JPA - EntityExistsException with Composite Id

[Rodrigo Sasaki]

Hello everyone.

I am having a problem with JPA that I can't understand why. Here's the scenario.

I have my entity called RecipeVersion, that has a composite Id, that is composed by

recipeVersionId | recipeId | storeId

There is a business rule, that whenever a recipe version is already associated with a product, it cannot be altered, if the user tries to alter that version, a new version is persisted with his alterations, leaving the original one unchanged.

so when I get on this specific case, I make a copy of the object, so I don't have any problem with the references and add 1 to the value of the version by code.

if the PK is:

recipeVersionId = 1
recipeId = 32
storeId = 1

I search the database for the highest version of that recipe, and add 1, so in this case, if there is only that 1 recipe, the new PK looks like this:

recipeVersionId = 2
recipeId = 32
storeId = 1

But when I try to persist this new object, an EntityExistsException is thrown.

javax.persistence.EntityExistsException: a different object with the same identifier value was already associated with the session:
[com.model.scm.RecipeVersionVO#com.model.scm.RecipeVersionPK@1845a]

My Composite Id is mapped with @IdClass Annotation.

Does anybody have any ideas on what this might be?

Or any suggestions, I heared some people say this may happen because I try to control the recipeVersionId by code, is there any other way I could do it?

Please let me know if you need me to post some code or configuration, for a more clear view.

Thanks!

EDIT:PS: I have already tried detaching the object I create my copy from, using entityManager.detach but that still didn't work

EDIT 2: Here are the entities

@Entity
@Table(name = "PRODUCTRECIPEVERSION", schema = "SCHEMA")
@IdClass(RecipeVersionPK.class)
public class RecipeVersionVO implements Serializable{

	private static final long serialVersionUID = 2802483639182219655L;

	@Id
	@Column(name = "RECIPEVERSION", unique = true, nullable = false, precision = 22, scale = 0)
	private Long id;

	@Id
	@Column(name = "IOFPK", nullable = false, precision = 22, scale = 0)
	private Long iofpk;

	@Id
	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumns({ 
		@JoinColumn(name = "RECIPEID", referencedColumnName = "RECIPEID", nullable = false, insertable = false, updatable = false),
		@JoinColumn(name = "IOFFK_RECIPE", referencedColumnName = "IOFPK", nullable = false, insertable = false, updatable = false) })
	private RecipeVO recipe;

	@Column(name = "TOTALWEIGHTAVERAGE", nullable = false, precision = 10, scale = 4)
	private Double totalWeightAverage;

	@Column(name = "OVENLOSS", nullable = false, precision = 5)
	private Double ovenLoss;

	@Column(name = "PREPARATION", length = 200)
	private String preparation;

	@Column(name = "PRODUCTIVITY", nullable = false, precision = 10, scale = 4)
	private Double productivity;

	@Column(name = "RECIPETOTALWEIGHT", nullable = false, precision = 10, scale = 4)
	private Double totalWeight;

	@Column(name = "RECIPETOTALCOST", nullable = false, precision = 14, scale = 4)
	private Double totalCost;

	@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "recipeVersion")
	private List<PackagingVO> packagings;

	@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "recipeVersion")
	private List<IngredientVO> ingredients;

        // getters and setters

}

public class RecipeVersionPK implements Serializable{

	private static final long serialVersionUID = -4026673239064246710L;

	@Id
	@Column(name = "RECIPEVERSION", unique = true, nullable = false, precision = 22, scale = 0)
	private Long version;

	@Id
	@Column(name = "IOFPK", nullable = false, precision = 22, scale = 0)
	private Long iofpk;

	@Id
	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumns({ 
		@JoinColumn(name = "RECIPEID", referencedColumnName = "RECIPEID", nullable = false, insertable = false, updatable = false),
		@JoinColumn(name = "IOFFK_RECEITA", referencedColumnName = "IOFPK", nullable = false, insertable = false, updatable = false) })
	private RecipeVO recipe;

        // getters and setters

}