// Copyright 2006 - Morten Nielsen (www.iter.dk)

//

// This file is part of SharpMap.

// SharpMap is free software; you can redistribute it and/or modify

// it under the terms of the GNU Lesser General Public License as published by

// the Free Software Foundation; either version 2 of the License, or

// (at your option) any later version.

//

// SharpMap is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public License

// along with SharpMap; if not, write to the Free Software

// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

using System;

using System.Data.Common;

using System.Reflection;

namespace SharpMap.Data.Providers

{

/// <summary>

/// The OleDbPoint provider is used for rendering point data from an OleDb compatible data source.

/// </summary>

/// <remarks>

/// <para>The data source will need to have two double-type columns, xColumn and yColumn that contains the coordinates of the point,

/// and an integer-type column containing a unique identifier for each row.</para>

/// <para>To get good performance, make sure you have applied indexes on ID, xColumn and yColumns in your data source table.</para>

/// </remarks>

[Serializable]

public class OleDbPoint : DbPoint

{

/// <summary>

/// The OleDb provider factory

/// </summary>

private static readonly DbProviderFactory OleDbFactory;

/// <summary>

/// Static constructor to get a value for <see cref="OleDbFactory"/>

/// </summary>

static OleDbPoint()

{

try

{

const string aqn = "System.Data.OleDb.OleDbFactory, System.Data, Version = 4.0.0.0, Culture = neutral, PublicKeyToken = b77a5c561934e089";

var type = Type.GetType(aqn, true, false);

var fld = type.GetField("Instance", BindingFlags.Public | BindingFlags.Static);

OleDbFactory = (DbProviderFactory)fld.GetValue(null);

}

catch (Exception e)

{

throw new TypeInitializationException("SharpMap.Data.Providers.OleDbPoint", e);

}

}

/// <summary>

/// Initializes a new instance of the OleDbPoint provider

/// </summary>

/// <param name="connectionString">The connection string</param>

/// <param name="tableName">The name of the table</param>

/// <param name="oidColumnName">The name of the object id column</param>

/// <param name="xColumn">The name of the x-ordinates column</param>

/// <param name="yColumn">The name of the y-ordinates column</param>

public OleDbPoint(string connectionString, string tableName, string oidColumnName, string xColumn, string yColumn)

: base(OleDbFactory, connectionString, tableName, oidColumnName, xColumn, yColumn)

{

}

}

}