searching for a rule engine that compiles rules, no reflection

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NOBODY - 12 Apr 2006 23:52 GMT

Hi,

Does anyone have heard of rules engines (could be really basic ones) that
generates byte code to perform the evaluations instead of
using reflection and interpretation?

I have searched a while, but the docs are always about features, not so
much implementations.

Thanks.

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Roedy Green - 13 Apr 2006 05:38 GMT

>Does anyone have heard of rules engines (could be really basic ones) that
>generates byte code to perform the evaluations instead of
>using reflection and interpretatio

See http://mindprod.com/jgloss/rules.html
for a long list of rules engines. I don't know which might work that
way.

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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Koos Pol - 13 Apr 2006 14:05 GMT

> See http://mindprod.com/jgloss/rules.html
> for a long list of rules engines. I don't know which might work that
> way.

Not Found
The requested URL /jgloss/rules.html was not found on this server.
Apache/2.0.55 (NETWARE) mod_perl/1.99_12 Perl/v5.8.4 Server at mindprod.com
Port 80

Koos

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43rd Law of Computing: Anything that can go wr
fortune: Segmentation violation -- Core dumped

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Roedy Green - 13 Apr 2006 21:26 GMT

>> See http://mindprod.com/jgloss/rules.html
>> for a long list of rules engines. I don't know which might work that
>> way.
>
>Not Found

try http://mindprod.com/jgloss/rule.html

Whever I screw up, just look up the word in the index. It will
usually be a typo, a pluralisation error or part of speech.

see http://mindprod.com/jgloss/jgloss.html

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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Koos Pol - 14 Apr 2006 17:07 GMT

> try http://mindprod.com/jgloss/rule.html
>
> Whever I screw up, just look up the word in the index. It will
> usually be a typo, a pluralisation error or part of speech.

I knew that :-) I was just triggering a response from you to keep the
archives (Google!) happy.

Cheers,
Koos

Signature

43rd Law of Computing: Anything that can go wr
fortune: Segmentation violation -- Core dumped

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NOBODY - 19 Apr 2006 00:29 GMT

> try http://mindprod.com/jgloss/rule.html

After a lot of browsing, I hit something even better (for me) than rules
engine:

BCEL, Javassist, and Janino.

BCEL is a byte code engineering library.

Javassist and janino can create/augment classes from standard sourcecode
snippets.

All very powerful to translate user made expressions into fullspeed java
code. Seem a branch of 'Drools' (the 'Groovy' project) is using one of
these.

There is no mention of security manager constraints, so watch out.

Have fun!

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searching for a rule engine that compiles rules, no reflection

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