org.eclipse.ocl.uml
Class UMLEnvironment

java.lang.Object
  extended by org.eclipse.ocl.AbstractEnvironment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject>
      extended by org.eclipse.ocl.uml.UMLEnvironment
All Implemented Interfaces:
Environment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject>

public class UMLEnvironment
extends AbstractEnvironment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject>

Implementation of the Environment for parsing OCL expressions on UML models. The UMLEnvironment uses a client-supplied resource set to look up UML Packages in UML resources. It also uses an EPackage registry to find the corresponding Ecore definitions of packages when evaluating expressions on instances of the UML model (in the case of evaluation on UML2-generated API objects).


Nested Class Summary
 
Nested classes/interfaces inherited from class org.eclipse.ocl.AbstractEnvironment
AbstractEnvironment.VariableEntry
 
Nested classes/interfaces inherited from interface org.eclipse.ocl.Environment
Environment.Registry
 
Field Summary
 
Fields inherited from interface org.eclipse.ocl.Environment
OCL_NAMESPACE_URI, RESULT_VARIABLE_NAME, SELF_VARIABLE_NAME
 
Constructor Summary
protected UMLEnvironment(Environment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject> parent)
          Initializes me with a parent environment.
protected UMLEnvironment(EPackage.Registry registry, ResourceSet rset)
          Initializes me with a package registry for looking up the Ecore representations of UML packages and a resource set for looking up UML packages in UML resources.
protected UMLEnvironment(EPackage.Registry registry, ResourceSet rset, Resource resource)
          Initializes me with a package registry for looking up the Ecore representations of UML packages, a resource set for looking up UML packages in UML resources, and a resource from which to load myself.
 
Method Summary
protected  TypeResolver<Classifier,Operation,Property> createTypeResolver()
          Creates a new type resolver for use with this environment.
 Property defineAttribute(Classifier owner, Variable<Classifier,Parameter> variable, Constraint constraint)
          In processing an additional attribute definition, constructs the property and associates it with its definition constraint.
 Operation defineOperation(Classifier owner, String name, Classifier type, List<Variable<Classifier,Parameter>> params, Constraint constraint)
          In processing an additional operation definition, constructs the operation and associates it with its definition constraint.
 Constraint getDefinition(Object feature)
          Obtains the definition constraint of the specified feature, if it is an additional attribute or operation defined via an OCL constraint.
 EnvironmentFactory<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject> getFactory()
          Obtains the factory that created me, or an appropriate default factory if I was not created using a factory.
 OCLFactory getOCLFactory()
          Obtains a factory for the creation of types that are parameterized by model elements.
 OCLStandardLibrary<Classifier> getOCLStandardLibrary()
          Obtains the collection of core types representing the OCL Standard Library.
protected  ResourceSet getResourceSet()
          Obtains the resource set in which I look for UML packages when resolving package names.
 List<State> getStates(Classifier owner, List<String> pathPrefix)
          Retrieves a list of all possible states of the specified owner whose paths are prefixed by the specified partial name.
 TypeResolver<Classifier,Operation,Property> getTypeResolver()
          Obtains a type resolver to be used to create (and cache) concrete bindings for the generic OCL types, based on the user model types provided by this environment.
protected  Package getUMLMetamodel()
          Obtains the UML metamodel library, loaded in my resource set.
 UMLReflection<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint> getUMLReflection()
          Obtains a utility for for reflection on the UML metaclasses that are used by the OCL abstract syntax.
 boolean isInPostcondition(OCLExpression<Classifier> exp)
          Checks whether the specified OCL expression is in an operation postcondition constraint.
 Classifier lookupClassifier(List<String> names)
          Finds the classifier identified by the specified sequence of names (a qualified name).
 Package lookupPackage(List<String> path)
          Finds the package identified by the specified sequence of names (a qualified name). Implements the inherited specification by looking in my resource set for a resource containing the specified package.
 Property lookupProperty(Classifier owner, String name)
          Finds a property defined or inherited by the specified classifier.
protected  void setFactory(EnvironmentFactory<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject> factory)
          Sets the factory that created me.
 void setParent(Environment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject> env)
          Sets my parent environment.
 void undefine(Object feature)
          Removes the definition of an additional operation or property.
 
Methods inherited from class org.eclipse.ocl.AbstractEnvironment
addedVariable, addElement, addOperation, addProperty, deleteElement, getAdditionalAttributes, getAdditionalOperations, getBodyCondition, getContextClassifier, getContextOperation, getContextPackage, getContextProperty, getDeriveConstraint, getInitConstraint, getParent, getResource, getSelfVariable, getVariables, initialLower, isEmpty, lookup, lookupAssociationClassReference, lookupImplicitSourceForAssociationClass, lookupImplicitSourceForOperation, lookupImplicitSourceForProperty, lookupImplicitSourceForSignal, lookupImplicitSourceForState, lookupLocal, lookupOperation, lookupSignal, lookupState, removedVariable, setBodyCondition, setContextOperation, setContextPackage, setContextProperty, setDeriveConstraint, setInitConstraint, setParent, setSelfVariable
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

UMLEnvironment

protected UMLEnvironment(EPackage.Registry registry,
                         ResourceSet rset)
Initializes me with a package registry for looking up the Ecore representations of UML packages and a resource set for looking up UML packages in UML resources.

Parameters:
registry - the Ecore package registry to use
rset - the resource set to use

UMLEnvironment

protected UMLEnvironment(EPackage.Registry registry,
                         ResourceSet rset,
                         Resource resource)
Initializes me with a package registry for looking up the Ecore representations of UML packages, a resource set for looking up UML packages in UML resources, and a resource from which to load myself.

Parameters:
registry - the Ecore package registry to use
rset - the resource set to use
resource - my resource for persistence

UMLEnvironment

protected UMLEnvironment(Environment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject> parent)
Initializes me with a parent environment. I inherit my package registry, resource set, and resource from it.

Parameters:
parent - my parent environment
Method Detail

getFactory

public EnvironmentFactory<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject> getFactory()
Description copied from interface: Environment
Obtains the factory that created me, or an appropriate default factory if I was not created using a factory. This factory can be used to create nested environments within me.

Returns:
my originating factory
See Also:
EnvironmentFactory.createEnvironment(Environment)

setFactory

protected void setFactory(EnvironmentFactory<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject> factory)
Sets the factory that created me. This method should only be invoked by that factory.

Parameters:
factory - my originating factory

setParent

public void setParent(Environment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject> env)
Description copied from interface: Environment
Sets my parent environment. The parent environment should not generally be set to null if it was not already null.

Parameters:
env - my new parent environment

getOCLStandardLibrary

public OCLStandardLibrary<Classifier> getOCLStandardLibrary()
Description copied from interface: Environment
Obtains the collection of core types representing the OCL Standard Library. These are the singleton or generic instances of the OCL-defined classifiers such as OclAny, Collection(T), etc. Implementers of OCL metamodel bindings are encouraged to share a single instance of the standard library amonst all of the Environments constructed by a particular EnvironmentFactory.

Returns:
the OCL Standard Library implementation for this environment

getResourceSet

protected final ResourceSet getResourceSet()
Obtains the resource set in which I look for UML packages when resolving package names.

Returns:
my resource set

getUMLMetamodel

protected Package getUMLMetamodel()
Obtains the UML metamodel library, loaded in my resource set.

Returns:
the UML metamodel

getTypeResolver

public TypeResolver<Classifier,Operation,Property> getTypeResolver()
Description copied from interface: Environment
Obtains a type resolver to be used to create (and cache) concrete bindings for the generic OCL types, based on the user model types provided by this environment. These are the types that are parameterized by particular user model elements: collections of particular classifiers, meta-types for particular classifiers, message types for particular operations or signals, and tuple types.

Returns:
the type resolver

getOCLFactory

public OCLFactory getOCLFactory()
Description copied from interface: Environment
Obtains a factory for the creation of types that are parameterized by model elements. This type factory must create types that are instances of the metaclass describing classifiers in the client metamodel.

Returns:
the appropriate type factory

getUMLReflection

public UMLReflection<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint> getUMLReflection()
Description copied from interface: Environment
Obtains a utility for for reflection on the UML metaclasses that are used by the OCL abstract syntax.

Returns:
the appropriate reflection instance

createTypeResolver

protected TypeResolver<Classifier,Operation,Property> createTypeResolver()
Creates a new type resolver for use with this environment.

Returns:
a new type resolver

lookupPackage

public Package lookupPackage(List<String> path)
Finds the package identified by the specified sequence of names (a qualified name).

Implements the inherited specification by looking in my resource set for a resource containing the specified package.

Parameters:
path - the qualified name
Returns:
the matching package, or null if not found

lookupClassifier

public Classifier lookupClassifier(List<String> names)
Description copied from interface: Environment
Finds the classifier identified by the specified sequence of names (a qualified name).

Parameters:
names - the qualified name
Returns:
the matching classifier, or null if not found

lookupProperty

public Property lookupProperty(Classifier owner,
                               String name)
Description copied from interface: Environment
Finds a property defined or inherited by the specified classifier.

Specified by:
lookupProperty in interface Environment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject>
Overrides:
lookupProperty in class AbstractEnvironment<Package,Classifier,Operation,Property,EnumerationLiteral,Parameter,State,CallOperationAction,SendSignalAction,Constraint,Class,EObject>
Parameters:
owner - the owner of the property that we are looking for, or null to find an implicit owner type (in iteration expressions)
name - the property name
Returns:
the property, or null if it could not be found

getStates

public List<State> getStates(Classifier owner,
                             List<String> pathPrefix)
Description copied from interface: Environment
Retrieves a list of all possible states of the specified owner whose paths are prefixed by the specified partial name. If the owner is null, then the target of the oclIsInState() operation call is implicit and must be looked up in the usual way for implicit operation call targets. This method is used for content-assist.

Parameters:
owner - the classifier for which states are being sought. Can be null in the case of an oclIsInState() call on an implicit target
pathPrefix - partial path name of the states being sought. This can be empty to find the first level of state names
Returns:
the list of all possible states directly contained in the namespace indicated by the path prefix (i.e., only one level of state nesting)

defineAttribute

public Property defineAttribute(Classifier owner,
                                Variable<Classifier,Parameter> variable,
                                Constraint constraint)
Description copied from interface: Environment
In processing an additional attribute definition, constructs the property and associates it with its definition constraint. The operation definition is local to this environment.

Parameters:
owner - the context classifier of the property definition constraint
variable - the name and type of the property (conveniently encapsulated in a variable)
constraint - the definition constraint
Returns:
the defined property

defineOperation

public Operation defineOperation(Classifier owner,
                                 String name,
                                 Classifier type,
                                 List<Variable<Classifier,Parameter>> params,
                                 Constraint constraint)
Description copied from interface: Environment
In processing an additional operation definition, constructs the operation and associates it with its definition constraint. The operation definition is local to this environment.

Parameters:
owner - the context classifier of the property definition constraint
name - the operation name
params - the names and types of the parameters, if any (conveniently encapsulated in variables)
constraint - the definition constraint
Returns:
the defined operation

undefine

public void undefine(Object feature)
Description copied from interface: Environment
Removes the definition of an additional operation or property.

Parameters:
feature - an additional property or operation

getDefinition

public Constraint getDefinition(Object feature)
Description copied from interface: Environment
Obtains the definition constraint of the specified feature, if it is an additional attribute or operation defined via an OCL constraint.

Parameters:
feature - a property or operation
Returns:
the definition constraint that defines it, or null if this feature is not defined by OCL

isInPostcondition

public boolean isInPostcondition(OCLExpression<Classifier> exp)
Description copied from interface: Environment
Checks whether the specified OCL expression is in an operation postcondition constraint. This is used in validating the usage of constructs that are only valid in postconditions (e.g., oclIsNew()).

Parameters:
exp - an OCL expression
Returns:
true if it is in a postcondition constraint; false, otherwise (including case of no constraint at all)

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All Rights Reserved.