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Chapter 7. openETCS Meta Model 5 s t a t e | 6 s t a t e . m_pDecomposition . m_ObjectSet−>s e l e c t (m_Type = ’ oStateGuard ’ )−>f o r A l l ( 7 guard | 8 graph . m_BindingSet−>s e l e c t ( 9 m_Connection . m_Calls−>e x i s t s ( m_pObject = mode and m_pRole . m_Type = ’ CurrentState ’ ) 10 )−>e x i s t s ( 11 m_pRelationship . m_Properties−>any (m_Type = ’ StateGuard ’ ) . m_NonProperties−>any (m_Type = ’ StateGuard ’ ) = guard 12 ) 13 ) 14 ) 15 ) Listing 7.12: gFunctionBlock constraint 7 Since the concrete syntax only uses the atomic types 11 for input and output ports, it must be ensured that in each data flow both are of the same type. 1 context CProject 2 inv : m_GraphSet−>s e l e c t (m_Type = ’ gMainFunctionBlock ’ ) . m_BindingSet−>f o r A l l ( 3 binding | 4 binding . m_Connection . m_Calls . m_pPort . m_Type−>a s S e t ( )−>s i z e ( ) = 1 5 ) Listing 7.13: gFunctionBlock constraint 8 A final constraint for gMainFunctionBlock was already derived in Subsection 7.3.2 that requires that no oStateGuard objects may exist in a gMainFunctionBlock graph. 1 context CProject 2 inv : m_GraphSet−>s e l e c t (m_Type = ’ gMainFunctionBlock ’ ) . m_ObjectSet−>s e l e c t (m_Type = ’ oStateGuard ’ )−>s i z e ( ) = 0 Listing 7.14: gFunctionBlock constraint 9 7.5.3. gEmbeddedStateMachine Graph Type Similar to the gEVCStateMachine graph type, it is required that the oStateGuard objects used as guards in StateTransition relationships exist in the decomposition of the oEmbeddedState object on the connected CurrentState role. 1 context CProject 2 inv : m_GraphSet−>s e l e c t (m_Type = ’ gEmbeddedStateMachine ’ )−>f o r A l l ( 3 graph | 4 graph . m_RelationshipSet−>s e l e c t (m_Type = ’ S t a t e T r a n s i t i o n ’ )−>f o r A l l ( 5 r e l a t i o n s h i p | 6 graph . m_BindingSet−>e x i s t s ( 7 m_Connection . m_pRole . m_Type = ’ CurrentState ’ 8 and 9 m_Connection . m_Calls−>e x i s t s ( 10 m_pObject . m_pDecomposition . m_ObjectSet−>i n c l u d e s ( 11 r e l a t i o n s h i p . m_Properties−>any (m_Type = ’ StateGuard ’ ) . m_NonProperties−>any (m_Type = ’ oStateGuard ’ ) 12 ) 13 ) 11 atomicInput and atomicOutput 102
7.5. Static Semantics for Models 14 ) 15 ) 16 ) Listing 7.15: gEmbeddedStateMachine constraint 1 This constraint implicitly defines that all oEmbeddedState objects have a decomposition. A state machine always needs to have exact one initial state to be able to start. 1 context CProject 2 inv : m_GraphSet−>s e l e c t (m_Type = ’ gEmbeddedStateMachine ’ )−>f o r A l l ( 3 graph | 4 graph . m_ObjectSet . s e l e c t (m_Type = ’ oEmbeddedInitialState ’ )−>s i z e ( ) = 1 5 ) Listing 7.16: gEmbeddedStateMachine constraint 2 Additionally, each oEmbeddedInitialState object must be exact in one current state role or rather an InitialTransition relationship. 1 context CProject 2 inv : m_GraphSet−>s e l e c t (m_Type = ’ gEmbeddedStateMachine ’ )−>f o r A l l ( 3 graph | 4 graph . m_BindingSet−>s e l e c t ( m_pRelationship . m_Type = ’ I n i t i a l T r a n s i t i o n ’ )−>s i z e ( ) = 1 5 ) Listing 7.17: gEmbeddedStateMachine constraint 3 It is necessary that all oEmbeddedState objects are in at least one CurrentState role to avoid dead locks / states. 1 context CProject 2 inv : m_GraphSet−>s e l e c t (m_Type = ’ gEmbeddedStateMachine ’ )−>f o r A l l ( 3 graph | 4 graph . m_ObjectSet−>s e l e c t (m_Type = ’ oEmbeddedState ’ )−>f o r A l l ( 5 o b j e c t | 6 graph . m_BindingSet−>s e l e c t ( m_pRelationship . m_Type = ’ T r a n s i t i o n ’ ) . m_Connection . m_Calls−>s e l e c t (m_pRole . m_Type = ’ CurrentState ’ and m_pObject = o b j e c t )−>s i z e ( ) >= 1 7 ) 8 ) Listing 7.18: gEmbeddedStateMachine constraint 4 Similar to the constraint for non-concurrent priorities for transition of ETCS Modes in Subsection 7.5.1, also those situations must be avoided for the priority of transitions of embedded state machines. 1 context CProject 2 inv : m_GraphSet−>s e l e c t (m_Type = ’ gEmbeddedStateMachine ’ )−>f o r A l l ( 3 graph | 4 graph . m_ObjectSet−>s e l e c t (m_Type = ’ oEmbeddedState ’ )−>f o r A l l ( 5 s t a t e | 6 graph . m_BindingSet−>s e l e c t ( m_Connection . m_Calls−>e x i s t s ( m_pObject = s t a t e ) ) . m_pRelationship−>s e l e c t (m_Type = ’ T r a n s i t i o n ’ ) . m_Properties−>s e l e c t (m_Type = ’ P r i o r i t y ’ )−>isUnique (m_Value) 7 ) 8 ) Listing 7.19: gEmbeddedStateMachine constraint 5 103
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Open Source Software for Train Cont
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Datum des Promotionskolloquiums: 21
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Acknowledgments I would like to tha
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Abstract This document describes th
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Contents 3.3.3. Rascal . . . . . .
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Contents 8.4. Behavioural Design .
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Contents D.3. Domain Framework Mode
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List of Figures 6.4. Simple CORBA u
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List of Figures 10.27. General read
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Chapter 1. Introduction Railway Con
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Chapter 1. Introduction MontiCore M
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Chapter 1. Introduction ERTMS Forma
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Part I. Background 9
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Chapter 2. Concepts for Safe Railwa
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4.1. Concrete Syntax Description Fo
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4.2. GOPPRR C++ Abstract Syntax Mod
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4.2. GOPPRR C++ Abstract Syntax Mod
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4.5. The Object Constraint Language
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4.5. The Object Constraint Language
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Chapter 10. openETCS Model be expla
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11 openETCS Simulation Generally, a
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11.3. Simulation Model 11.3.2. CDMI
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11.3. Simulation Model sets the Boo
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11.3. Simulation Model Figure 11.13
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Chapter 12. Conclusion and Outlook
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Part IV. Appendix 241
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Appendix A. GOPPRR to MOF Transform
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Appendix B. openETCS Meta Model Con
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DopenETCS Domain Framework D.1. Dom
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D.2. Domain Framework Source Code 8
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Appendix E. openETCS Generator 39 <
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FMetaEdit+ Generators F.1. GOPPRR X
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GopenETCS Unit Testing G.1. Unit Te
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Appendix H. openETCS Simulation 14
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Glossary ANTLR ANother Tool for Lan
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Glossary EVC An European Vital Comp
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Glossary OEM An original equipment
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Glossary XML The Extensible Markup
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Bibliography [12] “EN 50128 - Rai
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Bibliography [39] ——, ““Ope
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Bibliography [69] T. J. Parr and R.
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Index Artefact, 51 Automatic train
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Index Linux, 149 Memory management,
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