public static ReadInfoByType <T> CreateByType <T>(IDataReader reader, ReadOptions readOptions) where T : new()
{
ReadOptions readOpt = GetReadOptions(readOptions);
ReaderField[] readerFields = new ReaderField[reader.FieldCount];
for (int i = 0; i < reader.FieldCount; i++)
{
readerFields[i] = new ReaderField()
{
Ordinal = i, Name = reader.GetName(i)
};
}
Type type = typeof(T);
FieldInfo[] fiAll = new FieldInfo[0];
if ((readOpt.FromTypeOption.Value & FromTypeOption.PublicField) == FromTypeOption.PublicField)
{
fiAll = type.GetFields(BindingFlags.Instance | BindingFlags.Public);
if ((readOpt.FromTypeOption.Value & FromTypeOption.Collection) == 0)
{
fiAll = fiAll.Where(x => !Helpers.IsCollection(x.FieldType)).ToArray();
}
}
PropertyInfo[] piAll = new PropertyInfo[0];
if ((readOpt.FromTypeOption.Value & FromTypeOption.PublicProperty) == FromTypeOption.PublicProperty)
{
piAll = type.GetProperties(BindingFlags.Instance | BindingFlags.Public);
if ((readOpt.FromTypeOption.Value & FromTypeOption.Collection) == 0)
{
piAll = piAll.Where(x => !Helpers.IsCollection(x.PropertyType)).ToArray();
}
}
if (readOpt.CaseSensitiveFieldsMatching.Value)
{
if (readerFields.GroupBy(x => x.Name).Any(x => x.Count() > 1))
{
throw new ArgumentException("Reader field names has been duplicated");
}
if (piAll.Select(x => x.Name).Concat(fiAll.Select(x => x.Name)).GroupBy(x => x).Any(x => x.Count() > 1))
{
throw new ArgumentException("Destination object field names has been duplicated");
}
}
else
{
if (readerFields.GroupBy(x => x.Name.ToLowerInvariant()).Any(x => x.Count() > 1))
{
throw new ArgumentException("Reader field names has been duplicated");
}
if (piAll.Select(x => x.Name.ToLowerInvariant()).Concat(fiAll.Select(x => x.Name.ToLowerInvariant()))
.GroupBy(x => x).Any(x => x.Count() > 1))
{
throw new ArgumentException("Destination object field names has been duplicated");
}
}
var fiCommon = readOpt.CaseSensitiveFieldsMatching.Value ?
fiAll.Join(readerFields, x => x.Name, x => x.Name, (x, y) => new { FieldInfo = x, ReaderField = y }).ToArray() :
fiAll.Join(readerFields, x => x.Name.ToLowerInvariant(), x => x.Name.ToLowerInvariant(), (x, y) => new { FieldInfo = x, ReaderField = y }).ToArray();
var piCommon = readOpt.CaseSensitiveFieldsMatching.Value ?
piAll.Join(readerFields, x => x.Name, x => x.Name, (x, y) => new { PropertyInfo = x, ReaderField = y }).ToArray() :
piAll.Join(readerFields, x => x.Name.ToLowerInvariant(), x => x.Name.ToLowerInvariant(), (x, y) => new { PropertyInfo = x, ReaderField = y }).ToArray();
Helpers.CheckFieldSelection(readOpt.FieldsSelector.Value, readerFields.Length, fiAll.Length + piAll.Length, fiCommon.Length + piCommon.Length);
Type nullableTypeDef = typeof(Nullable <int>).GetGenericTypeDefinition();
FieldInfo[] fi = new FieldInfo[fiCommon.Length];
int[] fiInd = new int[fiCommon.Length];
bool[] fiNullable = new bool[fiCommon.Length];
for (int i = 0; i < fiCommon.Length; i++)
{
fi[i] = fiCommon[i].FieldInfo;
fiInd[i] = fiCommon[i].ReaderField.Ordinal;
fiNullable[i] = !fiCommon[i].FieldInfo.FieldType.GetTypeInfo().IsValueType ||
(fiCommon[i].FieldInfo.FieldType.GetTypeInfo().IsGenericType&& fiCommon[i].FieldInfo.FieldType.GetGenericTypeDefinition().Equals(nullableTypeDef));
}
PropertyInfo[] pi = new PropertyInfo[piCommon.Length];
int[] piInd = new int[piCommon.Length];
bool[] piNullable = new bool[piCommon.Length];
for (int i = 0; i < piCommon.Length; i++)
{
pi[i] = piCommon[i].PropertyInfo;
piInd[i] = piCommon[i].ReaderField.Ordinal;
piNullable[i] = !piCommon[i].PropertyInfo.PropertyType.GetTypeInfo().IsValueType ||
(piCommon[i].PropertyInfo.PropertyType.GetTypeInfo().IsGenericType&& piCommon[i].PropertyInfo.PropertyType.GetGenericTypeDefinition().Equals(nullableTypeDef));
}
return(new ReadInfoByType <T>()
{
Reader = reader,
fi = fi,
fiInd = fiInd,
fiNullable = fiNullable,
pi = pi,
piInd = piInd,
piNullable = piNullable
});
}
public static ReadInfoAnonymous <T> CreateAnonymous <T>(IDataReader reader, T proto, ReadOptions readOptions)
{
ReadOptions readOpt = GetReadOptions(readOptions);
ReaderField[] readerFields = new ReaderField[reader.FieldCount];
for (int i = 0; i < reader.FieldCount; i++)
{
readerFields[i] = new ReaderField()
{
Ordinal = i, Name = reader.GetName(i)
};
}
ConstructorInfo constructor = typeof(T).GetConstructors().First();
ParameterInfo[] piAll = constructor.GetParameters();
if (readOpt.CaseSensitiveFieldsMatching.Value)
{
if (readerFields.GroupBy(x => x.Name).Any(x => x.Count() > 1))
{
throw new ArgumentException("Reader field names has been duplicated");
}
if (piAll.GroupBy(x => x.Name).Any(x => x.Count() > 1))
{
throw new ArgumentException("Destination object field names has been duplicated");
}
}
else
{
if (readerFields.GroupBy(x => x.Name.ToLowerInvariant()).Any(x => x.Count() > 1))
{
throw new ArgumentException("Reader field names has been duplicated");
}
if (piAll.GroupBy(x => x.Name.ToLowerInvariant()).Any(x => x.Count() > 1))
{
throw new ArgumentException("Destination object field names has been duplicated");
}
}
var piCommon = readOpt.CaseSensitiveFieldsMatching.Value ?
piAll.Join(readerFields, x => x.Name, x => x.Name, (x, y) => new { ParameterInfo = x, ReaderField = y }).ToArray() :
piAll.Join(readerFields, x => x.Name.ToLowerInvariant(), x => x.Name.ToLowerInvariant(), (x, y) => new { ParameterInfo = x, ReaderField = y }).ToArray();
Helpers.CheckFieldSelection(readOpt.FieldsSelector.Value, readerFields.Length, piAll.Length, piCommon.Length);
Type nullableTypeDef = typeof(Nullable <int>).GetGenericTypeDefinition();
ParameterInfo[] pi = new ParameterInfo[piCommon.Length];
int[] piInd = new int[piCommon.Length];
bool[] piNullable = new bool[piCommon.Length];
for (int i = 0; i < piCommon.Length; i++)
{
pi[i] = piCommon[i].ParameterInfo;
piInd[i] = piCommon[i].ReaderField.Ordinal;
piNullable[i] = !piCommon[i].ParameterInfo.ParameterType.GetTypeInfo().IsValueType ||
(piCommon[i].ParameterInfo.ParameterType.GetTypeInfo().IsGenericType&& piCommon[i].ParameterInfo.ParameterType.GetGenericTypeDefinition().Equals(nullableTypeDef));
}
return(new ReadInfoAnonymous <T>()
{
Reader = reader,
constructor = constructor,
piAll = piAll,
pi = pi,
piInd = piInd,
piNullable = piNullable
});
}
