2:28 a.m.
Hello,
I want to use template rules. Here is my .drt file:
template header
ddeb
dfin
prix
package com.tarification
import java.util.Date ;
import tarification.Produit ;
import java.text.SimpleDateFormat;
function Date getDate(String pStrDate)
{
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
return sdf.parse(pStrDate) ;
}
template "tarification_produit"
rule "Periode(a){row.rowNumber}"
when
$p : Produit(id == 1, eval( dDeb.before( getDate("@{ddeb}") ) ) )
then
$p.setId(2) ;
$p.setPrix(@{prix}) ;
update( $p );
end
end template
I modified an example provided with Drools but encounter the following exception:
Exception in thread "main" org.drools.RuntimeDroolsException: Exception
executing predicate com.tarification.Rule_Periode2_0Predicate0Invoker@2110b61d
at org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:279)
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143)
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147)
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185)
at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146)
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046)
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001)
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
at tarification.TestTemplate.executeExample(TestTemplate.java:49)
at tarification.TestTemplate.main(TestTemplate.java:26)
Caused by: java.lang.NullPointerException
at com.tarification.Rule_Periode2_0.predicate0(Rule_Periode2_0.java:9)
at
com.tarification.Rule_Periode2_0Predicate0Invoker.evaluate(Rule_Periode2_0Predicate0Invoker.java:23)
at org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:272)
... 11 more
I am puzzle because when I copy the drl generated string in a drl file, everything works
fine.
Any idea ? Thank you in advance.
Regards,
Benoît
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4:41 a.m.
Can you post the "drl generated string" you are referring to?
-W
2010/3/10 Bertrand Grottier <b_grottier(a)hotmail.com>:
Hello,
I want to use template rules. Here is my .drt file:
template header
ddeb
dfin
prix
package com.tarification
import java.util.Date ;
import tarification.Produit ;
import java.text.SimpleDateFormat;
function Date getDate(String pStrDate)
{
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
return sdf.parse(pStrDate) ;
}
template "tarification_produit"
rule "Periode(a){row.rowNumber}"
when
$p : Produit(id == 1, eval( dDeb.before( getDate("@{ddeb}") ) ) )
then
$p.setId(2) ;
$p.setPrix(@{prix}) ;
update( $p );
end
end template
I modified an example provided with Drools but encounter the following
exception:
Exception in thread "main" org.drools.RuntimeDroolsException: Exception
executing predicate
com.tarification.Rule_Periode2_0Predicate0Invoker@2110b61d
at
org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:279)
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143)
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147)
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
at
org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185)
at
org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
at tarification.TestTemplate.executeExample(TestTemplate.java:49)
at tarification.TestTemplate.main(TestTemplate.java:26)
Caused by: java.lang.NullPointerException
at com.tarification.Rule_Periode2_0.predicate0(Rule_Periode2_0.java:9)
at
com.tarification.Rule_Periode2_0Predicate0Invoker.evaluate(Rule_Periode2_0Predicate0Invoker.java:23)
at
org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:272)
... 11 more
I am puzzle because when I copy the drl generated string in a drl file,
everything works fine.
Any idea ? Thank you in advance.
Regards,
Benoît
________________________________
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5:04 a.m.
Here is the "drl generated string":
package com.tarification
import java.util.Date ;
import tarification.Produit ;
import java.text.SimpleDateFormat;
function Date getDate(String pStrDate)
{
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
return sdf.parse(pStrDate) ;
}
rule "Periode2"
when
$p : Produit(id == 1, eval( dDeb.before( getDate("01/06/2010") ) ) )
then
$p.setId(2) ;
$p.setPrix(100) ;
update( $p );
end
rule "Periode1"
when
$p : Produit(id == 1, eval( dDeb.before( getDate("01/06/2010") ) ) )
then
$p.setId(2) ;
$p.setPrix(50) ;
update( $p );
end
Date: Wed, 10 Mar 2010 11:41:36 +0100
From: wolfgang.laun(a)gmail.com
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] Template rules & eval
Can you post the "drl generated string" you are referring to?
-W
2010/3/10 Bertrand Grottier <b_grottier(a)hotmail.com>:
> Hello,
>
> I want to use template rules. Here is my .drt file:
>
> template header
> ddeb
> dfin
> prix
>
> package com.tarification
>
> import java.util.Date ;
>
> import tarification.Produit ;
> import java.text.SimpleDateFormat;
>
> function Date getDate(String pStrDate)
> {
> SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
> return sdf.parse(pStrDate) ;
> }
>
> template "tarification_produit"
>
> rule "Periode(a){row.rowNumber}"
> when
> $p : Produit(id == 1, eval( dDeb.before( getDate("@{ddeb}") ) ) )
> then
> $p.setId(2) ;
> $p.setPrix(@{prix}) ;
> update( $p );
> end
> end template
>
>
> I modified an example provided with Drools but encounter the following
> exception:
>
> Exception in thread "main" org.drools.RuntimeDroolsException: Exception
> executing predicate
> com.tarification.Rule_Periode2_0Predicate0Invoker@2110b61d
> at
> org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:279)
> at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143)
> at
>
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147)
> at
>
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> at
> org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185)
> at
> org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146)
> at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046)
> at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001)
> at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
> at tarification.TestTemplate.executeExample(TestTemplate.java:49)
> at tarification.TestTemplate.main(TestTemplate.java:26)
> Caused by: java.lang.NullPointerException
> at com.tarification.Rule_Periode2_0.predicate0(Rule_Periode2_0.java:9)
> at
>
com.tarification.Rule_Periode2_0Predicate0Invoker.evaluate(Rule_Periode2_0Predicate0Invoker.java:23)
> at
> org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:272)
> ... 11 more
>
> I am puzzle because when I copy the drl generated string in a drl file,
> everything works fine.
>
> Any idea ? Thank you in advance.
>
> Regards,
> Benoît
>
>
> ________________________________
> Commander un cadeau en ligne discrètement? Voir la solution offerte par
> Internet Explorer8
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
_______________________________________________
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5:26 a.m.
All I can see is that the date string is the same in Periode1 and Periode2,
so you must have the same date in lines 1 and 2, which won't work well, but
is perhaps due to simplification?
-W
2010/3/10 Bertrand Grottier <b_grottier(a)hotmail.com>
Here is the "drl generated string":
package com.tarification
import java.util.Date ;
import tarification.Produit ;
import java.text.SimpleDateFormat;
function Date getDate(String pStrDate)
{
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
return sdf.parse(pStrDate) ;
}
rule "Periode2"
when
$p : Produit(id == 1, eval( dDeb.before( getDate("01/06/2010") ) )
)
then
$p.setId(2) ;
$p.setPrix(100) ;
update( $p );
end
rule "Periode1"
when
$p : Produit(id == 1, eval( dDeb.before( getDate("01/06/2010") ) )
)
then
$p.setId(2) ;
$p.setPrix(50) ;
update( $p );
end
> Date: Wed, 10 Mar 2010 11:41:36 +0100
> From: wolfgang.laun(a)gmail.com
> To: rules-users(a)lists.jboss.org
> Subject: Re: [rules-users] Template rules & eval
>
> Can you post the "drl generated string" you are referring to?
> -W
>
> 2010/3/10 Bertrand Grottier <b_grottier(a)hotmail.com>:
> > Hello,
> >
> > I want to use template rules. Here is my .drt file:
> >
> > template header
> > ddeb
> > dfin
> > prix
> >
> > package com.tarification
> >
> > import java.util.Date ;
> >
> > import tarification.Produit ;
> > import java.text.SimpleDateFormat;
> >
> > function Date getDate(String pStrDate)
> > {
> > SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
> > return sdf.parse(pStrDate) ;
> > }
> >
> > template "tarification_produit"
> >
> > rule "Periode(a){row.rowNumber}"
> > when
> > $p : Produit(id == 1, eval( dDeb.before( getDate("@{ddeb}") )
)
)
> > then
> > $p.setId(2) ;
> > $p.setPrix(@{prix}) ;
> > update( $p );
> > end
> > end template
> >
> >
> > I modified an example provided with Drools but encounter the following
> > exception:
> >
> > Exception in thread "main" org.drools.RuntimeDroolsException:
Exception
> > executing predicate
> > com.tarification.Rule_Periode2_0Predicate0Invoker@2110b61d
> > at
> >
org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:279)
> > at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143)
> > at
> >
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> > at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147)
> > at
> >
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> > at
> > org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185)
> > at
> > org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146)
> > at
> >
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046)
> > at
> >
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001)
> > at
> >
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
> > at tarification.TestTemplate.executeExample(TestTemplate.java:49)
> > at tarification.TestTemplate.main(TestTemplate.java:26)
> > Caused by: java.lang.NullPointerException
> > at
com.tarification.Rule_Periode2_0.predicate0(Rule_Periode2_0.java:9)
> > at
> >
com.tarification.Rule_Periode2_0Predicate0Invoker.evaluate(Rule_Periode2_0Predicate0Invoker.java:23)
> > at
> >
org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:272)
> > ... 11 more
> >
> > I am puzzle because when I copy the drl generated string in a drl file,
> > everything works fine.
> >
> > Any idea ? Thank you in advance.
> >
> > Regards,
> > Benoît
> >
> >
> > ________________________________
> > Commander un cadeau en ligne discrètement? Voir la solution offerte par
> > Internet Explorer8
> > _______________________________________________
> > rules-users mailing list
> > rules-users(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
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5:49 a.m.
You're getting a NullPointer in the predicate... is dDeb null?
Enda
2010/3/10 Wolfgang Laun <wolfgang.laun(a)gmail.com>
All I can see is that the date string is the same in Periode1 and
Periode2,
so you must have the same date in lines 1 and 2, which won't work well, but
is perhaps due to simplification?
-W
2010/3/10 Bertrand Grottier <b_grottier(a)hotmail.com>
> Here is the "drl generated string":
>
>
> package com.tarification
> import java.util.Date ;
> import tarification.Produit ;
> import java.text.SimpleDateFormat;
>
> function Date getDate(String pStrDate)
> {
> SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
> return sdf.parse(pStrDate) ;
> }
>
> rule "Periode2"
> when
> $p : Produit(id == 1, eval( dDeb.before( getDate("01/06/2010") ) )
> )
> then
> $p.setId(2) ;
> $p.setPrix(100) ;
> update( $p );
> end
>
> rule "Periode1"
> when
> $p : Produit(id == 1, eval( dDeb.before( getDate("01/06/2010") ) )
> )
> then
> $p.setId(2) ;
> $p.setPrix(50) ;
> update( $p );
> end
>
>
> > Date: Wed, 10 Mar 2010 11:41:36 +0100
> > From: wolfgang.laun(a)gmail.com
> > To: rules-users(a)lists.jboss.org
> > Subject: Re: [rules-users] Template rules & eval
>
> >
> > Can you post the "drl generated string" you are referring to?
> > -W
> >
> > 2010/3/10 Bertrand Grottier <b_grottier(a)hotmail.com>:
> > > Hello,
> > >
> > > I want to use template rules. Here is my .drt file:
> > >
> > > template header
> > > ddeb
> > > dfin
> > > prix
> > >
> > > package com.tarification
> > >
> > > import java.util.Date ;
> > >
> > > import tarification.Produit ;
> > > import java.text.SimpleDateFormat;
> > >
> > > function Date getDate(String pStrDate)
> > > {
> > > SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
> > > return sdf.parse(pStrDate) ;
> > > }
> > >
> > > template "tarification_produit"
> > >
> > > rule "Periode(a){row.rowNumber}"
> > > when
> > > $p : Produit(id == 1, eval( dDeb.before(
getDate("@{ddeb}") )
> ) )
> > > then
> > > $p.setId(2) ;
> > > $p.setPrix(@{prix}) ;
> > > update( $p );
> > > end
> > > end template
> > >
> > >
> > > I modified an example provided with Drools but encounter the following
> > > exception:
> > >
> > > Exception in thread "main" org.drools.RuntimeDroolsException:
> Exception
> > > executing predicate
> > > com.tarification.Rule_Periode2_0Predicate0Invoker@2110b61d
> > > at
> > >
> org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:279)
> > > at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143)
> > > at
> > >
>
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> > > at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147)
> > > at
> > >
>
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> > > at
> > > org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185)
> > > at
> > > org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146)
> > > at
> > >
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046)
> > > at
> > >
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001)
> > > at
> > >
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
> > > at tarification.TestTemplate.executeExample(TestTemplate.java:49)
> > > at tarification.TestTemplate.main(TestTemplate.java:26)
> > > Caused by: java.lang.NullPointerException
> > > at
> com.tarification.Rule_Periode2_0.predicate0(Rule_Periode2_0.java:9)
> > > at
> > >
>
com.tarification.Rule_Periode2_0Predicate0Invoker.evaluate(Rule_Periode2_0Predicate0Invoker.java:23)
> > > at
> > >
> org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:272)
> > > ... 11 more
> > >
> > > I am puzzle because when I copy the drl generated string in a drl
> file,
> > > everything works fine.
> > >
> > > Any idea ? Thank you in advance.
> > >
> > > Regards,
> > > Benoît
> > >
> > >
> > > ________________________________
> > > Commander un cadeau en ligne discrètement? Voir la solution offerte
> par
> > > Internet Explorer8
> > > _______________________________________________
> > > rules-users mailing list
> > > rules-users(a)lists.jboss.org
> > > https://lists.jboss.org/mailman/listinfo/rules-users
> > >
> > >
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
>
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>
>
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--
Enda J Diggins
5:57 a.m.
You are right, that was the problem !
Thank you very much for your help.
Regards,
Benoît
Date: Wed, 10 Mar 2010 11:49:05 +0000
From: ejdiggins(a)gmail.com
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] Template rules & eval
You're getting a NullPointer in the predicate... is dDeb null?
Enda
2010/3/10 Wolfgang Laun <wolfgang.laun(a)gmail.com>
All I can see is that the date string is the same in Periode1 and Periode2, so you must
have the same date in lines 1 and 2, which won't work well, but is perhaps due to
simplification?
-W
2010/3/10 Bertrand Grottier <b_grottier(a)hotmail.com>
Here is the "drl generated string":
package com.tarification
import java.util.Date ;
import tarification.Produit ;
import java.text.SimpleDateFormat;
function Date getDate(String pStrDate)
{
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
return sdf.parse(pStrDate) ;
}
rule "Periode2"
when
$p : Produit(id == 1, eval( dDeb.before( getDate("01/06/2010") ) ) )
then
$p.setId(2) ;
$p.setPrix(100) ;
update( $p );
end
rule "Periode1"
when
$p : Produit(id == 1, eval( dDeb.before( getDate("01/06/2010") ) ) )
then
$p.setId(2) ;
$p.setPrix(50) ;
update( $p );
end
Date: Wed, 10 Mar 2010 11:41:36 +0100
From: wolfgang.laun(a)gmail.com
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] Template rules & eval
Can you post the "drl generated string" you are referring to?
-W
2010/3/10 Bertrand Grottier <b_grottier(a)hotmail.com>:
> Hello,
>
> I want to use template rules. Here is my .drt file:
>
> template header
> ddeb
> dfin
> prix
>
> package com.tarification
>
> import java.util.Date ;
>
> import tarification.Produit ;
> import java.text.SimpleDateFormat;
>
> function Date getDate(String pStrDate)
> {
> SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
> return sdf.parse(pStrDate) ;
> }
>
> template "tarification_produit"
>
> rule "Periode(a){row.rowNumber}"
> when
> $p : Produit(id == 1, eval( dDeb.before( getDate("@{ddeb}") ) ) )
> then
> $p.setId(2) ;
> $p.setPrix(@{prix}) ;
> update( $p );
> end
> end template
>
>
> I modified an example provided with Drools but encounter the following
> exception:
>
> Exception in thread "main" org.drools.RuntimeDroolsException: Exception
> executing predicate
> com.tarification.Rule_Periode2_0Predicate0Invoker@2110b61d
> at
> org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:279)
> at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143)
> at
>
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> at
org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147)
> at
>
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> at
>
org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185)
> at
> org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146)
> at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046)
> at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001)
> at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
> at
tarification.TestTemplate.executeExample(TestTemplate.java:49)
> at tarification.TestTemplate.main(TestTemplate.java:26)
> Caused by: java.lang.NullPointerException
> at com.tarification.Rule_Periode2_0.predicate0(Rule_Periode2_0.java:9)
> at
>
com.tarification.Rule_Periode2_0Predicate0Invoker.evaluate(Rule_Periode2_0Predicate0Invoker.java:23)
> at
> org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:272)
> ... 11 more
>
> I am puzzle because when I copy the drl generated string in a drl file,
> everything works fine.
>
> Any idea ? Thank you in advance.
>
> Regards,
> Benoît
>
>
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5681
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5 comments
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participants (3)
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Bertrand Grottier -
Enda J Diggins -
Wolfgang Laun