Home » Modeling » UML2 » Need pointers for an UML2 model containing Interaction
| Need pointers for an UML2 model containing Interaction [message #472920] |
Sun, 20 May 2007 22:31  |
Eclipse User |
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Hi,
I am trying to figure out how to programmatically write an UML2 based
model file containing an interaction (trace of method calls).
I would greatly appreciate if anyone can point me to an example model
file containing interactions that includes lifelines, and messages; or a
code snippet for programmatically writing an UML2 interaction.
I did look into UML2 specification from OMG regarding interactions
(pages 472-479), but I didn't know if it is the only document we have
for understanding/getting-started with interactions.
Any advise/tips on understanding Eclipse UML2 interactions are greatly
appreciated.
Thanks
Sri
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| Re: Need pointers for an UML2 model containing Interaction [message #472975 is a reply to message #472927] |
Wed, 23 May 2007 08:58  |
| Eclipse User |
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|
Hey,
Ok this is what I have figured out so far. Assuming you have two classes
"Class class1, class2" that have been created previously in the same
package (myPackage).
Firstly create a collaboration:
Collaboration coll = UMLFactory.eINSTANCE.createCollaboration();
coll.setPackage(myPackage);
Then an interaction in the collaboration:
Interaction interaction = (Interaction) coll.createOwnedBehavior(null,
UMLPackage.eINSTANCE.getInteraction());
Create a lifeline for class you want to represent and a corresponding
property that refers to the class.
Lifeline life1 = interaction.createLifeline("");
Property refClass1 = interaction.createOwnedAttribute("", class1);
life1.setRepresents(refClass1);
Lifeline life2 = interaction.createLifeline("");
Property refClass1 = interaction.createOwnedAttribute("", class2);
life2.setRepresents(refClass2);
Now create a message "myMessage" that you want to send from life1 to life2:
Message myMessage = interaction.createMessage("");
Now you need a MOS at each lifeline to tell where the message occurs.
MessageOccurrenceSpecification mos1 = (MessageOccurrenceSpecification)
interaction.createFragment(null,
UMLPackage.Literals.MESSAGE_OCCURRENCE_SPECIFICATION);
mos1.getCovereds().add(life1);
mos1.setMessage(myMessage);
MessageOccurrenceSpecification mos2 = (MessageOccurrenceSpecification)
interaction.createFragment(null,
UMLPackage.Literals.MESSAGE_OCCURRENCE_SPECIFICATION);
mos2.getCovereds().add(life2);
mos2.setMessage(myMessage);
Now attach the message to these MOS. (An MOS is a messageEnd remember?)
myMessage.setReceiveEvent(mos1);
myMessage.setSendEvent(mos2);
Ok next we need MessageEvents. Assume "myOp" is an operation in
class2... "Operation myOp"
SendOperationEvent sendOperationEvent =
UMLFactory.eINSTANCE.createSendOperationEvent();
sendOperationEvent = (SendOperationEvent)
cross.createPackagedElement(null, sendOperationEvent.eClass());
sendOperationEvent.setOperation(myOp);
mos1.setEvent(sendOperationEvent);
ReceiveOperationEvent receiveEvent =
UMLFactory.eINSTANCE.createReceiveOperationEvent();
receiveEvent = (ReceiveOperationEvent) cross.createPackagedElement(null,
receiveEvent2.eClass());
receiveEvent.setOperation(myOp);
mos2.setEvent(receiveEvent);
and thats all it takes to send a message from one lifeline to another...
I hope that works, I couldn't find an application that would load the
diagram for me so I'm not 100% but I reversed engineered it from Magicdraw.
Regards,
Andrew.
James Bruck wrote:
> Hi Sri,
>
> You are off to a good start... some minor points...
>
> - MessageOccurrenceSpecification's are OccurrenceSpecifications that require
> an actual "Event" to be set. see "setEvent()" on OccurrenceSpecification.
>
> - Have a look at the migration document for some explanations of
> MessageOccurrenceSpecification etc.
> http://www.eclipse.org/modeling/mdt/uml2/docs/guides/UML2_2. 0_Migration_Guide/guide.html
>
> - EventOccurrence is the old metatype that no longer exists in the latest
> version of UML. Various subtypes of OccurrenceSpecifications replace
> EventOccurrence. I'm guessing you have an older version of MagicDraw or
> they did not upgrade to the latest version of opensource UML ( I don't use
> MagicDraw so I can't comment on that ).
>
> - You might want to scan the older newsgroup postings for examples and more
> information ( eclipse.tools.uml2 )
>
>
> Regards,
>
> - James.
>
>
> "Sri Raguraman" <srikrishnanr@yahoo.com> wrote in message
> news:f2rej9$urq$1@build.eclipse.org...
>> Sri Raguraman wrote:
>>> Hi,
>>> I am trying to figure out how to programmatically write an UML2 based
>>> model file containing an interaction (trace of method calls).
>>>
>>> I would greatly appreciate if anyone can point me to an example model
>>> file containing interactions that includes lifelines, and messages; or a
>>> code snippet for programmatically writing an UML2 interaction.
>>>
>>> I did look into UML2 specification from OMG regarding interactions
>>> (pages 472-479), but I didn't know if it is the only document we have
>>> for understanding/getting-started with interactions.
>>>
>>> Any advise/tips on understanding Eclipse UML2 interactions are greatly
>>> appreciated.
>>>
>>> Thanks
>>> Sri
>> Hi,
>> Ok, I looked at OMG UML2 specification (chapter 14 Interaction) and
>> Eclipse-UML2 javadoc and thought I would attempt to implement a simple
>> interaction between two classes using Eclipse-UML2 package.
>>
>> I would be grateful if someone could glance at the below code and let me
>> know if there is anything wrong or if there is a better way of
>> implementing the same. I would also appreciate if anyone could point me
>> to some sample code involving interactions. My google search doesn't
>> seem to really help me.
>>
>> This diagram is what I eventually need:
>> +---+ +---+
>> |:C1| |:C2|
>> +---+ +---+
>> | f |
>> +----------->|
>> | |
>>
>>
>> << code begin >>
>> Interaction i1 = UMLFactory.eINSTANCE.createInteraction();
>> i1.setName("SampleInteraction");
>>
>> Lifeline l1 = i1.createLifeline("class1");
>> Lifeline l2 = i1.createLifeline("class2");
>> l1.setInteraction(i1); l2.setInteraction(i1);
>>
>> Message m1 = UMLFactory.eINSTANCE.createMessage();
>> m1.setInteraction(i1);
>> m1.setName("f");
>>
>> MessageOccurrenceSpecification f1 =
>> UMLFactory.eINSTANCE.createMessageOccurrenceSpecification();
>> MessageOccurrenceSpecification f2 =
>> UMLFactory.eINSTANCE.createMessageOccurrenceSpecification();
>> f1.getCovereds().add(l1);
>> f2.getCovereds().add(l2);
>>
>> m1.setSendEvent(f1);
>> m1.setReceiveEvent(f2);
>>
>> f1.setEnclosingInteraction(i1); f2.setEnclosingInteraction(i1);
>> f1.setMessage(m1); f2.setMessage(m1);
>>
>> << code end >>
>>
>> It gave me this output:
>> <?xml version="1.0" encoding="UTF-8"?>
>> <uml:Interaction xmi:version="2.1"
>> xmlns:xmi="http://schema.omg.org/spec/XMI/2.1"
>> xmlns:uml="http://www.eclipse.org/uml2/2.1.0/UML"
>> xmi:id="_honrQAdhEdyLBZgVBW-5Iw" name="SampleInteraction">
>> <lifeline xmi:id="_hoxcQAdhEdyLBZgVBW-5Iw" name="class1"
>> coveredBy="_hoxcQgdhEdyLBZgVBW-5Iw"/>
>> <lifeline xmi:id="_hoxcQQdhEdyLBZgVBW-5Iw" name="class2"
>> coveredBy="_hoxcQwdhEdyLBZgVBW-5Iw"/>
>> <fragment xmi:type="uml:MessageOccurrenceSpecification"
>> xmi:id="_hoxcQgdhEdyLBZgVBW-5Iw" covered="_hoxcQAdhEdyLBZgVBW-5Iw"
>> message="_hoxcRAdhEdyLBZgVBW-5Iw"/>
>> <fragment xmi:type="uml:MessageOccurrenceSpecification"
>> xmi:id="_hoxcQwdhEdyLBZgVBW-5Iw" covered="_hoxcQQdhEdyLBZgVBW-5Iw"
>> message="_hoxcRAdhEdyLBZgVBW-5Iw"/>
>> <message xmi:id="_hoxcRAdhEdyLBZgVBW-5Iw" name="f"
>> receiveEvent="_hoxcQwdhEdyLBZgVBW-5Iw"
> sendEvent="_hoxcQgdhEdyLBZgVBW-5Iw"/>
>> </uml:Interaction>
>>
>>
>> 1. Am I going in the right direction?
>> 2. Should I be using MessageOccurrenceSpecification or something else.
>> 3. Drew the same diagram in MagicDraw CE and its output contained
>> uml:EventOccurrence. What is EventOccurrence - couldn't find it in UML2
>> spec.
>
>
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| Re: Need pointers for an UML2 model containing Interaction [message #617168 is a reply to message #472920] |
Mon, 21 May 2007 02:35 |
| Eclipse User |
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|
|
Sri Raguraman wrote:
> Hi,
> I am trying to figure out how to programmatically write an UML2 based
> model file containing an interaction (trace of method calls).
>
> I would greatly appreciate if anyone can point me to an example model
> file containing interactions that includes lifelines, and messages; or a
> code snippet for programmatically writing an UML2 interaction.
>
> I did look into UML2 specification from OMG regarding interactions
> (pages 472-479), but I didn't know if it is the only document we have
> for understanding/getting-started with interactions.
>
> Any advise/tips on understanding Eclipse UML2 interactions are greatly
> appreciated.
>
> Thanks
> Sri
Hi,
Ok, I looked at OMG UML2 specification (chapter 14 Interaction) and
Eclipse-UML2 javadoc and thought I would attempt to implement a simple
interaction between two classes using Eclipse-UML2 package.
I would be grateful if someone could glance at the below code and let me
know if there is anything wrong or if there is a better way of
implementing the same. I would also appreciate if anyone could point me
to some sample code involving interactions. My google search doesn't
seem to really help me.
This diagram is what I eventually need:
+---+ +---+
|:C1| |:C2|
+---+ +---+
| f |
+----------->|
| |
<< code begin >>
Interaction i1 = UMLFactory.eINSTANCE.createInteraction();
i1.setName("SampleInteraction");
Lifeline l1 = i1.createLifeline("class1");
Lifeline l2 = i1.createLifeline("class2");
l1.setInteraction(i1); l2.setInteraction(i1);
Message m1 = UMLFactory.eINSTANCE.createMessage();
m1.setInteraction(i1);
m1.setName("f");
MessageOccurrenceSpecification f1 =
UMLFactory.eINSTANCE.createMessageOccurrenceSpecification();
MessageOccurrenceSpecification f2 =
UMLFactory.eINSTANCE.createMessageOccurrenceSpecification();
f1.getCovereds().add(l1);
f2.getCovereds().add(l2);
m1.setSendEvent(f1);
m1.setReceiveEvent(f2);
f1.setEnclosingInteraction(i1); f2.setEnclosingInteraction(i1);
f1.setMessage(m1); f2.setMessage(m1);
<< code end >>
It gave me this output:
<?xml version="1.0" encoding="UTF-8"?>
<uml:Interaction xmi:version="2.1"
xmlns:xmi="http://schema.omg.org/spec/XMI/2.1"
xmlns:uml="http://www.eclipse.org/uml2/2.1.0/UML"
xmi:id="_honrQAdhEdyLBZgVBW-5Iw" name="SampleInteraction">
<lifeline xmi:id="_hoxcQAdhEdyLBZgVBW-5Iw" name="class1"
coveredBy="_hoxcQgdhEdyLBZgVBW-5Iw"/>
<lifeline xmi:id="_hoxcQQdhEdyLBZgVBW-5Iw" name="class2"
coveredBy="_hoxcQwdhEdyLBZgVBW-5Iw"/>
<fragment xmi:type="uml:MessageOccurrenceSpecification"
xmi:id="_hoxcQgdhEdyLBZgVBW-5Iw" covered="_hoxcQAdhEdyLBZgVBW-5Iw"
message="_hoxcRAdhEdyLBZgVBW-5Iw"/>
<fragment xmi:type="uml:MessageOccurrenceSpecification"
xmi:id="_hoxcQwdhEdyLBZgVBW-5Iw" covered="_hoxcQQdhEdyLBZgVBW-5Iw"
message="_hoxcRAdhEdyLBZgVBW-5Iw"/>
<message xmi:id="_hoxcRAdhEdyLBZgVBW-5Iw" name="f"
receiveEvent="_hoxcQwdhEdyLBZgVBW-5Iw" sendEvent="_hoxcQgdhEdyLBZgVBW-5Iw"/>
</uml:Interaction>
1. Am I going in the right direction?
2. Should I be using MessageOccurrenceSpecification or something else.
3. Drew the same diagram in MagicDraw CE and its output contained
uml:EventOccurrence. What is EventOccurrence - couldn't find it in UML2
spec.
|
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| Re: Need pointers for an UML2 model containing Interaction [message #617174 is a reply to message #472921] |
Tue, 22 May 2007 10:11 |
| Eclipse User |
|
|
|
Hi Sri,
You are off to a good start... some minor points...
- MessageOccurrenceSpecification's are OccurrenceSpecifications that require
an actual "Event" to be set. see "setEvent()" on OccurrenceSpecification.
- Have a look at the migration document for some explanations of
MessageOccurrenceSpecification etc.
http://www.eclipse.org/modeling/mdt/uml2/docs/guides/UML2_2. 0_Migration_Guide/guide.html
- EventOccurrence is the old metatype that no longer exists in the latest
version of UML. Various subtypes of OccurrenceSpecifications replace
EventOccurrence. I'm guessing you have an older version of MagicDraw or
they did not upgrade to the latest version of opensource UML ( I don't use
MagicDraw so I can't comment on that ).
- You might want to scan the older newsgroup postings for examples and more
information ( eclipse.tools.uml2 )
Regards,
- James.
"Sri Raguraman" <srikrishnanr@yahoo.com> wrote in message
news:f2rej9$urq$1@build.eclipse.org...
> Sri Raguraman wrote:
> > Hi,
> > I am trying to figure out how to programmatically write an UML2 based
> > model file containing an interaction (trace of method calls).
> >
> > I would greatly appreciate if anyone can point me to an example model
> > file containing interactions that includes lifelines, and messages; or a
> > code snippet for programmatically writing an UML2 interaction.
> >
> > I did look into UML2 specification from OMG regarding interactions
> > (pages 472-479), but I didn't know if it is the only document we have
> > for understanding/getting-started with interactions.
> >
> > Any advise/tips on understanding Eclipse UML2 interactions are greatly
> > appreciated.
> >
> > Thanks
> > Sri
>
> Hi,
> Ok, I looked at OMG UML2 specification (chapter 14 Interaction) and
> Eclipse-UML2 javadoc and thought I would attempt to implement a simple
> interaction between two classes using Eclipse-UML2 package.
>
> I would be grateful if someone could glance at the below code and let me
> know if there is anything wrong or if there is a better way of
> implementing the same. I would also appreciate if anyone could point me
> to some sample code involving interactions. My google search doesn't
> seem to really help me.
>
> This diagram is what I eventually need:
> +---+ +---+
> |:C1| |:C2|
> +---+ +---+
> | f |
> +----------->|
> | |
>
>
> << code begin >>
> Interaction i1 = UMLFactory.eINSTANCE.createInteraction();
> i1.setName("SampleInteraction");
>
> Lifeline l1 = i1.createLifeline("class1");
> Lifeline l2 = i1.createLifeline("class2");
> l1.setInteraction(i1); l2.setInteraction(i1);
>
> Message m1 = UMLFactory.eINSTANCE.createMessage();
> m1.setInteraction(i1);
> m1.setName("f");
>
> MessageOccurrenceSpecification f1 =
> UMLFactory.eINSTANCE.createMessageOccurrenceSpecification();
> MessageOccurrenceSpecification f2 =
> UMLFactory.eINSTANCE.createMessageOccurrenceSpecification();
> f1.getCovereds().add(l1);
> f2.getCovereds().add(l2);
>
> m1.setSendEvent(f1);
> m1.setReceiveEvent(f2);
>
> f1.setEnclosingInteraction(i1); f2.setEnclosingInteraction(i1);
> f1.setMessage(m1); f2.setMessage(m1);
>
> << code end >>
>
> It gave me this output:
> <?xml version="1.0" encoding="UTF-8"?>
> <uml:Interaction xmi:version="2.1"
> xmlns:xmi="http://schema.omg.org/spec/XMI/2.1"
> xmlns:uml="http://www.eclipse.org/uml2/2.1.0/UML"
> xmi:id="_honrQAdhEdyLBZgVBW-5Iw" name="SampleInteraction">
> <lifeline xmi:id="_hoxcQAdhEdyLBZgVBW-5Iw" name="class1"
> coveredBy="_hoxcQgdhEdyLBZgVBW-5Iw"/>
> <lifeline xmi:id="_hoxcQQdhEdyLBZgVBW-5Iw" name="class2"
> coveredBy="_hoxcQwdhEdyLBZgVBW-5Iw"/>
> <fragment xmi:type="uml:MessageOccurrenceSpecification"
> xmi:id="_hoxcQgdhEdyLBZgVBW-5Iw" covered="_hoxcQAdhEdyLBZgVBW-5Iw"
> message="_hoxcRAdhEdyLBZgVBW-5Iw"/>
> <fragment xmi:type="uml:MessageOccurrenceSpecification"
> xmi:id="_hoxcQwdhEdyLBZgVBW-5Iw" covered="_hoxcQQdhEdyLBZgVBW-5Iw"
> message="_hoxcRAdhEdyLBZgVBW-5Iw"/>
> <message xmi:id="_hoxcRAdhEdyLBZgVBW-5Iw" name="f"
> receiveEvent="_hoxcQwdhEdyLBZgVBW-5Iw"
sendEvent="_hoxcQgdhEdyLBZgVBW-5Iw"/>
> </uml:Interaction>
>
>
> 1. Am I going in the right direction?
> 2. Should I be using MessageOccurrenceSpecification or something else.
> 3. Drew the same diagram in MagicDraw CE and its output contained
> uml:EventOccurrence. What is EventOccurrence - couldn't find it in UML2
> spec.
|
|
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| Re: Need pointers for an UML2 model containing Interaction [message #617182 is a reply to message #472927] |
Wed, 23 May 2007 08:58 |
| Eclipse User |
|
|
|
Hey,
Ok this is what I have figured out so far. Assuming you have two classes
"Class class1, class2" that have been created previously in the same
package (myPackage).
Firstly create a collaboration:
Collaboration coll = UMLFactory.eINSTANCE.createCollaboration();
coll.setPackage(myPackage);
Then an interaction in the collaboration:
Interaction interaction = (Interaction) coll.createOwnedBehavior(null,
UMLPackage.eINSTANCE.getInteraction());
Create a lifeline for class you want to represent and a corresponding
property that refers to the class.
Lifeline life1 = interaction.createLifeline("");
Property refClass1 = interaction.createOwnedAttribute("", class1);
life1.setRepresents(refClass1);
Lifeline life2 = interaction.createLifeline("");
Property refClass1 = interaction.createOwnedAttribute("", class2);
life2.setRepresents(refClass2);
Now create a message "myMessage" that you want to send from life1 to life2:
Message myMessage = interaction.createMessage("");
Now you need a MOS at each lifeline to tell where the message occurs.
MessageOccurrenceSpecification mos1 = (MessageOccurrenceSpecification)
interaction.createFragment(null,
UMLPackage.Literals.MESSAGE_OCCURRENCE_SPECIFICATION);
mos1.getCovereds().add(life1);
mos1.setMessage(myMessage);
MessageOccurrenceSpecification mos2 = (MessageOccurrenceSpecification)
interaction.createFragment(null,
UMLPackage.Literals.MESSAGE_OCCURRENCE_SPECIFICATION);
mos2.getCovereds().add(life2);
mos2.setMessage(myMessage);
Now attach the message to these MOS. (An MOS is a messageEnd remember?)
myMessage.setReceiveEvent(mos1);
myMessage.setSendEvent(mos2);
Ok next we need MessageEvents. Assume "myOp" is an operation in
class2... "Operation myOp"
SendOperationEvent sendOperationEvent =
UMLFactory.eINSTANCE.createSendOperationEvent();
sendOperationEvent = (SendOperationEvent)
cross.createPackagedElement(null, sendOperationEvent.eClass());
sendOperationEvent.setOperation(myOp);
mos1.setEvent(sendOperationEvent);
ReceiveOperationEvent receiveEvent =
UMLFactory.eINSTANCE.createReceiveOperationEvent();
receiveEvent = (ReceiveOperationEvent) cross.createPackagedElement(null,
receiveEvent2.eClass());
receiveEvent.setOperation(myOp);
mos2.setEvent(receiveEvent);
and thats all it takes to send a message from one lifeline to another...
I hope that works, I couldn't find an application that would load the
diagram for me so I'm not 100% but I reversed engineered it from Magicdraw.
Regards,
Andrew.
James Bruck wrote:
> Hi Sri,
>
> You are off to a good start... some minor points...
>
> - MessageOccurrenceSpecification's are OccurrenceSpecifications that require
> an actual "Event" to be set. see "setEvent()" on OccurrenceSpecification.
>
> - Have a look at the migration document for some explanations of
> MessageOccurrenceSpecification etc.
> http://www.eclipse.org/modeling/mdt/uml2/docs/guides/UML2_2. 0_Migration_Guide/guide.html
>
> - EventOccurrence is the old metatype that no longer exists in the latest
> version of UML. Various subtypes of OccurrenceSpecifications replace
> EventOccurrence. I'm guessing you have an older version of MagicDraw or
> they did not upgrade to the latest version of opensource UML ( I don't use
> MagicDraw so I can't comment on that ).
>
> - You might want to scan the older newsgroup postings for examples and more
> information ( eclipse.tools.uml2 )
>
>
> Regards,
>
> - James.
>
>
> "Sri Raguraman" <srikrishnanr@yahoo.com> wrote in message
> news:f2rej9$urq$1@build.eclipse.org...
>> Sri Raguraman wrote:
>>> Hi,
>>> I am trying to figure out how to programmatically write an UML2 based
>>> model file containing an interaction (trace of method calls).
>>>
>>> I would greatly appreciate if anyone can point me to an example model
>>> file containing interactions that includes lifelines, and messages; or a
>>> code snippet for programmatically writing an UML2 interaction.
>>>
>>> I did look into UML2 specification from OMG regarding interactions
>>> (pages 472-479), but I didn't know if it is the only document we have
>>> for understanding/getting-started with interactions.
>>>
>>> Any advise/tips on understanding Eclipse UML2 interactions are greatly
>>> appreciated.
>>>
>>> Thanks
>>> Sri
>> Hi,
>> Ok, I looked at OMG UML2 specification (chapter 14 Interaction) and
>> Eclipse-UML2 javadoc and thought I would attempt to implement a simple
>> interaction between two classes using Eclipse-UML2 package.
>>
>> I would be grateful if someone could glance at the below code and let me
>> know if there is anything wrong or if there is a better way of
>> implementing the same. I would also appreciate if anyone could point me
>> to some sample code involving interactions. My google search doesn't
>> seem to really help me.
>>
>> This diagram is what I eventually need:
>> +---+ +---+
>> |:C1| |:C2|
>> +---+ +---+
>> | f |
>> +----------->|
>> | |
>>
>>
>> << code begin >>
>> Interaction i1 = UMLFactory.eINSTANCE.createInteraction();
>> i1.setName("SampleInteraction");
>>
>> Lifeline l1 = i1.createLifeline("class1");
>> Lifeline l2 = i1.createLifeline("class2");
>> l1.setInteraction(i1); l2.setInteraction(i1);
>>
>> Message m1 = UMLFactory.eINSTANCE.createMessage();
>> m1.setInteraction(i1);
>> m1.setName("f");
>>
>> MessageOccurrenceSpecification f1 =
>> UMLFactory.eINSTANCE.createMessageOccurrenceSpecification();
>> MessageOccurrenceSpecification f2 =
>> UMLFactory.eINSTANCE.createMessageOccurrenceSpecification();
>> f1.getCovereds().add(l1);
>> f2.getCovereds().add(l2);
>>
>> m1.setSendEvent(f1);
>> m1.setReceiveEvent(f2);
>>
>> f1.setEnclosingInteraction(i1); f2.setEnclosingInteraction(i1);
>> f1.setMessage(m1); f2.setMessage(m1);
>>
>> << code end >>
>>
>> It gave me this output:
>> <?xml version="1.0" encoding="UTF-8"?>
>> <uml:Interaction xmi:version="2.1"
>> xmlns:xmi="http://schema.omg.org/spec/XMI/2.1"
>> xmlns:uml="http://www.eclipse.org/uml2/2.1.0/UML"
>> xmi:id="_honrQAdhEdyLBZgVBW-5Iw" name="SampleInteraction">
>> <lifeline xmi:id="_hoxcQAdhEdyLBZgVBW-5Iw" name="class1"
>> coveredBy="_hoxcQgdhEdyLBZgVBW-5Iw"/>
>> <lifeline xmi:id="_hoxcQQdhEdyLBZgVBW-5Iw" name="class2"
>> coveredBy="_hoxcQwdhEdyLBZgVBW-5Iw"/>
>> <fragment xmi:type="uml:MessageOccurrenceSpecification"
>> xmi:id="_hoxcQgdhEdyLBZgVBW-5Iw" covered="_hoxcQAdhEdyLBZgVBW-5Iw"
>> message="_hoxcRAdhEdyLBZgVBW-5Iw"/>
>> <fragment xmi:type="uml:MessageOccurrenceSpecification"
>> xmi:id="_hoxcQwdhEdyLBZgVBW-5Iw" covered="_hoxcQQdhEdyLBZgVBW-5Iw"
>> message="_hoxcRAdhEdyLBZgVBW-5Iw"/>
>> <message xmi:id="_hoxcRAdhEdyLBZgVBW-5Iw" name="f"
>> receiveEvent="_hoxcQwdhEdyLBZgVBW-5Iw"
> sendEvent="_hoxcQgdhEdyLBZgVBW-5Iw"/>
>> </uml:Interaction>
>>
>>
>> 1. Am I going in the right direction?
>> 2. Should I be using MessageOccurrenceSpecification or something else.
>> 3. Drew the same diagram in MagicDraw CE and its output contained
>> uml:EventOccurrence. What is EventOccurrence - couldn't find it in UML2
>> spec.
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