CollectionOfElements上的java.util.ConcurrentModificationException [英] java.util.ConcurrentModificationException on CollectionOfElements

问题描述

当我在Embedabble中有一个CollectionOfElements时，我似乎得到了一个ConcurrentModificationException。

I seem to get a ConcurrentModificationException when I have a CollectionOfElements inside an Embedabble.

如果希望这样，如果我将Route从Embedabble改为实体比一切工作正常。我甚至尝试添加@Version，但是这似乎不工作。

If would like to have it like that, however If I change Route from Embedabble's to Entity than everything works fine. I have even tried adding @Version, but that doesn't seem to work.

这里是我的类的一个片段。
Kart.java：

Here are a snippet of my classes. Kart.java:

@Entity
public class Kart {

@Id @GeneratedValue
private Long id;

@Column(nullable=false,length=256)
@NotNull
@Length(max=256)
private String name;

@OneToOne(cascade=CascadeType.ALL)
private File file;

@Version
private int version;

@CollectionOfElements
private Set<Route> route;

Route.java：

Route.java:

@Embeddable
public class Route {

@Parent
private Kart kart;

@NotNull
@Column(nullable = false, length = 256)
private String name;

@NotNull
@Column(nullable = false)
private Boolean visible = Boolean.valueOf(true);

@CollectionOfElements
private Set<Coordinates> coordinates;

@Version
private int version;

Coordinates.java：

Coordinates.java:

@Embeddable
public class Coordinates {

@NotNull
private int x;

@NotNull
private int y;

@Parent
private Route route;

@Version
private int version;

我已经为坐标和路线生成了Hashcode / equals

推荐答案

检查此JIRA条目。

Check this JIRA entry.

ConcurrentModificationException当嵌入的集合包含集合

这是Annotation Binder中的一个已知错误。问题在于Hibernate Core，它不支持嵌入式集合中的集合。

It's a known bug in the Annotation Binder. And the issue lies in Hibernate Core which doesn't support collections in collections of embedded.

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