9:48 p.m.
Hello,
first sorry for my bad english.
I want to declare a variable of type List
rule "userrole"
when
$user1: User (userid1: userId)
$user2: User (userId == userid1)
then
List L = new ArrayList();
if (L.contains($user1.getname())== false)
{
L.add($user1.getname());
System.out.println("hello");
}
end
the problem is everytime the List don't save all element every execution the variable
list is intialised as empty is there other place to declare List?
(I try after when but error of parsing)
---------------------------------
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10:03 p.m.
fakhfakh ismail's message received 5/14/2007 3:48 PM:
Hello,
first sorry for my bad english.
I want to declare a variable of type List
rule "userrole"
when
$user1: User (userid1: userId)
$user2: User (userId == userid1)
then
List L = new ArrayList();
if (L.contains($user1.getname())== false)
{
L.add($user1.getname());
System.out.println("hello");
}
end
the problem is everytime the List don't save all element every execution
the variable list is intialised as empty is there other place to
declare List?
(I try after when but error of parsing)
You need to declare the List in your Java code, set it as a Drools global, and declare it
in the DRL
file:
In yourjava.java:
-----------
workingMemory.setGlobal("L", new java.util.List());
-----------
in yourdrl.drl:
-----------
global java.util.List L;
rule "userrole"
when
$user1: User (userid1: userId)
$user2: User (userId == userid1)
then
if (L.contains($user1.getname())== false)
{
L.add($user1.getname());
System.out.println("hello");
}
end
-----------
Wouldn't it be great to have a "static" section in the DRL syntax for
temporaries like this?
9:45 a.m.
New subject: RE : Re: declare variable
hello
first thank you for your help.
But I don't know how declare the wariable.
workingMemory.setGlobal("L", new java.util.List());
the code used to execute my rule is :
public List fireRules(List dataObjects, InputStream rules) throws Exception {
// obtain the rule service provider
RuleServiceProviderManager.registerRuleServiceProvider(
"org.drools.jsr94.rules.RuleServiceProviderImpl",
org.drools.jsr94.rules.RuleServiceProviderImpl.class);
RuleServiceProvider service =
RuleServiceProviderManager.getRuleServiceProvider(
"org.drools.jsr94.rules.RuleServiceProviderImpl");
// load the rule adminstrator
RuleAdministrator admin = service.getRuleAdministrator();
// load the rules and register them
RuleExecutionSet res1 =
admin.getLocalRuleExecutionSetProvider( null ).
createRuleExecutionSet( rules, null );
rules.close();
String bindUri = "res:://sample.drl";
admin.registerRuleExecutionSet(bindUri, res1, null);
// obtain a rule runtime object from the rule service provider
RuleRuntime runtime = service.getRuleRuntime();
// create a stateless object from the Rule Runtime
StatelessRuleSession session = (StatelessRuleSession)
runtime.createRuleSession(bindUri, null, RuleRuntime.STATELESS_SESSION_TYPE);
List resultRules = session.executeRules(dataObjects);
//session.
session.release();
// workingMemory.setGlobal("L", new java.util.List());
return resultRules;
}
please help me,
best regards
Ismail
Scott Reed <sreed(a)spamcop.net> a écrit : fakhfakh ismail's message received
5/14/2007 3:48 PM:
Hello,
first sorry for my bad english.
I want to declare a variable of type List
rule "userrole"
when
$user1: User (userid1: userId)
$user2: User (userId == userid1)
then
List L = new ArrayList();
if (L.contains($user1.getname())== false)
{
L.add($user1.getname());
System.out.println("hello");
}
end
the problem is everytime the List don't save all element every execution
the variable list is intialised as empty is there other place to
declare List?
(I try after when but error of parsing)
You need to declare the List in your Java code, set it as a Drools global, and declare it
in the DRL
file:
In yourjava.java:
-----------
workingMemory.setGlobal("L", new java.util.List());
-----------
in yourdrl.drl:
-----------
global java.util.List L;
rule "userrole"
when
$user1: User (userid1: userId)
$user2: User (userId == userid1)
then
if (L.contains($user1.getname())== false)
{
L.add($user1.getname());
System.out.println("hello");
}
end
-----------
Wouldn't it be great to have a "static" section in the DRL syntax for
temporaries like this?
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4:22 p.m.
New subject: RE : Re: declare variable
Check the Drools documentation section 6.2.2.1. Globals.
6242
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6243
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3 comments
2 participants
participants (2)
-
fakhfakh ismail -
Scott Reed