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* add SQLServer provider test * issue #27 test using sqlserver provider * Add ReflectionEmit package * Create parameterized queries Fix #24 * update to v2.2.1
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| using System; | ||
| using System.Reflection; | ||
| using System.Reflection.Emit; | ||
|
|
||
| namespace Gridify.Syntax | ||
| { | ||
| internal static class GridifyTypeBuilder | ||
| { | ||
| private class FieldDescriptor | ||
| { | ||
| public FieldDescriptor(string fieldName, Type fieldType) | ||
| { | ||
| FieldName = fieldName; | ||
| FieldType = fieldType; | ||
| } | ||
|
|
||
| public string FieldName { get; } | ||
| public Type FieldType { get; } | ||
| } | ||
|
|
||
| public static (object Instance, Type type) CreateNewObject(Type type, string fieldName, object? value) | ||
| { | ||
| var myTypeInfo = CompileResultTypeInfo(type, fieldName); | ||
| var myType = myTypeInfo!.AsType(); | ||
| var myObject = Activator.CreateInstance(myType); | ||
| myType.GetProperty(fieldName)!.SetValue(myObject, value); | ||
| return (myObject, myType); | ||
| } | ||
|
|
||
| public static TypeInfo? CompileResultTypeInfo(Type type, string name) | ||
| { | ||
| TypeBuilder tb = GetTypeBuilder(); | ||
| ConstructorBuilder constructor = | ||
| tb.DefineDefaultConstructor(MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName); | ||
|
|
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| var field = new FieldDescriptor(name, type); | ||
| CreateProperty(tb, field.FieldName, field.FieldType); | ||
| var objectTypeInfo = tb.CreateTypeInfo(); | ||
|
|
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| return objectTypeInfo; | ||
| } | ||
|
|
||
| private static TypeBuilder GetTypeBuilder() | ||
| { | ||
| const string? typeSignature = "GridifyDisplayClass"; | ||
| var an = new AssemblyName(typeSignature); | ||
| var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(new AssemblyName(Guid.NewGuid().ToString()), AssemblyBuilderAccess.Run); | ||
| ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule("RuntimeModule"); | ||
| TypeBuilder tb = moduleBuilder.DefineType(typeSignature, | ||
| TypeAttributes.Public | | ||
| TypeAttributes.Class | | ||
| TypeAttributes.AutoClass | | ||
| TypeAttributes.AnsiClass | | ||
| TypeAttributes.BeforeFieldInit | | ||
| TypeAttributes.AutoLayout, | ||
| null); | ||
| return tb; | ||
| } | ||
|
|
||
| private static void CreateProperty(TypeBuilder tb, string propertyName, Type propertyType) | ||
| { | ||
| FieldBuilder fieldBuilder = tb.DefineField("_" + propertyName, propertyType, FieldAttributes.Private); | ||
|
|
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| PropertyBuilder propertyBuilder = tb.DefineProperty(propertyName, PropertyAttributes.HasDefault, propertyType, null); | ||
| MethodBuilder getPropMthdBldr = tb.DefineMethod("get_" + propertyName, | ||
| MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig, propertyType, Type.EmptyTypes); | ||
| ILGenerator getIl = getPropMthdBldr.GetILGenerator(); | ||
|
|
||
| getIl.Emit(OpCodes.Ldarg_0); | ||
| getIl.Emit(OpCodes.Ldfld, fieldBuilder); | ||
| getIl.Emit(OpCodes.Ret); | ||
|
|
||
| MethodBuilder setPropMthdBldr = | ||
| tb.DefineMethod("set_" + propertyName, | ||
| MethodAttributes.Public | | ||
| MethodAttributes.SpecialName | | ||
| MethodAttributes.HideBySig, | ||
| null, new[] { propertyType }); | ||
|
|
||
| ILGenerator setIl = setPropMthdBldr.GetILGenerator(); | ||
| var modifyProperty = setIl.DefineLabel(); | ||
| var exitSet = setIl.DefineLabel(); | ||
|
|
||
| setIl.MarkLabel(modifyProperty); | ||
| setIl.Emit(OpCodes.Ldarg_0); | ||
| setIl.Emit(OpCodes.Ldarg_1); | ||
| setIl.Emit(OpCodes.Stfld, fieldBuilder); | ||
|
|
||
| setIl.Emit(OpCodes.Nop); | ||
| setIl.MarkLabel(exitSet); | ||
| setIl.Emit(OpCodes.Ret); | ||
|
|
||
| propertyBuilder.SetGetMethod(getPropMthdBldr); | ||
| propertyBuilder.SetSetMethod(setPropMthdBldr); | ||
| } | ||
| } | ||
| } |
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