vtajzich / spring-hibernate4-multitenant

Example of multitenant usage - hibernate 4 & spring 3

spring-hibernate4-multitenant

Example of multitenant usage - hibernate 4 & spring 3

What it can do for you

Multitenant support offer to have multiple DBs or Schemas for "tenants". It is transparent from application point of view.

Options

• hibernate.multiTenancy
• DATABASE
• SCHEMA
• DISCRIMINATOR - it is planned for Hibernate 5

These two classes must be implemented by you

• hibernate.tenant_identifier_resolver - it must return tenant id for current thread. Typically from request header?

• hibernate.multi_tenant_connection_provider - it must return connection for given tenant indentifier (result of hibernate.tenant_identifier_resolver)

Quite interesting parts in code

• sessionFactory

• hibernateProperties

• • it can be set using map, so you can set bean for some hibernate properties (e.g. hibernate.tenant_identifier_resolver)
• • hibernate.hbm2ddl.auto cannot be used or it will fail

• webSessionTenantIdentifierResolver

• there is scope set to request so every http request to server will create new instance of this class but

• you have to use

<aop:scoped-proxy/>

to let spring create a proxy around this bean in order to provide new instance every time

• for request scoped bean you can use

@Autowired
private HttpServletRequest request;