/**
* Does the mapping, and Hibernate default semantics, specify that this association should be
* fetched by outer joining
*/
protected boolean isJoinedFetchEnabledInMapping(FetchMode config, AssociationType type)
throws MappingException {
if (!type.isEntityType() && !type.isCollectionType()) {
return false;
} else {
if (config == FetchMode.JOIN) return true;
if (config == FetchMode.SELECT) return false;
if (type.isEntityType()) {
// TODO: look at the owning property and check that it
// isn't lazy (by instrumentation)
EntityType entityType = (EntityType) type;
EntityPersister persister =
getFactory().getEntityPersister(entityType.getAssociatedEntityName());
return !persister.hasProxy();
} else {
return false;
}
}
}
/**
* Determine the appropriate associationType of join (if any) to use to fetch the given
* association.
*
* @param associationType The association associationType.
* @param config The metadata-defined fetch mode.
* @param path The path to the association
* @param lhsTable The owner table
* @param lhsColumns The owner join columns
* @param nullable Is the association nullable.
* @param currentDepth Current join depth
* @param cascadeStyle The metadata-defined cascade style.
* @return type of join to use ({@link org.hibernate.sql.JoinType#INNER_JOIN}, {@link
* org.hibernate.sql.JoinType#LEFT_OUTER_JOIN}, or -1 to indicate no joining.
* @throws MappingException ??
*/
protected JoinType getJoinType(
AssociationType associationType,
FetchMode config,
PropertyPath path,
String lhsTable,
String[] lhsColumns,
boolean nullable,
int currentDepth,
CascadeStyle cascadeStyle)
throws MappingException {
if (!isJoinedFetchEnabled(associationType, config, cascadeStyle)) {
return JoinType.NONE;
}
if (isTooDeep(currentDepth) || (associationType.isCollectionType() && isTooManyCollections())) {
return JoinType.NONE;
}
if (isDuplicateAssociation(lhsTable, lhsColumns, associationType)) {
return JoinType.NONE;
}
return getJoinType(nullable, currentDepth);
}
protected JoinType getJoinType(
OuterJoinLoadable persister,
final PropertyPath path,
int propertyNumber,
AssociationType associationType,
FetchMode metadataFetchMode,
CascadeStyle metadataCascadeStyle,
String lhsTable,
String[] lhsColumns,
final boolean nullable,
final int currentDepth)
throws MappingException {
final JoinType resolvedJoinType;
if (translator.isJoin(path.getFullPath())) {
resolvedJoinType = translator.getJoinType(path.getFullPath());
} else {
if (translator.hasProjection()) {
resolvedJoinType = JoinType.NONE;
} else {
FetchMode fetchMode = translator.getRootCriteria().getFetchMode(path.getFullPath());
if (isDefaultFetchMode(fetchMode)) {
if (persister != null) {
if (isJoinFetchEnabledByProfile(persister, path, propertyNumber)) {
if (isDuplicateAssociation(lhsTable, lhsColumns, associationType)) {
resolvedJoinType = JoinType.NONE;
} else if (isTooDeep(currentDepth)
|| (associationType.isCollectionType() && isTooManyCollections())) {
resolvedJoinType = JoinType.NONE;
} else {
resolvedJoinType = getJoinType(nullable, currentDepth);
}
} else {
resolvedJoinType =
super.getJoinType(
persister,
path,
propertyNumber,
associationType,
metadataFetchMode,
metadataCascadeStyle,
lhsTable,
lhsColumns,
nullable,
currentDepth);
}
} else {
resolvedJoinType =
super.getJoinType(
associationType,
metadataFetchMode,
path,
lhsTable,
lhsColumns,
nullable,
currentDepth,
metadataCascadeStyle);
}
} else {
if (fetchMode == FetchMode.JOIN) {
isDuplicateAssociation(
lhsTable, lhsColumns, associationType); // deliberately ignore return value!
resolvedJoinType = getJoinType(nullable, currentDepth);
} else {
resolvedJoinType = JoinType.NONE;
}
}
}
}
return resolvedJoinType;
}
// $Id: CascadeEntityJoinWalker.java,v 1.1 2005/07/26 05:51:47 oneovthafew Exp $
public boolean isCollection() {
return joinableType.isCollectionType();
}