ManyToOne associations in embeddable collection elements are always eagerly loaded in Hibernate 5

Environment

• Red Hat JBoss Enterprise Application Platform (EAP) 7
• Hibernate 5

Issue

• An entity includes an element collection of embeddable types with a ManyToOne association to another entity

  	@Entity(name = "Parent")
  	public static class Parent {
  		@Id
  		@GeneratedValue
  		private int id;
  
  		@ElementCollection
  		private Set<ContainedChild> containedChildren = new HashSet<ContainedChild>();
  	}
  
  	@Entity(name = "Child")
  	public static class Child {
  		@Id
  		@GeneratedValue
  		private int id;
  
  	}
  
  	@Embeddable
  	public static class ContainedChild {
  		@ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
  		private Child child;
  
  		ContainedChild() {
  		}
  
  		ContainedChild(Child child) {
  			this.child = child;
  		}
  	}
  

• When the element collection is initialized, the associated ManyToOne entities will be eagerly loaded.

Resolution

This issue¹ is resolved in This content is not included.EAP 7.1 cumulative patch (C4) 4 and later releases.

Root Cause

This is a known defect (Content from hibernate.atlassian.net is not included.HHH-12687).

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