[rules-users] help! rulerule_key failed to predicate
hello,everyone! I wrote a rule with Drools, I compile the program and get the
errors as follows:
[3,0]: [ERR 103] Line 3:0 rule 'rule_key' failed predicate:
{(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule
[3,9]: [ERR 101] Line 3:9 no viable alternative at input 'com' in rule package
[7,0]: [ERR 101] Line 7:0 no viable alternative at input 'import' in rule
package in rule sample
I don't know how it happened, looking forward to your reply! thank you !!!
PS: My rules are here:
dialect mvel
package com.sample
import com.sample.Server;
rule system will execute 'tc' command
when
eval(Server.Message8388608)
then
System.out.println(The network is so crowd that it needs repairing.);
Runtime.getRuntime().exec(tc);#give the authority and execute the tc
command
end
rule caution
when
eval(Server.Message==8388608)
then
System.out.println(caution!The network maybe will get blocked very
soon.);
end
rule fluent network
when
eval(Server.Message8388608)#conditions
then
System.out.println(the current network is very good);#actions
end
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Re: [rules-users] help! rulerule_key failed to predicate
Hi,
I thnik you might need to reposition dialect = mvel. The compiling error
will go away if you put it inside each of your rules. See example:
rule system will execute 'tc' command
when
dialect mvel
eval(Server.Message8388608)
then
System.out.println(The network is so crowd that it needs repairing.);
Runtime.getRuntime().exec(tc);#give the authority and execute the tc
command
end
rule caution
dialect mvel
when
eval(Server.Message==8388608)
then
System.out.println(caution!The network maybe will get blocked very
soon.);
end
rule fluent network
dialect mvel
when
eval(Server.Message8388608)#conditions
then
System.out.println(the current network is very good);#actions
end
Also, mvel is needed to make the eval statement work. In your case, it
might not be needed to work with eval at all.
WHEN Server.message should work as well. Providing you have an
attribute message in Server with a getter defined.
Regards,
Frank
赵慧 wrote:
hello,everyone! I wrote a rule with Drools, I compile the program and get
the errors as follows:
[3,0]: [ERR 103] Line 3:0 rule 'rule_key' failed predicate:
{(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule
[3,9]: [ERR 101] Line 3:9 no viable alternative at input 'com' in rule
package
[7,0]: [ERR 101] Line 7:0 no viable alternative at input 'import' in rule
package in rule sample
I don't know how it happened, looking forward to your reply! thank you !!!
PS: My rules are here:
dialect mvel
package com.sample
import com.sample.Server;
rule system will execute 'tc' command
when
eval(Server.Message8388608)
then
System.out.println(The network is so crowd that it needs
repairing.);
Runtime.getRuntime().exec(tc);#give the authority and execute the
tc command
end
rule caution
when
eval(Server.Message==8388608)
then
System.out.println(caution!The network maybe will get blocked
very soon.);
end
rule fluent network
when
eval(Server.Message8388608)#conditions
then
System.out.println(the current network is very good);#actions
end
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Re: [rules-users] help! rulerule_key failed to predicate
The package declaration must be first.
You don't have to insert the dialect attribute into each rule.
Please consult the manual when programming.
-W
2011/4/15 赵慧 zh...@hpnl.ac.cn
hello,everyone! I wrote a rule with Drools,
I compile the program and get the errors as follows:
[3,0]: [ERR 103] Line 3:0 rule 'rule_key' failed predicate:
{(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule
[3,9]: [ERR 101] Line 3:9 no viable alternative at input 'com' in rule
package
[7,0]: [ERR 101] Line 7:0 no viable alternative at input 'import' in rule
package in rule sample
I don't know how it happened, looking forward to your reply! thank you !!!
PS: My rules are here:
dialect mvel
package com.sample
import com.sample.Server;
rule system will execute 'tc' command
when
eval(Server.Message8388608)
then
System.out.println(The network is so crowd that it needs
repairing.);
Runtime.getRuntime().exec(tc);#give the authority and execute the
tc command
end
rule caution
when
eval(Server.Message==8388608)
then
System.out.println(caution!The network maybe will get blocked very
soon.);
end
rule fluent network
when
eval(Server.Message8388608)#conditions
then
System.out.println(the current network is very good);#actions
end
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Re: [rules-users] help! rulerule_key failed to predicate
How can we help you if you don't show us the text of your .drl file?
All I can see is that the DRL parser could not find rule (failing several
other alternatives) and then found the identifier com and didn't know what
to do with it.
This happens in line 4, position 0 (a misspelled import?) and 9 (com).
-W
2011/4/13 赵慧 zh...@hpnl.ac.cn
hi,thank you very much for helping me with the problem.nevertheless,I have
got another error. I compile the program and get the errors as follows:
[4,0]: [ERR 103] Line 4:0 rule 'rule_key' failed predicate:
{(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule
[4,9]: [ERR 101] Line 4:9 no viable alternative at input 'com' in rule
package
I don't know how it happened, looking forward to your reply! thank you !!!
Try adding 'dialect mvel' (no single quotes) after the rule name to the
top of each of the rules. I have seen this error before and doing this
resolved the issue.
hello,everyone!I wrote a rule with Drools,but the error told me that the
field Server.Message is not visible, I can't find how it happens. Please
help me, I am almost exhausted with it. thank you.
the rules are as follows:
package com.sample
import com.sample.Server;
rule system will execute 'tc' command
when
eval(Server.Message8388608)
then
System.out.println(The network is so crowd that it needs
repairing.);
Runtime.getRuntime().exec(tc);#execute the tc command end
rule caution
when
eval(Server.Message==8388608)
then
System.out.println(caution!The network maybe will get blocked
very soon.); end
rule fluent network
when
eval(Server.Message8388608)#conditions
then
System.out.println(the current network is very good);
#actions
end
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[rules-users] help! rulerule_key failed to predicate
hi,thank you very much for helping me with the problem.nevertheless,I have got
another error. I compile the program and get the errors as follows:
[4,0]: [ERR 103] Line 4:0 rule 'rule_key' failed predicate:
{(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule
[4,9]: [ERR 101] Line 4:9 no viable alternative at input 'com' in rule package
I don't know how it happened, looking forward to your reply! thank you !!!
Try adding 'dialect mvel' (no single quotes) after the rule name to the top
of each of the rules. I have seen this error before and doing this resolved
the issue.
hello,everyone!I wrote a rule with Drools,but the error told me that the
field Server.Message is not visible, I can't find how it happens. Please
help me, I am almost exhausted with it. thank you.
the rules are as follows:
package com.sample
import com.sample.Server;
rule system will execute 'tc' command
when
eval(Server.Message8388608)
then
System.out.println(The network is so crowd that it needs repairing.);
Runtime.getRuntime().exec(tc);#execute the tc command end
rule caution
when
eval(Server.Message==8388608)
then
System.out.println(caution!The network maybe will get blocked very
soon.); end
rule fluent network
when
eval(Server.Message8388608)#conditions
then
System.out.println(the current network is very good);
#actions
end
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