org.eclipse.ocl.ecore
Interface OCL.Helper

All Superinterfaces:

OCLHelper<org.eclipse.emf.ecore.EClassifier,org.eclipse.emf.ecore.EOperation,org.eclipse.emf.ecore.EStructuralFeature,Constraint>

Enclosing class:

OCL

public static interface OCL.Helper
extends OCLHelper<org.eclipse.emf.ecore.EClassifier,org.eclipse.emf.ecore.EOperation,org.eclipse.emf.ecore.EStructuralFeature,Constraint>

Convenient interface aliasing the type parameter substitutions for the Ecore environment, for ease of typing.

Author:

Christian W. Damus (cdamus)

Method Summary

OCLExpression	createQuery(java.lang.String expression) Creates a query expression in the current classifier context.
OCL	getOCL() Obtains the OCL instance that created me.

Methods inherited from interface org.eclipse.ocl.helper.OCLHelper

createBodyCondition, createConstraint, createDerivedValueExpression, createInitialValueExpression, createInvariant, createPostcondition, createPrecondition, defineAttribute, defineOperation, getContextAttribute, getContextClassifier, getContextOperation, getEnvironment, getProblems, getSyntaxHelp, isValidating, setAttributeContext, setContext, setInstanceAttributeContext, setInstanceContext, setInstanceOperationContext, setOperationContext, setValidating

Method Detail

createQuery

OCLExpression createQuery(java.lang.String expression)
                          throws ParserException

Creates a query expression in the current classifier context. This may be specified, for example, as an expression value in the model.

The return type is narrowed to the Ecore binding for the generic OCLExpression<C> type.

Specified by:

createQuery in interface OCLHelper<org.eclipse.emf.ecore.EClassifier,org.eclipse.emf.ecore.EOperation,org.eclipse.emf.ecore.EStructuralFeature,Constraint>

Parameters:

expression - the expression (without any context declaration). This expression can have any result type; it needs not be a boolean

Returns:

the query expression

Throws:

ParserException - if the expression fails to parse

getOCL

OCL getOCL()

Obtains the OCL instance that created me. Note that many of the generic type parameter bindings will not be known, so clients should keep track of the OCL instance themselves where that is a problem.

The return type is narrowed to the Ecore binding for the generic OCLExpression<PK,C,O,P,EL,PM,S,COA,SSA,CT,CLS,E> type.

Specified by:

getOCL in interface OCLHelper<org.eclipse.emf.ecore.EClassifier,org.eclipse.emf.ecore.EOperation,org.eclipse.emf.ecore.EStructuralFeature,Constraint>

Returns:

the OCL instance that created me