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

Fields

Modifier and Type	Field and Description
protected boolean	considerSubtypes
protected java.util.Collection<? extends EPackage>	ePackages

Constructor Summary

Constructors

Constructor and Description
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

Modifier and Type	Method and Description
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.