Drools Expert is the rule engine and Drools Fusion does complex event processing (CEP).
'org.drools:default-kiesession:6.2.0.Beta2'
<dependency>
<groupId>org.drools</groupId>
<artifactId>default-kiesession</artifactId>
<version>6.2.0.Beta2</version>
</dependency>
<dependency org="org.drools" name="default-kiesession" rev="6.2.0.Beta2"/>
"org.drools", "default-kiesession", "6.2.0.Beta2"