<div dir="ltr"><br> As an update, MVEL author fixed this and will do an MVEL release soon. When he does, we will test here and let you know, but you should be able to simply replace MVEL jar and it will work.<br><br> []s<br>
Edson<br><br><div class="gmail_quote">2008/7/29 Edson Tirelli <span dir="ltr"><<a href="mailto:tirelli@post.com">tirelli@post.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div dir="ltr"><br> Hi Thomas and all,<br><br> Drools delegates most of the complex expression evaluation to MVEL and it seems that it currently does not support variables as indexes in the map/collection simplified syntax. So, it will not work for now. <br>
The good news is that we work very close with MVEL's author and if we kindly ask him (translation: offer him a few drinks and/or gifts) :) he usually adds support to such things.. ;) if so, just upgrading MVEL dependency jar will be enough to make it work, no need for a new drools release (hopefully). I will talk to him.<br>
<br> Meanwhile, tip for the curious: MVEL has a shell tool quite useful to play and check such things. Just run org.mvel.MVELSH having the MVEL jar in your classpath and you can play with it:<br><br>Welcome to MVEL!<br>
mvel$ x = new java.util.HashMap()<br>OUT: {}<br>mvel$ x["a"] = "p"<br>OUT: p<br>mvel$ v="b"<br>OUT: b<br>mvel$ x[v]="q"<br>org.mvel.PropertyAccessException: unable to resolve property: failed to access property: <<v>> in: class java.util.HashMap<br>
ERROR: unable to resolve token: v<br>mvel$ w=10<br>OUT: 10<br>mvel$ x[w]="r"<br>org.mvel.PropertyAccessException: unable to resolve property: failed to access property: <<w>> in: class java.util.HashMap<br>
mvel$ x[10]="r"<br>OUT: r<br>mvel$ x<br>OUT: {a=p, 10=r}<br>mvel$ <br><br> []s<br> Edson<br><br><br><div class="gmail_quote">2008/7/24 thomas kukofka <span dir="ltr"><<a href="mailto:thomaskukofka@web.de" target="_blank">thomaskukofka@web.de</a>></span><div>
<div></div><div class="Wj3C7c"><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div dir="ltr"><br>Thanks,<br><br>but I've still Problems if I try to use <br>io: InputObject ( stringParameters[InputObject.<div dir="ltr">
Parameter.ParameterName] == "something") <br><br>=>Field/method 'InputObject' not found for class 'com.rules.InputObject'Rule Compilation error<br>
<br>Parameter is an enum witch contains all allowed Parameters of InputObject<br><br>Kind Regards<br>Thomas</div><br><div class="gmail_quote">2008/7/23 Edson Tirelli <<a href="mailto:tirelli@post.com" target="_blank">tirelli@post.com</a>>:<div>
<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div dir="ltr"><br><br> If you make your map available through a get, you can use simplified Map syntax like this:<br>
<br>public Map getStringParameters() {<br><div dir="ltr">
return stringParameter;<br> }</div><br> <br>io: InputObject ( stringParameters["propertyname"] == "something") <br><br> []s<br> Edson<br><br><div class="gmail_quote">2008/7/23 thomas kukofka <<a href="mailto:thomaskukofka@web.de" target="_blank">thomaskukofka@web.de</a>>:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div><div dir="ltr">Hello ,<br><br>I just recognized, that this doesn't work. But it is possible to use plain Java code in the rule, also if-conditions and for and while-loops etc.. However more Java code makes the rule less readable and elegant.<br>
Is there another possibility to use generic input objects?<br><br>Thomas<br><br><br></div>
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<br></blockquote></div><font color="#888888"><br><br clear="all"><br>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss, a division of Red Hat @ <a href="http://www.jboss.com" target="_blank">www.jboss.com</a>
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<br></blockquote></div></div></div><div><div></div><div class="Wj3C7c"><br><br clear="all"><br>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss, a division of Red Hat @ <a href="http://www.jboss.com" target="_blank">www.jboss.com</a><br>
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</blockquote></div><br><br clear="all"><br>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss, a division of Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><br>
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