HydratedCompoundValueHandler (Hibernate JavaDocs)

```
public interface HydratedCompoundValueHandler
```
Where to begin... :) This gets to the internal concept of 2-phase loading of entity data and how specifically it is done. Essentially for composite values, the process of hydration results in a tuple array comprising the composition "atomic" values. For example, a Name component's hydrated state might look like ["Steve", "L", "Ebersole"]. There are times when we need to be able to extract individual pieces out of the hydrated tuple array. For example, for an entity with a composite identifier part of which is an association (a key-many-to-one) we often need to attempt 2-phase processing on the association portion of the identifier's hydrated tuple array. This contract allows us access to portions of the hydrated tuple state.

Methods
Modifier and Type	Method and Description
`Object`	`extract(Object hydratedState)`
`void`	`inject(Object hydratedState, Object value)`

void inject(Object hydratedState,
          Object value)

Interface HydratedCompoundValueHandler