private static DeltaObject GetDeltaObject <T>(DeltaProperty deltaProperty, T originalObject,
T newObject, List <PropertyInfo> propertiesToIgnoreOnDefault, bool ignorePropertiesOnDefault)
{
var propertyInfo = deltaProperty.PropertyInfo;
var newValue = propertyInfo.GetValue(newObject);
if (propertyInfo.IgnoreDeltaBecauseDefault(propertiesToIgnoreOnDefault,
newValue, ignorePropertiesOnDefault))
{
return(null);
}
var originalValue = deltaProperty.PropertyInfo.GetValue(originalObject);
if (deltaProperty.HasDelta(originalValue, newValue))
{
return(new DeltaObject
{
ValueConversionStatus = ValueConversionStatus.Success,
PropertyName = propertyInfo.Name,
PropertyAlias = deltaProperty.Alias,
OriginalValue = originalValue,
NewValue = newValue,
StringifiedOriginalValue = originalValue?.ToString(),
StringifiedNewValue = newValue?.ToString()
});
}
return(null);
}
public static bool HasDelta(this DeltaProperty deltaProperty, object originalValue, object newValue)
{
var comparableOriginalValue = originalValue as IComparable;
var comparableNewValue = newValue as IComparable;
if (comparableOriginalValue == null && comparableNewValue == null)
{
return(false);
}
if (comparableOriginalValue == null && comparableNewValue != null)
{
return(true);
}
if (comparableOriginalValue != null && comparableNewValue == null)
{
return(true);
}
return(comparableOriginalValue.CompareTo(comparableNewValue) != 0);
}
private static DeltaObject GetDeltaObject <T>(DeltaProperty deltaProperty, T originalObject,
JObject jObject, List <PropertyInfo> propertiesToIgnoreOnDefault, bool ignorePropertiesOnDefault)
{
var propertyInfo = deltaProperty.PropertyInfo;
if (!jObject.TryGetValue(propertyInfo.Name,
#if NETSTANDARD1_6
StringComparison.CurrentCultureIgnoreCase,
#else
StringComparison.InvariantCultureIgnoreCase,
#endif
out var newValue))
{
return(null);
}
var originalValue = deltaProperty.PropertyInfo.GetValue(originalObject);
var typeConverter = TypeCache.GetTypeConverter(propertyInfo.PropertyType);
var stringifiedNewValue = newValue.Type != JTokenType.Null ?
newValue.ToString() :
null;
object convertedNewValue;
try
{
convertedNewValue = stringifiedNewValue != null?
typeConverter.ConvertFromString(stringifiedNewValue) :
null;
}
catch (Exception)
{
return(new DeltaObject
{
ValueConversionStatus = ValueConversionStatus.Fail,
PropertyName = propertyInfo.Name,
PropertyAlias = deltaProperty.Alias,
OriginalValue = originalValue,
NewValue = stringifiedNewValue,
StringifiedOriginalValue = originalValue?.ToString(),
StringifiedNewValue = stringifiedNewValue
});
}
if (propertyInfo.IgnoreDeltaBecauseDefault(propertiesToIgnoreOnDefault,
convertedNewValue, ignorePropertiesOnDefault))
{
return(null);
}
if (deltaProperty.HasDelta(originalValue, convertedNewValue))
{
return(new DeltaObject
{
ValueConversionStatus = ValueConversionStatus.Success,
PropertyName = propertyInfo.Name,
PropertyAlias = deltaProperty.Alias,
OriginalValue = originalValue,
NewValue = convertedNewValue,
StringifiedOriginalValue = originalValue?.ToString(),
StringifiedNewValue = convertedNewValue?.ToString()
});
}
return(null);
}
