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Example queries and rules for working with the Datomic mbrainz example database

Clojure 100.00%

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Importing into new datomic dev-local setup?

Is this still possible, or do you have to jump through some hoops? :) Can't find any bin/datomic executables in the new dev-local install.

https://docs.datomic.com/cloud/dev-local.html

"Queries" wiki page issues

In section Running the Queries, there's a typo (probably from previous version of page): '(e.g. the string "Lupe Fiasco" in the example above).'
It should be: '(e.g. the string "Janis Joplin" in the example above).'
In section Fulltext the text description 'Let's find all of the tracks with the word "nevermore" in the title.' says "nevermore" but "always" is used later in text and in the query ('Query args' subsection).
In section Graph walk the text description 'Let's find Paul McCartney's collaboration network to a depth of 2.' says "Paul McCartney" but later in text and in the query "George Harrison" is used.

Incorrect docstring for :artist/type attribute?

This docstring for :artist/type seems nonsensical. Appears to be copied version of :artist/sortName attribute's docstring. Guessing it should be something like, "Enum, one of: ..."

mbrainz-sample/schema.edn

Line 66 in e0e810e

:db/doc "The artist's name for use in sorting, e.g. Beatles, The"

wrong doc for :artist/type (copy/pasted from :artist/name)

The :artist/type attribute has doc copied from the :artist/name attribute - "The artist's name for use in sorting, e.g. Beatles, The".

Most likely :artist/type is some enum, right, with values :artist.type/person, and some others?

AbstractRelease seems to be missing entirely

I've tried both the latest backup and the one from 2014-11-17.
There is not a single entity referenced from :release/abstractRelease

[:find ?artist :in $ :where [_ :abstractRelease/artists ?artist] ] returns empty set

[:find ?name :in $ :where [_ :abstractRelease/name ?name] ] too

Should it be deleted from the schema then?

Unable to restore-db

When trying to restore-db on OS X 10.11.6 with datomic-free-0.9.5390

bin/datomic restore-db file:///Users/piotrkosinski/Projects/mbrainz-1968-1973 datomic:free://localhost:4334/mbrainz-1968-1973

got this error

java.lang.NumberFormatException: For input string: ".DS_Store"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
    at java.lang.Long.parseLong(Long.java:578)
    at java.lang.Long.parseLong(Long.java:631)
    at datomic.backup$describe_backups$fn__9012.invoke(backup.clj:531)
    at clojure.core$mapv$fn__6953.invoke(core.clj:6627)
    at clojure.lang.PersistentVector.reduce(PersistentVector.java:341)
    at clojure.core$reduce.invokeStatic(core.clj:6544)
    at clojure.core$mapv.invokeStatic(core.clj:6618)
    at clojure.core$mapv.invoke(core.clj:6618)
    at datomic.backup$describe_backups.invokeStatic(backup.clj:531)
    at datomic.backup$describe_backups.invoke(backup.clj:522)
    at datomic.backup$latest_t.invokeStatic(backup.clj:627)
    at datomic.backup$latest_t.invoke(backup.clj:625)
    at datomic.backup$require_latest_t.invokeStatic(backup.clj:632)
    at datomic.backup$require_latest_t.invoke(backup.clj:630)
    at datomic.backup_cli$restore.invokeStatic(backup_cli.clj:51)
    at datomic.backup_cli$restore.invoke(backup_cli.clj:43)
    at clojure.lang.Var.invoke(Var.java:379)
    at clojure.lang.AFn.applyToHelper(AFn.java:154)
    at clojure.lang.Var.applyTo(Var.java:700)
    at clojure.core$apply.invokeStatic(core.clj:646)
    at clojure.core$apply.invoke(core.clj:641)
    at datomic.require$require_and_run.invokeStatic(require.clj:22)
    at datomic.require$require_and_run.doInvoke(require.clj:17)
    at clojure.lang.RestFn.invoke(RestFn.java:423)
    at datomic$_main$fn__28.invoke(datomic.clj:150)
    at datomic$_main.invokeStatic(datomic.clj:149)
    at datomic$_main.doInvoke(datomic.clj:142)
    at clojure.lang.RestFn.invoke(RestFn.java:436)
    at clojure.lang.Var.invoke(Var.java:388)
    at clojure.lang.AFn.applyToHelper(AFn.java:160)
    at clojure.lang.Var.applyTo(Var.java:700)
    at clojure.core$apply.invokeStatic(core.clj:646)
    at clojure.main$main_opt.invokeStatic(main.clj:314)
    at clojure.main$main_opt.invoke(main.clj:310)
    at clojure.main$main.invokeStatic(main.clj:421)
    at clojure.main$main.doInvoke(main.clj:384)
    at clojure.lang.RestFn.invoke(RestFn.java:551)
    at clojure.lang.Var.invoke(Var.java:419)
    at clojure.lang.AFn.applyToHelper(AFn.java:186)
    at clojure.lang.Var.applyTo(Var.java:700)
    at clojure.main.main(main.java:37)

Removing .DS_Store file from Projects/mbrainz-1968-1973 folder doesn't fix the problem.

Import fails on OS X with Datomic free 0.9.5173

Importing the mbrainz-file fails with following stacktrace:

Caused by: java.io.FileNotFoundException: Could not locate datomic/process_monitor__init.class or datomic/process_monitor.clj on classpath:
    at clojure.lang.RT.load(RT.java:443)
    at clojure.lang.RT.load(RT.java:411)
    at clojure.core$load$fn__5066.invoke(core.clj:5641)
    at clojure.core$load.doInvoke(core.clj:5640)
    at clojure.lang.RestFn.invoke(RestFn.java:408)
    at clojure.core$load_one.invoke(core.clj:5446)
    at clojure.core$load_lib$fn__5015.invoke(core.clj:5486)
    at clojure.core$load_lib.doInvoke(core.clj:5485)
    at clojure.lang.RestFn.applyTo(RestFn.java:142)
    at clojure.core$apply.invoke(core.clj:626)
    at clojure.core$load_libs.doInvoke(core.clj:5524)
    at clojure.lang.RestFn.applyTo(RestFn.java:137)
    at clojure.core$apply.invoke(core.clj:626)
    at clojure.core$require.doInvoke(core.clj:5607)
    at clojure.lang.RestFn.invoke(RestFn.java:551)
    at datomic.backup_cli$loading__4958__auto__.invoke(backup_cli.clj:1)
    at datomic.backup_cli__init.load(Unknown Source)
    at datomic.backup_cli__init.<clinit>(Unknown Source)
    ... 34 more

It works with datomic free 0.9.5153.

New version of this code from Stuart

Any chance you could update this repo with the updated code referenced by Stuart in the video Simplifying ETL with Clojure and Datomic - Stuart Halloway?

Can't restore db

For some reasons i (as a datomic noob) can't restore tutorial db

~/dist/datomic-pro-0.9.5130/bin/datomic restore-db file:///home/leuser/work/clojure/tutorials/dod/mbrainz-1968-1973/ datomic:dev://localhost:4334/mbrainz-1968-1973
Copied 0 segments, skipped 0 segments.
Copied 631 segments, skipped 0 segments.
Copied 935 segments, skipped 0 segments.
java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: clojure.lang.ExceptionInfo: :restore/read-failed Unable to read 546abffa-c4cf-461e-aea5-2f0ec83c7de3_00000000000000A {:db/error :restore/read-failed, :key "546abffa-c4cf-461e-aea5-2f0ec83c7de3_00000000000000A"}

datomic / mbrainz-sample Goto Github PK

mbrainz-sample's People

Contributors

Stargazers

Watchers

Forkers

mbrainz-sample's Issues

Importing into new datomic dev-local setup?

"Queries" wiki page issues

Incorrect docstring for :artist/type attribute?

wrong doc for :artist/type (copy/pasted from :artist/name)

AbstractRelease seems to be missing entirely

Unable to restore-db

Import fails on OS X with Datomic free 0.9.5173

New version of this code from Stuart

Can't restore db

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