/**
* INTERNAL Return the descriptor which contains this query key, look in the inheritance hierarchy
* of rootDescriptor for the descriptor.
*/
public ClassDescriptor convertToCastDescriptor(
ClassDescriptor rootDescriptor, AbstractSession session) {
if (castClass == null || rootDescriptor == null || rootDescriptor.getJavaClass() == castClass) {
return rootDescriptor;
}
ClassDescriptor castDescriptor = session.getClassDescriptor(castClass);
if (castDescriptor == null) {
throw QueryException.couldNotFindCastDescriptor(castClass, getBaseExpression());
}
if (!castDescriptor.hasInheritance()) {
throw QueryException.castMustUseInheritance(getBaseExpression());
}
ClassDescriptor parentDescriptor = castDescriptor.getInheritancePolicy().getParentDescriptor();
while (parentDescriptor != null) {
if (parentDescriptor == rootDescriptor) {
return castDescriptor;
}
parentDescriptor = parentDescriptor.getInheritancePolicy().getParentDescriptor();
}
ClassDescriptor childDescriptor = rootDescriptor;
while (childDescriptor != null) {
if (childDescriptor == castDescriptor) {
return rootDescriptor;
}
childDescriptor = childDescriptor.getInheritancePolicy().getParentDescriptor();
}
throw QueryException.couldNotFindCastDescriptor(castClass, getBaseExpression());
}
/**
* INTERNAL - Return the descriptor which contains this query key, look in the inheritance
* hierarchy of rootDescriptor for the descriptor. Does not set the descriptor, only returns it.
*/
public ClassDescriptor convertToCastDescriptor(
ClassDescriptor rootDescriptor, AbstractSession session) {
isDowncast = Boolean.FALSE;
if (castClass == null || rootDescriptor == null || rootDescriptor.getJavaClass() == castClass) {
return rootDescriptor;
}
ClassDescriptor castDescriptor = session.getClassDescriptor(castClass);
if (castDescriptor == null) {
throw QueryException.couldNotFindCastDescriptor(castClass, getBaseExpression());
}
if (!castDescriptor.hasInheritance()) {
throw QueryException.castMustUseInheritance(getBaseExpression());
}
ClassDescriptor parentDescriptor = castDescriptor.getInheritancePolicy().getParentDescriptor();
while (parentDescriptor != null) {
if (parentDescriptor == rootDescriptor) {
isDowncast = Boolean.TRUE;
return castDescriptor;
}
parentDescriptor = parentDescriptor.getInheritancePolicy().getParentDescriptor();
}
// is there value casting an emp to person in a query?
ClassDescriptor childDescriptor = rootDescriptor;
while (childDescriptor != null) {
if (childDescriptor == castDescriptor) {
return rootDescriptor;
}
childDescriptor = childDescriptor.getInheritancePolicy().getParentDescriptor();
}
throw QueryException.couldNotFindCastDescriptor(castClass, getBaseExpression());
}
/**
* INTERNAL Return true if it uses a cast class and query is downcasting. It will look into
* inheritance hierarchy of the root descriptor.
*/
public boolean isDowncast(ClassDescriptor rootDescriptor, AbstractSession session) {
if (castClass == null) {
return false;
}
if (rootDescriptor.getJavaClass() == castClass) {
return false;
}
ClassDescriptor castDescriptor = session.getClassDescriptor(castClass);
if (castDescriptor == null) {
throw QueryException.couldNotFindCastDescriptor(castClass, getBaseExpression());
}
if (castDescriptor.getInheritancePolicy() == null) {
throw QueryException.castMustUseInheritance(getBaseExpression());
}
ClassDescriptor parentDescriptor = castDescriptor.getInheritancePolicy().getParentDescriptor();
while (parentDescriptor != null) {
if (parentDescriptor == rootDescriptor) {
return true;
}
parentDescriptor = parentDescriptor.getInheritancePolicy().getParentDescriptor();
}
throw QueryException.couldNotFindCastDescriptor(castClass, getBaseExpression());
}
/**
* INTERNAL: Create (if necessary) and populate a reference object that will be used during the
* mapping reference resolution phase after unmarshalling is complete.
*
* @param record
* @param xmlField
* @param object
* @param session
* @return
*/
public void buildReference(
UnmarshalRecord record, XMLField xmlField, Object object, AbstractSession session) {
ReferenceResolver resolver = ReferenceResolver.getInstance(session);
if (resolver == null) {
return;
}
Object srcObject = record.getCurrentObject();
Reference reference = resolver.getReference(this, srcObject);
// if reference is null, create a new instance and set it on the resolver
if (reference == null) {
reference = new Reference(this, srcObject, getReferenceClass(), new HashMap());
resolver.addReference(reference);
}
XMLField tgtFld = (XMLField) getSourceToTargetKeyFieldAssociations().get(xmlField);
String tgtXPath = tgtFld.getXPath();
Vector pks;
HashMap primaryKeyMap = reference.getPrimaryKeyMap();
if (primaryKeyMap.containsKey(tgtXPath)) {
pks = (Vector) primaryKeyMap.get(tgtXPath);
} else {
pks = new Vector();
primaryKeyMap.put(tgtXPath, pks);
}
ClassDescriptor descriptor = session.getClassDescriptor(getReferenceClass());
Class type = descriptor.getTypedField(tgtFld).getType();
XMLConversionManager xmlConversionManager =
(XMLConversionManager) session.getDatasourcePlatform().getConversionManager();
for (StringTokenizer stok = new StringTokenizer((String) object); stok.hasMoreTokens(); ) {
Object value = xmlConversionManager.convertObject(stok.nextToken(), type);
if (value != null) {
pks.add(value);
}
}
}
