Add SybaseASE16Dialect with LIMIT and OFFSET pagination support (#3624)

Co-authored-by: Alex Zaytsev <[email protected]>

Author: vkvn

doc/reference/modules/configuration.xml

@@ -1606,6 +1606,11 @@ in the parameter binding.</programlisting>
                             <entry><literal>NHibernate.Dialect.SybaseASE15Dialect</literal></entry>
                             <entry></entry>
                         </row>
+                        <row>
+                            <entry>Sybase Adaptive Server Enterprise 16</entry>
+                            <entry><literal>NHibernate.Dialect.SybaseASE16Dialect</literal></entry>
+                            <entry></entry>
+                        </row>
                         <row>
                             <entry>Sybase SQL Anywhere 10</entry>
                             <entry><literal>NHibernate.Dialect.SybaseSQLAnywhere10Dialect</literal></entry>

src/NHibernate/Dialect/SybaseASE16Dialect.cs

@@ -0,0 +1,62 @@
+using NHibernate.SqlCommand;
+
+namespace NHibernate.Dialect
+{
+	/// <summary>
+	/// An SQL dialect targeting Sybase Adaptive Server Enterprise (ASE) 16 and higher.
+	/// </summary>
+	/// <remarks>
+	/// The dialect defaults the following configuration properties:
+	/// <list type="table">
+	///	<listheader>
+	///		<term>Property</term>
+	///		<description>Default Value</description>
+	///	</listheader>
+	///	<item>
+	///		<term>connection.driver_class</term>
+	///		<description><see cref="NHibernate.Driver.SybaseAseClientDriver" /></description>
+	///	</item>
+	/// </list>
+	/// </remarks>
+	public class SybaseASE16Dialect : SybaseASE15Dialect
+	{
+		/// <summary>
+		/// ASE 16 supports limit statements, see https://help.sap.com/docs/SAP_ASE/e0d4539d39c34f52ae9ef822c2060077/26d84b4ddae94fed89d4e7c88bc8d1e6.html?locale=en-US
+		/// </summary>
+		/// <returns>true</returns>
+		public override bool SupportsLimit => true;
+
+		/// <inheritdoc />
+		/// <returns>true</returns>
+		public override bool SupportsLimitOffset => true;
+
+		/// <inheritdoc />
+		/// <returns>false</returns>
+		public override bool SupportsVariableLimit => false;
+
+		/// <inheritdoc />
+		public override SqlString GetLimitString(SqlString queryString, SqlString offset, SqlString limit)
+		{
+			if (offset == null && limit == null)
+				return queryString;
+
+			var pagingBuilder = new SqlStringBuilder();
+			pagingBuilder.Add(queryString);
+			pagingBuilder.Add(" rows ");
+
+			if (limit != null)
+			{
+				pagingBuilder.Add(" limit ");
+				pagingBuilder.Add(limit);
+			}
+
+			if (offset != null)
+			{
+				pagingBuilder.Add(" offset ");
+				pagingBuilder.Add(offset);
+			}
+
+			return pagingBuilder.ToSqlString();
+		}
+	}
+}