3:38 a.m.
Hi All !
I am trying use global variable in DRL file but when I am using it, gives
Exception. Please have a look at the DRL file -----
package com.drools.rules
import com.drools.facts.*;
*global CSVBeanAgent csvAgent;* [here I have declared the Global variable]
rule "Calculating Agent APE"
salience 35
no-loop true
when
$csvPolicy : CSVBeanPolicy()
//$csvAgent : CSVBeanAgent()
then
System.out.println("For agent --->zzzzz in rule setting premium form
rate>>>>"+$csvPolicy.getPremiumMode());
double policyAPE=$csvPolicy.getPolicyAPE();
System.out.println("policyAPE>>>>>"+policyAPE);
*System.out.println("Agent
zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz>>>>>"+csvAgent);*
double agentAPE=0.0;
if(csvAgent.getAgentNo()==$csvPolicy.getAgentNo()){
System.out.println("inside if");
agentAPE=agentAPE+policyAPE;
}
csvAgent.setAgentAPE(agentAPE);
System.out.println("AgentAPE>>>>>>>>>>>>>>>"+csvAgent.getAgentAPE());
update($csvPolicy);
end
Above is my rule....the Bold one is I am trying to the value of *csvAgent*,
it gives *null* value. Please help me in finding the solution i.e. How to
declare the global variable and how to use it in DRL file.
Thanks !
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3:48 a.m.
Try reading the Drools Expert User Guide section about the use of Globals :)
Globals are not Facts to be reason in the Left-Hand-Side (WHEN) part of a
rule.
Either use the Global (assuming it contains static data) and initialize it
correctly from within Java code (see the User Guide) or insert it as a Fact
and reason with it.
With kind regards,
Mike
On 26 July 2012 09:38, zeeshan <zeeshan.spring(a)gmail.com> wrote:
Hi All !
I am trying use global variable in DRL file but when I am using it, gives
Exception. Please have a look at the DRL file -----
package com.drools.rules
import com.drools.facts.*;
*global CSVBeanAgent csvAgent;* [here I have declared the Global variable]
rule "Calculating Agent APE"
salience 35
no-loop true
when
$csvPolicy : CSVBeanPolicy()
//$csvAgent : CSVBeanAgent()
then
System.out.println("For agent --->zzzzz in rule setting premium form
rate>>>>"+$csvPolicy.getPremiumMode());
double policyAPE=$csvPolicy.getPolicyAPE();
System.out.println("policyAPE>>>>>"+policyAPE);
*System.out.println("Agent
zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz>>>>>"+csvAgent);*
double agentAPE=0.0;
if(csvAgent.getAgentNo()==$csvPolicy.getAgentNo()){
System.out.println("inside if");
agentAPE=agentAPE+policyAPE;
}
csvAgent.setAgentAPE(agentAPE);
System.out.println("AgentAPE>>>>>>>>>>>>>>>"+csvAgent.getAgentAPE());
update($csvPolicy);
end
Above is my rule....the Bold one is I am trying to the value of *csvAgent*,
it gives *null* value. Please help me in finding the solution i.e. How to
declare the global variable and how to use it in DRL file.
Thanks !
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4:37 a.m.
Hi Mike !
Earlier I tried it inserting as a Fact in using Statefull Session in my
RuleMain.java but was facing Java Heap Space error.......so I tried
Declaring as a Global in RuleMain.java like this----
HashMap<String, Object> globals = new HashMap<String, Object>();
StatefulSession statefulSession=new
RuleRunner().getStatefulSession(RULES_FILES8,null,null, globals, null);
...
....
//local block for Agent
{
System.out.println("agent
block>>>>>>>>>>>>>>>>");
String csvPath="C:/Users/new_user/Desktop/CIMS/ABAgent.csv";
try{
File f = new File(csvPath);
InputStream is = new FileInputStream( f );
Reader rdr = new InputStreamReader( is );
LineNumberReader lnrdr = new LineNumberReader( rdr );
String line;
while( (line = lnrdr.readLine()) != null ){
if( line.charAt(0) == '"' ) continue;
String[] tokens = line.split( ";" );
if( tokens.length != 3 ) continue;
int agentId = Integer.parseInt( tokens[0] );
int agentNo = Integer.parseInt( tokens[1] );
String agentStatus = tokens[2];
/* System.out.println("1>>"+agentId);
System.out.println("2>>"+agentNo);
System.out.println("3>>"+agentStatus);*/
CSVBeanAgent csvAg = new CSVBeanAgent();
csvAg.setAgentId(agentId);
csvAg.setAgentNo(agentNo);
csvAg.setAgentStatus(agentStatus);
//statefulSession.insert(csvAg);
*globals.put(csvAg.getAgentId()+"", csvAg);*
}
}catch (Exception e) {
System.out.println(e);
}
}
System.out.println("fire all rule>>>>>>>>");
statefulSession.fireAllRules();
//statefulSession2.fireAllRules();
log.debug("============ End Firing Rules =========");
// Close the session
statefulSession.dispose();
}
}
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4:44 a.m.
So, you have multiple CSVBeanAgent's (created from a text file somewhere).
These are stored in a Map created in Java called "globals".
Where do you actually set the global in WorkingMemory: See
http://docs.jboss.org/drools/release/5.4.0.Final/drools-expert-docs/html/...
.
Furthermore, the Global will be of type Map not CSVBeanAgent, unless you
want a Global for each CSVBeanAgent - but then how do you decide which you
need.
Personally, I'd go back to inserting CSVBeanAgents as Facts and tackle the
Java Heap Space issue... there are definitely things you are not telling us.
With kind regards,
Mike
On 26 July 2012 10:37, zeeshan <zeeshan.spring(a)gmail.com> wrote:
Hi Mike !
Earlier I tried it inserting as a Fact in using Statefull Session in my
RuleMain.java but was facing Java Heap Space error.......so I tried
Declaring as a Global in RuleMain.java like this----
HashMap<String, Object> globals = new HashMap<String, Object>();
StatefulSession statefulSession=new
RuleRunner().getStatefulSession(RULES_FILES8,null,null, globals, null);
...
....
//local block for Agent
{
System.out.println("agent
block>>>>>>>>>>>>>>>>");
String
csvPath="C:/Users/new_user/Desktop/CIMS/ABAgent.csv";
try{
File f = new File(csvPath);
InputStream is = new FileInputStream( f );
Reader rdr = new InputStreamReader( is );
LineNumberReader lnrdr = new LineNumberReader( rdr
);
String line;
while( (line = lnrdr.readLine()) != null ){
if( line.charAt(0) == '"' ) continue;
String[] tokens = line.split( ";" );
if( tokens.length != 3 ) continue;
int agentId = Integer.parseInt( tokens[0] );
int agentNo = Integer.parseInt( tokens[1] );
String agentStatus = tokens[2];
/* System.out.println("1>>"+agentId);
System.out.println("2>>"+agentNo);
System.out.println("3>>"+agentStatus);*/
CSVBeanAgent csvAg = new CSVBeanAgent();
csvAg.setAgentId(agentId);
csvAg.setAgentNo(agentNo);
csvAg.setAgentStatus(agentStatus);
//statefulSession.insert(csvAg);
*globals.put(csvAg.getAgentId()+"", csvAg);*
}
}catch (Exception e) {
System.out.println(e);
}
}
System.out.println("fire all rule>>>>>>>>");
statefulSession.fireAllRules();
//statefulSession2.fireAllRules();
log.debug("============ End Firing Rules =========");
// Close the session
statefulSession.dispose();
}
}
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5:08 a.m.
Hi MIke !
Yes we have multiple CSVBeanAgent objects that initially we tried to insert
in statefull session but we faced heap size issue. This Heap Issue was
resolved by *Laune* using CSV, and we are following similar approach here
too but we faced heap size issue. So we followed global variable approach.
Instead of inserting CSVBEanAGent objects in statefull session, we
inserted it in t he global variable of type Hashmap. By this we avoided Heap
size issue, but now the problem is Global variable in all the Rules as well
as retreive that updated global value back in RuleMain.java file.
So can u help us in finding other solution or through global variable....??
Thanks.
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8:15 a.m.
This was the 50,000 lines spreadsheet?
IIRC, the data in the Bean wasn't engineered with memory saving in mind.
Could you please post this class again, and we'll see how to tone it
down to get then all into the heap.
-W
On 26/07/2012, zeeshan <zeeshan.spring(a)gmail.com> wrote:
Hi MIke !
Yes we have multiple CSVBeanAgent objects that initially we tried to insert
in statefull session but we faced heap size issue. This Heap Issue was
resolved by *Laune* using CSV, and we are following similar approach here
too but we faced heap size issue. So we followed global variable approach.
Instead of inserting CSVBEanAGent objects in statefull session, we
inserted it in t he global variable of type Hashmap. By this we avoided
Heap
size issue, but now the problem is Global variable in all the Rules as well
as retreive that updated global value back in RuleMain.java file.
So can u help us in finding other solution or through global
variable....??
Thanks.
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12:29 a.m.
Hi Laune and thanks for replying....
Actually it was not just 50,000, it was 1,00,000 records in single CSV that
we solved the Heap space problem by your help and we have developed that
product and successfuly integrated in Liferay Portal... :)
Now in this case, we have to read* three CSV files* having *1800,12k and
9.5k* records. Now our concern is that if it was running fine for 100
thousand records then why it is creating problem data which is much lesser
than 100 thousand.
Actually we are thinking in the direction like, it might creating problem
because increased number of columns in each of three CSV files that we are
using compare to that 100 thousand records in which we had 8 columns but
only one file.
Another concern is ,there may be possibility that as we are generating
objects from 3 CSV one after another then firing rules might creating
problem...?? Please help us in finding out what is the reason for this
problem....Please find the Rulemain.java and Sample .drl file which u asked
me to provide....
thanks !!
http://drools.46999.n3.nabble.com/file/n4018939/RuleMain.java RuleMain.java
http://drools.46999.n3.nabble.com/file/n4018939/RuleRunner.java
RuleRunner.java http://drools.46999.n3.nabble.com/file/n4018939/Sample.drl
Sample.drl
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1:50 a.m.
How do the record counts relate to files? 1800,12k and
9.5k =:= ABPolicyTransactions, ABPolicy, ABAgent?
Are these two rules all there is?
The second one has
$csvPolicy : CSVBeanPolicy()
//$csvAgent : CSVBeanAgent() --- assume this is not commented out
Now if you do insert CSVBeanAgents, this will create (using the
*assumed* record counts) that you'll get 12,000*9,500 = 114.000,000
activations! This is the reason for your heap problem.
The RHS of this rule has an if, comparing agent ids from both facts.
(If statements on the RHS is an anti-pattern, with rare exceptions!)
Conditions belong into the LHS!
rule "accumulate policy APEs into agent APE"
when
$csvAgent : CSVBeanAgent( $agno: agentNo, $agAPE: agentAPE )
$csvPolicy : CSVBeanPolicy( agentNo == $agno, $polAPE: policyAPE )
then
modify( $csvAgent ){
setAgentAPE( $agAPE + $polAPE )
}
end
Now, inserting all facts will still create some activations, but only
12,000, the number of ABPolicy records.
Firing the rules after each insertion of an agent will not let more
than one activation accumulate - you can't have less that that :)
-W
On 27/07/2012, zeeshan <zeeshan.spring(a)gmail.com> wrote:
Hi Laune and thanks for replying....
Actually it was not just 50,000, it was 1,00,000 records in single CSV that
we solved the Heap space problem by your help and we have developed that
product and successfuly integrated in Liferay Portal... :)
Now in this case, we have to read* three CSV files* having *1800,12k and
9.5k* records. Now our concern is that if it was running fine for 100
thousand records then why it is creating problem data which is much lesser
than 100 thousand.
Actually we are thinking in the direction like, it might creating problem
because increased number of columns in each of three CSV files that we are
using compare to that 100 thousand records in which we had 8 columns but
only one file.
Another concern is ,there may be possibility that as we are generating
objects from 3 CSV one after another then firing rules might creating
problem...?? Please help us in finding out what is the reason for this
problem....Please find the Rulemain.java and Sample .drl file which u asked
me to provide....
thanks !!
http://drools.46999.n3.nabble.com/file/n4018939/RuleMain.java RuleMain.java
http://drools.46999.n3.nabble.com/file/n4018939/RuleRunner.java
RuleRunner.java http://drools.46999.n3.nabble.com/file/n4018939/Sample.drl
Sample.drl
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5:16 a.m.
Hi Laune !
I applied your suggested changes but the loop is running infinitely and same
policyAPE is used to generated cumulated value I mean for 1 agent it is
expected that all the policy APEs should sum up to generate Agent APE but
same policy APE getting summed up infinitely.....plz find attached of my
console....we printing in console in following order ---> *
System.out.println($agAPE+"ZZZZZZeeesshhaaannn"+$polAPE);*
Also find my updated RuleMain and Sample.DRL...
thanks very much again !
http://drools.46999.n3.nabble.com/file/n4018946/Sample.drl Sample.drl
http://drools.46999.n3.nabble.com/file/n4018946/console_snapshot.png
console_snapshot.png
http://drools.46999.n3.nabble.com/file/n4018946/RuleMain.java RuleMain.java
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5:29 a.m.
Sorry, I think I missed this, all you need is a no-loop in the rule :)
-W
On 27/07/2012, zeeshan <zeeshan.spring(a)gmail.com> wrote:
Hi Laune !
I applied your suggested changes but the loop is running infinitely and
same
policyAPE is used to generated cumulated value I mean for 1 agent it is
expected that all the policy APEs should sum up to generate Agent APE but
same policy APE getting summed up infinitely.....plz find attached of my
console....we printing in console in following order ---> *
System.out.println($agAPE+"ZZZZZZeeesshhaaannn"+$polAPE);*
Also find my updated RuleMain and Sample.DRL...
thanks very much again !
http://drools.46999.n3.nabble.com/file/n4018946/Sample.drl Sample.drl
http://drools.46999.n3.nabble.com/file/n4018946/console_snapshot.png
console_snapshot.png
http://drools.46999.n3.nabble.com/file/n4018946/RuleMain.java RuleMain.java
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8 a.m.
Hi Laune !
Thanks for ur solution , I resolved the heap Size problem with
your solution but even using *no-loop* is not helping in solving infinite
loop issue . Can u suggest why it is not accessing other agent objects and
simply updating same agent object infinite times......After adding no-loop,
console shows----
*6.902394919998737E7ZZZZZZeeesshhaaannn1881.4
6.902583059998737E7ZZZZZZeeesshhaaannn2802.0
6.902863259998737E7ZZZZZZeeesshhaaannn1881.4
6.903051399998738E7ZZZZZZeeesshhaaannn2802.0
6.903331599998738E7ZZZZZZeeesshhaaannn1881.4
6.903519739998738E7ZZZZZZeeesshhaaannn2802.0
6.903799939998738E7ZZZZZZeeesshhaaannn1881.4
6.903988079998739E7ZZZZZZeeesshhaaannn2802.0
6.904268279998739E7ZZZZZZeeesshhaaannn1881.4
6.90445641999874E7ZZZZZZeeesshhaaannn2802.0
6.90473661999874E7ZZZZZZeeesshhaaannn1881.4
6.90492475999874E7ZZZZZZeeesshhaaannn2802.0
6.90520495999874E7ZZZZZZeeesshhaaannn1881.4
6.905393099998741E7ZZZZZZeeesshhaaannn2802.0
6.905673299998741E7ZZZZZZeeesshhaaannn1881.4
6.905861439998741E7ZZZZZZeeesshhaaannn2802.0
6.906141639998741E7ZZZZZZeeesshhaaannn1881.4
6.906329779998742E7ZZZZZZeeesshhaaannn2802.0
6.906609979998742E7ZZZZZZeeesshhaaannn1881.4
6.906798119998743E7ZZZZZZeeesshhaaannn2802.0
6.907078319998743E7ZZZZZZeeesshhaaannn1881.4
6.907266459998743E7ZZZZZZeeesshhaaannn2802.0
6.907546659998743E7ZZZZZZeeesshhaaannn1881.4
6.907734799998744E7ZZZZZZeeesshhaaannn2802.0
6.908014999998744E7ZZZZZZeeesshhaaannn1881.4
6.908203139998744E7ZZZZZZeeesshhaaannn2802.0
6.908483339998744E7ZZZZZZeeesshhaaannn1881.4
6.908671479998745E7ZZZZZZeeesshhaaannn2802.0
6.908951679998745E7ZZZZZZeeesshhaaannn1881.4
6.909139819998746E7ZZZZZZeeesshhaaannn2802.0
6.909420019998746E7ZZZZZZeeesshhaaannn1881.4
*
laune wrote
Sorry, I think I missed this, all you need is a no-loop in the rule :)
-W
On 27/07/2012, zeeshan <zeeshan.spring@> wrote:
> Hi Laune !
>
> I applied your suggested changes but the loop is running infinitely and
> same
> policyAPE is used to generated cumulated value I mean for 1 agent it is
> expected that all the policy APEs should sum up to generate Agent APE but
> same policy APE getting summed up infinitely.....plz find attached of my
> console....we printing in console in following order ---> *
> System.out.println($agAPE+"ZZZZZZeeesshhaaannn"+$polAPE);*
>
> Also find my updated RuleMain and Sample.DRL...
>
>
> thanks very much again !
>
> http://drools.46999.n3.nabble.com/file/n4018946/Sample.drl Sample.drl
> http://drools.46999.n3.nabble.com/file/n4018946/console_snapshot.png
> console_snapshot.png
> http://drools.46999.n3.nabble.com/file/n4018946/RuleMain.java
> RuleMain.java
>
>
>
>
> --
> View this message in context:
>
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> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users@.jboss
> https://lists.jboss.org/mailman/listinfo/rules-users
>
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9:25 a.m.
Ah, yes - there are multiple updates of an Agent from several
different policies.
Now, it depend: Is the computed sum of the APEs in the Agent used in
any other rule? If not, the solution is simple. Do not use
modify/update; simply accumulate the values, using the setter, and in
this case you can even omit the no-loop.
rule "accumulate policy APEs into agent APE"
when
$csvAgent : CSVBeanAgent( $agno: agentNo, $agAPE: agentAPE )
$csvPolicy : CSVBeanPolicy( agentNo == $agno, $polAPE: policyAPE )
then
$csvAgent.setAgentAPE( $agAPE + $polAPE );
end
If you do need the updated CSVBeanAgent.agentAPE, it's a little more
complicated and I should test the solution before I post it. - Or if
you want to try untested: you'll need an accumulate, like this:
rule "accumulate policy APEs into agent APE"
no-loop true
when
$csvAgent : CSVBeanAgent( $agno: agentNo, $agAPE: agentAPE )
accumulate( CSVBeanPolicy( agentNo == $agno, $polAPE: policyAPE );
$sum: sum( $polAPE ) )
then
modify( $csvAgent ){ setAgentAPE( $sum ) }
end
Note that this assumes that the old value in agentAPE is 0 or can be
overwritten; otherwise you might need to add the old value to the
$sum.
-W
On 27/07/2012, zeeshan <zeeshan.spring(a)gmail.com> wrote:
Hi Laune !
Thanks for ur solution , I resolved the heap Size problem
with
your solution but even using *no-loop* is not helping in solving infinite
loop issue . Can u suggest why it is not accessing other agent objects and
simply updating same agent object infinite times......After adding no-loop,
console shows----
*6.902394919998737E7ZZZZZZeeesshhaaannn1881.4
6.902583059998737E7ZZZZZZeeesshhaaannn2802.0
6.902863259998737E7ZZZZZZeeesshhaaannn1881.4
6.903051399998738E7ZZZZZZeeesshhaaannn2802.0
6.903331599998738E7ZZZZZZeeesshhaaannn1881.4
6.903519739998738E7ZZZZZZeeesshhaaannn2802.0
6.903799939998738E7ZZZZZZeeesshhaaannn1881.4
6.903988079998739E7ZZZZZZeeesshhaaannn2802.0
6.904268279998739E7ZZZZZZeeesshhaaannn1881.4
6.90445641999874E7ZZZZZZeeesshhaaannn2802.0
6.90473661999874E7ZZZZZZeeesshhaaannn1881.4
6.90492475999874E7ZZZZZZeeesshhaaannn2802.0
6.90520495999874E7ZZZZZZeeesshhaaannn1881.4
6.905393099998741E7ZZZZZZeeesshhaaannn2802.0
6.905673299998741E7ZZZZZZeeesshhaaannn1881.4
6.905861439998741E7ZZZZZZeeesshhaaannn2802.0
6.906141639998741E7ZZZZZZeeesshhaaannn1881.4
6.906329779998742E7ZZZZZZeeesshhaaannn2802.0
6.906609979998742E7ZZZZZZeeesshhaaannn1881.4
6.906798119998743E7ZZZZZZeeesshhaaannn2802.0
6.907078319998743E7ZZZZZZeeesshhaaannn1881.4
6.907266459998743E7ZZZZZZeeesshhaaannn2802.0
6.907546659998743E7ZZZZZZeeesshhaaannn1881.4
6.907734799998744E7ZZZZZZeeesshhaaannn2802.0
6.908014999998744E7ZZZZZZeeesshhaaannn1881.4
6.908203139998744E7ZZZZZZeeesshhaaannn2802.0
6.908483339998744E7ZZZZZZeeesshhaaannn1881.4
6.908671479998745E7ZZZZZZeeesshhaaannn2802.0
6.908951679998745E7ZZZZZZeeesshhaaannn1881.4
6.909139819998746E7ZZZZZZeeesshhaaannn2802.0
6.909420019998746E7ZZZZZZeeesshhaaannn1881.4
*
laune wrote
>
> Sorry, I think I missed this, all you need is a no-loop in the rule :)
> -W
>
>
>
> On 27/07/2012, zeeshan <zeeshan.spring@> wrote:
>> Hi Laune !
>>
>> I applied your suggested changes but the loop is running infinitely and
>> same
>> policyAPE is used to generated cumulated value I mean for 1 agent it is
>> expected that all the policy APEs should sum up to generate Agent APE
>> but
>> same policy APE getting summed up infinitely.....plz find attached of my
>> console....we printing in console in following order ---> *
>> System.out.println($agAPE+"ZZZZZZeeesshhaaannn"+$polAPE);*
>>
>> Also find my updated RuleMain and Sample.DRL...
>>
>>
>> thanks very much again !
>>
>> http://drools.46999.n3.nabble.com/file/n4018946/Sample.drl Sample.drl
>> http://drools.46999.n3.nabble.com/file/n4018946/console_snapshot.png
>> console_snapshot.png
>> http://drools.46999.n3.nabble.com/file/n4018946/RuleMain.java
>> RuleMain.java
>>
>>
>>
>>
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>>
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>>
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1:53 a.m.
HI Laune,
Thanks for ur solutions, first one working fine but* we want agentAPE value
for other rules or atleast we want them on RuleMain.java*(where we create
agent csv bean objects).
Your second solution when we implemented was throwing NULL Pointer
Exception.
Laune can u suggest us way in which we can solve problem related to first
solution
and if possible can we move with second one.
Thanks....
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3 a.m.
Could you please post the exact code of your rule with solution #2 and
the NPE stack trace? You're using Drools 5.4.0?
This works with 5.4.0 - notice the "no-loop true". $sum has class
Number, this needs intValue() (or whatever) to match the parameter
type of the setter.
rule "accumulate Policy values into Agent"
no-loop true
when
$a: Agent( $id: id )
accumulate( Policy( agentId == $id, $v: value ); $sum: sum( $v ) )
then
modify( $a ){ setValue( $sum.intValue() ) }
System.out.println( $a.toString() );
end
On 30/07/2012, zeeshan <zeeshan.spring(a)gmail.com> wrote:
HI Laune,
Thanks for ur solutions, first one working fine but* we want agentAPE value
for other rules or atleast we want them on RuleMain.java*(where we create
agent csv bean objects).
Your second solution when we implemented was throwing NULL Pointer
Exception.
Laune can u suggest us way in which we can solve problem related to first
solution
and if possible can we move with second one.
Thanks....
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3:35 a.m.
Hi Laune !
I am using 5.4 version. When I tried ur second solution, it gives
*NullPointerException*.
Below is Stack trace and also please find my Rule file.....
*WARNING: Unhandled Exception thrown: class java.lang.NullPointerException
Jul 30, 2012 2:01:18 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
at
org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:451)
at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:435)
at com.drools.facts.RuleRunner.loadRules(RuleRunner.java:71)
at com.drools.facts.RuleRunner.getStatefulSession(RuleRunner.java:227)
at com.drools.facts.RuleMain.main(RuleMain.java:43)
at com.drools.action.PolicyAction.execute(PolicyAction.java:25)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
*
laune wrote
Could you please post the exact code of your rule with solution #2 and
the NPE stack trace? You're using Drools 5.4.0?
This works with 5.4.0 - notice the "no-loop true". $sum has class
Number, this needs intValue() (or whatever) to match the parameter
type of the setter.
rule "accumulate Policy values into Agent"
no-loop true
when
$a: Agent( $id: id )
accumulate( Policy( agentId == $id, $v: value ); $sum: sum( $v ) )
then
modify( $a ){ setValue( $sum.intValue() ) }
System.out.println( $a.toString() );
end
On 30/07/2012, zeeshan <zeeshan.spring@> wrote:
> HI Laune,
>
> Thanks for ur solutions, first one working fine but* we want agentAPE
> value
> for other rules or atleast we want them on RuleMain.java*(where we create
> agent csv bean objects).
>
> Your second solution when we implemented was throwing NULL Pointer
> Exception.
>
> Laune can u suggest us way in which we can solve problem related to first
> solution
> and if possible can we move with second one.
>
>
> Thanks....
>
>
>
>
>
> --
> View this message in context:
>
http://drools.46999.n3.nabble.com/Using-global-variable-in-DRL-file-tp401...
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users@.jboss
> https://lists.jboss.org/mailman/listinfo/rules-users
>
_______________________________________________
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http://drools.46999.n3.nabble.com/file/n4018960/Sample.drl Sample.drl
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7:28 a.m.
Please read *carefully* - see !!!!!! below.
And make sure to check whether a DRL compilation results in an error.
Do not continue with errors.
On 30/07/2012, zeeshan <zeeshan.spring(a)gmail.com> wrote:
Hi Laune !
I am using 5.4 version. When I tried ur second solution, it gives
*NullPointerException*.
> This works with 5.4.0 - notice the "no-loop true". $sum
has class
> Number, this needs intValue() (or whatever) to match the parameter
!!!!!!!^^^^^^^^^^^^^^^^^^^^!!!!!!!
> type of the setter.
>
> rule "accumulate Policy values into Agent"
> no-loop true
> when
> $a: Agent( $id: id )
> accumulate( Policy( agentId == $id, $v: value ); $sum: sum( $v ) )
> then
> modify( $a ){ setValue( $sum.intValue() ) }
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!^^^^^^^^^^^^^^^^^^^^!!!!
> System.out.println( $a.toString() );
> end
>
>
7:05 a.m.
Hi Laune !
We are able to get the desired output by applying ur first solution. Thanks
very much Laune :-)
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7:27 a.m.
On 31/07/2012, zeeshan <zeeshan.spring(a)gmail.com> wrote:
Hi Laune !
We are able to get the desired output by applying ur first solution. Thanks
very much Laune :-)
OK, but the second one is better!
-W
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zeeshan