From 020d32cedc2e64c0b8a9d962c2fdf38f5f1ab894 Mon Sep 17 00:00:00 2001
From: Andrew Golovashevich <landgrafhomyak@gmail.com>
Date: Sat, 22 Feb 2025 17:30:46 +0300
Subject: [PATCH] Optimization hint on virtual types and rewrote JoinType class
 structure

---
 .../db/serdha0/api/misc/DatabaseType.kt       |  6 ++--
 .../db/serdha0/api/queries/SelectQuery.kt     | 36 ++++++++++++-------
 2 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/db/serdha0/api/misc/DatabaseType.kt b/src/commonMain/kotlin/ru/landgrafhomyak/db/serdha0/api/misc/DatabaseType.kt
index 82aa610..6c69f69 100644
--- a/src/commonMain/kotlin/ru/landgrafhomyak/db/serdha0/api/misc/DatabaseType.kt
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/db/serdha0/api/misc/DatabaseType.kt
@@ -17,8 +17,10 @@ public interface DatabaseType<@Suppress("unused") RT> {
 	public val name: String
 
 	public abstract class _VirtualType<RT, wRT, wDT : DatabaseType<wRT>>(
-		@Suppress("MemberVisibilityCanBePrivate") @JvmField
-		public val wraps: wDT
+		@JvmField
+		public val wraps: wDT,
+		@JvmField
+		public val allowValuesCaching: Boolean = true
 	) : DatabaseType<RT> {
 		@Suppress("FunctionName")
 		public abstract fun _unwrap(w: wRT): RT
diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/db/serdha0/api/queries/SelectQuery.kt b/src/commonMain/kotlin/ru/landgrafhomyak/db/serdha0/api/queries/SelectQuery.kt
index 49c7e01..16ebe1c 100644
--- a/src/commonMain/kotlin/ru/landgrafhomyak/db/serdha0/api/queries/SelectQuery.kt
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/db/serdha0/api/queries/SelectQuery.kt
@@ -15,19 +15,29 @@ public interface SelectQuery<out qUE : Any> : _Query<qUE> {
 		ASC, DESC
 	}
 
-	public class JoinType(
-		public val leftNull: LeftNull,
-		public val join: Join
-	) {
-		public enum class LeftNull {
-			NULL_NOT_EXPECTED,
-			AS_ID, SKIP, JOIN_TO_NULL
+	public abstract class JoinType {
+		public class LeftJoin(
+			public val leftNull: Null,
+			public val behaviour: Behaviour
+		) : JoinType() {
+			@Suppress("ClassName")
+			public abstract class Null {
+				public object NULL_NOT_EXPECTED : Null()
+				public object AS_ID : Null()
+				public object SKIP : Null()
+				public object JOIN_TO_NULL : Null()
+			}
+
+			@Suppress("ClassName")
+			public abstract class Behaviour {
+				public object LEFT_TO_UNIQUE_RIGHT : Behaviour()
+				public object LEFT_TO_UNIQUE_RIGHT_OR_TO_NULL : Behaviour()
+				public object LEFT_FOR_EACH_RIGHT : Behaviour()
+				public object LEFT_FOR_EACH_RIGHT_OR_TO_NULL : Behaviour()
+			}
 		}
 
-		public enum class Join {
-			LEFT_TO_FIRST_RIGHT, LEFT_FOR_EACH_RIGHT, LEFT_FOR_EACH_RIGHT_OR_TO_NULL,
-			EACH_LEFT_TO_EACH_RIGHT
-		}
+		public object CrossJoin : JoinType()
 	}
 
 	@Suppress("ClassName")
@@ -79,8 +89,8 @@ public interface SelectQuery<out qUE : Any> : _Query<qUE> {
 			public val left: _Selectable<lsqUE>
 			public val right: _Selectable<rsqUE>
 			public val joinType: JoinType
-			public val referenceColumn: Column<*, *, lsqUE>
-			public val targetColumn: Column<*, *, rsqUE>
+			public val leftColumnToJoin: Column<*, *, lsqUE>
+			public val rightColumnToJoin: Column<*, *, rsqUE>
 
 			public fun createSelectWithJoin(context: Scope<qUE, lsqUE, rsqUE>): qUE