Drools 5.5 Property Reactive on Maps
by gboro54
So I have an object with a map like follows:
protected ConcurrentMap<String, Double> accumulations = new
ConcurrentHashMap<String, Double>();
I wrote a convince method on the class that will look up the value in the
map and add to it if it exists and
if not there will put it in the map:
@Modifies({ "accumulations " })
public void addToAccumulation(String code, long volume) {
if (accumulations .containsKey(code)) {
Double value = accumulations .get(code) + volume;
accumulations .put(code, value);
} else {
accumulations .putIfAbsent(code, new Double(volume));
}
}
I have a rule to listen on the change of this filed on the object(i.e
accumulations["someCode"]!=null) but
when I modify the object the rule doesn't fire. I have added
@PropertyReactive to the Object and build the kbase as follows:
Properties props = new Properties();
props.setProperty("drools.dialect.java.compiler", "JANINO");
KnowledgeBuilderConfiguration config = KnowledgeBuilderFactory
.newKnowledgeBuilderConfiguration(props);
config.setOption(PropertySpecificOption.ALWAYS);
Any insight into why this may not work?
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11 years
How can I iterate through the ArrayList
by Govind J. Parashar
HI,
I have a AwaitingActionList Object which has a awaitingActionsList Object which has a ArrayList of AwaitingAction Objects. How can I iterate through the ArrayList to get to check each object AwaitingAction .value in the drl file.
Java refrence file attached
Thanks
Govind
MASTEK LTD.
In the US, we're called MAJESCOMASTEK
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11 years
iterate through the ArrayList
by Govind J. Parashar
Hi all
I have Class A which has a one attribute
private List<B> obj = new ArrayList<B>();
Class B which has a one attribute
Status
Value
How can I iterate through the ArrayList (i.e obj) to get to check each object B . Status=='True' the set Value=true in the drl file.
Thanks
Govind
MASTEK LTD.
In the US, we're called MAJESCOMASTEK
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server.
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11 years
How to use type-safe enums in rule condition
by droolster
Hello,
I would like to use type-safe enums in my rules. At the moment I have
situation like this:
public class Country {
private String name;
// getter/setters
}
rule "Country"
when
Country ( name == "USA" )
then
DO SOMETHING
end
I would like to have something like this:
public enum Country {
USA ()
// list of all countries in the world
}
and in the rule I would like to do this:
rule "Country"
when
Country ( name == Country.USA )
then
DO SOMETHING
end
Is that possible?
Thanks in advance for your help.
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11 years
Problem in writing rule and apply DSL
by braveheart85
Hello guys,
I really need your help.
I'm writing a DSL file in order to allow my application user to write their
simple rules.
I have queries of this typology:
$a: Data( )
$b: Year( ) from $a.years
$c: Person( ) from $b.persons
dsl mapping (inline version):
there are persons=$a: Data( ) $b: Year( ) from $a.years $c: Person( ) from
$b.persons
now if i would add attribute to person i can't, for example to get persons
over 18 years old.
If i write:
there are persons
- age more than 18
drools engine try to add attribute to Data object, probably because it is
first object in line.
To resolve this problem i should write query something like:
$c: Person( ) from ( Year( ).persons from Data( ).years )
In this way i can add attribute to Person instead of Data. Unfortunatly i
don't know how can i get it.
Someone can help me please.
Best Regards
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11 years
"distinct" operator in a query
by braveheart85
Hello guys,
I make a very simple question, especially for a curiosity.
I have this query:
query "QuerySelected"
$result: Person( identifierCode == "ABCDEF12H45S100A" )
$y: YearData( id == $result.identifierCode )
exists Vehicle( ) from $y.vehicles
end
With this query i get two equal person results because there are two annual
that matches with condition.
There is a simple way in drools to apply "distinct" operator or avoid this
behaviour.
Best regards
Andrea
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11 years
Out of Mem and thousand threads : Disabling JIT ?
by Raphael Jolivet
Hi,
I am using Drools for some time an I recently increased the number of rules
and their complexity.
I have now about 200 rules, for 700 x 200 facts (rules on a cartesian
product on them).
Since then, the computation of rules explodes with the following exception :
java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.$$YJP$$start0(Native Method) [na:1.6.0_30]
at java.lang.Thread.start0(Thread.java) [na:1.6.0_30]
at java.lang.Thread.start(Thread.java:640) [na:1.6.0_30]
at
java.util.concurrent.ThreadPoolExecutor.addIfUnderMaximumPoolSize(ThreadPoolExecutor.java:727)
~[na:1.6.0_30]
at
java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:657)
~[na:1.6.0_30]
at
org.drools.rule.constraint.MvelConstraint.jitEvaluator(MvelConstraint.java:232)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:197)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:137)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final]
...
After Googling a bit, I saw that this is due to JIT compilation of my rules.
For some reason, each one seem to create a Thread and ends up with
thousands of them.
First of all, I find a bit risky that the JIT compilation is fired by
some *hardcoded
*threshold :
I was not expecting such a technical tricky optimization to randomly
activate depending of my data.
Anyway, I wanted to disable this JIT thing.
I saw that the disabling is only available since *5.5.0.-final* right ?
I have switched to that version but I can't seem to be able to disable it.
I have tried both :
*-Dmvel2.disable.jit=true* (which would not be a viable solution for
production anyway : We can't rely on some settings of the server to ensure
things work)
And also this :
*OptimizerFactory.setDefaultOptimizer("reflective"); *(found
here<http://mvel.codehaus.org/Disabling+the+JIT+Compiler>
)
Any help would be appreciated.
Brgds,
Raphael
11 years
drools camel server execution has result but reponse empty result
by scarlettxu
Hi Expert,
I have a strange problem need your kind assistance!
I have deployed the drools server 5.5.0 to my tomcat, and I can use the
wrapped testing case without problem in the last week
when I type http://localhost:8080/camel-client/test.jsp
then the response will be
Reuqest: "Hello World"
Response: "Hello World"
Today, I run it normally at first, but later I want to try to use the https
so I change the url to
https://localhost:8443/camel-client/test.jsp
however the result is
Reuqest: "Hello World"
Response: ""
then I change back to use http, still have empty response
I have checked the log, there is execution result returned back, but just
the response is empty
Anybody can kindly check my problem? I have debug it for a whole day, but
have not figure out this strange problem.
below is the log for reference
19:23:56,015 TRACE CxfRsProducer:183 - Response body =
org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f
19:23:56,016 TRACE DefaultCxfRsBinding:195 - Populate external header
Date=[Tue, 12 Nov 2013 11:23:55 GMT] as Date
19:23:56,016 TRACE DefaultCxfRsBinding:195 - Populate external header
Content-Length=[268] as Content-Length
19:23:56,016 TRACE DefaultCxfRsBinding:195 - Populate external header
Content-Type=[text/plain] as Content-Type
19:23:56,016 TRACE DefaultCxfRsBinding:195 - Populate external header
Server=[Apache-Coyote/1.1] as Server
19:23:56,017 TRACE DefaultTypeConverter:88 - Converting
org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value:
org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f
19:23:56,018 TRACE DefaultTypeConverter:88 - Fallback type converter
StaticMethodFallbackTypeConverter: public static java.lang.Object
org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry)
converted type from: java.lang.String to:
org.apache.cxf.jaxrs.impl.ResponseImpl
19:23:56,018 TRACE InstrumentationProcessor:88 - to: Recording duration: 182
millis for exchange: Exchange[Message: <?xml version='1.0'
encoding='UTF-8'?><execution-results><result
identifier="message"><org.test.Message><text>echo:Hello
World</text></org.test.Message></result><fact-handle identifier="message"
external-form="0:2:1391417336:1391417336:2:DEFAULT"/></execution-results>]
19:23:56,018 TRACE DefaultTypeConverter:82 - Converting
org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value:
org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f
19:23:56,019 TRACE DefaultTypeConverter:82 - Fallback type converter
StaticMethodFallbackTypeConverter: public static java.lang.Object
org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry)
converted type from: java.lang.String to:
org.apache.cxf.jaxrs.impl.ResponseImpl
19:23:56,019 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,019 TRACE DefaultTypeConverter:82 - Converting
org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value:
org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f
19:23:56,020 TRACE DefaultTypeConverter:82 - Fallback type converter
StaticMethodFallbackTypeConverter: public static java.lang.Object
org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry)
converted type from: java.lang.String to:
org.apache.cxf.jaxrs.impl.ResponseImpl
19:23:56,020 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,020 TRACE DefaultTypeConverter:82 - Converting
org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value:
org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f
19:23:56,021 TRACE DefaultTypeConverter:82 - Fallback type converter
StaticMethodFallbackTypeConverter: public static java.lang.Object
org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry)
converted type from: java.lang.String to:
org.apache.cxf.jaxrs.impl.ResponseImpl
19:23:56,021 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,021 TRACE DefaultTypeConverter:82 - Converting
org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value:
org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f
19:23:56,022 TRACE DefaultTypeConverter:82 - Fallback type converter
StaticMethodFallbackTypeConverter: public static java.lang.Object
org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry)
converted type from: java.lang.String to:
org.apache.cxf.jaxrs.impl.ResponseImpl
19:23:56,022 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,023 TRACE DefaultErrorHandler:513 - Is exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 interrupted? false
19:23:56,023 TRACE DefaultErrorHandler:496 - Is exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 done? true
19:23:56,023 TRACE DefaultTypeConverter:82 - Converting
org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value:
org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f
19:23:56,023 TRACE DefaultTypeConverter:82 - Fallback type converter
StaticMethodFallbackTypeConverter: public static java.lang.Object
org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry)
converted type from: java.lang.String to:
org.apache.cxf.jaxrs.impl.ResponseImpl
19:23:56,024 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,024 TRACE Pipeline:90 - Processing exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 is continued being processed
synchronously
19:23:56,024 TRACE Pipeline:186 - ExchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 should continue routing: true
19:23:56,024 TRACE DefaultTypeConverter:113 - Converting
org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value:
org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f
19:23:56,025 TRACE DefaultTypeConverter:113 - Fallback type converter
StaticMethodFallbackTypeConverter: public static java.lang.Object
org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry)
converted type from: java.lang.String to:
org.apache.cxf.jaxrs.impl.ResponseImpl
19:23:56,025 TRACE Pipeline:113 - Processing exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 >>> Exchange[Message: ]
19:23:56,025 TRACE BeanProcessor:95 - Using a custom adapter as bean
invocation: org.drools.camel.component.PostCxfrs@1a6313e1
19:23:56,026 TRACE DefaultTypeConverter:82 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,026 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,026 TRACE DefaultTypeConverter:82 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,027 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,027 TRACE DefaultErrorHandler:513 - Is exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 interrupted? false
19:23:56,027 TRACE DefaultErrorHandler:496 - Is exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 done? true
19:23:56,027 TRACE DefaultTypeConverter:82 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,028 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,028 TRACE Pipeline:90 - Processing exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 is continued being processed
synchronously
19:23:56,028 TRACE Pipeline:186 - ExchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 should continue routing: false
19:23:56,028 TRACE DefaultTypeConverter:101 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,028 TRACE Pipeline:101 - Processing complete for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 >>> Exchange[Message: ]
19:23:56,029 TRACE DefaultTypeConverter:82 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,029 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,029 TRACE DefaultTypeConverter:82 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,029 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,030 TRACE DefaultTypeConverter:82 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,030 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,030 TRACE DefaultErrorHandler:513 - Is exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 interrupted? false
19:23:56,030 TRACE DefaultErrorHandler:496 - Is exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 done? true
19:23:56,031 TRACE DefaultTypeConverter:88 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,031 TRACE InstrumentationProcessor:88 - route: Recording duration:
200 millis for exchange: Exchange[Message: ]
19:23:56,031 TRACE DefaultTypeConverter:203 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,031 TRACE DefaultUnitOfWork:203 - UnitOfWork done for ExchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 with Exchange[Message: ]
19:23:56,032 TRACE DefaultInflightRepository:58 - Total 0 inflight
exchanges. Last removed: ID-icilszxnb126-46148-1384255363195-1-1
19:23:56,032 TRACE DefaultTypeConverter:82 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,032 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,032 TRACE DefaultTypeConverter:82 - Converting java.lang.String ->
java.lang.String with value:
19:23:56,032 TRACE AsyncProcessorHelper:82 - Exchange processed and is
continued routed synchronously for exchangeId:
ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ]
19:23:56,033 TRACE DefaultTypeConverter:155 - Converting java.lang.String ->
java.lang.String with value:
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11 years
Re: [rules-users] Calling RuleSet from a Function/Another Rule
by Lance Leverich
Hi Ayon,
I'm not personally familiar with Blaze, but I can tell you that in Drools,
rules are not something that you "call". In Drools, rules are evaluated
whenever the facts in your WorkingMemory change; and the consequences are
executed according to agenda/rule-flow group, and salience settings.
When the consequence of a rule introduces changes (adds a new fact, updates
an existing fact, removes/retracts an existing fact) to the WorkingMemory,
the rules that may be affected by that change are re-evaluated. Any new
consequences are scheduled for execution, based upon the agenda/rule-flow
group and/or salience settings. Any previously scheduled consequences may
also be removed from the schedule, if the rule which caused them to be
scheduled is no longer true.
All of that said, if what you are wanting to accomplish is controlling the
order of when consequences are executed then you should learn more about
agendas, rule-flow groups, and salience. Otherwise, in order to cause a
rule's consequences to execute, you should make sure your facts support the
rule.
Hope this helps,
Lance Leverich
11 years
