CODEWITHSUNDEEP
jpaeclipselinklazy-loading
Kris
Kris

Reputation: 993

Eclipselink how to lazy load @Lob

According to documentation @Basic By default, EclipseLink JPA ignores the fetch attribute and default javax.persistence.FetchType.EAGER

How do you change the default so that it will lazyload?

http://wiki.eclipse.org/EclipseLink/UserGuide/JPA/Basic_JPA_Development/Mapping/Basic_Mappings/Lazy_Basics

Upvotes: 1

Views: 1989

Answers (2)

James
James

Reputation: 18379

Sorry, that documentation is wrong and confusing. I just updated it.

By default LAZY on a @Basic will work, as long a weaving is enabled. Weaving is enabled by default in JavaEE, and JavaSE when the EclipseLink agent is used. If you are in JavaSE and can't use the agent, then you can use static weaving.

Upvotes: 2

Chris
Chris

Reputation: 21145

The link you posted also states that lazy on basics and non collection mappings is ignored if weaving is not used. Weaving (via a runtime agent or static weaver) allows the byte code to be changed to add in code neccessary for lazy loading. So try using weaving as described here http://wiki.eclipse.org/EclipseLink/UserGuide/JPA/Advanced_JPA_Development/Performance/Weaving

Upvotes: 1

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