OciSessionHandle.cs :  » 2.6.4-mono-.net-core » System.Data » System » Data » OracleClient » Oci » C# / CSharp Open Source

//
// OciSessionHandle.cs
//
// Part of managed C#/.NET library System.Data.OracleClient.dll
//
// Part of the Mono class libraries at
// mcs/class/System.Data.OracleClient/System.Data.OracleClient.Oci
//
// Assembly: System.Data.OracleClient.dll
// Namespace: System.Data.OracleClient.Oci
//
// Author:
//     Tim Coleman <tim@timcoleman.com>
//     Daniel Morgan <monodanmorg@yahoo.com>
//
// Copyright (C) Tim Coleman, 2003
// Copyright (C) Daniel Morgan, 2009
//

//#define ORACLE_DATA_ACCESS

using System;
using System.Runtime.InteropServices;

namespace System.Data.OracleClient.Oci{
  internal sealed class OciSessionHandle : OciHandle, IDisposable
  {
    #region Fields

    OciErrorHandle errorHandle;
    OciServiceHandle serviceHandle;
    bool begun = false;
    bool disposed = false;
    string username;
    string password;
    //OciCredentialType credentialType;

    #endregion // Fields

    #region Constructors

    public OciSessionHandle (OciHandle parent, IntPtr handle)
      : base (OciHandleType.Session, parent, handle)
    {
    }

    #endregion // Constructors

    #region Properties

    public OciServiceHandle Service {
      get { return serviceHandle; }
      set { serviceHandle = value; }
    }

    internal string Username {
      get { return username; }
      set { username = value; }
    }

    internal string Password {
      get { return String.Empty; }
      set { password = value; }
    }

    #endregion // Properties

    #region Methods

    internal bool SetCredentialAttributes (OciErrorHandle error)
    {
      errorHandle = error;

      int status;

      status = OciCalls.OCIAttrSetString (this,
        OciHandleType.Session,
        username,
        (uint) username.Length,
        OciAttributeType.Username,
        errorHandle);

      if (status != 0)
        return false;

      status = OciCalls.OCIAttrSetString (this,
        OciHandleType.Session,
        password,
        (uint) password.Length,
        OciAttributeType.Password,
        errorHandle);

      if (status != 0)
        return false;
      
      return true;
    }

    public bool BeginSession (OciCredentialType credentialType, OciSessionMode mode, OciErrorHandle error)
    {
      errorHandle = error;

      int status;

      if (credentialType == OciCredentialType.RDBMS) {
        if (!SetCredentialAttributes (errorHandle))
          return false;
      }

      status = OciCalls.OCISessionBegin (Service,
            errorHandle,
            Handle,
            credentialType,
            mode);

      if (status != 0)
        return false;

      begun = true;

      return true;
    }

    public void EndSession (OciErrorHandle error)
    {
      if (!begun)
        return;
      OciCalls.OCISessionEnd (Service, error, this, 0);
      begun = false;
    }

    protected override void Dispose (bool disposing)
    {
      if (!disposed) {
        try {
          //EndSession (errorHandle);
          disposed = false;
        } finally {
          base.Dispose (disposing);
        }
      }
    }

    #endregion // Methods
  }
}