how to express one object is null when I use drools rule engine

how to express one object is null when I use drools rule engine



1.how to express one object is null when I use drools rule ...

Description:I want to know how can I express one object is null on the
left hand side when I use drools rule engine? And anybody can tell me how
to use the drools keyword "not ...



2.Chapter 5. The Rule Language - JBoss

Description:If you use the Rule ... 1: package org.drools; 2: 3: rule ...
and the technical intricacies resulting from the modelling of domain
object and the rule engine's ...



3.Chapter 1. The Rule Engine - JBoss

Description:Drools is a Rule Engine that uses the ... If this is the
reason you wish to use a rule engine, ... Strongly coupled in this sense
means that one rule ...



4.1.6. The Drools Rule Engine - Group: Japan JBUG | Community

Description:1.6. The Drools Rule Engine. 1.6 ... To use the Object in
dynamic mode specify ... to facts and when they should notify the rule
engine. As of Drools 3 ...



5.1.2. Why use a Rule Engine? - Group: Japan JBUG | Community

Description:1.2. Why use a Rule Engine? Prev ... make it easy to express
solutions to difficult ... you would use a rule engine to contain ...



6.drools - how to write dsl condition with null check ...

Description:If basicInfo.permanentResidenceDuration == null assign 0 ...
Issues using retract in then condition of a rule. ... how to express one
object is null when I use drools ...



7.JBoss Drools Tutorial - drools - JBoss application server ...

Description:The term Rule Engine ... JBoss Drools rules can make it easy
to express ... MVEL's syntax allows you to apply a block of setters in one
statement, with the engine ...



8.Frameworks All the Way Down

Description:... then maybe you should consider a rule engine such as
Drools. ... When Should I Use a Rule Engine? ... //create this object if
it is null if ...



9.User list for Drools rule engine ()

Description:User list for Drools rule engine () ... 10.0 Expected is one
more: BookingService can return NULL qty ... how to > express this
expression in Drools DSL. > > A ...



10.Rules based Programming with JBoss RulesDrools

Description:... using a rule engine allows you the benefits of declarative
... I'm working with Drools 4.0.1. ... So I would really recommend you use
the Drools api ...