Package org.eclipse.emf.ocl.parser

Definition of the extensible environment API for OCL parsing and evaluation.

See:
          Description

Interface Summary
Environment Deprecated. Use the Environment interface, instead.
EnvironmentFactory Deprecated. Use the EnvironmentFactory interface, instead.
EvaluationEnvironment Deprecated. Use the EvaluationEnvironment interface, instead.
PersistentEnvironment Deprecated. Use the Environment interface, instead.
TypeResolver Deprecated. Use the TypeResolver interface with the Environment, instead.
 

Class Summary
AbstractEnvironmentFactory Deprecated. Use the AbstractEnvironmentFactory class, instead.
EcoreEnvironment Deprecated. Use the EcoreEnvironment class, instead.
EcoreEnvironmentFactory Deprecated. Use the EcoreEnvironmentFactory class, instead.
TypeResolverImpl Deprecated. Use the AbstractTypeResolver class, instead, with the AbstractEnvironment.
 

Exception Summary
ParserException Deprecated. Use the ParserException type, instead.
SemanticException Deprecated. Use the SemanticException interface, instead.
 

Package org.eclipse.emf.ocl.parser Description

Definition of the extensible environment API for OCL parsing and evaluation.

Package Specification

This package defines the API for the environments in which OCL expressions are parsed and evaluated.

The Environment interface describes the environment in which an OCL expression is parsed. The environment provides two major functions to the parser:

Environments are created by environment factories. An EnvironmentFactory is provided to an IOCLHelper to create environments when it needs to, or by clients to create environments for working with the ExpressionsUtil utilities. Environment factories are useful for adapting metamodels to Ecore (possibly using the extensions in the org.eclipse.emf.ocl.uml package) to use OCL on them. The environments that they create would do the language mapping to look up classifiers etc. as appropriate to the metamodel. A default factory implementation for Ecore is provided and may be extended by clients to support other metamodels.

While the Environment class provides a parse-time environment, the EvaluationEnvironment keeps track of the current values of variables in the evaluation of an OCL expression. The AbstractEnvironmentFactory provides a default implementation suitable for most applications. Factories that customize the parser environments may, however, need to customize the evaluation environment as well to perform transformations on the values that it maintains.

See Also:
org.eclipse.emf.ocl.helper, ExpressionsUtil, EnvironmentFactory, Environment

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