spring - How to mapping a list of java.net.URL with JPA? -


i try:

@onetomany(cascade = cascadetype.all, fetch = fetchtype.eager) protected list<url> urllist;

but error:

org.springframework.beans.factory.beancreationexception: error creating  bean name 'entitymanagerfactory' defined in servletcontext resource  [/web-inf/servlet-context.xml]: invocation of init method failed; nested  exception org.hibernate.annotationexception: use of @onetomany or  @manytomany targeting unmapped class:  my.package.mymodel.urllist[java.net.url]

i saw this answers, can't mapping list of urls.

using elementcollection , collectiontable way map collection of non-entity elements. 

@elementcollection @collectiontable(name="my_urls") collection<url> urllist;

then depend on whether jpa provider supports persistence of element type (url) out of box. provider (datanucleus) does. can use attributeconverter if doesn't


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