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85 lines
3.1 KiB
C#
85 lines
3.1 KiB
C#
using System;
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using System.Reflection;
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using Fasterflect;
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namespace Marr.Data.Reflection
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{
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public class CachedReflectionStrategy : IReflectionStrategy
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{
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/// <summary>
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/// Sets an entity field value by name to the passed in 'val'.
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/// </summary>
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public void SetFieldValue<T>(T entity, string fieldName, object val)
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{
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MemberInfo member = entity.GetType().GetMember(fieldName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)[0];
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try
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{
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// Handle DB null values
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if (val == DBNull.Value)
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{
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if (member.MemberType == MemberTypes.Field)
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{
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entity.SetFieldValue(member.Name, ReflectionHelper.GetDefaultValue(((FieldInfo)member).FieldType));
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}
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else if (member.MemberType == MemberTypes.Property)
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{
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var pi = (PropertyInfo)member;
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if (pi.CanWrite)
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{
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entity.SetPropertyValue(member.Name, ReflectionHelper.GetDefaultValue(((PropertyInfo)member).PropertyType));
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}
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}
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}
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else
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{
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if (member.MemberType == MemberTypes.Field)
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{
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entity.SetFieldValue(member.Name, val);
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}
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else if (member.MemberType == MemberTypes.Property && ((PropertyInfo)member).CanWrite)
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{
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member.Set(entity, val);
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}
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}
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}
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catch (Exception ex)
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{
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string msg = string.Format("The DataMapper was unable to load the following field: {0}. \nDetails: {1}", fieldName, ex.Message);
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throw new DataMappingException(msg, ex);
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}
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}
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/// <summary>
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/// Gets an entity field value by name.
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/// </summary>
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public object GetFieldValue(object entity, string fieldName)
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{
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MemberInfo member = entity.GetType().GetMember(fieldName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)[0];
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if (member.MemberType == MemberTypes.Field)
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{
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return entity.GetFieldValue(member.Name);
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}
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if (member.MemberType == MemberTypes.Property && ((PropertyInfo)member).CanRead)
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{
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return entity.GetPropertyValue(member.Name);
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}
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throw new DataMappingException(string.Format("The DataMapper could not get the value for {0}.{1}.", entity.GetType().Name, fieldName));
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}
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/// <summary>
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/// Instantiantes a type using the FastReflector library for increased speed.
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/// </summary>
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/// <param name="type"></param>
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/// <returns></returns>
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public object CreateInstance(Type type)
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{
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return type.CreateInstance();
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}
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}
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}
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