/**
* This method retrieves the value from the feature at the given index. It retrieves the value
* either from the views's store or the internal pre-registration Map.
*
* @param feature the feature to retrieve the value from
* @param index the given index of the object in the feature
* @return the value from the feature at the given index
*/
private Object getValueFromRevision(EStructuralFeature feature, int index) {
InternalCDORevision revision = cdoRevision();
Object object = revision.get(feature, index);
if (object == null) {
return null;
}
if (object instanceof CDOElementProxy) {
// Resolve proxy
CDOElementProxy proxy = (CDOElementProxy) object;
object =
viewAndState
.view
.getSession()
.resolveElementProxy(revision, feature, index, proxy.getIndex());
}
if (object instanceof CDOLegacyWrapper) {
return ((CDOLegacyWrapper) object).cdoInternalInstance();
}
CDOType type = CDOModelUtil.getType(feature.getEType());
object = viewAndState.view.getStore().convertToEMF(instance, revision, feature, index, object);
if (type == CDOType.OBJECT) {
if (object instanceof CDOID) {
CDOID id = (CDOID) object;
if (id.isNull()) {
return null;
}
object = getRegisteredWrapper(id);
if (object != null) {
return ((CDOLegacyWrapper) object).cdoInternalInstance();
}
if (id.isExternal()) {
object =
viewAndState
.view
.getResourceSet()
.getEObject(URI.createURI(id.toURIFragment()), true);
} else {
object = viewAndState.view.getObject(id);
}
if (object instanceof CDOObjectWrapper) {
return ((CDOObjectWrapper) object).cdoInternalInstance();
}
}
}
return object;
}
/** @since 4.0 */
protected void writeSystemValues(CDODataOutput out) throws IOException {
EClass eClass = getEClass();
CDOClassifierRef classRef = new CDOClassifierRef(eClass);
if (TRACER.isEnabled()) {
TRACER.format(
"Writing revision: ID={0}, className={1}, version={2}, branchPoint={3}, revised={4}, resource={5}, container={6}, featureID={7}", //$NON-NLS-1$
id,
eClass.getName(),
getVersion(),
branchPoint,
revised,
resourceID,
containerID,
containingFeatureID);
}
out.writeCDOClassifierRef(classRef);
out.writeCDOID(id);
out.writeCDOBranchPoint(branchPoint);
out.writeInt(getVersion());
if (!id.isTemporary()) {
out.writeLong(revised);
}
out.writeCDOID(resourceID);
out.writeCDOID(out.getIDProvider().provideCDOID(containerID));
out.writeInt(containingFeatureID);
}
/** @since 4.0 */
protected void readSystemValues(CDODataInput in) throws IOException {
EClassifier classifier = in.readCDOClassifierRefAndResolve();
initClassInfo((EClass) classifier);
id = in.readCDOID();
branchPoint = in.readCDOBranchPoint();
version = in.readInt();
if (!id.isTemporary()) {
revised = in.readLong();
}
resourceID = in.readCDOID();
containerID = in.readCDOID();
containingFeatureID = in.readInt();
if (TRACER.isEnabled()) {
TRACER.format(
"Reading revision: ID={0}, className={1}, version={2}, branchPoint={3}, revised={4}, resource={5}, container={6}, featureID={7}", //$NON-NLS-1$
id,
getEClass().getName(),
version,
branchPoint,
revised,
resourceID,
containerID,
containingFeatureID);
}
}
/**
* @param feature in case that a proxy has to be created the feature that will determine the
* interface type of the proxy and that will be used later to resolve the proxy. <code>null
* </code> indicates that proxy creation will be avoided!
*/
protected InternalEObject getEObjectFromPotentialID(
InternalCDOView view, EStructuralFeature feature, Object potentialID) {
CDOLegacyWrapper wrapper;
if (potentialID instanceof CDOID
&& (wrapper = getRegisteredWrapper((CDOID) potentialID)) != null) {
potentialID = wrapper.instance;
if (TRACER.isEnabled()) {
TRACER.format(
"Getting Object ("
+ potentialID
+ ") from localThread instead of the view"); //$NON-NLS-1$ //$NON-NLS-2$
}
} else {
if (potentialID instanceof CDOID) {
CDOID id = (CDOID) potentialID;
if (id.isNull()) {
return null;
}
if (id.isExternal()) {
URI uri = URI.createURI(id.toURIFragment());
InternalEObject eObject =
(InternalEObject) viewAndState.view.getResourceSet().getEObject(uri, true);
return eObject;
}
boolean loadOnDemand = feature == null;
potentialID = viewAndState.view.getObject(id, loadOnDemand);
if (potentialID == null && !loadOnDemand) {
return createProxy(view, feature, id);
}
}
if (potentialID instanceof InternalCDOObject) {
return ((InternalCDOObject) potentialID).cdoInternalInstance();
}
}
return (InternalEObject) potentialID;
}
public static Object remapID(
Object value, Map<CDOID, CDOID> idMappings, boolean allowUnmappedTempIDs) {
if (value instanceof CDOID) {
CDOID oldID = (CDOID) value;
if (!oldID.isNull()) {
CDOID newID = idMappings.get(oldID);
if (newID != null) {
if (TRACER.isEnabled()) {
TRACER.format("Adjusting ID: {0} --> {1}", oldID, newID);
}
return newID;
}
if (oldID instanceof CDOIDTemp) {
throw new IllegalStateException(
MessageFormat.format(Messages.getString("AbstractCDORevision.2"), oldID));
}
}
}
return value;
}
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if (method.equals(getIDMethod)) {
return id;
}
if (method.equals(eIsProxyMethod)) {
return true;
}
if (method.equals(eProxyURIMethod)) {
// Use container's resource because it's guaranteed to be in the same CDOView as the
// resource of the target!
Resource resource = wrapper.eResource();
// TODO Consider using a "fake" Resource implementation. See Resource.getEObject(...)
return resource.getURI().appendFragment(id.toURIFragment());
}
// A client must have invoked the proxy while being told not to do so!
throw new UnsupportedOperationException(method.getName());
}
protected ooId getOidFromCDOID(CDOID id) {
ooId oid = null;
// if (OBJYCDOIDUtil.isValidObjyId(id))
// oid = OBJYCDOIDUtil.getooId(id);
if (id.isTemporary()) {
// see if we've seen it before
CDOID nearId = idMapper.get(id);
if (nearId != null) {
oid = OBJYCDOIDUtil.getooId(nearId);
} else {
// create that object since it wasn't created and mapped yet.
InternalCDORevision containerRevision = newObjectsMap.get(id);
if (containerRevision != null) {
oid = createObjectAndAddToMapping(containerRevision).ooId();
}
}
} else {
oid = OBJYCDOIDUtil.getooId(id);
}
return oid;
}
@Override
protected int doCompareTo(CDOID o) throws ClassCastException {
// conversion to uri fragment is pretty heavy but afaics the compareTo
// is not used in a critical place.
return toURIFragment().compareTo(o.toURIFragment());
}
@Override
public int hashCode() {
return id.hashCode() ^ branch.hashCode();
}
