Examples with EClass org.eclipse.emf.ecore.EClass used on opensource projects

Example 31 with EClass

use of org.eclipse.emf.ecore.EClass in project xtext-core by eclipse.

the class LazyLinker method globalFindInstantiableCompatible.

protected EClass globalFindInstantiableCompatible(EClass eType) {
    Set<String> visitedPackages = Sets.newHashSet(eType.getEPackage().getNsURI());
    for (AbstractMetamodelDeclaration metamodel : GrammarUtil.allMetamodelDeclarations(grammarAccess.getGrammar())) {
        if (visitedPackages.add(metamodel.getEPackage().getNsURI())) {
            EClass result = findSubTypeInEPackage(metamodel.getEPackage(), eType);
            if (result != null)
                return result;
        }
    }
    log.warn("Traversing EPackage registry to find instantiable subtype for '" + eType.getName() + "'");
    log.warn("You may override LazyLinker#globalFindInstantiableCompatible(..) to prevent this.");
    for (String nsURI : getRegisteredNsUris()) {
        if (visitedPackages.add(nsURI)) {
            try {
                EClass result = findSubTypeInEPackage(getRegistry().getEPackage(nsURI), eType);
                if (result != null)
                    return result;
            } catch (WrappedException ex) {
                log.error("Error when loading EPackage '" + nsURI + "'");
                log.error("You may override LazyLinker#globalFindInstantiableCompatible(..) to prevent this.");
                log.error("Error when loading EPackage '" + nsURI + "'", ex);
            }
        }
    }
    throw new IllegalStateException("Could not find an instantiable subtype for type: '" + eType.getName() + "' (" + eType.getEPackage().getNsURI() + ").");
}

Example 32 with EClass

use of org.eclipse.emf.ecore.EClass in project xtext-core by eclipse.

the class LazyLinker method getProxyType.

/**
 * @since 2.7
 */
protected EClass getProxyType(EObject obj, EReference eRef) {
    EClass referenceType = ecoreGenericsUtil.getReferenceType(eRef, obj.eClass());
    EClass instantiableType = instantiableSubTypes.get(referenceType);
    return instantiableType;
}

Example 33 with EClass

use of org.eclipse.emf.ecore.EClass in project xtext-core by eclipse.

the class EcoreUtil2 method getCompatibleType.

/**
 * @since 2.1
 */
public static EClassifier getCompatibleType(EClassifier typeA, EClassifier typeB, EObject grammarContext) {
    if (typeA.equals(typeB))
        return typeA;
    if (typeA instanceof EDataType && typeB instanceof EDataType) {
        Class<?> instanceClassA = typeA.getInstanceClass();
        Class<?> instanceClassB = typeB.getInstanceClass();
        if (instanceClassA != null && instanceClassB != null) {
            if (instanceClassA.isAssignableFrom(instanceClassB))
                return typeA;
            if (instanceClassB.isAssignableFrom(instanceClassA))
                return typeB;
        }
    }
    // no common type for simple datatypes available
    if (!(typeA instanceof EClass && typeB instanceof EClass))
        return null;
    List<EClass> sortedCandidates = getSortedCommonCompatibleTypeCandidates((EClass) typeA, (EClass) typeB);
    for (EClass candidate : sortedCandidates) if (isCommonCompatibleType(candidate, sortedCandidates))
        return candidate;
    EClass result = GrammarUtil.findEObject(GrammarUtil.getGrammar(grammarContext));
    return result;
}

Example 34 with EClass

use of org.eclipse.emf.ecore.EClass in project xtext-core by eclipse.

the class EcoreUtil2 method toExternalForm.

/**
 * creates an external form of the given EReference. Use
 * {@link #getEReferenceFromExternalForm(org.eclipse.emf.ecore.EPackage.Registry, String)} to retrieve the
 * {@link EReference} back.
 */
public static String toExternalForm(EReference ref) {
    if (ref == null)
        return null;
    String result = exernalFormCache.get(ref);
    if (result == null) {
        EClass class1 = ref.getEContainingClass();
        if (// some references may be contained in an EAnnotation
        class1 == null)
            result = EcoreUtil.getURI(ref).toString();
        else {
            StringBuilder buff = new StringBuilder(class1.getEPackage().getNsURI());
            buff.append(delim).append(class1.getName());
            buff.append(delim).append(class1.getFeatureID(ref));
            result = buff.toString();
        }
        exernalFormCache.put(ref, result);
    }
    return result;
}

Example 35 with EClass

use of org.eclipse.emf.ecore.EClass in project xtext-core by eclipse.

the class EcoreUtil2 method getEReferenceFromExternalForm.

/**
 * looks up the EReference in the passed registry, given the external form. if registry == null this
 */
public static EReference getEReferenceFromExternalForm(EPackage.Registry registry, String externalForm) {
    if (externalForm == null)
        return null;
    List<String> split = Strings.split(externalForm, delim);
    if (split.size() != 3) {
        URI uri = URI.createURI(externalForm);
        URI packURI = uri.trimFragment();
        EPackage ePackage = registry.getEPackage(packURI.toString());
        if (ePackage == null)
            return null;
        EReference result = (EReference) ePackage.eResource().getEObject(uri.fragment());
        return result;
    }
    EPackage ePackage = registry.getEPackage(split.get(0));
    if (ePackage == null)
        return null;
    EClass clazz = (EClass) ePackage.getEClassifier(split.get(1));
    if (clazz == null)
        return null;
    return (EReference) clazz.getEStructuralFeature(Integer.valueOf(split.get(2)));
}