operator, since the
‘>=’ operator already exists it just does not cater for strings, which I
want to add. So would creating a new operator cause the existing one to be
overrriden when added to the registry? </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p style='margin-left:.5in;text-indent:-.25in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>2)</span></font><font
size=1 color=navy><span style='font-size-adjust: none;font-stretch: normal'><span
style='font-size:7.0pt;color:navy'> </span></span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Having looked at the examples and tests you emailed, I am still
unsure how to actually wire in the changes, say for example I have replaced the
existing ‘>=’ evaluator or created a new evaluator so that ‘>=’ now
handles strings. When writing rules will the engine pick this up?.. or do I
need to create a new jar by building?.. or do I need to update a configuration
file?... im just not sure…</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p style='margin-left:.5in;text-indent:-.25in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>3)</span></font><font
size=1 color=navy><span style='font-size-adjust: none;font-stretch: normal'><span
style='font-size:7.0pt;color:navy'> </span></span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Wouldn’t the following also add the evaluator definition by
replacing the existing one.. </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
<u>PackageBuilderConfiguration</u> pkgb = </span></font><b><u><font size=2
color="#7f0055" face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:#7F0055;font-weight:bold'>new</span></font></u></b><u><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'> PackageBuilderConfiguration()</span></font></u><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>;
</span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
<u>pkgb.getEvaluatorRegistry()</u>.<u>addEvaluatorDefinition</u>(</span></font><b><font
size=2 color="#7f0055" face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055;font-weight:bold'>new </span></font></b><font
size=2 color=black face="Courier New"><span style='-moz-background-clip: border;
-moz-background-origin: padding;-moz-background-inline-policy: continuous;
background-attachment:scroll;background-position-x:0%;background-position-y:
0%'><span style='font-size:10.0pt;font-family:"Courier New";color:black;
background:silver'>ComparableEvaluatorsDefinition</span></span></font><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>());</span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
<u><span style='-moz-background-clip: border;-moz-background-origin: padding;
-moz-background-inline-policy: continuous;background-attachment:scroll;
background-position-x:0%;background-position-y:0%'><span style='background:
silver'>PackageBuilder</span></span></u> builder = </span></font><b><u><font
size=2 color="#7f0055" face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055;font-weight:bold'>new</span></font></u></b><u><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'> <span style='background:silver'><span
style='-moz-background-clip: border;-moz-background-origin: padding;-moz-background-inline-policy: continuous;
background-attachment:scroll;background-position-x:0%;background-position-y:
0%'>PackageBuilder</span></span>(pkgb)</span></font></u><font size=2
color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>;</span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
<u>builder.addPackageFromDrl(source)</u>;</span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
<u>Package</u> pkg = <u>builder.getPackage()</u>;</span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
</span></font><font size=2 color="#3f7f5f" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>// Add the
package to a <u>rulebase</u> (deploy the rule package).</span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
</span></font><font size=2 color="#0000c0" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>rules</span></font><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'> = <u>RuleBaseFactory.<i><span style='font-style:
italic'>newRuleBase</span></i>()</u>;</span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
</span></font><u><font size=2 color="#0000c0" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>rules</span></font></u><u><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>.addPackage(pkg)</span></font></u><font size=2
color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>;</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Thanks for your help…</span></font><o:p></o:p></p>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'> </span></font><o:p></o:p></p>
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<p><b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
font-weight:bold'>From:</span></font></b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'> <a
href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>
[mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Edson Tirelli<br>
<b><span style='font-weight:bold'>Sent:</span></b> 14 July 2009 23:05<br>
<b><span style='font-weight:bold'>To:</span></b> Rules Users List<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [rules-users] Getting
hold of the Evaluator Registry</span></font><o:p></o:p></p>
</div>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p style='margin-bottom:12.0pt'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><br>
I am working in one example of drools features where I implement a
custom evaluator here:<br>
<br>
<a
href="http://anonsvn.jboss.org/repos/labs/labs/jbossrules/contrib/lotrc/src/main/java/org/drools/examples/lotrc/evaluators/IsAdjacentToEvaluatorDefinition.java"
target="_blank">http://anonsvn.jboss.org/repos/labs/labs/jbossrules/contrib/lotrc/src/main/java/org/drools/examples/lotrc/evaluators/IsAdjacentToEvaluatorDefinition.java</a><br>
<br>
I use the configuration file instead of API in the example:<br>
<br>
<a
href="http://anonsvn.jboss.org/repos/labs/labs/jbossrules/contrib/lotrc/src/main/resources/META-INF/drools.packagebuilder.conf"
target="_blank">http://anonsvn.jboss.org/repos/labs/labs/jbossrules/contrib/lotrc/src/main/resources/META-INF/drools.packagebuilder.conf</a><br>
<br>
[]s<br>
Edson<o:p></o:p></span></font></p>
<div>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>2009/7/14
Edson Tirelli <<a href="mailto:tirelli@post.com" target="_blank">tirelli@post.com</a>><o:p></o:p></span></font></p>
<p style='margin-bottom:12.0pt'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><br>
Asif,<br>
<br>
My recommendation is create a new operator for you instead of
overriding existing ones. Although if you really want to replace the existing
ones, setting the property or calling the API to register a new operator will
override the default.<br>
<br>
See:<br>
<br>
<a
href="http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/builder/KnowledgeBuilderConfigurationTest.java"
target="_blank">http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/builder/KnowledgeBuilderConfigurationTest.java</a><br>
<br>
Test method:<br>
<br>
testEvaluatorConfiguration()<br>
<br>
[]s<br>
Edson<o:p></o:p></span></font></p>
<div>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>2009/7/14
Asif Iqbal <<a href="mailto:Asif.Iqbal@infor.com" target="_blank">Asif.Iqbal@infor.com</a>><o:p></o:p></span></font></p>
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<div link=blue vlink=purple>
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<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'>Hi,</span><o:p></o:p></font></p>
<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'> </span><o:p></o:p></font></p>
<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'>What
I need to do is modify one of the evaluator classes specifically ‘<=’, so
that it can handle strings. Now I know I need to create a class similar to
ComparableEvaluatorDefinition. But what I want to do is replace the existing
one in the evaluator registry with my implementation which will include the
additional String capability.</span><o:p></o:p></font></p>
<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'> </span><o:p></o:p></font></p>
<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'>From
my understanding that should be all that is required. Unless im missing
something… now all I need to know is how do I get hold of the evaluator
registry?</span><o:p></o:p></font></p>
<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'> </span><o:p></o:p></font></p>
<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'>Cheers</span><o:p></o:p></font></p>
<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'> </span><o:p></o:p></font></p>
<p><font size=3 face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'>I</span><o:p></o:p></font></p>
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<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
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<p style='margin-bottom:12.0pt'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>_______________________________________________<br>
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<p><font size=3 color="#888888" face="Times New Roman"><span style='font-size:
12.0pt;color:#888888'><br>
<br clear=all>
<br>
-- <br>
Edson Tirelli<br>
JBoss Drools Core Development<br>
JBoss by Red Hat @ <a href="http://www.jboss.com" target="_blank">www.jboss.com</a></span></font><o:p></o:p></p>
</div>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><br>
<br clear=all>
<br>
-- <br>
Edson Tirelli<br>
JBoss Drools Core Development<br>
JBoss by Red Hat @ <a href="http://www.jboss.com" target="_blank">www.jboss.com</a><o:p></o:p></span></font></p>
</div>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
_______________________________________________<br>
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<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" target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br clear=all>
<br>
-- <br>
Edson Tirelli<br>
JBoss Drools Core Development<br>
JBoss by Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><o:p></o:p></span></font></p>
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