I'm getting an Exception^ Exception occurred in target VM: failed to lazily initialize a collection, no session or session was closed org.hibernate.LazyInitializationException: failed to lazily initialize a collection, no session or session was closed
I do not understand why I have problems. I do not use lazy loading. This is my Role.hbm.xml:
<hibernate-mapping>
<class name="ru.itlect.bzdur.security.Role" table="Roles" >
<meta attribute="class-description">
</meta>
<id column="id" name="id" type="int">
<generator class="native"/>
</id>
<property column="displayName" name="displayName" not-null="true" type="string"/>
<property column="removed" name="removed" not-null="true" type="boolean"/>
<property column="hidden" name="hidden" not-null="true" type="boolean"/>
<property column="system" name="system" not-null="true" type="boolean"/>
<set name="permitionParams" table="Permitions" inverse="true" lazy="false" fetch="select" cascade="all" >
<key>
<column name="RoleID" not-null="true" />
</key>
<one-to-many class="ru.itlect.bzdur.security.PermitionParam" />
</set>
</class>
</hibernate-mapping>
The more strange the place where I loose Hibernate Session. Role.java:
public class Role {
private int id;
private Set<PermitionParam> permitionParams;
private final Map<String, PermitionParam> permitionMap = new HashMap<>();
...
public void setPermitionParams(Set<PermitionParam> permitionParams) {
permitionMap.clear();
if(permitionParams == null){
this.permitionParams = new HashSet<>();
return;
}
this.permitionParams = permitionParams;
for(PermitionParam param : permitionParams){
permitionMap.put(param.getPermition().getName(), param);
}
}
...
}
The Exception is thrown on the line: for(PermitionParam param : permitionParams){, whene I call save() methode of the CrudRepository. Hibernate creates the new copy of the Role object and calls its setters. I do not understand how I can loose the Session in that moment.
Please help me.
