wasCSharpSQLite – Rev 1

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//
// System.Data.Common.DbParameter.cs
//
// Author:
//   Tim Coleman (tim@timcoleman.com)
//
// Copyright (C) Tim Coleman, 2003
//

//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// 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.
//


using System.Collections.Generic ;
using System.ComponentModel;

namespace System.Data.Common {
        public abstract class DbParameter : IDbDataParameter, IDataParameter
        {
                #region Constructors
                internal static Dictionary<DbType, Type> dbTypeMapping;
                protected DbParameter ()
                {
                }

                #endregion // Constructors

                #region Properties
#if !(WINDOWS_PHONE || NETFX_CORE)
                [Browsable (false)]
#endif
                public abstract DbType DbType { get; set; }

                [DefaultValue (ParameterDirection.Input)]
                public abstract ParameterDirection Direction { get; set; }

                [DefaultValue ("")]
                public abstract string ParameterName { get; set; }
                public abstract int Size { get; set; }
                byte IDbDataParameter.Precision { 
                        get { return  0; }
                        set {} 
                }
                byte IDbDataParameter.Scale { 
                        get { return 0; }
                        set {} 
                }

                [DefaultValue (null)]
                public abstract object Value { get; set; }
#if !(WINDOWS_PHONE || NETFX_CORE)
                [Browsable (false)]
#endif
                [EditorBrowsable (EditorBrowsableState.Never)]
                public abstract bool IsNullable { get; set; }

                [DefaultValue ("")]
                public abstract string SourceColumn { get; set; }

                [DefaultValue (false)]
                [EditorBrowsable (EditorBrowsableState.Advanced)]
                public abstract bool SourceColumnNullMapping { get; set; }

        //[DefaultValue (DataRowVersion.Current)]
        //public abstract DataRowVersion SourceVersion { get; set; }

                #endregion // Properties

                #region Methods
                [EditorBrowsable (EditorBrowsableState.Advanced)]
                public abstract void ResetDbType ();
                
                internal virtual object FrameworkDbType {
                        get {return null;}
                        set {}
                }

        internal protected static Dictionary<DbType, Type> DbTypeMapping
        {
                        get { return dbTypeMapping;}
                        set { dbTypeMapping = value;}
                }
                
                // LAMESPEC: Implementors should populate the dbTypeMapping accordingly
                internal virtual Type SystemType {
                        get {
                                return (Type) dbTypeMapping [DbType];
                        }
                }
                #endregion // Methods
        }
}