if ( fetch && isSubQuery() ) {
throw new QueryException( "fetch not allowed in subquery from-elements" );
}
// The path AST should be a DotNode, and it should have been evaluated already.
if ( path.getType() != SqlTokenTypes.DOT ) {
throw new SemanticException( "Path expected for join!" );
}
DotNode dot = (DotNode) path;
JoinType hibernateJoinType = JoinProcessor.toHibernateJoinType( joinType );
dot.setJoinType( hibernateJoinType ); // Tell the dot node about the join type.
dot.setFetch( fetch );
// Generate an explicit join for the root dot node. The implied joins will be collected and passed up
// to the root dot node.
dot.resolve( true, false, alias == null ? null : alias.getText() );
final FromElement fromElement;
if ( dot.getDataType() != null && dot.getDataType().isComponentType() ) {
if ( dot.getDataType().isAnyType() ) {
throw new SemanticException( "An AnyType attribute cannot be join fetched" );
// ^^ because the discriminator (aka, the "meta columns") must be known to the SQL in
// a non-parameterized way.
}
FromElementFactory factory = new FromElementFactory(
getCurrentFromClause(),
dot.getLhs().getFromElement(),
dot.getPropertyPath(),
alias == null ? null : alias.getText(),
null,
false
);
fromElement = factory.createComponentJoin( (ComponentType) dot.getDataType() );
}
else {
fromElement = dot.getImpliedJoin();
fromElement.setAllPropertyFetch( propertyFetch != null );
if ( with != null ) {
if ( fetch ) {
throw new SemanticException( "with-clause not allowed on fetched associations; use filters" );
}
handleWithFragment( fromElement, with );
}
}