Track event sequences globally, not per channel.

Per-channel event sequences were a cute idea, but it made reasoning about event resumption much, much harder (case in point: recovering the order of events in a partially-ordered collection is quadratic, since it's basically graph sort). The minor overhead of a global sequence number is likely tolerable, and this simplifies both the API and the internals.

1 files changed, 44 insertions, 0 deletions

diff --git a/.sqlx/query-5244f04bc270fc8d3cd4116854398e2151ba2dba10c03a9d2d93184141f1425c.json b/.sqlx/query-5244f04bc270fc8d3cd4116854398e2151ba2dba10c03a9d2d93184141f1425c.json
new file mode 100644
index 0000000..820b43f
--- /dev/null
+++ b/.sqlx/query-5244f04bc270fc8d3cd4116854398e2151ba2dba10c03a9d2d93184141f1425c.json
@@ -0,0 +1,44 @@
+{
+  "db_name": "SQLite",
+  "query": "\n                select\n                    channel.id as \"channel_id: channel::Id\",\n                    channel.name as \"channel_name\",\n                    channel.created_at as \"channel_created_at: DateTime\",\n                    channel.created_sequence as \"channel_created_sequence: Sequence\",\n                    message.id as \"message: message::Id\"\n                from message\n                    join channel on message.channel = channel.id\n                    join login as sender on message.sender = sender.id\n                where sent_at < $1\n            ",
+  "describe": {
+    "columns": [
+      {
+        "name": "channel_id: channel::Id",
+        "ordinal": 0,
+        "type_info": "Text"
+      },
+      {
+        "name": "channel_name",
+        "ordinal": 1,
+        "type_info": "Text"
+      },
+      {
+        "name": "channel_created_at: DateTime",
+        "ordinal": 2,
+        "type_info": "Text"
+      },
+      {
+        "name": "channel_created_sequence: Sequence",
+        "ordinal": 3,
+        "type_info": "Integer"
+      },
+      {
+        "name": "message: message::Id",
+        "ordinal": 4,
+        "type_info": "Text"
+      }
+    ],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": [
+      false,
+      false,
+      false,
+      false,
+      false
+    ]
+  },
+  "hash": "5244f04bc270fc8d3cd4116854398e2151ba2dba10c03a9d2d93184141f1425c"
+}