java - JAXB Unmarshalling Entities - References null -

java - JAXB Unmarshalling Entities - References null -

i have 2 mapping classes (analogue jpa classes):

aelement.java

@xmltype(proporder = {"name", "children", }) @xmlrootelement(name = "a") @xmlaccessortype( xmlaccesstype.property) public class aelement implements serializable { private string name; private list<belement> children; @xmlelement(name = "metadatum") public list<belement> getchildren(){ homecoming children; } ... }

belement.java

@xmlrootelement(name = "b") @xmltype(proporder = {"name"}) public class belement implements serializable{ private string name; private aelement parent; ... }

a , b in onetomany relation. xml should this:

<a> <b></b> <b></b> </a>

if unmarshal xml, map jpa classes , persist database stored correctly except references. means b stored without foreign key a in database.

i'm using jpa hibernate. next jpa classes:

a.java

@entity public class implements serializable { @id @generatedvalue(strategy = generationtype.identity) private long id; @column private string name; @onetomany(fetch = fetchtype.eager, cascade = cascadetype.all, mappedby = "parent") private list<b> children; public list<b> getchildren(){ homecoming children; } ... }

b.java

@entity public class b implements serializable{ @id @generatedvalue(strategy = generationtype.identity) private long id; @column private string name; @manytoone(optional = true) @joincolumn(name = "a_id", referencedcolumnname = "id") private parent; ... }

looks have assign appropriate each b. solves problem.

a.getb().foreach(b -> b.seta(a));

i don't know if workaround? because have other entities children of b.

java xml jpa jaxb unmarshalling