From 273f7eddf8d40cf369efbe648d595b4d38bf1c16 Mon Sep 17 00:00:00 2001
From: Graham <gpe@openrs2.org>
Date: Sun, 31 Jan 2021 21:44:04 +0000
Subject: [PATCH] Use a CTE to reduce duplication in CacheExporter

Signed-off-by: Graham <gpe@openrs2.org>
---
 .../openrs2/archive/cache/CacheExporter.kt    | 34 +++++++++----------
 1 file changed, 16 insertions(+), 18 deletions(-)

diff --git a/archive/src/main/kotlin/org/openrs2/archive/cache/CacheExporter.kt b/archive/src/main/kotlin/org/openrs2/archive/cache/CacheExporter.kt
index c27123d8..37c013b2 100644
--- a/archive/src/main/kotlin/org/openrs2/archive/cache/CacheExporter.kt
+++ b/archive/src/main/kotlin/org/openrs2/archive/cache/CacheExporter.kt
@@ -18,29 +18,27 @@ public class CacheExporter @Inject constructor(
         database.execute { connection ->
             connection.prepareStatement(
                 """
-                SELECT 255::uint1, e.archive_id::INTEGER, c.data, NULL
-                FROM master_index_entries e
-                JOIN master_indexes m ON m.container_id = e.container_id
-                JOIN groups g ON g.archive_id = 255 AND g.group_id = e.archive_id::INTEGER AND g.truncated_version = e.version & 65535
-                JOIN containers c ON c.id = g.container_id AND c.crc32 = e.crc32
-                JOIN indexes i ON i.container_id = g.container_id AND i.version = e.version
-                WHERE m.container_id = ?
+                WITH t AS (
+                    SELECT e.archive_id, c.data, g.container_id
+                    FROM master_indexes m
+                    JOIN master_index_entries e ON e.container_id = m.container_id
+                    JOIN groups g ON g.archive_id = 255 AND g.group_id = e.archive_id::INTEGER AND g.truncated_version = e.version & 65535
+                    JOIN containers c ON c.id = g.container_id AND c.crc32 = e.crc32
+                    JOIN indexes i ON i.container_id = g.container_id AND i.version = e.version
+                    WHERE m.container_id = ?
+                )
+                SELECT 255::uint1, t.archive_id::INTEGER, t.data, NULL
+                FROM t
                 UNION ALL
-                SELECT e.archive_id, ie.group_id, c.data, g.truncated_version
-                FROM master_index_entries e
-                JOIN master_indexes m ON m.container_id = e.container_id
-                JOIN groups ig ON ig.archive_id = 255 AND ig.group_id = e.archive_id::INTEGER AND ig.truncated_version = e.version & 65535
-                JOIN containers ic ON ic.id = ig.container_id AND ic.crc32 = e.crc32
-                JOIN indexes i ON i.container_id = ig.container_id AND i.version = e.version
-                JOIN index_groups ie ON ie.container_id = ig.container_id
-                JOIN groups g ON g.archive_id = e.archive_id AND g.group_id = ie.group_id AND g.truncated_version = ie.version & 65535
-                JOIN containers c ON c.id = g.container_id AND c.crc32 = ie.crc32
-                WHERE m.container_id = ?
+                SELECT t.archive_id, ig.group_id, c.data, g.truncated_version
+                FROM t
+                JOIN index_groups ig ON ig.container_id = t.container_id
+                JOIN groups g ON g.archive_id = t.archive_id::INTEGER AND g.group_id = ig.group_id AND g.truncated_version = ig.version & 65535
+                JOIN containers c ON c.id = g.container_id AND c.crc32 = ig.crc32
             """.trimIndent()
             ).use { stmt ->
                 stmt.fetchSize = BATCH_SIZE
                 stmt.setLong(1, id)
-                stmt.setLong(2, id)
 
                 stmt.executeQuery().use { rows ->
                     alloc.buffer(2, 2).use { versionBuf ->