2020年3月21日 · OCL is a general-purpose (textual) formal language adopted as a standard by the OMG (see the current version of the OCL specification [20]) used to define several kinds of expressions that complement the information of (UML) models. OCL is a typed, declarative and side-effect free specification language. Typed means that each OCL expression ...

2020年5月16日 · 对象约束语言（OCL）在建模社区中被广泛用于补充软件模型，以精确定义系统中的约束和业务规则。支持OCL约束的定义和解释工具数量有限，特别是针对基于Python的建模方法。 本文介绍了一个基于Python的OCL解释器。该...

The Object Constraint Language is a precise text language that provides constraint and object query expressions on any MOF model or meta-model that cannot otherwise be expressed by diagrammatic notation.

OCL is a general-purpose (textual) formal3 language adopted as a standard by the OMG (see the current version of the OCL specification [20]) used to define several kinds of expressions that complement the information of (UML) models. OCL is a typed, declarative and side-effect free specification language. Typed

2022年11月6日 · OCL(Output Condensert Less)电路，称为无输出电容功放电路，是在OTL电路的基础上发展 起来的。OCL电路的主要特点有：采用双电源供电方式，输出端直流电位为零；由于没有输 出电容，低频

What is OCL? • OCL is – a textual language to describe constraints – the constraint language used in UML models • As well as the UML meta-model • OCL expressions are always bound to a UML model – OCL expressions can be bound to any model element in UML

The Object Constraint Language (OCL) is an expression language that describes constraints on object-oriented languages and other modeling artifacts. A constraint can be seen as a restriction on a model or a system. OCL is part of Unified Modeling Language (UML) and it plays an important role in the analysis phase of the software lifecycle.

The Object Constraint Language (OCL) started as a complement of the UML notation with the goal to overcome the limitations of UML (and in general, any graphical notation) in terms of precisely specifying detailed aspects of a system design. Since then, OCL has become...

A OCL expression refers to the following constituents: Values of basic types: Integer , Real , Boolean , String , UnlimitedNatural ; Modeling elements, from the associated UML model;

2019年1月1日 · OCL is a standard language defined by OMG for specifying constraints on models. OCL can be used to write constraints at various modeling levels defined in OMG's Meta-Object Facility (MOF), including the meta-model level and model level.