MasterDetails.cs :  » Persistence-Frameworks » FileHelpers-Library » FileHelpers » MasterDetail » C# / CSharp Open Source

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C# / CSharp Open Source » Persistence Frameworks » FileHelpers Library 
FileHelpers Library » FileHelpers » MasterDetail » MasterDetails.cs
#undef GENERICS
//#define GENERICS
//#if NET_2_0

using System.ComponentModel;
using System.Diagnostics;
//using System.ComponentModel.TypeConverter;

namespace FileHelpers.MasterDetail{
  /// <summary>
  /// <para>This class contains information of a Master record an their Details records.</para>
  /// <para>This class is used for the Read and Write operations of the <see cref="MasterDetailEngine"/>.</para>
  /// </summary>
#if ! GENERICS
#if NET_2_0
    [DebuggerDisplay("Master: {Master.ToString()} - Details: {Details.Length}")]
#endif
    [TypeConverter(typeof(ExpandableObjectConverter))]
  public class MasterDetails
  {

    /// <summary>Create an empty instance.</summary>
    public MasterDetails()
    {
      mDetails = mEmpty.mDetails;
    }

    /// <summary>Create a new instance with the specified values.</summary>
    /// <param name="master">The master record.</param>
    /// <param name="details">The details record.</param>
    public MasterDetails(object master, object[] details)
    {
      mMaster = master;
      mDetails = details;
    }
    
    #if NET_2_0
    [DebuggerBrowsable(DebuggerBrowsableState.Never)] 
    #endif
    private static MasterDetails mEmpty = new MasterDetails(null, new object[] {});

    /// <summary>Returns a canonical empty MasterDetail object.</summary>
    public static MasterDetails Empty
    {
      get { return mEmpty; }
    }

    #if NET_2_0
    [DebuggerBrowsable(DebuggerBrowsableState.Never)] 
    #endif
    internal object mMaster;

    /// <summary>The Master record.</summary>
    public object Master
    {
      get { return mMaster; }
      set { mMaster = value; }
    }

    #if NET_2_0
    [DebuggerBrowsable(DebuggerBrowsableState.Never)] 
    #endif
    internal object[] mDetails;

    /// <summary>An Array with the Detail records.</summary>
    [TypeConverter(typeof(ArrayConverter))]
    public object[] Details
    {
      get { return mDetails; }
      set { mDetails = value; }
    }

#else
  public class MasterDetails<M,D>
        where M : class
        where D : class
  {

    /// <summary>Create an empty instance.</summary>
    public MasterDetails()
    {
      mDetails = mEmpty.mDetails;
    }

    /// <summary>Create a new instance with the specified values.</summary>
    /// <param name="master">The master record.</param>
    /// <param name="details">The details record.</param>
    public MasterDetails(M master, D[] details)
    {
      mMaster = master;
      mDetails = details;
    }

    private static MasterDetails<M,D> mEmpty = new MasterDetails<M,D>(null, new D[] {});

    /// <summary>Returns a canonical empty MasterDetail object.</summary>
    public static MasterDetails<M,D> Empty
    {
      get { return mEmpty; }
    }

    internal M mMaster;

    /// <summary>The Master record.</summary>
    public M Master
    {
      get { return mMaster; }
      set { mMaster = value; }
    }

    internal D[] mDetails;

    /// <summary>An Array with the Detail records.</summary>
    public D[] Details
    {
      get { return mDetails; }
      set { mDetails = value; }
    }

#endif

  }
}

//#endif
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