private bool InitFromBaObject(BaObject schema)
{
if (schema == null)
{
return(false);
}
if (schema == this)
{
return(false); // Can't initialize from itself!
}
foreach (var fld in schema.Fields)
{
// Can't share fields.
var newfld = Add(fld.Name, fld.FieldType, null);
// Setting the DefaultValue can throw an exception
// if the field is required and the value is null.
if (fld.DefaultValue != null)
{
newfld.DefaultValue = fld.DefaultValue;
}
// Validators can be reused. They should be thread-safe.
newfld.Validators.AddRange(fld.Validators);
}
return(true);
}
/// <summary>
/// Creates an instance of BaField
/// </summary>
/// <param name="obj">The object this belongs to.</param>
/// <param name="name">Name of the field.</param>
/// <param name="fieldType">The data type for the field.</param>
/// <param name="dflt">Default value for the field. Used to determine if the field has changed. If null, it is converted to the default value for fieldType.</param>
internal BaField(BaObject obj, string name, Type fieldType, object dflt = null)
{
if (obj == null)
{
throw new ArgumentNullException(nameof(obj));
}
if (name.IsEmpty())
{
throw new ArgumentNullException(nameof(name));
}
if (fieldType == null)
{
throw new ArgumentNullException(nameof(fieldType));
}
Object = obj;
Name = name;
FieldType = fieldType;
if (dflt == null || dflt == DBNull.Value)
{
mDefaultValue = ConvertEx.GetDefaultEmptyValue(fieldType);
}
else
{
VerifyValue(dflt, "default value");
mDefaultValue = dflt;
}
}
public BaDynamicObject(BaObject obj)
{
Object = obj;
}
/// <summary>
/// Creates an instance of BaFieldList.
/// </summary>
internal BaFieldList(BaObject obj)
{
}