Change Log

0.4.29

Fixed

• Correct handling of rule clauses in dtlv
• Documentation clarification that we do not support "db as a value"

0.4.28

Added

• Datafy/nav for entity [Thanks @den1k]
• Some datom convenience functions, e.g. datom-eav, datom-e, etc.

Changed

• Talk to Babashka pods client in transit+json

0.4.27

Added

• Exposed more functions to Babashka pod

0.4.26

Added

• Native Datalevin can now work as a Babashka pod

0.4.23

Added

• Compile to native on Windows and handle Windows path correctly
• close-db convenience function to close a Datalog db

0.4.21

Changed

• Compile to Java 8 bytecode instead of 11 to have wider compatibility
• Use UTF-8 throughout for character encoding

0.4.20

Improved

• Improve dtlv REPL (doc f) display

0.4.19

Improved

• Provide Datalevin C source as a zip to help compiling native Datalevin dependency

0.4.17

Improved

• Minor improvement on the command line tool

0.4.16

Changed

• Native image now bundles LMDB

0.4.13

Fixed

• Handle list form in query properly in command line shell [#42]

0.4.4

Changed

• Consonidated all user facing functions to datalevin.core, so users don't have to understand and require different namespaces in order to use all features.

0.4.0

Changed

• [Breaking] Removed AEV index, as it is not used in query. This reduces storage and improves write speed.
• [Breaking] Change VAE index to VEA, in preparation for new query engine. Now all indices have the same order, just rotated, so merge join is more likely.
• [Breaking] Change open-lmdb and close-lmdb to open-kv and close-kv, lmdb/transact to lmdb/transact-kv, so they are consistent, easier to remember, and distinct from functions in datalevin.core.

Added

• GraalVM native image specific LMDB wrapper. This wrapper allocates buffer memory in C and uses our own C comparator instead of doing these work in Java, so it is faster.
• Native command line shell, dtlv

0.3.17

Changed

• Improve Java interop call performance

0.3.16

Changed

• Allow Java interop calls in where clauses, e.g. [(.getTime ?date) ?timestamp], [(.after ?date1 ?date2)], where the date variables are :db.type/instance. [#32]

0.3.15

Changed

• Changed default LMDB write behavior to use writable memory map and asynchronous msync, significantly improved write speed for small transactions (240X improvement for writing one datom at a time).

0.3.14

Fixed

• Read :db.type/instant value as java.util.Date, not as long [#30]

0.3.13

Fixed

• Fixed error when transacting different data types for an untyped attribute [#28, thx @den1k]

0.3.12

Fixed

• proper exception handling in lmdb/open-lmdb

0.3.11

Fixed

• Fixed schema update when reloading data from disk

0.3.10

Fixed

• Fixed core/get-conn schema update

0.3.9

Changed

• Remove unnecessary locks in read transaction
• Improved error message and documentation for managing LMDB connection

Added

• core/get-conn and core/with-conn

0.3.8

Fixed

• Correctly handle init-max-eid for large values as well.

0.3.7

Fixed

• Fixed regression introduced by 0.3.6, where :ignore value was not considered [#25]

0.3.6

Fixed

• Add headers to key-value store keys, so that range queries work in mixed data tables

0.3.5

Changed

• Expose all data types to key-value store API [#24]

0.3.4

Fixed

• thaw error for large values of :data type. [#23]

Changed

• portable temporary directory. [#20, thx @joinr]

0.3.3

Fixed

• Properly initialize max-eid in core/empty-db

0.3.2

Changed

• Add value type for :db/ident in implicit schema

0.3.1

Changed

• [Breaking] Change argument order of core/create-conn, db/empty-db etc., and put dir in front, since it is more likely to be specified than schema in real use, so users don't have to put nil for schema.

0.2.19

Fixed

• correct core/update-schema

0.2.18

Fixed

• correctly handle false value as :data
• always clear buffer before putting data in

0.2.17

Fixed

• thaw exception when fetching large values

0.2.16

Changed

• clearer error messages for byte buffer overflow

0.2.15

Fixed

• correct schema update

0.2.14

Added

• core/schema and core/update-schema

0.2.13

Added

• core/closed?

0.2.12

Fixed

• db/entid allows 0 as eid

0.2.11

Fixed

• fix test

0.2.10

Fixed

• correct results when there are more than 8 clauses
• correct query result size

0.2.9

Changed

• automatically re-order simple where clauses according to the sizes of result sets
• change system dbi names to avoid potential collisions

Fixed

• miss function keywords in cache keys

0.2.8

Added

• hash-join optimization submitted PR #362 to Datascript
• caching DB query results, significant query speed improvement

0.2.7

Fixed

• fix invalid reuse of reader locktable slot #7

Changed

• remove MDB_NOTLS flag to gain significant small writes speed

0.2.6

Fixed

• update existing schema instead of creating new ones

0.2.5

Fixed

• Reset transaction after getting entries
• Only use 24 reader slots

0.2.4

Fixed

• avoid locking primitive #5
• create all parent directories if necessary

0.2.3

Fixed

• long out of range error during native compile

0.2.2

Changed

• apply query/join-tuples optimization
• use array get wherenever we can in query, saw significant improvement in some queries.
• use db/-first instead of (first (db/-datom ..)), db/-populated? instead of (not-empty (db/-datoms ..), as they do not realize the results hence faster.
• storage test improvements

0.2.1

Changed

• use only half of the reader slots, so other processes may read

Added

• add an arity for bits/read-buffer and bits/put-buffer
• add lmdb/closed?, lmdb/clear-dbi, and lmdb/drop-dbi

0.2.0

Added

• code samples
• API doc
• core/close

0.1.0

Added

• Port datascript 0.18.13