private Queryable determineAppropriateOwnerPersister(NonScalarReturn ownerDescriptor) {
String entityName = null;
if (ownerDescriptor instanceof RootReturn) {
entityName = ((RootReturn) ownerDescriptor).getEntityName();
} else if (ownerDescriptor instanceof CollectionReturn) {
CollectionReturn collRtn = (CollectionReturn) ownerDescriptor;
String role = collRtn.getOwnerEntityName() + "." + collRtn.getOwnerProperty();
CollectionPersister persister = getFactory().getCollectionPersister(role);
EntityType ownerType = (EntityType) persister.getElementType();
entityName = ownerType.getAssociatedEntityName(getFactory());
} else if (ownerDescriptor instanceof FetchReturn) {
FetchReturn fetchRtn = (FetchReturn) ownerDescriptor;
Queryable persister = determineAppropriateOwnerPersister(fetchRtn.getOwner());
Type ownerType = persister.getPropertyType(fetchRtn.getOwnerProperty());
if (ownerType.isEntityType()) {
entityName = ((EntityType) ownerType).getAssociatedEntityName(getFactory());
} else if (ownerType.isCollectionType()) {
Type ownerCollectionElementType = ((CollectionType) ownerType).getElementType(getFactory());
if (ownerCollectionElementType.isEntityType()) {
entityName =
((EntityType) ownerCollectionElementType).getAssociatedEntityName(getFactory());
}
}
}
if (entityName == null) {
throw new HibernateException("Could not determine fetch owner : " + ownerDescriptor);
}
return (Queryable) getFactory().getEntityPersister(entityName);
}
public CustomLoader(CustomQuery customQuery, SessionFactoryImplementor factory) {
super(factory);
this.sql = customQuery.getSQL();
this.querySpaces.addAll(customQuery.getQuerySpaces());
this.namedParameterBindPoints = customQuery.getNamedParameterBindPoints();
List entityPersisters = new ArrayList();
List entityOwners = new ArrayList();
List entityAliases = new ArrayList();
List collectionPersisters = new ArrayList();
List collectionOwners = new ArrayList();
List collectionAliases = new ArrayList();
List lockModes = new ArrayList();
List resultColumnProcessors = new ArrayList();
List nonScalarReturnList = new ArrayList();
List resultTypes = new ArrayList();
List specifiedAliases = new ArrayList();
int returnableCounter = 0;
boolean hasScalars = false;
List includeInResultRowList = new ArrayList();
Iterator itr = customQuery.getCustomQueryReturns().iterator();
while (itr.hasNext()) {
final Return rtn = (Return) itr.next();
if (rtn instanceof ScalarReturn) {
ScalarReturn scalarRtn = (ScalarReturn) rtn;
resultTypes.add(scalarRtn.getType());
specifiedAliases.add(scalarRtn.getColumnAlias());
resultColumnProcessors.add(
new ScalarResultColumnProcessor(
StringHelper.unquote(scalarRtn.getColumnAlias(), factory.getDialect()),
scalarRtn.getType()));
includeInResultRowList.add(true);
hasScalars = true;
} else if (ConstructorReturn.class.isInstance(rtn)) {
final ConstructorReturn constructorReturn = (ConstructorReturn) rtn;
resultTypes.add(null); // this bit makes me nervous
includeInResultRowList.add(true);
hasScalars = true;
ScalarResultColumnProcessor[] scalarProcessors =
new ScalarResultColumnProcessor[constructorReturn.getScalars().length];
int i = 0;
for (ScalarReturn scalarReturn : constructorReturn.getScalars()) {
scalarProcessors[i++] =
new ScalarResultColumnProcessor(
StringHelper.unquote(scalarReturn.getColumnAlias(), factory.getDialect()),
scalarReturn.getType());
}
resultColumnProcessors.add(
new ConstructorResultColumnProcessor(
constructorReturn.getTargetClass(), scalarProcessors));
} else if (rtn instanceof RootReturn) {
RootReturn rootRtn = (RootReturn) rtn;
Queryable persister = (Queryable) factory.getEntityPersister(rootRtn.getEntityName());
entityPersisters.add(persister);
lockModes.add((rootRtn.getLockMode()));
resultColumnProcessors.add(new NonScalarResultColumnProcessor(returnableCounter++));
nonScalarReturnList.add(rtn);
entityOwners.add(-1);
resultTypes.add(persister.getType());
specifiedAliases.add(rootRtn.getAlias());
entityAliases.add(rootRtn.getEntityAliases());
ArrayHelper.addAll(querySpaces, persister.getQuerySpaces());
includeInResultRowList.add(true);
} else if (rtn instanceof CollectionReturn) {
CollectionReturn collRtn = (CollectionReturn) rtn;
String role = collRtn.getOwnerEntityName() + "." + collRtn.getOwnerProperty();
QueryableCollection persister = (QueryableCollection) factory.getCollectionPersister(role);
collectionPersisters.add(persister);
lockModes.add(collRtn.getLockMode());
resultColumnProcessors.add(new NonScalarResultColumnProcessor(returnableCounter++));
nonScalarReturnList.add(rtn);
collectionOwners.add(-1);
resultTypes.add(persister.getType());
specifiedAliases.add(collRtn.getAlias());
collectionAliases.add(collRtn.getCollectionAliases());
// determine if the collection elements are entities...
Type elementType = persister.getElementType();
if (elementType.isEntityType()) {
Queryable elementPersister =
(Queryable) ((EntityType) elementType).getAssociatedJoinable(factory);
entityPersisters.add(elementPersister);
entityOwners.add(-1);
entityAliases.add(collRtn.getElementEntityAliases());
ArrayHelper.addAll(querySpaces, elementPersister.getQuerySpaces());
}
includeInResultRowList.add(true);
} else if (rtn instanceof EntityFetchReturn) {
EntityFetchReturn fetchRtn = (EntityFetchReturn) rtn;
NonScalarReturn ownerDescriptor = fetchRtn.getOwner();
int ownerIndex = nonScalarReturnList.indexOf(ownerDescriptor);
entityOwners.add(ownerIndex);
lockModes.add(fetchRtn.getLockMode());
Queryable ownerPersister = determineAppropriateOwnerPersister(ownerDescriptor);
EntityType fetchedType =
(EntityType) ownerPersister.getPropertyType(fetchRtn.getOwnerProperty());
String entityName = fetchedType.getAssociatedEntityName(getFactory());
Queryable persister = (Queryable) factory.getEntityPersister(entityName);
entityPersisters.add(persister);
nonScalarReturnList.add(rtn);
specifiedAliases.add(fetchRtn.getAlias());
entityAliases.add(fetchRtn.getEntityAliases());
ArrayHelper.addAll(querySpaces, persister.getQuerySpaces());
includeInResultRowList.add(false);
} else if (rtn instanceof CollectionFetchReturn) {
CollectionFetchReturn fetchRtn = (CollectionFetchReturn) rtn;
NonScalarReturn ownerDescriptor = fetchRtn.getOwner();
int ownerIndex = nonScalarReturnList.indexOf(ownerDescriptor);
collectionOwners.add(ownerIndex);
lockModes.add(fetchRtn.getLockMode());
Queryable ownerPersister = determineAppropriateOwnerPersister(ownerDescriptor);
String role = ownerPersister.getEntityName() + '.' + fetchRtn.getOwnerProperty();
QueryableCollection persister = (QueryableCollection) factory.getCollectionPersister(role);
collectionPersisters.add(persister);
nonScalarReturnList.add(rtn);
specifiedAliases.add(fetchRtn.getAlias());
collectionAliases.add(fetchRtn.getCollectionAliases());
// determine if the collection elements are entities...
Type elementType = persister.getElementType();
if (elementType.isEntityType()) {
Queryable elementPersister =
(Queryable) ((EntityType) elementType).getAssociatedJoinable(factory);
entityPersisters.add(elementPersister);
entityOwners.add(ownerIndex);
entityAliases.add(fetchRtn.getElementEntityAliases());
ArrayHelper.addAll(querySpaces, elementPersister.getQuerySpaces());
}
includeInResultRowList.add(false);
} else {
throw new HibernateException(
"unexpected custom query return type : " + rtn.getClass().getName());
}
}
this.entityPersisters = new Queryable[entityPersisters.size()];
for (int i = 0; i < entityPersisters.size(); i++) {
this.entityPersisters[i] = (Queryable) entityPersisters.get(i);
}
this.entiytOwners = ArrayHelper.toIntArray(entityOwners);
this.entityAliases = new EntityAliases[entityAliases.size()];
for (int i = 0; i < entityAliases.size(); i++) {
this.entityAliases[i] = (EntityAliases) entityAliases.get(i);
}
this.collectionPersisters = new QueryableCollection[collectionPersisters.size()];
for (int i = 0; i < collectionPersisters.size(); i++) {
this.collectionPersisters[i] = (QueryableCollection) collectionPersisters.get(i);
}
this.collectionOwners = ArrayHelper.toIntArray(collectionOwners);
this.collectionAliases = new CollectionAliases[collectionAliases.size()];
for (int i = 0; i < collectionAliases.size(); i++) {
this.collectionAliases[i] = (CollectionAliases) collectionAliases.get(i);
}
this.lockModes = new LockMode[lockModes.size()];
for (int i = 0; i < lockModes.size(); i++) {
this.lockModes[i] = (LockMode) lockModes.get(i);
}
this.resultTypes = ArrayHelper.toTypeArray(resultTypes);
this.transformerAliases = ArrayHelper.toStringArray(specifiedAliases);
this.rowProcessor =
new ResultRowProcessor(
hasScalars,
(ResultColumnProcessor[])
resultColumnProcessors.toArray(
new ResultColumnProcessor[resultColumnProcessors.size()]));
this.includeInResultRow = ArrayHelper.toBooleanArray(includeInResultRowList);
}
