public PatchDefinition <TSource, TTarget> Map <TField>(
Func <TSource, TField> sourceValueSelector,
Expression <Func <TTarget, TField> > targetSelector)
{
var patchOperator = new PatchOperator <TSource, TTarget>
{
FieldName = (targetSelector.Body as MemberExpression)?.Member.Name,
IsEqual = (source, target) =>
{
var sourceValue = sourceValueSelector(source);
var targetValue = targetSelector.Compile().Invoke(target);
if (sourceValue == null && targetValue == null)
{
return(true);
}
if (sourceValue == null && targetValue != null || sourceValue != null && targetValue == null)
{
return(false);
}
if (sourceValue.GetType().IsArray)
{
return(ArraysEqual((sourceValue as Array), (targetValue as Array)));
}
return(sourceValue?.Equals(targetValue) ?? false);
},
ApplySourceValueToTarget =
(source, target) =>
{
var value = sourceValueSelector(source);
var memberSelectorExpression = targetSelector.Body as MemberExpression;
var property = memberSelectorExpression.Member as PropertyInfo;
property.SetValue(target, value, null);
}
};
_operators.Add(patchOperator);
return(this);
}
public PatchDefinition <TSource, TTarget> Map <TField>(
Func <TSource, TField> sourceValueSelector,
Expression <Func <TTarget, TField> > targetSelector)
{
var patchOperator = new PatchOperator <TSource, TTarget>()
{
FieldName = (targetSelector.Body as MemberExpression)?.Member.Name,
IsEqual = (source, target) => sourceValueSelector(source)
?.Equals(targetSelector.Compile().Invoke(target)) ?? false,
ApplySourceValueToTarget =
(source, target) =>
{
var value = sourceValueSelector(source);
var memberSelectorExpression = targetSelector.Body as MemberExpression;
var property = memberSelectorExpression.Member as PropertyInfo;
property.SetValue(target, value, null);
}
};
_operators.Add(patchOperator);
return(this);
}