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en:rule:do_not_use_converging_inclusive_gateway [2024-01-25 09:41] – removed - external edit (Unknown date) 127.0.0.1en:rule:do_not_use_converging_inclusive_gateway [2024-01-25 09:42] (current) – Anatoly Belaychuk
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 +====== Don't use converging inclusive gateways without a paired exclusive gateway ======
  
 +{{tag>gateway inclusive_gateway}}
 +
 +The use of a converging inclusive gateway without a paired diverging one is redundant and is not recommended.
 +
 +===== ✔ How to =====
 +
 +<bpmnio type="bpmn">
 +<?xml version="1.0" encoding="UTF-8"?>
 +<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" id="sid-38422fae-e03e-43a3-bef4-bd33b32041b2" targetNamespace="http://bpmn.io/bpmn" exporter="http://bpmn.io" exporterVersion="0.10.1">
 +  <process id="Process_1wcoogl">
 +    <exclusiveGateway id="Gateway_1oldu18">
 +      <outgoing>Flow_0s2x71d</outgoing>
 +      <outgoing>Flow_0r8sh7a</outgoing>
 +    </exclusiveGateway>
 +    <task id="Activity_1msbof5">
 +      <incoming>Flow_0s2x71d</incoming>
 +      <outgoing>Flow_0w3f70i</outgoing>
 +    </task>
 +    <sequenceFlow id="Flow_0s2x71d" sourceRef="Gateway_1oldu18" targetRef="Activity_1msbof5" />
 +    <task id="Activity_1yuh0l8">
 +      <incoming>Flow_0r8sh7a</incoming>
 +      <outgoing>Flow_1yzbpp9</outgoing>
 +    </task>
 +    <sequenceFlow id="Flow_0r8sh7a" sourceRef="Gateway_1oldu18" targetRef="Activity_1yuh0l8" />
 +    <exclusiveGateway id="Gateway_1oih979">
 +      <incoming>Flow_1yzbpp9</incoming>
 +      <incoming>Flow_0w3f70i</incoming>
 +    </exclusiveGateway>
 +    <sequenceFlow id="Flow_1yzbpp9" sourceRef="Activity_1yuh0l8" targetRef="Gateway_1oih979" />
 +    <sequenceFlow id="Flow_0w3f70i" sourceRef="Activity_1msbof5" targetRef="Gateway_1oih979" />
 +  </process>
 +  <bpmndi:BPMNDiagram id="BpmnDiagram_1">
 +    <bpmndi:BPMNPlane id="BpmnPlane_1" bpmnElement="Process_1wcoogl">
 +      <bpmndi:BPMNShape id="Gateway_1oldu18_di" bpmnElement="Gateway_1oldu18" isMarkerVisible="true">
 +        <omgdc:Bounds x="285" y="135" width="50" height="50" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Activity_1msbof5_di" bpmnElement="Activity_1msbof5">
 +        <omgdc:Bounds x="360" y="50" width="100" height="80" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Activity_1yuh0l8_di" bpmnElement="Activity_1yuh0l8">
 +        <omgdc:Bounds x="360" y="190" width="100" height="80" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Gateway_1oih979_di" bpmnElement="Gateway_1oih979" isMarkerVisible="true">
 +        <omgdc:Bounds x="485" y="135" width="50" height="50" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNEdge id="Flow_0s2x71d_di" bpmnElement="Flow_0s2x71d">
 +        <omgdi:waypoint x="310" y="135" />
 +        <omgdi:waypoint x="310" y="90" />
 +        <omgdi:waypoint x="360" y="90" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_0r8sh7a_di" bpmnElement="Flow_0r8sh7a">
 +        <omgdi:waypoint x="310" y="185" />
 +        <omgdi:waypoint x="310" y="230" />
 +        <omgdi:waypoint x="360" y="230" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_1yzbpp9_di" bpmnElement="Flow_1yzbpp9">
 +        <omgdi:waypoint x="460" y="230" />
 +        <omgdi:waypoint x="510" y="230" />
 +        <omgdi:waypoint x="510" y="185" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_0w3f70i_di" bpmnElement="Flow_0w3f70i">
 +        <omgdi:waypoint x="460" y="90" />
 +        <omgdi:waypoint x="510" y="90" />
 +        <omgdi:waypoint x="510" y="135" />
 +      </bpmndi:BPMNEdge>
 +    </bpmndi:BPMNPlane>
 +  </bpmndi:BPMNDiagram>
 +</definitions>
 +</bpmnio>
 +
 +===== ✘ How NOT to =====
 +
 +<bpmnio type="bpmn">
 +<?xml version="1.0" encoding="UTF-8"?>
 +<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" id="sid-38422fae-e03e-43a3-bef4-bd33b32041b2" targetNamespace="http://bpmn.io/bpmn" exporter="http://bpmn.io" exporterVersion="0.10.1">
 +  <process id="Process_1wcoogl">
 +    <exclusiveGateway id="Gateway_1oldu18">
 +      <outgoing>Flow_0s2x71d</outgoing>
 +      <outgoing>Flow_0r8sh7a</outgoing>
 +    </exclusiveGateway>
 +    <task id="Activity_1msbof5">
 +      <incoming>Flow_0s2x71d</incoming>
 +      <outgoing>Flow_0w3f70i</outgoing>
 +    </task>
 +    <sequenceFlow id="Flow_0s2x71d" sourceRef="Gateway_1oldu18" targetRef="Activity_1msbof5" />
 +    <task id="Activity_1yuh0l8">
 +      <incoming>Flow_0r8sh7a</incoming>
 +      <outgoing>Flow_1yzbpp9</outgoing>
 +    </task>
 +    <sequenceFlow id="Flow_0r8sh7a" sourceRef="Gateway_1oldu18" targetRef="Activity_1yuh0l8" />
 +    <sequenceFlow id="Flow_1yzbpp9" sourceRef="Activity_1yuh0l8" targetRef="Gateway_1oih979" />
 +    <sequenceFlow id="Flow_0w3f70i" sourceRef="Activity_1msbof5" targetRef="Gateway_1oih979" />
 +    <inclusiveGateway id="Gateway_1oih979">
 +      <incoming>Flow_1yzbpp9</incoming>
 +      <incoming>Flow_0w3f70i</incoming>
 +    </inclusiveGateway>
 +  </process>
 +  <bpmndi:BPMNDiagram id="BpmnDiagram_1">
 +    <bpmndi:BPMNPlane id="BpmnPlane_1" bpmnElement="Process_1wcoogl">
 +      <bpmndi:BPMNShape id="Gateway_1oldu18_di" bpmnElement="Gateway_1oldu18" isMarkerVisible="true">
 +        <omgdc:Bounds x="285" y="135" width="50" height="50" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Activity_1msbof5_di" bpmnElement="Activity_1msbof5">
 +        <omgdc:Bounds x="360" y="50" width="100" height="80" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Activity_1yuh0l8_di" bpmnElement="Activity_1yuh0l8">
 +        <omgdc:Bounds x="360" y="190" width="100" height="80" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Gateway_1bl2jrt_di" bpmnElement="Gateway_1oih979">
 +        <omgdc:Bounds x="485" y="135" width="50" height="50" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNEdge id="Flow_0s2x71d_di" bpmnElement="Flow_0s2x71d">
 +        <omgdi:waypoint x="310" y="135" />
 +        <omgdi:waypoint x="310" y="90" />
 +        <omgdi:waypoint x="360" y="90" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_0r8sh7a_di" bpmnElement="Flow_0r8sh7a">
 +        <omgdi:waypoint x="310" y="185" />
 +        <omgdi:waypoint x="310" y="230" />
 +        <omgdi:waypoint x="360" y="230" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_1yzbpp9_di" bpmnElement="Flow_1yzbpp9">
 +        <omgdi:waypoint x="460" y="230" />
 +        <omgdi:waypoint x="510" y="230" />
 +        <omgdi:waypoint x="510" y="185" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_0w3f70i_di" bpmnElement="Flow_0w3f70i">
 +        <omgdi:waypoint x="460" y="90" />
 +        <omgdi:waypoint x="510" y="90" />
 +        <omgdi:waypoint x="510" y="135" />
 +      </bpmndi:BPMNEdge>
 +    </bpmndi:BPMNPlane>
 +  </bpmndi:BPMNDiagram>
 +</definitions>
 +</bpmnio>
 +
 +===== Notes =====
 +
 +According to [[https://www.omg.org/spec/BPMN/2.0.2/PDF | BPMN specification]] (p. 291),
 +
 +> A converging Inclusive Gateway is used to merge a combination of alternative and parallel paths. A control flow token arriving at an Inclusive Gateway MAY be synchronized with some other tokens that arrive later at this Gateway.
 +
 +Since the behavior of unpaired converging inclusive gateway isn't preceicely defined, it's better to avoid such usage.
 +
 +===== Exceptions =====
 +
 +Inclusive gateway is the only means to synchronize conditional flows:
 +
 +<bpmnio type="bpmn">
 +<?xml version="1.0" encoding="UTF-8"?>
 +<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" id="sid-38422fae-e03e-43a3-bef4-bd33b32041b2" targetNamespace="http://bpmn.io/bpmn" exporter="http://bpmn.io" exporterVersion="0.10.1">
 +  <process id="Process_1fohfju">
 +    <task id="Activity_0dz3i2m" default="Flow_0yhgogy">
 +      <outgoing>Flow_0yhgogy</outgoing>
 +      <outgoing>Flow_17w8cch</outgoing>
 +      <outgoing>Flow_1erz2cg</outgoing>
 +    </task>
 +    <sequenceFlow id="Flow_0yhgogy" sourceRef="Activity_0dz3i2m" targetRef="Activity_0px2wls" />
 +    <inclusiveGateway id="Gateway_14rc2cm">
 +      <incoming>Flow_0xdfiky</incoming>
 +      <incoming>Flow_1bwpf18</incoming>
 +      <incoming>Flow_00a1mlo</incoming>
 +    </inclusiveGateway>
 +    <task id="Activity_0px2wls">
 +      <incoming>Flow_0yhgogy</incoming>
 +      <outgoing>Flow_0xdfiky</outgoing>
 +    </task>
 +    <sequenceFlow id="Flow_0xdfiky" sourceRef="Activity_0px2wls" targetRef="Gateway_14rc2cm" />
 +    <task id="Activity_0poa1n1">
 +      <incoming>Flow_17w8cch</incoming>
 +      <outgoing>Flow_00a1mlo</outgoing>
 +    </task>
 +    <sequenceFlow id="Flow_17w8cch" sourceRef="Activity_0dz3i2m" targetRef="Activity_0poa1n1">
 +      <conditionExpression xsi:type="tFormalExpression" />
 +    </sequenceFlow>
 +    <task id="Activity_08papqw">
 +      <incoming>Flow_1erz2cg</incoming>
 +      <outgoing>Flow_1bwpf18</outgoing>
 +    </task>
 +    <sequenceFlow id="Flow_1erz2cg" sourceRef="Activity_0dz3i2m" targetRef="Activity_08papqw">
 +      <conditionExpression xsi:type="tFormalExpression" />
 +    </sequenceFlow>
 +    <sequenceFlow id="Flow_1bwpf18" sourceRef="Activity_08papqw" targetRef="Gateway_14rc2cm" />
 +    <sequenceFlow id="Flow_00a1mlo" sourceRef="Activity_0poa1n1" targetRef="Gateway_14rc2cm" />
 +  </process>
 +  <bpmndi:BPMNDiagram id="BpmnDiagram_1">
 +    <bpmndi:BPMNPlane id="BpmnPlane_1" bpmnElement="Process_1fohfju">
 +      <bpmndi:BPMNShape id="Activity_0dz3i2m_di" bpmnElement="Activity_0dz3i2m">
 +        <omgdc:Bounds x="350" y="200" width="100" height="80" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Gateway_1biwend_di" bpmnElement="Gateway_14rc2cm">
 +        <omgdc:Bounds x="655" y="215" width="50" height="50" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Activity_0px2wls_di" bpmnElement="Activity_0px2wls">
 +        <omgdc:Bounds x="510" y="200" width="100" height="80" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Activity_0poa1n1_di" bpmnElement="Activity_0poa1n1">
 +        <omgdc:Bounds x="510" y="70" width="100" height="80" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNShape id="Activity_08papqw_di" bpmnElement="Activity_08papqw">
 +        <omgdc:Bounds x="510" y="320" width="100" height="80" />
 +      </bpmndi:BPMNShape>
 +      <bpmndi:BPMNEdge id="Flow_0yhgogy_di" bpmnElement="Flow_0yhgogy">
 +        <omgdi:waypoint x="450" y="240" />
 +        <omgdi:waypoint x="510" y="240" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_0xdfiky_di" bpmnElement="Flow_0xdfiky">
 +        <omgdi:waypoint x="610" y="240" />
 +        <omgdi:waypoint x="655" y="240" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_17w8cch_di" bpmnElement="Flow_17w8cch">
 +        <omgdi:waypoint x="400" y="200" />
 +        <omgdi:waypoint x="400" y="110" />
 +        <omgdi:waypoint x="510" y="110" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_1erz2cg_di" bpmnElement="Flow_1erz2cg">
 +        <omgdi:waypoint x="400" y="280" />
 +        <omgdi:waypoint x="400" y="360" />
 +        <omgdi:waypoint x="510" y="360" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_1bwpf18_di" bpmnElement="Flow_1bwpf18">
 +        <omgdi:waypoint x="610" y="360" />
 +        <omgdi:waypoint x="680" y="360" />
 +        <omgdi:waypoint x="680" y="265" />
 +      </bpmndi:BPMNEdge>
 +      <bpmndi:BPMNEdge id="Flow_00a1mlo_di" bpmnElement="Flow_00a1mlo">
 +        <omgdi:waypoint x="610" y="110" />
 +        <omgdi:waypoint x="680" y="110" />
 +        <omgdi:waypoint x="680" y="215" />
 +      </bpmndi:BPMNEdge>
 +    </bpmndi:BPMNPlane>
 +  </bpmndi:BPMNDiagram>
 +</definitions>
 +</bpmnio>
 +
 +===== See also =====
 +
 +  * [[en:rule:do_not_use_conditional_flows]]
 +
 +===== Author(s) =====
 +
 + --- //[[user:bell|Anatoly Belaychuk]] 2024-01-25 09:24//