Examples of org.drools.runtime.process.ProcessInstance

org.drools.runtime.process.ProcessInstance
A process instance represents one specific instance of a process that is currently executing. Whenever a process is started, a process instance is created that represents that specific instance that was started. It contains all runtime information related to that instance. Multiple process instances of the same process can be executed simultaneously. For example, consider a process definition that describes how to process a purchase order. Whenever a new purchase order comes in, a new process instance will be created for that purchase order. Multiple process instances (one for each purchase order) can coexist. A process instance is uniquely identified by an id. This class can be extended to represent one specific type of process, e.g. WorkflowProcessInstance when using a WorkflowProcess where the process logic is expressed as a flow chart. @see org.drools.runtime.process.WorkflowProcessInstance

public class ProcessSubProcessTest extends JbpmTestCase {


    public void testSubProcess() throws Exception {
        RuleBase ruleBase = readRule(true);
        WorkingMemory workingMemory = ruleBase.newStatefulSession();
        ProcessInstance processInstance = ( ProcessInstance )
        workingMemory.startProcess("com.sample.ruleflow");
        assertEquals(ProcessInstance.STATE_ACTIVE, processInstance.getState());
        assertEquals(2, workingMemory.getProcessInstances().size());
        workingMemory.insert(new Person());
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance.getState());
        assertEquals(0, workingMemory.getProcessInstances().size());
    }

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    public void testDynamicSubProcess() throws Exception {
        RuleBase ruleBase = readDynamicSubProcess();
        WorkingMemory workingMemory = ruleBase.newStatefulSession();
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("x", "subflow");
        ProcessInstance processInstance = ( ProcessInstance )
        workingMemory.startProcess("com.sample.ruleflow", params);
        assertEquals(ProcessInstance.STATE_ACTIVE, processInstance.getState());
        assertEquals(2, workingMemory.getProcessInstances().size());
        workingMemory.insert(new Person());
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance.getState());
        assertEquals(0, workingMemory.getProcessInstances().size());
    }

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        workingMemory.fireAllRules();
        assertEquals( 0,
                      list.size() );


        final ProcessInstance processInstance = workingMemory.startProcess( "0" );
        assertEquals( ProcessInstance.STATE_ACTIVE,
                      processInstance.getState() );
        workingMemory.fireAllRules();
        assertEquals( 4,
                      list.size() );
        assertEquals( "Rule1",
                      list.get( 0 ) );
        assertEquals( "Rule3",
                      list.get( 1 ) );
        assertEquals( "Rule2",
                      list.get( 2 ) );
        assertEquals( "Rule4",
                      list.get( 3 ) );
        assertEquals( ProcessInstance.STATE_COMPLETED,
                      processInstance.getState() );
    }

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        workingMemory.fireAllRules();
        assertEquals( 0,
                      list.size() );


        final ProcessInstance processInstance = workingMemory.startProcess( "0" );
        assertEquals( ProcessInstance.STATE_ACTIVE,
                      processInstance.getState() );
        workingMemory.fireAllRules();
        assertEquals( 4,
                      list.size() );
        assertEquals( "Rule1",
                      list.get( 0 ) );
        assertEquals( "Rule3",
                      list.get( 1 ) );
        assertEquals( "Rule2",
                      list.get( 2 ) );
        assertEquals( "Rule4",
                      list.get( 3 ) );
        assertEquals( ProcessInstance.STATE_COMPLETED,
                      processInstance.getState() );
        // Reset the system property so that automatic conversion should not happen
        System.setProperty( "drools.ruleflow.port",
                            "false" );
    }

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        workingMemory.fireAllRules();
        assertEquals( 0,
                      list.size() );


        final ProcessInstance processInstance = workingMemory.startProcess( "0" );
        assertEquals( ProcessInstance.STATE_ACTIVE,
                      processInstance.getState() );
        workingMemory.fireAllRules();
        assertEquals( 4,
                      list.size() );
        assertEquals( "Rule1",
                      list.get( 0 ) );
        assertEquals( "Rule3",
                      list.get( 1 ) );
        assertEquals( "Rule2",
                      list.get( 2 ) );
        assertEquals( "Rule4",
                      list.get( 3 ) );
        assertEquals( ProcessInstance.STATE_COMPLETED,
                      processInstance.getState() );


    }

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        workingMemory.insert(john);
        workingMemory.insert(jane);
        
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("name", john.getName());
        ProcessInstance processInstance1 = ( ProcessInstance )
            workingMemory.startProcess("org.jbpm.process-split", params);
        
        params = new HashMap<String, Object>();
        params.put("name", jane.getName());
        ProcessInstance processInstance2 = ( ProcessInstance )
            workingMemory.startProcess("org.jbpm.process-split", params);
        
        params = new HashMap<String, Object>();
        params.put("name", julie.getName());
        ProcessInstance processInstance3 = ( ProcessInstance )
            workingMemory.startProcess("org.jbpm.process-split", params);
        
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance1.getState());
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance2.getState());
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance3.getState());
        assertEquals(2, list.size());
    }

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        ksession.insert(john);
        ksession.insert(jane);
        
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("name", john.getName());
        ProcessInstance processInstance1 =
            ksession.startProcess("org.jbpm.process-split", params);
        
        params = new HashMap<String, Object>();
        params.put("name", jane.getName());
        ProcessInstance processInstance2 =
          ksession.startProcess("org.jbpm.process-split", params);
        
        params = new HashMap<String, Object>();
        params.put("name", julie.getName());
        ProcessInstance processInstance3 =
            ksession.startProcess("org.jbpm.process-split", params);
        
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance1.getState());
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance2.getState());
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance3.getState());
        assertEquals(2, list.size());
    }

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        List<Long> list = new ArrayList<Long>();
        workingMemory.setGlobal("list", list);


        Map<String, Object> params = new HashMap<String, Object>();
        params.put("person", new Person("John Doe"));
        ProcessInstance processInstance = ( ProcessInstance )
            workingMemory.startProcess("org.jbpm.process-split", params);
        
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance.getState());
        assertEquals(1, list.size());
    }

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        List<Long> list = new ArrayList<Long>();
        workingMemory.setGlobal("list", list);


        Map<String, Object> params = new HashMap<String, Object>();
        params.put("name", "John Doe");
        ProcessInstance processInstance = ( ProcessInstance )
            workingMemory.startProcess("org.jbpm.process-split", params);
        
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance.getState());
        assertEquals(1, list.size());
    }

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        List<Long> list = new ArrayList<Long>();
        workingMemory.setGlobal("list", list);


        Map<String, Object> params = new HashMap<String, Object>();
        params.put("person", new Person("John Doe"));
        ProcessInstance processInstance = ( ProcessInstance )
            workingMemory.startProcess("org.jbpm.process-split", params);
        
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance.getState());
        assertEquals(1, list.size());
    }

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