From 00ff409d11f7f888f4d5416e6e2e0fb05cde8724 Mon Sep 17 00:00:00 2001
From: Laurence Chen <laurence@replware.dev>
Date: Thu, 4 May 2023 22:16:41 +0800
Subject: [PATCH] to complete duckdb example

---
 examples/mbrainz-duckdb/README.md             | 24 ++++---------------
 examples/mbrainz-duckdb/deps.edn              |  2 +-
 .../src/lambdaisland/mbrainz.clj              |  4 ++--
 3 files changed, 8 insertions(+), 22 deletions(-)

diff --git a/examples/mbrainz-duckdb/README.md b/examples/mbrainz-duckdb/README.md
index 12c9c25..f4a633a 100644
--- a/examples/mbrainz-duckdb/README.md
+++ b/examples/mbrainz-duckdb/README.md
@@ -2,7 +2,7 @@
 
 This example demonstrates how mbrainz datomic database works with the 
 plenish. To use this example, we need to prepare the Datomic database
-and the empty Postgres database.
+and the empty duckDB database.
 
 ## Prepare the Datomic database
 ### Getting Datomic
@@ -38,29 +38,15 @@ From the `datomic-pro-$VERSION` directory, [restore the backup](http://docs.dato
 ## Prepare the empty duckdb database
 
 1. Install duckdb CLI. Homebrew: `brew install duckdb`
+2. rm /tmp/mbrainz
 
-## Init the nREPL
+## Init the nREPL with Debug flag
 
 ```
-clj -M:dev:cider:postgresql:datomic-pro
+export PLENISH_DEBUG=true &&  clj -M:dev:cider:duckdb:datomic-pro
 ```
 
 ## Results
 
-After running the commands in `src/lambdaisland/mbrainz.clj`, the tables in Postgres db are
+After running the commands in `src/lambdaisland/mbrainz.clj`, the tables in duckDB are
 
-```
-mbrainz# \d
-               List of relations
- Schema │        Name        │ Type  │  Owner  
-────────┼────────────────────┼───────┼─────────
- public │ artist             │ table │ plenish
- public │ idents             │ table │ plenish
- public │ idents_x_partition │ table │ plenish
- public │ release            │ table │ plenish
- public │ release_x_artists  │ table │ plenish
- public │ release_x_labels   │ table │ plenish
- public │ release_x_media    │ table │ plenish
- public │ transactions       │ table │ plenish
-(8 rows)
-```
diff --git a/examples/mbrainz-duckdb/deps.edn b/examples/mbrainz-duckdb/deps.edn
index 2e6b11a..6a82738 100644
--- a/examples/mbrainz-duckdb/deps.edn
+++ b/examples/mbrainz-duckdb/deps.edn
@@ -5,7 +5,7 @@
   com.cnuernber/charred {:mvn/version "1.028"}
   com.github.seancorfield/next.jdbc {:mvn/version "1.3.874"}
   com.github.seancorfield/honeysql {:mvn/version "2.4.1026"}
-  com.lambdaisland/plenish {:mvn/version "0.4.50"}}
+  com.lambdaisland/plenish {:local/root "../../" }}
 
  :mvn/repos
  {"my.datomic.com" {:url "https://my.datomic.com/repo"}}
diff --git a/examples/mbrainz-duckdb/src/lambdaisland/mbrainz.clj b/examples/mbrainz-duckdb/src/lambdaisland/mbrainz.clj
index 21b7675..ec88b4f 100644
--- a/examples/mbrainz-duckdb/src/lambdaisland/mbrainz.clj
+++ b/examples/mbrainz-duckdb/src/lambdaisland/mbrainz.clj
@@ -6,7 +6,7 @@
    [next.jdbc.result-set :as rs]))
 
 (def datomic-conn (d/connect "datomic:dev://localhost:4334/mbrainz-1968-1973"))
-(def pg-conn (jdbc/get-datasource "jdbc:pgsql://localhost:5432/mbrainz?user=plenish&password=plenish"))
+(def duck-conn (jdbc/get-datasource "jdbc:duckdb:/tmp/mbrainz"))
 
 (def metaschema
   {:tables {:release/name {}
@@ -15,5 +15,5 @@
 (def initial-ctx (plenish/initial-ctx datomic-conn metaschema))
 
 (def new-ctx (plenish/import-tx-range
-              initial-ctx datomic-conn pg-conn
+              initial-ctx datomic-conn duck-conn
               (d/tx-range (d/log datomic-conn) nil nil)))