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SqliteFunctionAttribute.cs

//
// Derived from
// Mono.Data.Sqlite.SQLiteFunctionAttribute.cs
//
// Author(s):
//   Robert Simpson (robert@blackcastlesoft.com)
//
// Adapted and modified for the Mono Project by
//   Marek Habersack (grendello@gmail.com)
//
//
// Copyright (C) 2006 Novell, Inc (http://www.novell.com)
// Copyright (C) 2007 Marek Habersack
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

/********************************************************
 * ADO.NET 2.0 Data Provider for Sqlite Version 3.X
 * Written by Robert Simpson (robert@blackcastlesoft.com)
 *
 * Released to the public domain, use at your own risk!
 ********************************************************/

using System;
using System.Runtime.InteropServices;

namespace Hyena.Data.Sqlite
{
    /// <summary>
    /// A simple custom attribute to enable us to easily find user-defined functions in
    /// the loaded assemblies and initialize them in Sqlite as connections are made.
    /// </summary>
    [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = true)]
00052     public class SqliteFunctionAttribute : Attribute
    {
        internal Type        _instanceType;

        /// <summary>
        /// Default constructor, initializes the internal variables for the function.
        /// </summary>
00059         public SqliteFunctionAttribute()
        {
            Name = "";
            Arguments = -1;
            FuncType = FunctionType.Scalar;
            }

        /// <summary>
        /// The function's name as it will be used in Sqlite command text.
        /// </summary>
00069         public string Name { get; set; }

        /// <summary>
        /// The number of arguments this function expects.  -1 if the number of arguments is variable.
        /// </summary>
00074         public int Arguments { get; set; }

        /// <summary>
        /// The type of function this implementation will be.
        /// </summary>
00079         public FunctionType FuncType { get; set; }
    }
}

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