org.eclipse.viatra.query.runtime.base.comprehension

Class EMFVisitor

java.lang.Object

org.eclipse.viatra.query.runtime.base.comprehension.EMFVisitor

Direct Known Subclasses:

DerivedFeatureAdapter.DerivedFeatureEMFVisitor

public class EMFVisitor
extends java.lang.Object

Use EMFModelComprehension to visit an EMF model.

Constructor Summary

Constructors

Constructor and Description
EMFVisitor(boolean preOrder)

Method Summary

Modifier and Type	Method and Description
boolean	attemptProxyResolutions(org.eclipse.emf.ecore.EObject source, org.eclipse.emf.ecore.EReference feature) Whether the given reference of the given object should be resolved when it is a proxy
boolean	avoidTransientContainmentLink(org.eclipse.emf.ecore.EObject source, org.eclipse.emf.ecore.EReference reference, org.eclipse.emf.ecore.EObject targetObject) An opportunity for the visitor to indicate that the containment link is considered in a transient state, and the model comprehension should avoid following it.
boolean	preOrder()
boolean	pruneFeature(org.eclipse.emf.ecore.EStructuralFeature feature) Returns true if the given feature should not be traversed (interesting esp.
boolean	pruneSubtrees(org.eclipse.emf.ecore.EObject source) Returns true if the contents of an object should be pruned (and not explored by the visitor)
boolean	pruneSubtrees(org.eclipse.emf.ecore.resource.Resource source) Returns true if the contents of a resource should be pruned (and not explored by the visitor)
void	visitAttribute(org.eclipse.emf.ecore.EObject source, org.eclipse.emf.ecore.EAttribute feature, java.lang.Object target)
void	visitElement(org.eclipse.emf.ecore.EObject source)
void	visitInternalContainment(org.eclipse.emf.ecore.EObject source, org.eclipse.emf.ecore.EReference feature, org.eclipse.emf.ecore.EObject target)
void	visitNonContainmentReference(org.eclipse.emf.ecore.EObject source, org.eclipse.emf.ecore.EReference feature, org.eclipse.emf.ecore.EObject target)
void	visitProxyReference(org.eclipse.emf.ecore.EObject source, org.eclipse.emf.ecore.EReference reference, org.eclipse.emf.ecore.EObject targetObject, java.lang.Integer position) Called after visiting the reference, if the target is a proxy.
void	visitResource(org.eclipse.emf.ecore.resource.Resource resource)
void	visitTopElementInResource(org.eclipse.emf.ecore.resource.Resource resource, org.eclipse.emf.ecore.EObject element)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EMFVisitor

public EMFVisitor(boolean preOrder)

Method Detail

visitTopElementInResource

public void visitTopElementInResource(org.eclipse.emf.ecore.resource.Resource resource,
                                      org.eclipse.emf.ecore.EObject element)

Parameters:

resource -

element -

visitResource

public void visitResource(org.eclipse.emf.ecore.resource.Resource resource)

Parameters:

resource -

visitElement

public void visitElement(org.eclipse.emf.ecore.EObject source)

Parameters:

source -

visitNonContainmentReference

public void visitNonContainmentReference(org.eclipse.emf.ecore.EObject source,
                                         org.eclipse.emf.ecore.EReference feature,
                                         org.eclipse.emf.ecore.EObject target)

Parameters:

source -

feature -

target -

visitInternalContainment

public void visitInternalContainment(org.eclipse.emf.ecore.EObject source,
                                     org.eclipse.emf.ecore.EReference feature,
                                     org.eclipse.emf.ecore.EObject target)

Parameters:

source -

feature -

target -

visitAttribute

public void visitAttribute(org.eclipse.emf.ecore.EObject source,
                           org.eclipse.emf.ecore.EAttribute feature,
                           java.lang.Object target)

Parameters:

source -

feature -

target -

pruneFeature

public boolean pruneFeature(org.eclipse.emf.ecore.EStructuralFeature feature)

Returns true if the given feature should not be traversed (interesting esp. if multi-valued)

pruneSubtrees

public boolean pruneSubtrees(org.eclipse.emf.ecore.EObject source)

Returns true if the contents of an object should be pruned (and not explored by the visitor)

pruneSubtrees

public boolean pruneSubtrees(org.eclipse.emf.ecore.resource.Resource source)

Returns true if the contents of a resource should be pruned (and not explored by the visitor)

avoidTransientContainmentLink

public boolean avoidTransientContainmentLink(org.eclipse.emf.ecore.EObject source,
                                             org.eclipse.emf.ecore.EReference reference,
                                             org.eclipse.emf.ecore.EObject targetObject)

An opportunity for the visitor to indicate that the containment link is considered in a transient state, and the model comprehension should avoid following it. A containment is in a transient state from the point of view of the visitor if it connects a subtree that is being inserted during a full-model traversal, and a separate notification handler will deal with it later.

preOrder

public boolean preOrder()

Returns:

if objects should be visited before their outgoing edges

visitProxyReference

public void visitProxyReference(org.eclipse.emf.ecore.EObject source,
                                org.eclipse.emf.ecore.EReference reference,
                                org.eclipse.emf.ecore.EObject targetObject,
                                java.lang.Integer position)

Called after visiting the reference, if the target is a proxy.

Parameters:

position - optional: known position in multivalued collection (for more efficient proxy resolution)

attemptProxyResolutions

public boolean attemptProxyResolutions(org.eclipse.emf.ecore.EObject source,
                                       org.eclipse.emf.ecore.EReference feature)

Whether the given reference of the given object should be resolved when it is a proxy