thx Wendy i have done it this way, but what is wrong with that function (which is a static java method) import function de.tarent.abiege.drools.util.DroolsUtils.requestsAreMatchingSubjectsforID rule "Request Received Rule" dialect "mvel" when $actual: ContextRequestType() ArrayList( size >= 1 ) from collect( $expected : ContextRequestType( requestsAreMatchingSubjectsforID(expected,$actual, "ID1")) over window:time(1m) ) then System.out.println("Request Received Rule Works "); SubjectCacheEntry entry = new SubjectCacheEntry(new Subject(""), new Date(System.currentTimeMillis()+ 4000)); channels["AuthZBlocking"].send(entry); end Unable to Analyse Expression requestsAreMatchingSubjectsforID($expected,$actual, "ID1"): [Error: unable to resolve method using strict-mode: de.tarent.abiege.drools.util.DroolsUtils.requestsAreMatchingSubjectsforID(de.tarent.abiege.jaxb.generated.xacml.context.ContextRequestType, de.tarent.abiege.jaxb.generated.xacml.context.ContextRequestType, java.lang.String)] [Near : {... requestsAreMatchingSubjectsfor ....}] -- View this message in context: http://drools.46999.n3.nabble.com/sliding-window-combination-tp3132340p31... Sent from the Drools: User forum mailing list archive at Nabble.com.

here im again , cause im not really sure i matched the goal i wanted with this combination: does it really checks, whether in time window 1m are the same 2 events with the same name ? when $actual: RequestCtx() ArrayList( size >= 2 ) from collect( $expected : RequestCtx( DroolsUtils.requestsMatchesforSubjectID($expected,$actual, "urn:oasis:names:tc:xacml:1.0:subject:subject-id") ) over window:time(1m) ) my tests results are looking strange und im would say that theres something missing , which connects the the LHS parts, to ensure that not the same event instance will also trigger the second part -- View this message in context: http://drools.46999.n3.nabble.com/sliding-window-combination-tp3132340p31... Sent from the Drools: User forum mailing list archive at Nabble.com.

thx for your help.. so i have to implement an accumulate function which counts based on matching ids, the reference will be set in the init method and the accumulate methods then checks whether its the same or not , ok what is this "reverse" method for ? (when does drools has to reverse this ? , do i have to reverse the count or also the check ?) -- View this message in context: http://drools.46999.n3.nabble.com/sliding-window-combination-tp3132340p31... Sent from the Drools: User forum mailing list archive at Nabble.com.

hm hey, i said that i have understand the init thing, seems not how do i get my first id , which ich dann check in accumulate-method ???? so to be clear im missing some kind of InputObject ti initialize with ?? (my Classp implements TypedAccumulateFunction) -- View this message in context: http://drools.46999.n3.nabble.com/sliding-window-combination-tp3132340p31... Sent from the Drools: User forum mailing list archive at Nabble.com.

it seems much clearer, thxxxx but im afraid that this was not the last question... -- View this message in context: http://drools.46999.n3.nabble.com/sliding-window-combination-tp3132340p31... Sent from the Drools: User forum mailing list archive at Nabble.com.

Using a simple class Request{ String id;... } and an auxiliary class IdCount {String id; int count; ... } and some insertions kSession.insert( new Request( "a" ) ); kSession.insert( new Request( "b" ) ); kSession.insert( new Request( "c" ) ); kSession.insert( new Request( "b" ) ); kSession.insert( new Request( "c" ) ); kSession.insert( new Request( "c" ) ); the rule below rule countById when $list: List() from accumulate( Request( $id: id ), init( Map id2count = new HashMap() ), action( IdCount ic = (IdCount)id2count.get( $id ); if( ic == null ){ ic = new IdCount( $id, 1 ); } else { ic.setCount( ic.getCount() + 1 ); } id2count.put( $id, ic ); ) reverse( IdCount ic = (IdCount)id2count.get( $id ); ic.setCount( ic.getCount() - 1 ); id2count.put( $id, ic ); ) result( id2count.values() ) ) IdCount( $id: id, $count: count > 1 ) from $list then System.out.println( "Id " + $id + ": " + $count ); end produces Id c: 3 Id b: 2 -W On 7 July 2011 16:55, Andre <morpheusandre(a)web.de&gt; wrote:

Conceptually it's quite simple. Consider a loop int sum( int[] array ) i = 0; // init for( int a: array ){ i += a; // action } return i; // result Drools does the loop, calling your callbacks providing the appropriate context from the scope of the ___ in the accumulate( _____________________ , You could look at the implementations of the built-in accumulate functions, and you'll see the same callbacks as methods of the function provider class. Just for fun: You can also use: import java.util.Set; import java.util.HashMap; rule countById when $set: Set() from accumulate( Request( $id: id ), init( HashMap id2count = new HashMap() ), action( Integer i = (Integer)id2count.get( $id ); if( i == null ) i = 0; i++; id2count.put( $id, i ); ) reverse( Integer i = (Integer)id2count.get( $id ); i--; id2count.put( $id, i ); ) result( id2count.entrySet() ) ) java.util.Map.Entry( $id: key, $count: value > 1 ) from $set then System.out.println( "Id " + $id + ": " + $count ); end Don't worry - I wanted to research this for some time; never had an opportunity ;-) -W On 7 July 2011 17:18, Andre <morpheusandre(a)web.de&gt; wrote:

ok in the xsd version 1.3 there it is &lt;bean class=&quot;&lt;functionclass&gt;" id="id"> ... <drools:accumulate-functions> <drools:accumulate-function name="countMatchingRequestSubjectIds" ref="id"/> </drools:accumulate-functions> another thing is: the docu says implement org.drools.runtime.rule.TypedAccumulateFunction, which is not correct the drools requires org.drools.base.accumulators.AccumulateFunction; be careful there is also an org.drools.runtime.rule.AccumulateFunction! -- View this message in context: http://drools.46999.n3.nabble.com/sliding-window-combination-tp3132340p31... Sent from the Drools: User forum mailing list archive at Nabble.com.

thx but it crashes when ich start the engine withthis interface Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kbase1': Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'java.util.LinkedHashMap' to required type 'java.util.Map' for property 'accumulateFunctions'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [de.tarent.abiege.drools.util.CountRequestsbySubjectID] to required type [org.drools.base.accumulators.AccumulateFunction] for property 'accumulateFunctions[countMatchingSubjectIdsInRequest]': no matching editors or conversion strategy found at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:563) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93) at org.apache.camel.spring.Main.createDefaultApplicationContext(Main.java:185) at org.apache.camel.spring.Main.doStart(Main.java:139) at org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:65) at org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:52) at org.apache.camel.impl.MainSupport.run(MainSupport.java:136) at org.apache.camel.impl.MainSupport.run(MainSupport.java:322) at org.apache.camel.spring.Main.main(Main.java:72) ... 6 more Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'java.util.LinkedHashMap' to required type 'java.util.Map' for property 'accumulateFunctions'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [de.tarent.abiege.drools.util.CountRequestsbySubjectID] to required type [org.drools.base.accumulators.AccumulateFunction] for property 'accumulateFunctions[countMatchingSubjectIdsInRequest]': no matching editors or conversion strategy found at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:462) at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:499) at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:493) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1371) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1330) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) ... 23 more Caused by: java.lang.IllegalStateException: Cannot convert value of type [de.tarent.abiege.drools.util.CountRequestsbySubjectID] to required type [org.drools.base.accumulators.AccumulateFunction] for property 'accumulateFunctions[countMatchingSubjectIdsInRequest]': no matching editors or conversion strategy found at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:231) at org.springframework.beans.TypeConverterDelegate.convertToTypedMap(TypeConverterDelegate.java:610) at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:178) at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:447 -- View this message in context: http://drools.46999.n3.nabble.com/sliding-window-combination-tp3132340p31... Sent from the Drools: User forum mailing list archive at Nabble.com.