1:39 p.m.
I think you have to follow the structure of accumulate function. Like
<result pattern> from accumulate( <source pattern>,
init( <init code> ),
action( <action code> ),
reverse( <reverse code> ), (optional)
result( <result expression> ) )
examples are:
when
$order : Order()
$total : Number( doubleValue > 100 )
from accumulate( OrderItem( order == $order, $value : value ),
init( double total = 0; ),
action( total += $value; ),
result( total ) )
then
# apply discount to $order
end
As I understand from your code,
1. Make List for Event class, because accumulate will loop through the elements of
List<Event>
2. Init (write action codes, i.e. initialize value so you will find how many time it got
looped)
3. Write code inside the block of action(//code here) and
4. Update it in result block i.e. result(//update here);
Being said, follow the structure 1) init, 2) action, 3) result as above..
From: Sandhya Sree [via Drools] [mailto:ml-node+s46999n4028639h52@n3.nabble.com]
Sent: Tuesday, March 11, 2014 1:51 PM
To: Gopu Shrestha
Subject: [rules-users] sliding window problem
i have a class called Event which has the following members { name, source, timestamp }
with getters ,setters and constructor. i have a rule file which creates Event objects
whenever a file is added / deleted in a particular folder. the rule file is as follows
rule "new file"
when
$p: RuleContext( $old : getOldContext().getContainedFiles(), $new
:getNewContext().getContainedFiles())
RuleContext( $old != $new)
accumulate( $s : Object( this not memberOf $old ) from $new, $plus : collectList( $s ) )
events : Object() from $plus;
then
Event event = new Event("new file added",$p.getOldContext().getParent(),new
Date());
end
rule " file deleted"
when
$p: RuleContext( $old : getOldContext().getContainedFiles(),
$new:getNewContext().getContainedFiles())
RuleContext( $old != $new)
accumulate( $t : Object( this not memberOf $new ) from $old, $mins : collectList( $t ) )
events : Object() from $mins;
then
Event event = new Event("file deleted",$p.getOldContext().getParent(),new
Date());
end
(do not confuse with RuleContext and other unknown identifiers.. they r just related with
other classes in the project.. these two rules just works fine )..i need to use a sliding
time window and create another event if the number of file additions are > 5 over the
past 1 minute. my rule file is :
declare Event
@role( event )
end
rule "More than 5 additions"
when
Number(intValue > 5)
from accumulate( $tick : Event ( name == "new file added" ) over window:time(
1m ),
count( $tick ) ) )
then
System.out.println("too many additions");
end
i have enabled stream mode processing too.. but it doesnt seem to work. what could be the
problem?
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1:50 p.m.
New subject: sliding window problem
No, the combination of accumulate/count + over should be fine (I didn't
check though).
The problem is that you are simply creating the Events, but not
inserting them in the wm.
You need to add insert(event) to your rules
On 03/11/2014 07:39 PM, grules wrote:
I think you have to follow the structure of accumulate function. Like
*/<result pattern>/*from accumulate( */<source pattern>/*,
init( */<init code>/*),
action( */<action code>/*),
reverse( */<reverse code>/*), (optional)
result( */<result expression>/*) )
examples are:
when
$order : Order()
$total : Number( doubleValue > 100 )
from accumulate( OrderItem( order == $order, $value :
value ),
init( double total = 0; ),
action( total += $value; ),
result( total ) )
then
# apply discount to $order
end
As I understand from your code,
1. Make List for Event class, because accumulate will loop through
the elements of List<Event>
2. Init (write action codes, i.e. initialize value so you will find
how many time it got looped)
3. Write code inside the block of action(//code here) and
4. Update it in result block i.e. result(//update here);
Being said, follow the structure 1) init, 2) action, 3) result as above..
*From:*Sandhya Sree [via Drools] [mailto:ml-node+[hidden email]
</user/SendEmail.jtp?type=node&node=4028640&i=0>]
*Sent:* Tuesday, March 11, 2014 1:51 PM
*To:* Gopu Shrestha
*Subject:* [rules-users] sliding window problem
i have a class called Event which has the following members { name,
source, timestamp } with getters ,setters and constructor. i have a
rule file which creates Event objects whenever a file is added /
deleted in a particular folder. the rule file is as follows
|rule "new file"|
|when|
|$p: RuleContext( $old : getOldContext().getContainedFiles(), $new
:getNewContext().getContainedFiles())|
|RuleContext( $old != $new)|
|accumulate( $s : Object( this not memberOf $old ) from $new, $plus : collectList( $s ) )
|
|events : Object() from $plus;|
|then|
|Event event = new Event("new file added",$p.getOldContext().getParent(),new
Date());|
|end|
| |
| |
|rule " file deleted"|
|when|
|$p: RuleContext( $old : getOldContext().getContainedFiles(),
$new:getNewContext().getContainedFiles())|
|RuleContext( $old != $new)|
|accumulate( $t : Object( this not memberOf $new ) from $old, $mins : collectList( $t )
)|
|events : Object() from $mins; |
|then|
|Event event = new Event("file deleted",$p.getOldContext().getParent(),new
Date());|
|end |
(do not confuse with RuleContext and other unknown identifiers.. they
r just related with other classes in the project.. these two rules
just works fine )..i need to use a sliding time window and create
another event if the number of file additions are > 5 over the past 1
minute. my rule file is :
|declare Event |
|@role( event ) |
|end |
| |
| |
|rule "More than 5 additions"|
|when |
|Number(intValue > 5) |
|from accumulate( $tick : Event ( name == "new file added" ) over
window:time( 1m ),|
| count( $tick ) ) )|
|then |
| System.out.println("too many additions"); |
|end |
i have enabled stream mode processing too.. but it doesnt seem to
work. what could be the problem?
_______________________________________________
rules-users mailing list
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https://lists.jboss.org/mailman/listinfo/rules-users
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1:58 p.m.
New subject: sliding window problem
thanks.. that worked :-)
On Wed, Mar 12, 2014 at 12:20 AM, Davide Sottara <dsotty(a)gmail.com> wrote:
No, the combination of accumulate/count + over should be fine (I
didn't
check though).
The problem is that you are simply creating the Events, but not inserting
them in the wm.
You need to add insert(event) to your rules
On 03/11/2014 07:39 PM, grules wrote:
I think you have to follow the structure of accumulate function. Like
*<result pattern>* from accumulate( *<source pattern>*,
init( *<init code>* ),
action( *<action code>* ),
reverse( *<reverse code>* ), (optional)
result( *<result expression>* ) )
examples are:
when
$order : Order()
$total : Number( doubleValue > 100 )
from accumulate( OrderItem( order == $order, $value : value ),
init( double total = 0; ),
action( total += $value; ),
result( total ) )
then
# apply discount to $order
end
As I understand from your code,
1. Make List for Event class, because accumulate will loop through the
elements of List<Event>
2. Init (write action codes, i.e. initialize value so you will find how
many time it got looped)
3. Write code inside the block of action(//code here) and
4. Update it in result block i.e. result(//update here);
Being said, follow the structure 1) init, 2) action, 3) result as above..
*From:* Sandhya Sree [via Drools] [mailto:ml-node+ <ml-node+>[hidden
email] <http://user/SendEmail.jtp?type=node&node=4028640&i=0>]
*Sent:* Tuesday, March 11, 2014 1:51 PM
*To:* Gopu Shrestha
*Subject:* [rules-users] sliding window problem
i have a class called Event which has the following members { name,
source, timestamp } with getters ,setters and constructor. i have a rule
file which creates Event objects whenever a file is added / deleted in a
particular folder. the rule file is as follows
rule "new file"
when
$p: RuleContext( $old : getOldContext().getContainedFiles(), $new
:getNewContext().getContainedFiles())
RuleContext( $old != $new)
accumulate( $s : Object( this not memberOf $old ) from $new, $plus : collectList( $s ) )
events : Object() from $plus;
then
Event event = new Event("new file added",$p.getOldContext().getParent(),new
Date());
end
rule " file deleted"
when
$p: RuleContext( $old : getOldContext().getContainedFiles(),
$new:getNewContext().getContainedFiles())
RuleContext( $old != $new)
accumulate( $t : Object( this not memberOf $new ) from $old, $mins : collectList( $t ) )
events : Object() from $mins;
then
Event event = new Event("file deleted",$p.getOldContext().getParent(),new
Date());
end
(do not confuse with RuleContext and other unknown identifiers.. they r
just related with other classes in the project.. these two rules just works
fine )..i need to use a sliding time window and create another event if the
number of file additions are > 5 over the past 1 minute. my rule file is :
declare Event
@role( event )
end
rule "More than 5 additions"
when
Number(intValue > 5)
from accumulate( $tick : Event ( name == "new file added" ) over
window:time( 1m ), count( $tick ) ) )
then
System.out.println("too many additions");
end
i have enabled stream mode processing too.. but it doesnt seem to work.
what could be the problem?
_______________________________________________
rules-users mailing list
[hidden email] <http://user/SendEmail.jtp?type=node&node=4028639&i=0>
https://lists.jboss.org/mailman/listinfo/rules-users
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1:58 p.m.
New subject: sliding window problem
Basically agreeing with Sotty, I'd like you to warn you about the danger
you're running into if you insert those Event facts without taking any
action in order to get rid of them after 1 minute.
-W
On 11 March 2014 19:50, Davide Sottara <dsotty(a)gmail.com> wrote:
No, the combination of accumulate/count + over should be fine (I
didn't
check though).
The problem is that you are simply creating the Events, but not inserting
them in the wm.
You need to add insert(event) to your rules
On 03/11/2014 07:39 PM, grules wrote:
I think you have to follow the structure of accumulate function. Like
*<result pattern>* from accumulate( *<source pattern>*,
init( *<init code>* ),
action( *<action code>* ),
reverse( *<reverse code>* ), (optional)
result( *<result expression>* ) )
examples are:
when
$order : Order()
$total : Number( doubleValue > 100 )
from accumulate( OrderItem( order == $order, $value : value ),
init( double total = 0; ),
action( total += $value; ),
result( total ) )
then
# apply discount to $order
end
As I understand from your code,
1. Make List for Event class, because accumulate will loop through the
elements of List<Event>
2. Init (write action codes, i.e. initialize value so you will find how
many time it got looped)
3. Write code inside the block of action(//code here) and
4. Update it in result block i.e. result(//update here);
Being said, follow the structure 1) init, 2) action, 3) result as above..
*From:* Sandhya Sree [via Drools] [mailto:ml-node+ <ml-node+>[hidden
email] <http://user/SendEmail.jtp?type=node&node=4028640&i=0>]
*Sent:* Tuesday, March 11, 2014 1:51 PM
*To:* Gopu Shrestha
*Subject:* [rules-users] sliding window problem
i have a class called Event which has the following members { name,
source, timestamp } with getters ,setters and constructor. i have a rule
file which creates Event objects whenever a file is added / deleted in a
particular folder. the rule file is as follows
rule "new file"
when
$p: RuleContext( $old : getOldContext().getContainedFiles(), $new
:getNewContext().getContainedFiles())
RuleContext( $old != $new)
accumulate( $s : Object( this not memberOf $old ) from $new, $plus : collectList( $s ) )
events : Object() from $plus;
then
Event event = new Event("new file added",$p.getOldContext().getParent(),new
Date());
end
rule " file deleted"
when
$p: RuleContext( $old : getOldContext().getContainedFiles(),
$new:getNewContext().getContainedFiles())
RuleContext( $old != $new)
accumulate( $t : Object( this not memberOf $new ) from $old, $mins : collectList( $t ) )
events : Object() from $mins;
then
Event event = new Event("file deleted",$p.getOldContext().getParent(),new
Date());
end
(do not confuse with RuleContext and other unknown identifiers.. they r
just related with other classes in the project.. these two rules just works
fine )..i need to use a sliding time window and create another event if the
number of file additions are > 5 over the past 1 minute. my rule file is :
declare Event
@role( event )
end
rule "More than 5 additions"
when
Number(intValue > 5)
from accumulate( $tick : Event ( name == "new file added" ) over
window:time( 1m ), count( $tick ) ) )
then
System.out.println("too many additions");
end
i have enabled stream mode processing too.. but it doesnt seem to work.
what could be the problem?
_______________________________________________
rules-users mailing list
[hidden email] <http://user/SendEmail.jtp?type=node&node=4028639&i=0>
https://lists.jboss.org/mailman/listinfo/rules-users
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3917
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3917
days old
3 comments
4 participants
participants (4)
-
Davide Sottara -
grules -
Sandhya Sree -
Wolfgang Laun