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Entity.getChildList().add(childEntity) :child entity is not persisted. [message #640487]

Mon, 22 November 2010 05:13

MITHUN
Messages: 2
Registered: November 2010

Junior Member

Hello

i am having a parent enity with the following relation with a child entity.
@OneToMany(mappedBy="studyTreatmentGrp", cascade={CascadeType.ALL}, fetch=FetchType.LAZY)

in the child entity the relationship is as follows
@ManyToOne(cascade={CascadeType.PERSIST,CascadeType.MERGE,Ca scadeType.REFRESH}) @JoinColumn(name="S_TREAT_GROUP_ID")

i am adding child entity to the existing collection using entity.getChildList().add(childEntity),
but some times the child entity is not getting persisted.

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Re: Entity.getChildList().add(childEntity) :child entity is not persisted. [message #640583 is a reply to message #640487]

Mon, 22 November 2010 09:39

James Sutherland
Messages: 1939
Registered: July 2009
Location: Ottawa, Canada

Senior Member

Ensure you are setting both sides of the bi-directional relationship. If you add the child to the collection, also set its parent. Normally you would define an addChild() method on the parent that sets the back reference instead of adding directly to the collection.

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