[RANGER-2107] Use Spring to inject DAOs

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Fix Version/s: 1.1.0
• Component/s: admin
• Labels: code-cleanup codehealth
• Flags: Patch
• Assignee: Zsombor Gegesy
• Reporter: Zsombor Gegesy
• Created: 17/May/18 21:40
• Updated: 24/May/18 09:38
• Resolved: 24/May/18 09:38

Description

Currently, instead of relying on Spring to inject the DAOs internally, Ranger use a RangerDaoManager to create and acquire objects, which lead to a lot of unnecessary generic code which complicates the code.
 Instead of this, all the 'DAO' needs a simple '@Service' annotation, and RangerBaseModelService.entityDao and AbstractBaseResourceService.entityDao can be marked as @Autowired - and Spring will do her job. (Spring before <4.0 were unable to autowire fields based on the generic parameters).
Later all the RangerDaoManagerBase method could be removed.