External Object DynamicCall

dotnet/src/dotnetcore/GxClasses.Web/GxClasses.Web.csproj

@@ -11,6 +11,7 @@
 
   <ItemGroup>
     <Compile Include="..\..\dotnetframework\GxClasses\Domain\GXGeolocation.cs" Link="Domain\GXGeolocation.cs" />
+    <Compile Include="..\..\dotnetframework\GxClasses\Helpers\GxDynamicCall.cs" Link="Helpers\GxDynamicCall.cs" />
     <Compile Include="..\..\dotnetframework\GxClasses\Middleware\GXHttp.cs" Link="Middleware\GXHttp.cs" />
     <Compile Include="..\..\dotnetframework\GxClasses\Middleware\GXHttpServices.cs" Link="Middleware\GXHttpServices.cs" />
     <Compile Include="..\..\dotnetframework\GxClasses\Domain\GXRuntime.cs" Link="Domain\GXRuntime.cs" />

dotnet/src/dotnetframework/GxClasses/Helpers/GxDynamicCall.cs

@@ -0,0 +1,193 @@
+using GeneXus.Application;
+using GeneXus.Metadata;
+using GeneXus.Utils;
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+
+namespace GeneXus.DynamicCall
+{
+    public class GxDynamicCall
+    {
+		private const string defaultMethod = "execute";
+		private Assembly _assembly;
+		private GxDynCallProperties _properties;
+		private object _object;
+		public string ObjectName { get; set; }
+		public GxDynCallProperties Properties     
+		{
+			get => _properties;
+			set
+			{
+				_properties = Properties;
+			}
+		}
+
+		public GxDynamicCall()
+		{
+			_assembly= null;
+			_properties = new GxDynCallProperties();
+			_object = null;
+		}
+
+		private void VerifyDefaultProperties() {
+			_properties.NameSpace = string.IsNullOrEmpty(_properties.NameSpace) ? "GeneXus.Programs" : _properties.NameSpace;
+
+			if (_assembly is null)
+			{
+				if (string.IsNullOrEmpty(_properties.AssemblyName))
+				{
+					_assembly = Assembly.GetCallingAssembly();
+				}
+				else
+				{
+					try
+					{
+						_assembly = Assembly.LoadFrom(_properties.AssemblyName);
+					}
+					catch
+					{
+						throw;
+					}
+				}
+			}
+		}
+
+		public void Execute(ref IList<object> parameters, out IList<SdtMessages_Message> errors)
+		{
+			Create(null, out errors);
+			if (errors.Count == 0)
+			{
+				GxDynCallMethodConf methodConf = new GxDynCallMethodConf();
+				Execute(ref parameters, methodConf, out errors);
+			}
+		}
+
+		public void Create( IList<object> constructParms, out IList<SdtMessages_Message> errors)
+		{
+			errors = new GXBaseCollection<SdtMessages_Message>();
+			string objectNameToInvoke;
+			try
+			{
+				VerifyDefaultProperties();
+				if (constructParms is null)
+				{
+					objectNameToInvoke = ObjectName;
+				}
+				else
+				{
+					objectNameToInvoke = _properties.ExternalName;
+				}
+				try
+				{
+					Type objType = ClassLoader.FindType(objectNameToInvoke, _properties.NameSpace, objectNameToInvoke.ToLower().Trim(), _assembly);
+					object[] constructorParameters;
+					if (constructParms != null && constructParms.Count > 0)
+					{
+						constructorParameters = new object[constructParms.Count];
+						constructParms.CopyTo(constructorParameters, 0);
+					}
+					else
+					{
+						constructorParameters = new object[] { new GxContext() };
+					}
+					_object = Activator.CreateInstance(objType, constructorParameters);
+				}
+				catch (Exception e)
+				{
+					GXUtil.ErrorToMessages("CreateInstance Error", e.Message, (GXBaseCollection<SdtMessages_Message>) errors);
+				}
+			}
+			catch (Exception e)
+			{
+				GXUtil.ErrorToMessages("VerifyProperties Error", e.Message, (GXBaseCollection<SdtMessages_Message>)errors);
+			}
+		}
+		public object Execute(ref IList<object> parameters, GxDynCallMethodConf methodconfiguration , out IList<SdtMessages_Message> errors)
+		{
+			object result;
+			errors = new GXBaseCollection<SdtMessages_Message>();
+			IList<object> outParms= new List<object>();
+
+			string methodName = methodconfiguration.MethodName; 
+			bool isStatic = methodconfiguration.IsStatic;
+
+			if (!isStatic)
+			{
+				if (_object != null)
+				{
+					try
+					{
+						outParms = ReflectionHelper.CallMethod(_object, (string.IsNullOrEmpty(methodName) ? defaultMethod : methodName), parameters);
+					}
+					catch (Exception e)
+					{
+						GXUtil.ErrorToMessages("CallMethod Error", e.Message, (GXBaseCollection<SdtMessages_Message>)errors);
+					}
+				}
+				else
+				{
+					GXUtil.ErrorToMessages("NullInstance Error", "You must invoke create method before executing a non-static one", (GXBaseCollection<SdtMessages_Message>)errors);
+				}
+			}
+			else
+			{
+				VerifyDefaultProperties();
+				Type objType = ClassLoader.FindType(_properties.ExternalName, _properties.NameSpace, _properties.ExternalName.ToLower().Trim(), _assembly);
+				outParms = ReflectionHelper.CallMethod(objType, (string.IsNullOrEmpty(methodName) ? defaultMethod : methodName), parameters, isStatic);
+			}
+			if (outParms.Count > parameters.Count)
+			{
+				result = outParms[parameters.Count];
+				outParms.RemoveAt(parameters.Count);
+
+			}
+			else
+			{
+				result = null;
+			}
+			parameters = outParms;
+			return result;
+		}
+
+	}
+	public class GxDynCallMethodConf
+	{
+		public bool IsStatic
+		{
+			get; set;
+		}
+		public string MethodName
+		{
+			get; set;
+		}
+
+		public GxDynCallMethodConf()
+		{
+			IsStatic = false;
+			MethodName = "execute";
+		}
+
+	}
+
+	public class GxDynCallProperties
+	{
+		public string ExternalName
+		{
+			get;
+			set;
+		}
+		public string AssemblyName
+		{
+			get;
+			set;
+		}
+		public string NameSpace
+		{
+			get;
+			set;
+		}
+
+	}
+}
+

dotnet/src/dotnetframework/GxClasses/Services/ReflectionHelper.cs

@@ -49,12 +49,36 @@ public static Dictionary<string, object> CallMethod(object instance, String meth
 			MethodInfo methodInfo = instance.GetType().GetMethod(methodName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.IgnoreCase);
 			return CallMethodImpl(instance, methodInfo, parameters, context);
 		}
+		public static IList<object> CallMethod(object instanceOrType, String methodName, IList<object> parameters, bool isStatic = false, IGxContext context = null)
+		{
+			MethodInfo methodInfo;
+			object instance = null;
+			if (isStatic)
+			{
+				methodInfo = ((Type)instanceOrType).GetMethod(methodName, BindingFlags.Static | BindingFlags.Public | BindingFlags.IgnoreCase);
+			}
+			else
+			{
+
+				methodInfo = instanceOrType.GetType().GetMethod(methodName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.IgnoreCase);
+				instance = instanceOrType;
+			}
+			return CallMethodImpl(instance, methodInfo, parameters, context);
+		}
 		static Dictionary<string, object> CallMethodImpl(object instance, MethodInfo methodInfo, IDictionary<string, object> parameters, IGxContext context)
 		{
 			object[] parametersForInvocation = ProcessParametersForInvoke(methodInfo, parameters, context);
 			object returnParm = methodInfo.Invoke(instance, parametersForInvocation);
 			return ProcessParametersAfterInvoke(methodInfo, parametersForInvocation, returnParm);
 		}
+		static IList<object> CallMethodImpl(object instance, MethodInfo methodInfo, IList<object> parameters, IGxContext context)
+		{
+			object[] parametersForInvocation = ProcessParametersForInvoke(methodInfo, parameters, context);
+			object returnParm = methodInfo.Invoke(instance, parametersForInvocation);
+			IList<object> parametersAfterInvoke = parametersForInvocation.ToList<object>();
+			parametersAfterInvoke.Add(returnParm);
+			return parametersAfterInvoke;
+		}
 		public static bool MethodHasInputParameters(object instance, String methodName)
 		{
 			MethodInfo methodInfo = instance.GetType().GetMethod(methodName);
@@ -107,16 +131,16 @@ public static Dictionary<string, object> GetWrappedParameter(object instance, St
 
 		private static object ConvertSingleJsonItem(object value, Type newType, IGxContext context)
 		{
-			if (value!= null && value.GetType() == newType)
+			if (value != null && value.GetType() == newType)
 			{
 				return value;
 			}
 			else if (typeof(IGxJSONAble).IsAssignableFrom(newType))
 			{
 				object TObject;
-				if (typeof(GxSilentTrnSdt).IsAssignableFrom(newType) && context!=null)
+				if (typeof(GxSilentTrnSdt).IsAssignableFrom(newType) && context != null)
 				{
-					TObject = Activator.CreateInstance(newType, new object[] { context});
+					TObject = Activator.CreateInstance(newType, new object[] { context });
 				}
 				else
 				{
@@ -155,9 +179,9 @@ private static object ConvertSingleJsonItem(object value, Type newType, IGxConte
 			}
 		}
 
-		private static object ConvertStringToNewNonNullableType(object value, Type newType, IGxContext context=null)
+		private static object ConvertStringToNewNonNullableType(object value, Type newType, IGxContext context = null)
 		{
-			
+
 			if (newType.IsArray)
 			{
 				// For comma separated list
@@ -174,7 +198,7 @@ private static object ConvertStringToNewNonNullableType(object value, Type newTy
 			return ConvertSingleJsonItem(value, newType, context);
 		}
 
-		internal static object ConvertStringToNewType(object value, Type newType, IGxContext context=null)
+		internal static object ConvertStringToNewType(object value, Type newType, IGxContext context = null)
 		{
 			// If it's not a nullable type, just pass through the parameters to Convert.ChangeType
 			if (newType.GetTypeInfo().IsGenericType && newType.GetGenericTypeDefinition() != null && newType.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
@@ -191,9 +215,9 @@ internal static object ConvertStringToNewType(object value, Type newType, IGxCon
 		public static Dictionary<string, string> ParametersFormat(object instance, string methodName)
 		{
 			MethodInfo methodInfo = instance.GetType().GetMethod(methodName);
-						
+
 			Dictionary<string, string> formatList = new Dictionary<string, string>();
-			var methodParameters = methodInfo.GetParameters();			
+			var methodParameters = methodInfo.GetParameters();
 			foreach (var methodParameter in methodParameters)
 			{
 				var gxParameterName = GxParameterName(methodParameter.Name);
@@ -210,6 +234,7 @@ public static Dictionary<string, string> ParametersFormat(object instance, strin
 			return formatList;
 		}
 
+
 		private static Dictionary<string, object> ProcessParametersAfterInvoke(MethodInfo methodInfo, object[] parametersForInvocation, object returnParm)
 		{
 			Dictionary<string, object> outputParameters = new Dictionary<string, object>();
@@ -230,22 +255,22 @@ private static Dictionary<string, object> ProcessParametersAfterInvoke(MethodInf
 		}
 
 
-		internal static object[] ProcessParametersForInvoke(MethodInfo methodInfo, IDictionary<string, object> parameters, IGxContext context=null)
+		internal static object[] ProcessParametersForInvoke(MethodInfo methodInfo, IDictionary<string, object> parameters, IGxContext context = null)
 		{
 			var methodParameters = methodInfo.GetParameters();
 			object[] parametersForInvocation = new object[methodParameters.Length];
 			var idx = 0;
 			foreach (var methodParameter in methodParameters)
 			{
 				object value;
-				
+
 				var gxParameterName = GxParameterName(methodParameter.Name).ToLower();
 				Type parmType = methodParameter.ParameterType;
 				if (IsByRefParameter(methodParameter))
 				{
 					parmType = parmType.GetElementType();
 				}
-				if (parameters!=null && parameters.TryGetValue(gxParameterName, out value))
+				if (parameters != null && parameters.TryGetValue(gxParameterName, out value))
 				{
 					if (value == null || JSONHelper.IsJsonNull(value))
 					{
@@ -266,6 +291,41 @@ internal static object[] ProcessParametersForInvoke(MethodInfo methodInfo, IDict
 			}
 			return parametersForInvocation;
 		}
+
+		internal static object[] ProcessParametersForInvoke(MethodInfo methodInfo, IList<object> parameters, IGxContext context = null)
+		{
+			var methodParameters = methodInfo.GetParameters();
+			object[] parametersForInvocation = new object[methodParameters.Length];
+			var idx = 0;
+			foreach (var methodParameter in methodParameters)
+			{
+				Type parmType = methodParameter.ParameterType;
+				if (IsByRefParameter(methodParameter))
+				{
+					parmType = parmType.GetElementType();
+				}
+				object value = parameters.ElementAt(idx);
+				if (!value.GetType().Equals(parmType))
+				{
+					//To avoid convertion from string type
+					if (value.GetType() != typeof(string))
+					{
+						var convertedValue = ConvertStringToNewType(value, parmType, context);
+						parametersForInvocation[idx] = convertedValue;
+					}
+					else
+					{
+						throw new ArgumentException("Type does not match", methodParameter.Name);
+					}
+				}
+				else
+				{
+					parametersForInvocation[idx] = value;
+				}
+				idx++;
+			}
+			return parametersForInvocation;
+		}
 		private static Regex attVar = new Regex(@"^AV?\d{1,}", RegexOptions.Compiled);
 		private static string GxParameterName(string methodParameterName)
 		{