rama creada apartir de master en j
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@@ -23,35 +23,43 @@ public static class Mapper<T>
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);
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}
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/// <summary>
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/// Maps properties from an <see cref="ExpandoObject"/> source to a strongly-typed destination object using a pre-defined property map.
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/// Property lookups are case-insensitive. Null values are only assigned to reference types or <see cref="Nullable{T}"/> types; assigning null to a non-nullable value type throws. When a source value's type does not match the destination property's type, the value is converted using <see cref="Convert.ToDouble(object)"/>.
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/// </summary>
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/// <param name="source">The source <see cref="ExpandoObject"/> whose key-value pairs will be mapped onto the destination.</param>
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/// <param name="destination">The target object that will receive the mapped property values.</param>
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/// <exception cref="ArgumentNullException">Thrown when <paramref name="source"/> or <paramref name="destination"/> is null.</exception>
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/// <exception cref="ArgumentException">Thrown when a source value is null but the corresponding destination property is a value type that is not <see cref="Nullable{T}"/>.</exception>
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public static void Map(ExpandoObject source, T destination)
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{
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// Might as well take care of null references early.
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if (source == null) throw new ArgumentNullException(nameof(source));
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if (destination == null) throw new ArgumentNullException(nameof(destination));
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// By iterating the KeyValuePair<string, object> of
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// source we can avoid manually searching the keys of
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// source as we see in your original code.
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foreach (var kv in source)
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if (PropertyMap.TryGetValue(kv.Key.ToLower(), out var p))
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{
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var propType = p.PropertyType;
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if (kv.Value == null)
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{
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// Might as well take care of null references early.
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if (source == null) throw new ArgumentNullException(nameof(source));
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if (destination == null) throw new ArgumentNullException(nameof(destination));
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// By iterating the KeyValuePair<string, object> of
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// source we can avoid manually searching the keys of
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// source as we see in your original code.
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foreach (var kv in source)
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if (PropertyMap.TryGetValue(kv.Key.ToLower(), out var p))
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{
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if (propType is { IsByRef: false } && propType.Name != "Nullable`1")
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// Throw if type is a value type
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// but not Nullable<>
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throw new ArgumentException("not nullable");
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var propType = p.PropertyType;
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if (kv.Value == null)
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{
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if (propType is { IsByRef: false } && propType.Name != "Nullable`1")
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// Throw if type is a value type
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// but not Nullable<>
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throw new ArgumentException("not nullable");
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}
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else if (kv.Value.GetType() != propType)
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{
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// You could make this a bit less strict
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// but I don't recommend it.
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p.SetValue(destination, Convert.ToDouble(kv.Value), null);
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}
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p.SetValue(destination, kv.Value, null);
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}
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else if (kv.Value.GetType() != propType)
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{
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// You could make this a bit less strict
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// but I don't recommend it.
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p.SetValue(destination, Convert.ToDouble(kv.Value), null);
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}
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p.SetValue(destination, kv.Value, null);
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}
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}
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}
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}
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