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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Dynamic;
using System.Linq;
namespace FluentCassandra
{
/// <summary>
///
/// </summary>
/// <typeparam name="T">A type that impliments <see cref="IFluentColumn"/>.</typeparam>
public abstract class FluentRecord<T> : DynamicObject, IFluentRecord, INotifyPropertyChanged, IEnumerable<IFluentBaseColumn>
where T : IFluentBaseColumn
{
/// <summary>
///
/// </summary>
public FluentRecord()
{
MutationTracker = new FluentMutationTracker(this);
}
/// <summary>
/// The record columns.
/// </summary>
public abstract IList<T> Columns { get; }
/// <summary>
///
/// </summary>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public override IEnumerable<string> GetDynamicMemberNames()
{
return Columns.Select(x => x.ColumnName.GetValue<string>());
}
/// <summary>
///
/// </summary>
/// <param name="binder"></param>
/// <param name="result"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
return TryGetColumn(binder.Name, out result);
}
/// <summary>
///
/// </summary>
/// <param name="binder"></param>
/// <param name="indexes"></param>
/// <param name="result"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result)
{
object index0 = indexes[0];
return TryGetColumn(index0, out result);
}
/// <summary>
///
/// </summary>
/// <param name="name"></param>
/// <param name="result"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public abstract bool TryGetColumn(object name, out object result);
/// <summary>
///
/// </summary>
/// <param name="binder"></param>
/// <param name="value"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public override bool TrySetMember(SetMemberBinder binder, object value)
{
return TrySetColumn(binder.Name, value);
}
/// <summary>
///
/// </summary>
/// <param name="binder"></param>
/// <param name="indexes"></param>
/// <param name="value"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public override bool TrySetIndex(SetIndexBinder binder, object[] indexes, object value)
{
object index0 = indexes[0];
return TrySetColumn(index0, value);
}
/// <summary>
///
/// </summary>
/// <param name="binder"></param>
/// <param name="value"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
public abstract bool TrySetColumn(object name, object value);
#region IEnumerable<IFluentBaseColumn> Members
public IEnumerator<IFluentBaseColumn> GetEnumerator()
{
return Columns.Cast<IFluentBaseColumn>().GetEnumerator();
}
#endregion
#region IEnumerable Members
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
#endregion
#region INotifyPropertyChanged Members
public event PropertyChangedEventHandler PropertyChanged;
protected void OnColumnMutated(MutationType type, IFluentBaseColumn column)
{
MutationTracker.ColumnMutated(type, column);
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(column.ColumnName));
}
#endregion
#region IFluentRecord Members
IEnumerable<IFluentBaseColumn> IFluentRecord.Columns
{
get { return Columns.OfType<IFluentBaseColumn>(); }
}
public IFluentMutationTracker MutationTracker
{
get;
private set;
}
public void RemoveColumn(object name)
{
var col = Columns.FirstOrDefault(c => c.ColumnName == name);
if (col != null)
Columns.Remove(col);
}
protected void ResetMutation()
{
MutationTracker.Clear();
}
protected void ResetMutationAndAddAllColumns()
{
ResetMutation();
foreach (var col in Columns)
MutationTracker.ColumnMutated(MutationType.Added, col);
}
#endregion
}
}
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