reflection

scala.tools.reflect.ToolBoxError: reflective compilation has failed: cannot initialize the compiler due to java.lang.VerifyError

拈花ヽ惹草 提交于 2020-01-25 10:15:09
问题 I want to pass a scala file containing a case class so my application compiles this case class during run time and start using it. The main reason why I am doing this is because I want to avoid rebuilding my code every time the case class changes. So would be better to pass it as a parameter (in case you are wondered, the operations with this case class are generic so it is not required any rework in the transformations) I was using these post1, post2 and post3 as references. So far my

scala.tools.reflect.ToolBoxError: reflective compilation has failed: cannot initialize the compiler due to java.lang.VerifyError

牧云@^-^@ 提交于 2020-01-25 10:15:07
问题 I want to pass a scala file containing a case class so my application compiles this case class during run time and start using it. The main reason why I am doing this is because I want to avoid rebuilding my code every time the case class changes. So would be better to pass it as a parameter (in case you are wondered, the operations with this case class are generic so it is not required any rework in the transformations) I was using these post1, post2 and post3 as references. So far my

How does InvokeMember know about the HighPart property?

回眸只為那壹抹淺笑 提交于 2020-01-25 08:54:25
问题 I want to use the System.Reflection library and not ActiveDs. I found this code on the web that parses the LargeInteger into HighPart and LowPart. I don't understand it completely, particularly where is the method 'HighPart' and 'LowPart' defined? Is that within the Object class or do I have to define it? Below is the code that parses the largeInteger: de = new DirectoryEntry(curDomain,adUser,adPwd); object largeInteger = de.Properties["maxPwdAge"].Value; System.Type type = largeInteger

How to create the class instances dynamically and call the implementation

亡梦爱人 提交于 2020-01-25 08:02:45
问题 I have various interfaces and I need to be able to call them. Here is the base class: public class MyActorBase<TChild>: ActorBase where TChild : MyActorBase<TChild> { public MyActorBase() { var actors = ChildClass .GetInterfaces() .Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IActorMessageHandler<>)) .Select(x=> (arguments: x.GetGenericArguments(), definition: x)) .ToImmutableList(); if (actors.Any()) { var ty = actors.First(); var obj = Activator.CreateInstance(ty

Determine class type of Generic typed field

旧城冷巷雨未停 提交于 2020-01-25 07:51:05
问题 I am getting NoSuchFieldException for the following piece of code: public class MultipleSorting<T> extends Observable { private SelectItem[] criteria1; private SelectItem[] order1; private SelectItem[] criteria2; private SelectItem[] order2; private SelectItem[] criteria3; private SelectItem[] order3; private T criteriaType; private T selectedCriteria1; private SortOrder selectedOrder1; private T selectedCriteria2; private SortOrder selectedOrder2; private T selectedCriteria3; private

.net core equivalent for GetCustomAttribute on assembly?

自古美人都是妖i 提交于 2020-01-25 06:51:30
问题 I cannot find a .net core equivalent for calling GetCustomAttributes on an assembly object. I see there is CustomAttributes property, but this doesn't return instances of the custom attributes, but rather metadata about the attributes. How can I retrieve the actual attribute instance? 回答1: There's a GetCustomAttributes extension method. Just add using System.Reflection . 来源: https://stackoverflow.com/questions/38263244/net-core-equivalent-for-getcustomattribute-on-assembly

.net core equivalent for GetCustomAttribute on assembly?

给你一囗甜甜゛ 提交于 2020-01-25 06:51:04
问题 I cannot find a .net core equivalent for calling GetCustomAttributes on an assembly object. I see there is CustomAttributes property, but this doesn't return instances of the custom attributes, but rather metadata about the attributes. How can I retrieve the actual attribute instance? 回答1: There's a GetCustomAttributes extension method. Just add using System.Reflection . 来源: https://stackoverflow.com/questions/38263244/net-core-equivalent-for-getcustomattribute-on-assembly

Getting non-public properties of a type via reflection

别等时光非礼了梦想. 提交于 2020-01-25 06:50:13
问题 How can I get non-public properties of a type via reflection? 回答1: Yes, you can. Specify BindingFlags.NonPublic in your call to GetProperties() . class Program { static void Main(string[] args) { var f = new Foo(); foreach (var fi in f.GetType().GetProperties( BindingFlags.NonPublic | BindingFlags.Instance)) { Console.WriteLine(fi); } } } public class Foo { private string Prop { get; set; } } 回答2: Use myType.GetProperties(BindingFlags.NonPublic); try this link for details. 来源: https:/

Get all last descendants of a base type?

↘锁芯ラ 提交于 2020-01-25 06:31:09
问题 This question is an opposite of How to find types that are direct descendants of a base class? If this is the inheritance hierarchy I have, class Base { } class Derived1 : Base { } class Derived1A : Derived1 { } class Derived1B : Derived1 { } class Derived2 : Base { } I need a mechanism to find all the sub types of Base class in a particular assembly which are at the end of the inheritance tree. In other words, SubTypesOf(typeof(Base)) should give me -> { Derived1A, Derived1B, Derived2 } 回答1:

How to get all names and values of any object using reflection and recursion

心不动则不痛 提交于 2020-01-25 05:39:29
问题 I am trying to get a property names and values from an instance of an object. I need it to work for objects that contain nested objects where I can simple pass in the the parent instance. For example, if I have: public class ParentObject { public string ParentName { get; set; } public NestedObject Nested { get; set; } } public class NestedObject { public string NestedName { get; set; } } // in main var parent = new ParentObject(); parent.ParentName = "parent"; parent.Nested = new NestedObject