/// <summary>
/// Constructor that allows to create a object,
/// as a "shallow" copy of another object.
/// It maintains, the two-step initialization,
/// and two step finalization, technique,
/// with virtual constructors & destructors.
/// </summary>
/// <param name="Source">Source object</param>
/// <returns>Error Code, <code>0<code> if succesful.</returns>
public virtual Int64 CreateCopy(CloneableObjectClass Source)
{
Int64 Result = 0;
// --> execute inherited constructor
Result = base.Create();
// --> allocate fields
if (Result == 0)
{
// ...
} // if (Result == 0)
// --> update status
F_CloneableObjectClass_IsReady = true;
// --> special case
this.AssignFrom(Source);
return Result;
}
/// <summary>
/// When an object of this class is instantiated,
/// creates & returns a "Shallow" copy of itself.
/// </summary>
/// <returns>"Shallow" copy of the object.</returns>
public virtual CloneableObjectClass Clone()
{
CloneableObjectClass Result = new CloneableObjectClass();
Result.Create();
Result.AssignFrom(this);
return Result;
}
/// <summary>
/// Copies all value properties from the current object,
/// to <code>ADest</code>.
/// </summary>
/// <param name="ADest"></param>
public void AssignTo(CloneableObjectClass ADest)
{
ADest.AssignFrom(this);
}
// ...
/// <summary>
/// Copies all value properties from <code>ASource</code>,
/// to the current object.
/// </summary>
/// <param name="ASource">Object to be used as a template</param>
public virtual void AssignFrom(CloneableObjectClass ASource)
{
this.DoNothing();
}
// ...
/// <summary>
/// Copies all value properties from <code>ASource</code>,
/// to the current object.
/// </summary>
/// <param name="ASource">Object to be used as a template</param>
public override void AssignFrom(CloneableObjectClass ASource)
{
if (this.IsReady())
{
if (ASource != null)
{
FilterListClass Data = (ASource as FilterListClass);
foreach (FilterClass EachSourceFilter in Data.InternalList)
{
FilterClass EachDestFilter =
(FilterClass)EachSourceFilter.Clone();
this.Add(EachDestFilter);
} // foreach
} // if (ASource != null)
} // if (this.IsReady())
}
// ...
/// <summary>
/// Copies all value properties from <code>ASource</code>,
/// to the current object.
/// </summary>
/// <param name="ASource">Object to be used as a template</param>
public override void AssignFrom(CloneableObjectClass ASource)
{
if (this.IsReady())
{
if (ASource != null)
{
FilterClass Data = (ASource as FilterClass);
this.ConcatOperator = Data.ConcatOperator;
this.Key = Data.Key;
this.Operation = Data.Operation;
this.Value = Data.Value;
this.IsExpression = Data.IsExpression;
} // if (ASource != null)
} // if (this.IsReady())
}
