private static Func <object, object> GetConverter(IMapper mapper, PocoColumn pc, Type srcType, Type dstType)
{
try
{
Func <object, object> converter = null;
// Get converter from the mapper
if (pc != null)
{
converter = mapper.GetFromDbConverter(pc.PropertyInfo, srcType);
if (converter != null)
{
return(converter);
}
}
// Standard DateTime->Utc mapper
if (pc != null && pc.ForceToUtc && srcType == typeof(DateTime) && (dstType == typeof(DateTime) || dstType == typeof(DateTime?)))
{
return(delegate(object src) { return new DateTime(((DateTime)src).Ticks, DateTimeKind.Utc); });
}
// unwrap nullable types
Type underlyingDstType = Nullable.GetUnderlyingType(dstType);
if (underlyingDstType != null)
{
dstType = underlyingDstType;
}
// Forced type conversion including integral types -> enum
if (dstType.IsEnum && IsIntegralType(srcType))
{
var backingDstType = Enum.GetUnderlyingType(dstType);
if (underlyingDstType != null)
{
// if dstType is Nullable<Enum>, convert to enum value
return(delegate(object src) { return Enum.ToObject(dstType, src); });
}
else if (srcType != backingDstType)
{
return(delegate(object src) { return Convert.ChangeType(src, backingDstType, null); });
}
}
else if (!dstType.IsAssignableFrom(srcType))
{
if (dstType.IsEnum && srcType == typeof(string))
{
return(delegate(object src) { return EnumMapper.EnumFromString(dstType, (string)src); });
}
if (dstType == typeof(Guid) && srcType == typeof(string))
{
return(delegate(object src) { return Guid.Parse((string)src); });
}
return(delegate(object src) { return Convert.ChangeType(src, dstType, null); });
}
return(null);
}
catch
{
throw;
}
}
public PocoData(Type type, IMapper defaultMapper)
{
Type = type;
// Get the mapper for this type
var mapper = Mappers.GetMapper(type, defaultMapper);
// Get the table info
TableInfo = mapper.GetTableInfo(type);
// Work out bound properties
Columns = new Dictionary <string, PocoColumn> (StringComparer.OrdinalIgnoreCase);
foreach (var pi in type.GetProperties(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
{
ColumnInfo ci = mapper.GetColumnInfo(pi);
if (ci == null)
{
continue;
}
var pc = new PocoColumn();
pc.PropertyInfo = pi;
pc.ColumnName = ci.ColumnName;
pc.ResultColumn = ci.ResultColumn;
pc.AutoSelectedResultColumn = ci.AutoSelectedResultColumn;
pc.ForceToUtc = ci.ForceToUtc;
pc.InsertTemplate = ci.InsertTemplate;
pc.UpdateTemplate = ci.UpdateTemplate;
// Store it
Columns.Add(pc.ColumnName, pc);
}
// Build column list for automatic select
QueryColumns = (from c in Columns where !c.Value.ResultColumn || c.Value.AutoSelectedResultColumn select c.Key).ToArray();
}
