8:25 p.m.
Drools version: 5.0.1
I defined two flows, one is main flow and the other is sub flow.
These two flows have same package name, and are built and added into one knowledge base.
When I start the main flow process, the NoSuchMethod error is thrown out.
I also test with two unrelated flows, and I can't get correct result.
So my question is that whether there is the constraint which two flows must not have same
package name?
main.rf
<?xml version="1.0" encoding="UTF-8"?>
<process xmlns="http://drools.org/drools-5.0/process"
xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
xs:schemaLocation="http://drools.org/drools-5.0/process
drools-processes-5.0.xsd"
type="RuleFlow" name="flow" id="process_plan"
package-name="sample" version="" >
<header>
<variables>
<variable name="v1" >
<type
name="org.drools.process.core.datatype.impl.type.BooleanDataType" />
<value>false</value>
</variable>
</variables>
</header>
<nodes>
<start id="1" name="Start" x="195" y="15"
width="30" height="30" />
<split id="2" name="Split" x="185" y="70"
width="40" height="40" type="2" >
<constraints>
<constraint toNodeId="10" toType="DROOLS_DEFAULT"
name="a" priority="1" type="code" dialect="java"
>return v1;</constraint>
<constraint toNodeId="11" toType="DROOLS_DEFAULT"
name="b" priority="1" type="code" dialect="java"
>return !v1;</constraint>
</constraints>
</split>
<join id="5" name="Join" x="185" y="260"
width="40" height="40" type="2" />
<actionNode id="7" name="test" x="155"
y="320" width="100" height="80" >
<action type="expression" dialect="java"
>System.out.println("Action Test");</action>
</actionNode>
<end id="8" name="End" x="191" y="436"
width="28" height="28" />
<subProcess id="9" name="SubProcess" x="312"
y="292" width="96" height="76"
processId="com.sample.subflow" independent="false" >
</subProcess>
<actionNode id="10" name="a" x="75" y="151"
width="80" height="40" >
<action type="expression" dialect="java"
>System.out.println("a");</action>
</actionNode>
<actionNode id="11" name="b" x="287"
y="153" width="80" height="40" >
<action type="expression" dialect="java"
>System.out.println("b");</action>
</actionNode>
</nodes>
<connections>
<connection from="1" to="2" />
<connection from="10" to="5" />
<connection from="11" to="5" />
<connection from="9" to="7" />
<connection from="7" to="8" />
<connection from="5" to="9" />
<connection from="2" to="10" />
<connection from="2" to="11" />
</connections>
</process>
sub.rf
<?xml version="1.0" encoding="UTF-8"?>
<process xmlns="http://drools.org/drools-5.0/process"
xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
xs:schemaLocation="http://drools.org/drools-5.0/process
drools-processes-5.0.xsd"
type="RuleFlow" name="subflow"
id="com.sample.subflow" package-name="sample" version=""
>
<header>
</header>
<nodes>
<start id="1" name="Start" x="29" y="76"
width="30" height="30" />
<actionNode id="2" name="Action" x="134"
y="51" width="100" height="80" >
<action type="expression" dialect="java"
>System.out.println("This is test subflow");</action>
</actionNode>
<end id="3" name="End" x="309" y="77"
width="28" height="28" />
<actionNode id="4" name="Action" x="240"
y="210" width="100" height="80" >
<action type="expression" dialect="java"
>System.out.println("This is test 2222");</action>
</actionNode>
</nodes>
<connections>
<connection from="1" to="2" />
<connection from="4" to="3" />
<connection from="2" to="4" />
</connections>
</process>
Test codes:
public class XiaYuSubflowTest {
public static void main(String[] args) {
KnowledgeBuilder builder = KnowledgeBuilderFactory.newKnowledgeBuilder();
builder.add(ResourceFactory.newClassPathResource("main.rf"),
ResourceType.DRF);
builder.add(ResourceFactory.newClassPathResource("sub.rf"),
ResourceType.DRF);
if (builder.hasErrors()) {
System.out.println(builder.getErrors());
}
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(builder.getKnowledgePackages());
StatefulKnowledgeSession sks = kbase.newStatefulKnowledgeSession();
sks.startProcess("process_plan");
sks.dispose();
}
}