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Data about teachers, students, courses and classes are provided by University Data System (UDS). MagicTest calculates test assessment evaluations. Students participate in test assessments by providing answers to test questions. A test author also specifies test title, instructions, and allowed time. Teachers define tests for particular classes that they are running. An open question defines an expected correct answer. A closed question defines an ordered set of answer options, where at least one answer option is correct and at least one is incorrect. Each question must be applicable for 1 or more courses. An university needs a system MagicTest, which automates test assessments. Active Validation Suite Validation rules that are collected in a validation suite either by nesting or element import relationship are invoked by user This is a typical case for model completeness validation Validation suite is re-initialized on every invocation Validation rules that are collected in an active validation suite are invoked automatically when user changes the model This is a typical case for model correctness validation It is implemented in an intelligent way so that they fire only when relevant changes in model are performed For better performance, it is recommended to specify them in Java Active validation suite is initialized at project load time 7ĩ A Case Study for Various Validation Rule Examples 1.
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Magicdraw uml manuals#
Darius Šilingas Principal MagicDraw UML No Magic EuropeĢ About MagicDraw UML A visual UML modeling editor Domain-specific language (DSL) engine Roundtrip code engineering g for Java, C++, C#, Modeling teamwork control system Model documentation and report generation tool A modeling environment and model repository for Enterprise Architecture and Model-Driven Architecture paradigm Model validation engine using Dresden OCL Toolkit Developed since 1998 second oldest UML tool in the market! Sold in >70 countries, used in different business domains Widely regarded as the most standard-compliant UML tool 2ģ Disclaimer I use term model validation because it is used in MagicDraw user interface and documentation manuals In precise computer science terminology, I will discuss model verification since it is based on precisely defined rules Validate Verify 3Ĥ Model Validation: Correctness and Completeness Modeling like programming is an error-prone process A user model can be either incorrect (it breaks some rules) orincomplete (it lacks some required information) Rules defined in UML specification are automated in MagicDraw However, a specific modeling method typically implies additional rules Restriction to single generalization for classes Compulsory role names on navigable association ends Each use case must be documented with owned comment MagicDraw provides a way to define validation rules and validate models Validation rules can be specified on OCL 2.0 or Java 4ĥ MagicDraw Validation Profile > Validation Profile A special validation suite that is always active in the background Provides grouping for related validation rules so that they can be invoked together > validationsuite > validationrule abbreviation : String errormessage : String severity : SeverityKind = error implementation : String > activevalidationsuite > SeverityKind debug info warning error fatal Provides rule specification, against which model must to be checked Defines validation error significance levels 5Ħ Validation Rule Properties > Constraint constrainedelement : Element specification : ValueSpecification Defines meta-class, class or stereotype for which rule is applied Defines invariant specification in OCL 2 > validationrule abbreviation : String errormessage : String severity : SeverityKind = error implementation : String Attributes for displaying and filtering validation errors A special attribute for indicating operation or class in case the rule is specified in Java 6ħ Validation Suite vs. 1 Applying OCL for Model Validation in MagicDraw UML Dr.