/// <summary>
/// Exports the data object property values and child object values
/// to the given data contract object by setting the specified properties
/// of the data contract to the values of the corresponding properties
/// or child objects with the same names.
/// This method can be used to partially export data object values
/// to a data contract object.
/// </summary>
/// <param name="dataContract">The data contract object to export
/// the current data object values to.</param>
/// <param name="props">The data contract object fields to set.</param>
/// <param name="options">Additional options for the operation.</param>
/// <param name="row">The data row context, if any.</param>
protected void ToDataContractProperties(object dataContract, PropertyInfo[] props, object options, DataRow row = null)
{
if (dataContract == null)
{
return;
}
foreach (PropertyInfo pi in props)
{
DataProperty dp = this[pi.Name];
if (dp != null)
{
if (dp.IsValid(true, row))
{
if (dp.IsMultiValued)
{
IList lst = null;
if (dp.GetValue(ValueFormat.Transport, row) is IEnumerable valLst)
{
// create the right type of list and copy the values rather than directly assign
lst = CreateInstance(pi.PropertyType) as IList;
if (lst != null)
{
foreach (object o in valLst)
{
lst.Add(o);
}
}
}
pi.SetValue(dataContract, lst, null);
}
else
{
pi.SetValue(dataContract, dp.GetValue(ValueFormat.Transport, row), null);
}
}
continue;
}
object obj;
try { obj = CreateInstance(pi.PropertyType); }
catch { continue; }
DataObject child = GetChildObject(pi.Name);
if (child != null)
{
child.ToDataContract(obj, options);
}
else
{
foreach (PropertyInfo cpi in pi.PropertyType.GetProperties())
{
DataProperty cdp = this[pi.Name + "_" + cpi.Name];
if (cdp != null && cdp.IsValid(true, row))
{
cpi.SetValue(obj, cdp.GetValue(ValueFormat.Transport, row), null);
}
}
}
pi.SetValue(dataContract, obj, null);
}
}
/// <summary>
/// A filtering function that determines if the value of the specified property in the given row
/// matches the specified criteria value using supplied operator.
/// </summary>
/// <param name="property">The data property of the object to match.</param>
/// <param name="row">The data row to get the value from.</param>
/// <param name="oper">Comparison operator to use.</param>
/// <param name="criteria">The value to compare to.</param>
/// <param name="caseSensitive">True to perform case-sensitive string matching, false otherwise.</param>
/// <returns>True if the property value in the given row matches the specified criteria, false otherwise.</returns>
public virtual bool PropertyValueMatches(DataProperty property, DataRow row, Operator oper, object criteria, bool caseSensitive)
{
ValueFormat format = criteria?.GetType() == typeof(string) ? ValueFormat.DisplayString : ValueFormat.Internal;
object value = property.GetValue(format, row);
criteria = property.ResolveValue(criteria, format);
if (format.IsString() && !caseSensitive)
{
value = value?.ToString()?.ToLower();
criteria = criteria?.ToString()?.ToLower();
}
return(oper.Matches(value, criteria));
}
