systemcomposer.query.Constraint

Query constraint

Description

The Constraint class is the base class for all System Composer™ query constraints.

Object Functions

AnyComponent	Create query to select all components in model
IsStereotypeDerivedFrom	Create query to select stereotype derived from qualified name
HasStereotype	Create query to select architecture elements with stereotype based on specified sub-constraint
HasPort	Create query to select architecture elements with port on component based on specified sub-constraint
HasInterface	Create query to select architecture elements with interface on port based on specified sub-constraint
HasInterfaceElement	Create query to select architecture elements with interface element on interface based on specified sub-constraint
IsInRange	Create query to select range of property values
Property	Create query to select non-evaluated values for object properties or stereotype properties for elements
PropertyValue	Create query to select property from object or stereotype property and then evaluate property value

Examples

Find Elements in Model Using Queries

Find components in a System Composer model using queries.

Open the model.

import systemcomposer.query.*

scKeylessEntrySystem
model = systemcomposer.loadModel('KeylessEntryArchitecture');

Find all the software components in the system.

con1 = HasStereotype(Property("Name") == "SoftwareComponent");
[compPaths, compObjs] = model.find(con1)

compPaths = 5x1 cell
    {'KeylessEntryArchitecture/Engine Control System/Keyless Start Controller'}
    {'KeylessEntryArchitecture/Lighting System/Lighting Controller'           }
    {'KeylessEntryArchitecture/Sound System/Sound Controller'                 }
    {'KeylessEntryArchitecture/FOB Locator System/FOB Locator Module'         }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Door Lock Controller' }

compObjs=1×5 object
  1x5 Component array with properties:

    IsAdapterComponent
    Architecture
    ReferenceName
    Name
    Parent
    Ports
    OwnedPorts
    OwnedArchitecture
    Position
    Model
    SimulinkHandle
    SimulinkModelHandle
    UUID
    ExternalUID

% Include reference models in the search
softwareComps = model.find(con1, 'IncludeReferenceModels', true)

softwareComps = 9x1 cell
    {'KeylessEntryArchitecture/Engine Control System/Keyless Start Controller'                                }
    {'KeylessEntryArchitecture/Lighting System/Lighting Controller'                                           }
    {'KeylessEntryArchitecture/Sound System/Sound Controller'                                                 }
    {'KeylessEntryArchitecture/FOB Locator System/FOB Locator Module'                                         }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Door Lock Controller'                                 }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Rear Pass Door Lock Sensor/Detect Door Lock Status'   }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Rear Driver Door Lock Sensor/Detect Door Lock Status' }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Front Pass Door Lock Sensor/Detect Door Lock Status'  }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Front Driver Door Lock Sensor/Detect Door Lock Status'}

Find all the base components in the system.

con2 = HasStereotype(IsStereotypeDerivedFrom("AutoProfile.BaseComponent"));
baseComps = model.find(con2)

baseComps = 18x1 cell
    {'KeylessEntryArchitecture/Sound System/Dashboard Speaker'                          }
    {'KeylessEntryArchitecture/Engine Control System/Start//Stop Button'                }
    {'KeylessEntryArchitecture/Engine Control System/Keyless Start Controller'          }
    {'KeylessEntryArchitecture/Lighting System/Lighting Controller'                     }
    {'KeylessEntryArchitecture/Sound System/Sound Controller'                           }
    {'KeylessEntryArchitecture/FOB Locator System/FOB Locator Module'                   }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Door Lock Controller'           }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Front Driver Door Lock Actuator'}
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Front Pass Door Lock Actuator'  }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Rear Driver Door Lock Actuator' }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Rear Pass Door Lock Actuator'   }
    {'KeylessEntryArchitecture/FOB Locator System/Center Receiver'                      }
    {'KeylessEntryArchitecture/FOB Locator System/Front Receiver'                       }
    {'KeylessEntryArchitecture/FOB Locator System/Rear Receiver'                        }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Front Driver Door Lock Sensor'  }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Front Pass Door Lock Sensor'    }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Rear Driver Door Lock Sensor'   }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Rear Pass Door Lock Sensor'     }

Find all components using the interface KeyFOBPosition.

con3 = HasPort(HasInterface(Property("Name") == "KeyFOBPosition"));
con3_a = HasPort(Property("InterfaceName") == "KeyFOBPosition");
keyFOBPosComps = model.find(con3)

keyFOBPosComps = 10x1 cell
    {'KeylessEntryArchitecture/Door Lock//Unlock System'                      }
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Door Lock Controller' }
    {'KeylessEntryArchitecture/Engine Control System'                         }
    {'KeylessEntryArchitecture/Engine Control System/Keyless Start Controller'}
    {'KeylessEntryArchitecture/FOB Locator System'                            }
    {'KeylessEntryArchitecture/FOB Locator System/FOB Locator Module'         }
    {'KeylessEntryArchitecture/Lighting System'                               }
    {'KeylessEntryArchitecture/Lighting System/Lighting Controller'           }
    {'KeylessEntryArchitecture/Sound System'                                  }
    {'KeylessEntryArchitecture/Sound System/Sound Controller'                 }

Find all components whose WCET is less than or equal to 5 ms.

con4 = PropertyValue("AutoProfile.SoftwareComponent.WCET") <= 5;
model.find(con4)

ans = 1x1 cell array
    {'KeylessEntryArchitecture/Sound System/Sound Controller'}

% You can specify units for automatic unit conversion
con5 = PropertyValue("AutoProfile.SoftwareComponent.WCET") <= Value(5,'ms');
query1Comps = model.find(con5)

query1Comps = 3x1 cell
    {'KeylessEntryArchitecture/Lighting System/Lighting Controller'  }
    {'KeylessEntryArchitecture/Sound System/Sound Controller'        }
    {'KeylessEntryArchitecture/FOB Locator System/FOB Locator Module'}

Find all components whose WCET is greater than 1 ms or that have a cost greater than 10 USD.

con6 = PropertyValue("AutoProfile.SoftwareComponent.WCET") > Value(1,'ms') | PropertyValue("AutoProfile.Base.Cost") > Value(10,'USD');
query2Comps = model.find(con6)

query2Comps = 2x1 cell
    {'KeylessEntryArchitecture/Door Lock//Unlock System/Door Lock Controller' }
    {'KeylessEntryArchitecture/Engine Control System/Keyless Start Controller'}

Close the model.

model.close

More About

Definitions

Term	Definition	Application	More Information
view	A view shows a customizable subset of elements in a model. Views can be filtered based on stereotypes or names of components, ports, and interfaces, along with the name, type, or units of an interface element. Create views by adding elements manually. Views create a simplified way to work with complex architectures by focusing on certain parts of the architecture design.	You can use different types of views to represent the system: Operational views demonstrate how a system will be used and should be integrated with requirements analysis. Functional views focus on what the system must do to operate. Physical views show how the system is constructed and configured. A viewpoint represents a stakeholder perspective that specifies the contents of the view.	Modeling System Architecture of Keyless Entry System
element group	An element group is a grouping of components in a view.	Use element groups to programmatically populate a view.	Create Architecture Views Interactively Create Architectural Views Programmatically
query	A query is a specification that describes certain constraints or criteria to be satisfied by model elements.	Use queries to search elements with constraint criteria and to filter views.	Find Elements in Model Using Queries
component diagram	A component diagram represents a view with components, ports, and connectors based on how the model is structured.	Component diagrams allow you to programmatically or manually add and remove components from the view.	Inspect Components in Custom Architecture Views
hierarchy diagram	You can visualize a hierarchy diagram as a view with components, ports, reference types, component stereotypes, and stereotype properties.	There are two types of hierarchy diagrams: Component hierarchy diagrams display components in tree form with parents above children. In a component hierarchy view, each referenced model is represented as many times as it is used. Architecture hierarchy diagrams display unique component architecture types and their relationships using composition connections. In an architecture hierarchy view, each referenced model is represented only once.	Display Component Hierarchy and Architecture Hierarchy Using Views