Previously bleve allowed you to create a memory-only index by
simply passing "" as the path argument to the New() method.
This was not clear when reading the code, and led to some
problematic error cases as well.
Now, to create a memory-only index one should use the
NewMemOnly() method. Passing "" as the path argument
to the New() method will now return os.ErrInvalid.
Advanced users calling NewUsing() can create disk-based or
memory-only indexes, but the change here is that pass ""
as the path argument no longer defaults you into getting
a memory-only index. Instead, the KV store is selected
manually, just as it is for the disk-based solutions.
Here is an example use of the NewUsing() method to create
a memory-only index:
NewUsing("", indexMapping, Config.DefaultIndexType,
Config.DefaultMemKVStore, nil)
Config.DefaultMemKVStore is just a new default value
added to the configuration, it currently points to
gtreap.Name (which could have been used directly
instead for more control)
closes#427
this lays the foundation for supporting the new firestorm
indexing scheme. i'm merging these changes ahead of
the rest of the firestorm branch so i can continue
to make changes to the analysis pipeline in parallel
refactor to share code in emulated batch
refactor to share code in emulated merge
refactor index kvstore benchmarks to share more code
refactor index kvstore benchmarks to be more repeatable
1. text analysis is now done before the write lock is acquired
2. there is now a pool of analysis workers
3. the size of this pool is configurable
4. this allows for documents in a batch to be analyzed concurrently
as a part of benchmarking these changes i've also introduce a new
null storage implementation. this should never be used, as it
does not actualy build an index. it does however let us go
through all the normal indexing machinery, without incuring
any indexing I/O. this is very helpful in measuring improvements
made to the text analsysis pipeline, which are often overshadowed
by indexing times in benchmarks actually building an index.
this started initially to relocate highlighting into
a self contained package, which would then also use
the registry
however, it turned into a much larger refactor in
order to avoid cyclic imports
now facets, searchers, scorers and collectors
are also broken out into subpackages of search
