make repository connect to db

[zaienaji]

current repository implementation is in-memory object. it need to persist it into db, so we can add further improvement (eg cache only active records).

repository involved:

• [ ] material costing
• [ ] material transaction

[zaienaji]

To do for material transaction

• [x] before push/Append material transaction to costing calculator, save to repository
• [x] all find operation should retrieve from db, make sure db index exist for that where clause
• [x] when save movement out, cache it
• [x] when save movement in, and success, remove cache
• [x] when retrieve pair of movement in out, find in cache, if not exist find in db.

To do for material Costing

• [x] implement linked list instead of treeset
• [x] if expired remove from cache

[zaienaji]

Embedded db H2 that used by unit test, not support where <column> in (<value1>, <value2>, ... <valueN>). Propose to use postgresql for test DB, with separate DB instance.