Re: [rules-users] template 101
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>
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
Attachments:
- attachment.html (text/html — 3.8 KB)