[rules-users] Drools 5 migration

[Edson Tirelli]

   Hi Steven,

   In Drools 5 we had to change this behavior because Drools 4 did not
processed escaped characters in regular strings. Drools 5 does. For
instance: in Drools 4, if you write:

"Something\n"

   The string you get is exactly the same as you wrote, but in Drools 5, the
\n is converted into the CR character.

   So, my recommendation is for you to update your rules escaping the
characters, BUT if you do want to keep them as they were in Drools 4, there
is a configuration option to keep it backward compatible:

PackageBuilderConfiguration.setProcessStringEscapes( boolean )

true == behaves as drools 5 (default)
false == behaves as drools 4

    Alternatively you can use the following property configuration:

drools.parser.processStringEscapes = true|false

   []s
   Edson

2009/1/8 Steven Williams <stevearoonie at gmail.com>

> Hi guys,
>
> I have migrated my code over to Drools 5 and now regular expressions have
> to be escaped. e.g. where previously I had
>
> name matches "^\s*$"
>
> instead I have to put
>
> name matches "^\\s*$"
>
> Is this a bug or am I missing a setting or something? I am running against
> the 5 snapshot.
>
> thanks
> Steve
> --
> Steven Williams
>
> Supervising Consultant
>
> Object Consulting
> Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
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>
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-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss, a division of Red Hat @ www.jboss.com
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