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Fix to DbContextExtensions #128

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Fix to DbContextExtensions #128

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bdbfe43
Added static method MethodNotAllowed in JsonApiException
jakubozga Dec 12, 2016
85ab7a4
Fixed issue with exceptions being thrown for derivied entities
jakubozga Jan 13, 2017
64ad71d
Merge branch 'master' of https://github.com/JSONAPIdotNET/JSONAPI.NET
jakubozga Jan 13, 2017
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34 changes: 16 additions & 18 deletions JSONAPI.EntityFramework/DbContextExtensions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,28 +21,27 @@ public static class DbContextExtensions
/// <returns></returns>
public static IEnumerable<string> GetKeyNames(this DbContext dbContext, Type type)
{
if (dbContext == null) throw new ArgumentNullException("dbContext");
if (type == null) throw new ArgumentNullException("type");
if (dbContext == null) throw new ArgumentNullException(nameof(dbContext));
if (type == null) throw new ArgumentNullException(nameof(type));

var originalType = type;

while (type != null)
var baseEntityType = type;
while (baseEntityType.BaseType != typeof(Object))
{
var openMethod = typeof(DbContextExtensions).GetMethod("GetKeyNamesFromGeneric", BindingFlags.Public | BindingFlags.Static);
var method = openMethod.MakeGenericMethod(type);

try
{
return (IEnumerable<string>) method.Invoke(null, new object[] {dbContext});
}
catch (TargetInvocationException)
{
}
baseEntityType = baseEntityType.BaseType;
}

var openMethod = typeof(DbContextExtensions).GetMethod("GetKeyNamesFromGeneric", BindingFlags.Public | BindingFlags.Static);
var method = openMethod.MakeGenericMethod(baseEntityType);

type = type.BaseType;
try
{
return (IEnumerable<string>) method.Invoke(null, new object[] {dbContext});
}
catch (TargetInvocationException)
{
}

throw new Exception(string.Format("Failed to identify the key names for {0} or any of its parent classes.", originalType.Name));
throw new Exception(string.Format("Failed to identify the key names for {0} or any of its parent classes.", type.Name));
}

/// <summary>
Expand All @@ -59,7 +58,6 @@ public static IEnumerable<string> GetKeyNamesFromGeneric<T>(this DbContext dbCon
try
{
objectSet = objectContext.CreateObjectSet<T>();

}
catch (InvalidOperationException e)
{
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