Using template you will see that the @{} is replaced "just as is" from the data (for example from a spreadsheet), so if you have a value in the example will be replaced as text in the rule and you will have something like this: if @{symbol} == "THE_SYMBOL" ==> rule "A stand alone rule THE_SYMBOL" dialect "mvel" when eval(THE_SYMBOL == "AAA") then System.out.println("this symbol is" + THE_SYMBOL) end ---------- So as you can see, the variable is no more a variable in the generated rule, just text, so if you wanna use it as a string, you should add double-quote (") your rule template should be something like this: rule "A stand alone rule @{symbol}" dialect "mvel" when eval("@{symbol}" == "AAA") then System.out.println("this symbol is" + "@{symbol}") end 2010/4/22 Stefan Marconi <stefan.marconi(a)gmail.com&gt; > Hi, > > just starting using drools and need to use templates but having error > messages (described in comments in the code below). > I checked the meaning of the error messages but still can't figure it out. > I modified an simple rule according to the template section of the drools > manual: btw I use the eclipse with the drools-core plugin. > > Thanks for your help. Stefan > > template header > symbol > > package com.test.processor; # [ERR 102] Line 4:26 mismatched input ';' > expecting 'identifier' in template header > template "test" > rule "A stand alone rule @{symbol}" > dialect "mvel" > when > eval(@{symbol} == "AAA") > then > System.out.println("this symbol is" + @{symbol}) > end > end template # Multiple markers at this line > # - [ERR 103] Line 13:0 rule 'rule_key' failed predicate: > {(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule > # - [ERR 101] Line 13:4 no viable alternative at input 'template' in rule > end > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- ----------------------------- Felipe Piccolini felipe.piccolini(a)gmail.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Im not sure if you can find a complete standalone example for this, but I think your problem now is with eval(). Can you copy your stackTrace here? I think you can not do eval( literal == literal), but you could make a function to test that if you wanna use eval and give the function the value of @{symbol} 2010/4/27 Stefan Marconi <stefan.marconi(a)gmail.com&gt; Hi Felipe, > > thank you for your reply. I have now added the extra quotes but to no > avail. I still get the same errors. > > Is there somewhere a stand-alone example with the compile instructions to > check that everything works? I have the impression that I'm having troubles > with the whole eclipse config and plugin. > > Thanks! Stefan > > > 2010/4/26 Felipe Piccolini <felipe.piccolini(a)gmail.com&gt; > > Using template you will see that the @{} is replaced "just as is" from the >> data (for example from a spreadsheet), so >> if you have a value in the example will be replaced as text in the rule >> and you will have something like this: >> >> if @{symbol} == "THE_SYMBOL" >> >> ==> >> >> rule "A stand alone rule THE_SYMBOL" >> dialect "mvel" >> when >> eval(THE_SYMBOL == "AAA") >> then >> System.out.println("this symbol is" + THE_SYMBOL) >> end >> ---------- >> >> So as you can see, the variable is no more a variable in the generated >> rule, just text, so if you wanna use it as a string, you should add >> double-quote >> (") >> >> your rule template should be something like this: >> >> >> rule "A stand alone rule @{symbol}" >> dialect "mvel" >> when >> eval("@{symbol}" == "AAA") >> then >> System.out.println("this symbol is" + "@{symbol}") >> end >> >> >> >> >> 2010/4/22 Stefan Marconi <stefan.marconi(a)gmail.com&gt; >> >>> Hi, >>> >>> just starting using drools and need to use templates but having error >>> messages (described in comments in the code below). >>> I checked the meaning of the error messages but still can't figure it >>> out. >>> I modified an simple rule according to the template section of the >>> drools manual: btw I use the eclipse with the drools-core plugin. >>> >>> Thanks for your help. Stefan >>> >>> template header >>> symbol >>> >>> package com.test.processor; # [ERR 102] Line 4:26 mismatched input ';' >>> expecting 'identifier' in template header >>> template "test" >>> rule "A stand alone rule @{symbol}" >>> dialect "mvel" >>> when >>> eval(@{symbol} == "AAA") >>> then >>> System.out.println("this symbol is" + @{symbol}) >>> end >>> end template # Multiple markers at this line >>> # - [ERR 103] Line 13:0 rule 'rule_key' failed predicate: >>> {(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule >>> # - [ERR 101] Line 13:4 no viable alternative at input 'template' in >>> rule end >>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >> >> >> -- >> ----------------------------- >> Felipe Piccolini >> felipe.piccolini(a)gmail.com >> >> _______________________________________________ >> 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 > > -- ----------------------------- Felipe Piccolini felipe.piccolini(a)gmail.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users