Add template db filters in OrmLite

Author: mythz

src/ServiceStack.OrmLite/TemplateDbFilters.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using ServiceStack.Data;
+using ServiceStack.Templates;
+
+namespace ServiceStack.OrmLite
+{
+    public class TemplateDbFilters : TemplateFilter
+    {
+        public IDbConnectionFactory DbFactory { get; set; }
+        T exec<T>(Func<IDbConnection, T> fn)
+        {
+            using (var db = DbFactory.Open())
+            {
+                return fn(db);
+            }
+        }
+
+        public object dbSelect(string sql) => exec(db => db.Select<Dictionary<string, object>>(sql));
+        public object dbSelect(string sql, Dictionary<string, object> args) => exec(db => db.Select<Dictionary<string, object>>(sql, args));
+        public object dbSingle(string sql) => exec(db => db.Single<Dictionary<string, object>>(sql));
+        public object dbSingle(string sql, Dictionary<string, object> args) => exec(db => db.Single<Dictionary<string, object>>(sql, args));
+        public object dbScalar(string sql) => exec(db => db.Scalar<object>(sql));
+        public object dbScalar(string sql, Dictionary<string, object> args) => exec(db => db.Scalar<object>(sql, args));
+        public int dbExec(string sql, Dictionary<string, object> args) => exec(db => db.ExecuteSql(sql, args));
+
+        public string sqlQuote(string name) => OrmLiteConfig.DialectProvider.GetQuotedName(name);
+        public string sqlConcat(IEnumerable<object> values) => OrmLiteConfig.DialectProvider.SqlConcat(values);
+        public string sqlCurrency(string fieldOrValue) => OrmLiteConfig.DialectProvider.SqlCurrency(fieldOrValue);
+        public string sqlCurrency(string fieldOrValue, string symbol) => OrmLiteConfig.DialectProvider.SqlCurrency(fieldOrValue, symbol);
+
+        public string sqlBool(bool value) => OrmLiteConfig.DialectProvider.SqlBool(value);
+        public string sqlTrue() => OrmLiteConfig.DialectProvider.SqlBool(true);
+        public string sqlFalse() => OrmLiteConfig.DialectProvider.SqlBool(false);
+        public string sqlLimit(int? offset, int? limit) => padCondition(OrmLiteConfig.DialectProvider.SqlLimit(offset, limit));
+        public string sqlLimit(int? limit) => padCondition(OrmLiteConfig.DialectProvider.SqlLimit(null, limit));
+        public string sqlSkip(int? offset) => padCondition(OrmLiteConfig.DialectProvider.SqlLimit(offset, null));
+        public string sqlTake(int? limit) => padCondition(OrmLiteConfig.DialectProvider.SqlLimit(null, limit));
+        private string padCondition(string text) => string.IsNullOrEmpty(text) ? "" : " " + text;
+    }
+}