I'am using Drools in a web app running under JBoss with JDK1.4, and I MUST stay in jdk1.4. That's why I get these issues because for some reason Drools want to use java.lang.Integer.valueOf(int) which is available only in java5 !!! (drools is supposed to work on jdk1.4 + ...) Carl -----Message d'origine----- De : rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] De la part de Hehl, Thomas Envoyé : jeudi 8 mai 2008 10:59 À : 'Rules Users List' Objet : RE: [rules-users] Newbie question / NoSuchMethodError error I'm not entirely sure I understand what you're saying, but you could write a new property that stores the int value and takes and returns a String. Anyway, glad you figured it out. -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Cabou, Carl Sent: Thursday, May 08, 2008 10:41 AM To: Rules Users List Subject: RE: [rules-users] Newbie question / NoSuchMethodError error Thomas, I can not move the headings since I do receive "0 - 50" as a String and then I have to return an Integer. I've made a little program beside this to test my rule, I've launched it using java5, it worked fine, but it does crash using java1.4. I just found out the Integer.valueOf(int) is a new feature of java5. So I guess I must try to run my web application using java5. Carl. -----Message d'origine----- De : rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] De la part de Hehl, Thomas Envoyé : jeudi 8 mai 2008 10:20 À : 'Rules Users List' Objet : RE: [rules-users] Newbie question / NoSuchMethodError error No, really, java uses the valueOf methods internally to try to convert the object specified (a String) into an Integer so it can do the comparison. You can't do selected == "0 - 50" because "0 - 50" is a String and you cant compare it to an Integer. So what are you trying to do? If you want selected to be in the range between 0 and 50 inclusive, then you need to change the heading in your decision table. Here's an example: daysBeforeSummons >= $1, daysBeforeSummons <= $2 and then you specify the data in your column as 0,50. Good luck! -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Cabou, Carl Sent: Thursday, May 08, 2008 10:12 AM To: Rules Users List Subject: RE: [rules-users] Newbie question / NoSuchMethodError error Thank you for answering Thomas. Here is the code below, nothing fancy: public void setSelected (Integer calculatedSetSelected) { this. calculatedSetSelected = calculatedSetSelected; } In fact, the problem IS that it is taking an Integer and some Drools Internal method want to convert it using Integer.valueOf, but there is no Integer.valueOf taking Integer. There is something weird, in the stack trace, I get : Caused by: java.lang.NoSuchMethodError: java.lang.Integer.valueOf(I)Ljava/lang/Integer; at AL_Calculation.Rule_ setSelecte_10_0.consequence(Unknown Source) There is a missing "d" before "_10" ... Carl -----Message d'origine----- De : rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] De la part de Hehl, Thomas Envoyé : jeudi 8 mai 2008 09:35 À : 'Rules Users List' Objet : RE: [rules-users] Newbie question / NoSuchMethodError error Yep. Post the code for setSelected(). I'm guessing it takes an Integer or int and you're passing it a String. -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Cabou, Carl Sent: Thursday, May 08, 2008 9:23 AM To: rules-users(a)lists.jboss.org Subject: [rules-users] Newbie question / NoSuchMethodError error Greetings, I'm new to Drools and I've written a decision table based rule using excel. The rule validates ok and I've deployed my package fine. I've written a piece of code to test my rules, I want to set the calculatedRate to 125 when I get selected field equal to "0 - 50" : ... StatelessSession statelessSession = rb.newStatelessSession(); Data data=new Data(); data.setSelected("0 - 50"); statelessSession.execute(data); // set private Integer field ... When I run the code I get a exeption : java.lang.NoSuchMethodError: java.lang.Integer.valueOf(I)Ljava/lang/Integer; I don't understand why Drools tries to convert to Integer something which is already Integer !!!! ----------- Here is the rules code. rule "setCalculateRate_11" salience 65525 when Data(selected == "0 - 50") then object.setCalculatedRate(125); end -------------- The CalculatedRate field is a java.lang.Integer object. Does anybody has an idea ?? Regards, Carl. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users