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Update the database by adding a new JSON Column
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| using System.Reflection; | ||
| using System.Text.Json; | ||
|
|
||
| namespace OData.WebApi.Extensions | ||
| { | ||
| public static class MethodInfoHelpers | ||
| { | ||
| private static MethodInfo _JsonDeserializeMi; | ||
| private static MethodInfo _EnumerableSelectMi; | ||
| private static MethodInfo _EnumerableLongCountMi; | ||
|
|
||
| public static MethodInfo JsonDeserializeMi | ||
| { | ||
| get | ||
| { | ||
| if (_JsonDeserializeMi == null) | ||
| { | ||
| _JsonDeserializeMi = GetJsonSerializer(); | ||
| } | ||
|
|
||
| return _JsonDeserializeMi; | ||
| } | ||
| } | ||
|
|
||
| public static MethodInfo EnumerableSelectMi | ||
| { | ||
| get | ||
| { | ||
| if (_EnumerableSelectMi == null) | ||
| { | ||
| _EnumerableSelectMi = GetEnumerableSelect(); | ||
| } | ||
|
|
||
| return _EnumerableSelectMi; | ||
| } | ||
| } | ||
|
|
||
| public static MethodInfo EnumerableLongCountMi | ||
| { | ||
| get | ||
| { | ||
| if (_EnumerableLongCountMi == null) | ||
| { | ||
| _EnumerableLongCountMi = GetLongCountMethodInfo(); | ||
| } | ||
|
|
||
| return _EnumerableLongCountMi; | ||
| } | ||
| } | ||
|
|
||
| private static MethodInfo GetEnumerableSelect() | ||
| { | ||
| // public static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector); | ||
| var selects = typeof(Enumerable).GetMethods().Where(x => x.Name == "Select"); | ||
| foreach (var select in selects) | ||
| { | ||
| ParameterInfo[] parameters = select.GetParameters(); | ||
| if (parameters.Length != 2) | ||
| { | ||
| continue; | ||
| } | ||
|
|
||
| if (parameters[1].ParameterType.GetGenericArguments().Length == 2) | ||
| { | ||
| return select; | ||
| } | ||
| } | ||
|
|
||
| throw new NotSupportedException(); | ||
| } | ||
|
|
||
| private static MethodInfo GetJsonSerializer() | ||
| { | ||
| // public static TValue? Deserialize<TValue>(string json, JsonSerializerOptions? options = null); | ||
| var deses = typeof(JsonSerializer).GetMethods().Where(x => x.Name == "Deserialize"); | ||
|
|
||
| foreach (var deserializeMethodInfo in deses) | ||
| { | ||
| ParameterInfo[] parameters = deserializeMethodInfo.GetParameters(); | ||
| if (parameters.Length != 2) | ||
| { | ||
| continue; | ||
| } | ||
|
|
||
| if (parameters[0].ParameterType == typeof(string) && parameters[1].ParameterType == typeof(JsonSerializerOptions)) | ||
| { | ||
| return deserializeMethodInfo; | ||
| } | ||
| } | ||
|
|
||
| throw new NotSupportedException(); | ||
| } | ||
|
|
||
| private static MethodInfo GetLongCountMethodInfo() | ||
| { | ||
| var longCountMethods = typeof(Enumerable).GetMethods().Where(x => x.Name == "LongCount"); | ||
|
|
||
| return longCountMethods.First(x => x.GetParameters().Length == 1); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| namespace OData.WebApi.Extensions | ||
| { | ||
| public static class TypeHelpers | ||
| { | ||
| public static bool IsCollection(this Type clrType, out Type elementType) | ||
| { | ||
| elementType = clrType; | ||
| if (clrType == null) | ||
| { | ||
| return false; | ||
| } | ||
|
|
||
| // see if this type should be ignored. | ||
| if (clrType == typeof(string)) | ||
| { | ||
| return false; | ||
| } | ||
|
|
||
| Type collectionInterface | ||
| = clrType.GetInterfaces() | ||
| .Union(new[] { clrType }) | ||
| .FirstOrDefault( | ||
| t => t.IsGenericType | ||
| && t.GetGenericTypeDefinition() == typeof(IEnumerable<>)); | ||
|
|
||
| if (collectionInterface != null) | ||
| { | ||
| elementType = collectionInterface.GetGenericArguments().Single(); | ||
| return true; | ||
| } | ||
|
|
||
| return false; | ||
| } | ||
| } | ||
| } |
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