When using bytecode enhancement with a ManyToOne relation and a Lazy Group, 2 queries are executed instead of one.

Code omitted for brevity

@Entity
public class BugLazyGrp {

	@LazyGroup(value = "bugLazyGrp_refmany1")
	@LazyToOne(value = LazyToOneOption.NO_PROXY)
	@ManyToOne(fetch=FetchType.LAZY, optional = false)
	@JoinColumn(name = "REF_MANY_1ID")
	private RefMany1 refMany1;
	
	@LazyGroup(value = "bugLazyGrp_refmany2")
	@LazyToOne(value = LazyToOneOption.NO_PROXY)
	@ManyToOne(fetch=FetchType.LAZY)
	@JoinColumn(name = "REF_MANY_2ID")
	private RefMany2 refMany2;
	
	@LazyGroup(value = "bugLazyGrp_refone")
	@LazyToOne(value = LazyToOneOption.NO_PROXY)
	@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "bugLazyGrp")
	private RefOne refOne;

BugLazyGrp element = em.find(BugLazyGrp.class, 1L);

// one query for this one -> ok
// case 1
RefOne refOne = element.getRefOne();
		
// two queries -> KO
// case 2
RefMany1 refMany1 = element.getRefMany1();

Case 1 is fine, sql generated is :

• select refone0_.ref_one_id as ref_one_1_3_0_, refone0_.label as label2_3_0_ from ref_one refone0_ where refone0_.bug_lazy_grp_id=?

Case 2 generate 2 queries instead of 1

• select buglazygrp_.ref_many_1id as ref_many3_0_ from bug_lazy_grp buglazygrp_ where buglazygrp_.bug_lazy_grp_id=?
• select refmany1x0_.ref_many_1id as ref_many1_1_0_, refmany1x0_.description as descript2_1_0_ from ref_many_1 refmany1x0_ where refmany1x0_.ref_many_1id=?

Example code provided