[rules-users] drools5.3.0 rule time error with osgi environment

[Zhao Yi]

I am using drools 5.3.0 and work in osgi environment. i have installed
drools-core, drools-api, drools-compiler and drools-tempalte in osgi
context. I have no problem to load knowledgebase but get error when fire
rules, please see below error message. Does anyone know how to fix it?

java.lang.LinkageError: loader constraint violation: when resolving
interface method
"org.drools.spi.KnowledgeHelper.update(Lorg/drools/FactHandle;)V" the class
loader (instance of
org/drools/rule/JavaDialectRuntimeData$PackageClassLoader) of the current
class, defaultpkg/Rule_ScanRange__startLocationCheck, and the class loader
(instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) for
resolved class, org/drools/spi/KnowledgeHelper, have different Class objects
for the type org/drools/FactHandle used in the signature
java.lang.LinkageError: loader constraint violation: when resolving
interface method
"org.drools.spi.KnowledgeHelper.update(Lorg/drools/FactHandle;)V" the class
loader (instance of
org/drools/rule/JavaDialectRuntimeData$PackageClassLoader) of the current
class, defaultpkg/Rule_ScanRange__startLocationCheck, and the class loader
(instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) for
resolved class, org/drools/spi/KnowledgeHelper, have different Class objects
for the type org/drools/FactHandle used in the signature

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