[#1533] Hack for the generation of the insert query with MSSQL

Author: DavideD

hibernate-reactive-core/src/main/java/org/hibernate/reactive/id/insert/ReactiveAbstractReturningDelegate.java

@@ -10,6 +10,7 @@
 
 import org.hibernate.dialect.Dialect;
 import org.hibernate.dialect.PostgreSQLDialect;
+import org.hibernate.dialect.SQLServerDialect;
 import org.hibernate.engine.jdbc.mutation.JdbcValueBindings;
 import org.hibernate.engine.jdbc.mutation.group.PreparedStatementDetails;
 import org.hibernate.engine.jdbc.spi.JdbcServices;
@@ -54,6 +55,23 @@ private static String createInsert(PreparedStatementDetails insertStatementDetai
 		if ( instanceOf( dialect, PostgreSQLDialect.class ) ) {
 			return insertStatementDetails.getSqlString() + " returning " + identifierColumnName;
 		}
+		if ( instanceOf( dialect, SQLServerDialect.class ) ) {
+			String sql = insertStatementDetails.getSqlString();
+			int index = sql.lastIndexOf( " returning " + identifierColumnName );
+			// FIXME: this is a hack for HHH-16365
+			if ( index > -1 ) {
+				sql = sql.substring( 0, index );
+			}
+			if ( sql.endsWith( "default values" ) ) {
+				index = sql.indexOf( "default values" );
+				sql = sql.substring( 0, index );
+				sql = sql + "output inserted." + identifierColumnName + " default values";
+			}
+			else {
+				sql = sql.replace( ") values (", ") output inserted." + identifierColumnName + " values (" );
+			}
+			return sql;
+		}
 		return insertStatementDetails.getSqlString();
 	}