using System;
using System.ComponentModel;
using System.Data;
using System.Xml;
namespace System.Data.XmlClient
{
public class XmlConnection : Component, IDbConnection, ICloneable
{
// Constructors
public XmlConnection()
{
}
public XmlConnection(string connectionString)
{
_connString = connectionString;
}
////////////////////
// IDbConnection
////////////////////
// Public Properties
public string ConnectionString
{
get { return _connString; }
set { _connString = value; }
}
public int ConnectionTimeout
{
get
{
throw new InvalidOperationException("XmlClient Provider does not support this function");
}
}
public string Database
{
get
{
throw new InvalidOperationException("XmlClient Provider does not support this function");
}
}
public ConnectionState State
{
get { return _connState; }
}
// Public Methods
public IDbTransaction BeginTransaction()
{
throw new InvalidOperationException("XmlClient Provider does not support this function");
}
public IDbTransaction BeginTransaction(IsolationLevel lvl)
{
throw new InvalidOperationException("XmlClient Provider does not support this function");
}
public void ChangeDatabase(string databaseName)
{
throw new InvalidOperationException("XmlClient Provider does not support this function");
}
public void Close()
{
_doc.RemoveAll();
_connState = ConnectionState.Closed;
}
public IDbCommand CreateCommand()
{
return new XmlCommand("", this);
}
public void Open()
{
_doc.Load(_connString);
_connState = ConnectionState.Open;
}
////////////////////
// ICloneable
////////////////////
public object Clone()
{
return null;
}
////////////////////
// Internal Data Members
////////////////////
internal ConnectionState _connState = ConnectionState.Closed;
internal string _connString = "";
internal XmlDocument _doc = new XmlDocument();
}
}