We have created a BaseEntity with the following fields,
- primary key
- version
- date
I have created an ApplicationEntityLocator to get the getID, getVersion,
find(Entity) instead of writing them on each entity object.
public class EntityLocator extends Locator<BaseEntity, Long>
{
@Override
public BaseEntity create(Class<? extends BaseEntity> clazz)
{
try
{
return clazz.newInstance();
}
catch (InstantiationException e)
{
e.printStackTrace();
}
catch (IllegalAccessException e)
{
e.printStackTrace();
}
return null;
}
@Override
public BaseEntity find(Class<? extends BaseEntity> clazz, Long id)
{
return null;
}
@Override
public Class<BaseEntity> getDomainType()
{
return BaseEntity.class;
}
@Override
public Long getId(BaseEntity domainObject)
{
return domainObject.getPrimaryKey();
}
@Override
public Class<Long> getIdType()
{
return Long.class;
}
@Override
public Object getVersion(BaseEntity domainObject)
{
return domainObject.getEntityVersion();
}
}
I am not sure of how to use the existing Spring service layer to implement
the find method on the EntityLocator. How do i locate the service
implementation from inside EntityLocator, can i do the following in the find
method
HttpServletRequest request = RequestFactoryServlet.getThreadLocalRequest();
ApplicationContext context =
WebApplicationContextUtils.getWebApplicationContext(request.getSession()
.getServletContext());
context.getBean(clazz).find(id);
is this a good approach?
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