This is a major release only because it includes some breaking changes to previously unspecified behavior in the query logic to align it with expectations.
Prefixes
Prefixes in queries will now be cleaned (you may need to update your datastores for this).
Additionally, querying with a prefix /foo will now:
Match anything under /foo (including /foo/bar, etc.).
Not match /foo.
Not match /foobar.
This is what users want 90% of the time. Previously, one had to use the prefix /foo/ to mean "anything strictly under /foo. However, due to how key cleaning works, turning /foo/into a datastore key would result in/foo(which included/fooand/foobar`).
Mounts
Put: Given mounts at /foo and / in a mounted datastore, puts to /foo will now go in the / datastore, not /foo. Previously, puts to /foo would been written to / in the child datastore which isn't a valid key in many datastores.
Query: Previously, querying for the prefix /foo/ on a datastore with mounts /foo and / would search both datastores. However, keys starting with /foo living in / shouldn't be visible when another datastore is mounted at /foo.
Documentation
The behavior and edge cases of datastores is now better documented (and tested).
Commits
ac8b6e6 Merge pull request #148 from ipfs/test/capital
b026bf4 feat: add upper-case keys at a known prefix
b72ac7e Merge pull request #145 from ipfs/feat/enhance-tests
f2327ba test(suite): add a bunch of prefix tests for the new behavior
83f9a95 Merge pull request #141 from ipfs/fix/ancestor-sep
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Bumps github.com/ipfs/go-datastore from 0.3.1 to 0.4.1.
Release notes
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Commits
ac8b6e6Merge pull request #148 from ipfs/test/capitalb026bf4feat: add upper-case keys at a known prefixb72ac7eMerge pull request #145 from ipfs/feat/enhance-testsf2327batest(suite): add a bunch of prefix tests for the new behavior83f9a95Merge pull request #141 from ipfs/fix/ancestor-sep2fe8b68test(query): be thuroughae428d8test: add a lookup testbffc5fddoc(mount): fix and improve documentationd009ffbdoc: update and improve query docs5598edffix(key): only count a key as an ancestor or prefix if there is a separatorDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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