org.eclipse.emf.ecore.xmi.impl
Class ElementHandlerImpl

java.lang.Object
  org.eclipse.emf.ecore.xmi.impl.ElementHandlerImpl

All Implemented Interfaces:

XMLResource.ElementHandler

public class ElementHandlerImpl
extends java.lang.Object
implements XMLResource.ElementHandler

An implementation of an element handler that includes support for searching for features in a specified collection of packages as well as optional support for searching for substitution group features for super types of the specified type.

See Also:

XMLResource.OPTION_ELEMENT_HANDLER

Field Summary

protected boolean	considerSubtypes
protected java.util.Collection<? extends EPackage>	ePackages

Constructor Summary

ElementHandlerImpl(boolean considerSubtypes)
Creates a default instances.

ElementHandlerImpl(boolean considerSubtypes, java.util.Collection<? extends EPackage> ePackages)
Creates an instance that will search the given packages for candidate features.

Method Summary

EStructuralFeature	getRoot(ExtendedMetaData extendedMetaData, EClassifier eClassifier) Returns an appropriate feature for serializing a value of the give type.
protected EStructuralFeature	getSubstitutionGroup(ExtendedMetaData extendedMetaData, EPackage ePackage, EClass eContainingClass, EStructuralFeature eStructuralFeature, EClassifier eClassifier) Searches the document root object package for a changeable (non-abstract) element that is affiliated with the given feature in the given class and a classifier that exactly matches the given classifier
EStructuralFeature	getSubstitutionGroup(ExtendedMetaData extendedMetaData, EStructuralFeature eStructuralFeature, EClassifier eClassifier) Returns an feature, related by substitution group affiliation to the given feature, for serializing a value of the give type.
protected EClassifier	getSuperType(ExtendedMetaData extendedMetaData, EClassifier eClassifier) Returns the base type or first super type of the classifier, depending on there it is a data type or a class.

Methods inherited from class java.lang.Object

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

Field Detail

considerSubtypes

protected boolean considerSubtypes

ePackages

protected java.util.Collection<? extends EPackage> ePackages

Constructor Detail

ElementHandlerImpl

public ElementHandlerImpl(boolean considerSubtypes)

Creates a default instances.

Parameters:

considerSubtypes - whether to consider base types or super types when finding a substitution group.

ElementHandlerImpl

public ElementHandlerImpl(boolean considerSubtypes,
                          java.util.Collection<? extends EPackage> ePackages)

Creates an instance that will search the given packages for candidate features.

Parameters:

considerSubtypes - whether to consider base types or super types when finding a substitution group.

ePackages - the packages to search for candidates.

Method Detail

getRoot

public EStructuralFeature getRoot(ExtendedMetaData extendedMetaData,
                                  EClassifier eClassifier)

Description copied from interface: XMLResource.ElementHandler

Returns an appropriate feature for serializing a value of the give type.

Specified by:

getRoot in interface XMLResource.ElementHandler

Parameters:

extendedMetaData - the extended meta data in which to look up type information.

eClassifier - the type of value to serialize.

Returns:

an appropriate feature for serializing a value of the give type or null.

getSuperType

protected EClassifier getSuperType(ExtendedMetaData extendedMetaData,
                                   EClassifier eClassifier)

Returns the base type or first super type of the classifier, depending on there it is a data type or a class.

Parameters:

extendedMetaData - the extended meta data in which to look up type information.

eClassifier - the classifier in question.

Returns:

the base type, the first super type of the classifier, or null.

getSubstitutionGroup

public EStructuralFeature getSubstitutionGroup(ExtendedMetaData extendedMetaData,
                                               EStructuralFeature eStructuralFeature,
                                               EClassifier eClassifier)

Description copied from interface: XMLResource.ElementHandler

Returns an feature, related by substitution group affiliation to the given feature, for serializing a value of the give type.

Specified by:

getSubstitutionGroup in interface XMLResource.ElementHandler

Parameters:

extendedMetaData - the extended meta data in which to look up type information.

eStructuralFeature - the feature that will be used if this method returns null.

eClassifier - the type of value to serialize.

Returns:

an appropriate feature for serializing a value of the give type or null.

getSubstitutionGroup

protected EStructuralFeature getSubstitutionGroup(ExtendedMetaData extendedMetaData,
                                                  EPackage ePackage,
                                                  EClass eContainingClass,
                                                  EStructuralFeature eStructuralFeature,
                                                  EClassifier eClassifier)

Searches the document root object package for a changeable (non-abstract) element that is affiliated with the given feature in the given class and a classifier that exactly matches the given classifier

Parameters:

extendedMetaData - the extended meta data in which to look up type information.

ePackage - the package whose document root to search.

eContainingClass - the containing class of the feature.

eStructuralFeature - the target feature.

eClassifier - the type of object being matched.

Returns:

the substitution group feature or null.