FromElement addFromElement() throws SemanticException {
FromClause parentFromClause = fromClause.getParentFromClause();
if (parentFromClause != null) {
// Look up class name using the first identifier in the path.
String pathAlias = PathHelper.getAlias(path);
FromElement parentFromElement = parentFromClause.getFromElement(pathAlias);
if (parentFromElement != null) {
return createFromElementInSubselect(path, pathAlias, parentFromElement, classAlias);
}
}
EntityPersister entityPersister =
fromClause.getSessionFactoryHelper().requireClassPersister(path);
FromElement elem =
createAndAddFromElement(
path,
classAlias,
entityPersister,
(EntityType) ((Queryable) entityPersister).getType(),
null);
// Add to the query spaces.
fromClause.getWalker().addQuerySpaces(entityPersister.getQuerySpaces());
return elem;
}
private FromElement evaluateFromElementPath(String path, String classAlias)
throws SemanticException {
ASTFactory factory = fromClause.getASTFactory();
FromReferenceNode pathNode = (FromReferenceNode) PathHelper.parsePath(path, factory);
pathNode.recursiveResolve(
FromReferenceNode.ROOT_LEVEL, // This is the root level node.
false, // Generate an explicit from clause at the root.
classAlias,
null);
if (pathNode.getImpliedJoin() != null) {
return pathNode.getImpliedJoin();
} else {
return pathNode.getFromElement();
}
}
