This will faciliate loading a block into a type specific result without
first loading the block. This will also allow us to populate the database
index solely from the index.
There is a lot of allocations performed when decoding blocks. These
types can be re-used to reduce allocations in many cases. This change
allows a type specific slice to be passed in to decode funcs to be re-used
if it is large enough.
The existing decode is is left for backwards compatibility but is not
very efficient right now. It may be removed.
This prevented the encoders from using other implementations of the Value
interface because it would always cast one of the types to our specific
implementations.
If DecodeSameTypeBlock is called on on an empty Values slice, it would
panic with an index out of bounds error. This func can actually be removed
because DecodeBlock can determine what type of values are encoded already.
This will still panic if the block cannot be decoded due to other reasons.
Fixes#4365
Will make it less error-prone to add new encodings int the future
since each encoder has it's set of constants. There are some placeholder
contants for uncompressed encodings which are not in all encoder currently.
Philip O'Toole
Jason Wilder
Philip O'Toole
Ben Johnson
Paul Dix