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*Tantivy 0.10.0 index format is compatible with the index format in 0.9.0.*
- Added an API to easily tweak or entirely replace the
default score. See `TopDocs::tweak_score`and `TopScore::custom_score` (fulmicoton)
- Added an ASCII folding filter (drusellers)
- Bugfix in `query.count` in presence of deletes (fulmicoton)
- Added `.explain(...)` in `Query` and `Weight` to (fulmicoton)
- Added an efficient way to `delete_all_documents` in `IndexWriter` (petr-tik).
All segments are simply removed.
Minor
---------
- Switched to Rust 2018 (uvd)
- Small simplification of the code.
Calling .freq() or .doc() when .advance() has never been called
on segment postings should panic from now on.
- Tokens exceeding `u16::max_value() - 4` chars are discarded silently instead of panicking.
- Fast fields are now preloaded when the `SegmentReader` is created.
- `IndexMeta` is now public. (hntd187)
- `IndexWriter` `add_document`, `delete_term`. `IndexWriter` is `Sync`, making it possible to use it with a `Arc<RwLock<IndexWriter>>`. `add_document` and `delete_term` can
only require a read lock. (fulmicoton)
- Introducing `Opstamp` as an expressive type alias for `u64`. (petr-tik)
- Stamper now relies on `AtomicU64` on all platforms (petr-tik)
- Bugfix - Files get deleted slightly earlier
- Compilation resources improved (fdb-hiroshima)
How to update?
Your program should be usable as is.
Fast fields
Fast fields used to be accessed directly from the `SegmentReader`.
The API changed, you are now required to acquire your fast field reader via the
`segment_reader.fast_fields()`, and use one of the typed method:
- `.u64()`, `.i64()` if your field is single-valued ;
- `.u64s()`, `.i64s()` if your field is multi-valued ;
- `.bytes()` if your field is bytes fast field.