From d83acb54e0e838525bdbbeabd7e3341804ff2a88 Mon Sep 17 00:00:00 2001
From: Alexanderius <alexander.krylkov@gmail.com>
Date: Sat, 13 Jan 2024 23:41:39 +0600
Subject: [PATCH] [#487] [add] PostgreSQL dialect

---
 .vscode/settings.json                         |  1 +
 .../ConfigurationExtensions.cs                | 21 +++++++++++++---
 .../PostgreSqlDialect.cs                      | 25 +++++++++++++++++++
 3 files changed, 43 insertions(+), 4 deletions(-)
 create mode 100644 src/Simplify.FluentNHibernate/PostgreSqlDialect.cs

diff --git a/.vscode/settings.json b/.vscode/settings.json
index 7356fbf9..64eef6f2 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -9,6 +9,7 @@
 		"indicies",
 		"langword",
 		"localizable",
+		"Postgre",
 		"registrator",
 		"seealso",
 		"serializer",
diff --git a/src/Simplify.FluentNHibernate/ConfigurationExtensions.cs b/src/Simplify.FluentNHibernate/ConfigurationExtensions.cs
index 975b6241..50931838 100644
--- a/src/Simplify.FluentNHibernate/ConfigurationExtensions.cs
+++ b/src/Simplify.FluentNHibernate/ConfigurationExtensions.cs
@@ -399,6 +399,7 @@ public static FluentConfiguration InitializeFromConfigPostgreSql(this FluentConf
 	/// <param name="configuration">The configuration containing database config section.</param>
 	/// <param name="configSectionName">Database configuration section name in configuration.</param>
 	/// <param name="additionalClientConfiguration">The additional client configuration.</param>
+	/// <param name="dialect">The dialect.</param>
 	/// <returns></returns>
 	/// <exception cref="ArgumentNullException">
 	/// fluentConfiguration
@@ -408,23 +409,35 @@ public static FluentConfiguration InitializeFromConfigPostgreSql(this FluentConf
 	public static FluentConfiguration InitializeFromConfigPostgreSql(this FluentConfiguration fluentConfiguration,
 		IConfiguration configuration,
 		string configSectionName = "DatabaseConnectionSettings",
-		Action<PostgreSQLConfiguration>? additionalClientConfiguration = null)
+		Action<PostgreSQLConfiguration>? additionalClientConfiguration = null,
+		PostgreSqlDialect dialect = PostgreSqlDialect.PostgreSQL83)
 	{
 		if (fluentConfiguration == null) throw new ArgumentNullException(nameof(fluentConfiguration));
 		if (configuration == null) throw new ArgumentNullException(nameof(configuration));
 
 		InitializeFromConfigPostgreSql(fluentConfiguration,
 			new ConfigurationBasedDbConnectionSettings(configuration, configSectionName),
-			additionalClientConfiguration);
+			additionalClientConfiguration,
+			dialect);
 
 		return fluentConfiguration;
 	}
 
 	private static void InitializeFromConfigPostgreSql(FluentConfiguration fluentConfiguration,
 		DbConnectionSettings settings,
-		Action<PostgreSQLConfiguration>? additionalClientConfiguration = null)
+		Action<PostgreSQLConfiguration>? additionalClientConfiguration = null,
+		PostgreSqlDialect dialect = PostgreSqlDialect.PostgreSQL83)
 	{
-		var clientConfiguration = PostgreSQLConfiguration.PostgreSQL82.ConnectionString(c => c
+		var clientConfiguration = dialect switch
+		{
+			PostgreSqlDialect.Standard => PostgreSQLConfiguration.Standard,
+			PostgreSqlDialect.PostgreSQL81 => PostgreSQLConfiguration.PostgreSQL81,
+			PostgreSqlDialect.PostgreSQL82 => PostgreSQLConfiguration.PostgreSQL82,
+			PostgreSqlDialect.PostgreSQL83 => PostgreSQLConfiguration.PostgreSQL83,
+			_ => throw new InvalidOperationException()
+		};
+
+		clientConfiguration.ConnectionString(c => c
 			.Host(settings.ServerName)
 			.Port(settings.Port ?? 5432)
 			.Database(settings.DataBaseName)
diff --git a/src/Simplify.FluentNHibernate/PostgreSqlDialect.cs b/src/Simplify.FluentNHibernate/PostgreSqlDialect.cs
new file mode 100644
index 00000000..3f10d8f7
--- /dev/null
+++ b/src/Simplify.FluentNHibernate/PostgreSqlDialect.cs
@@ -0,0 +1,25 @@
+namespace Simplify.FluentNHibernate
+{
+	/// <summary>
+	/// Provides PostgreSQL dialect
+	/// </summary>
+	public enum PostgreSqlDialect
+	{
+		/// <summary>
+		/// The standard dialect
+		/// </summary>
+		Standard,
+		/// <summary>
+		/// The PostgreSQL 8.1 dialect
+		/// </summary>
+		PostgreSQL81,
+		/// <summary>
+		/// The PostgreSQL 8.2 dialect
+		/// </summary>
+		PostgreSQL82,
+		/// <summary>
+		/// The PostgreSQL 8.3 dialect
+		/// </summary>
+		PostgreSQL83
+	}
+}
\ No newline at end of file