/// <summary>
/// 返回指定类型的对象，其值等效于指定字符串对象。
/// </summary>
/// <param name="context"> </param>
/// <param name="input"> 需要转换类型的字符串对象 </param>
/// <param name="outputType"> 换转后的类型 </param>
/// <param name="success"> 是否成功 </param>
protected override IDictionary <K, V> ChangeType(ConvertContext context, string input, Type outputType,
out bool success)
{
input = input?.Trim() ?? "";
if (input.Length == 0)
{
var keyConvertor = context.Get <K>();
var valueConvertor = context.Get <V>();
var builder = new DictionaryBuilder(context, outputType, keyConvertor, valueConvertor);
// ReSharper disable once AssignmentInConditionalExpression
return((success = builder.TryCreateInstance()) ? builder.Instance : null);
}
if (input?.Length > 2)
{
if ((input[0] == '{') && (input[input.Length - 1] == '}'))
{
try
{
var result = ComponentServices.ToJsonObject(outputType, input);
success = true;
return((IDictionary <K, V>)result);
}
catch (Exception ex)
{
context.AddException(ex);
}
}
}
success = false;
return(null);
}
/// <summary>
/// 返回指定类型的对象，其值等效于指定对象。
/// </summary>
/// <param name="context"> </param>
/// <param name="input"> 需要转换类型的对象 </param>
/// <param name="outputType"> 换转后的类型 </param>
/// <param name="success"> 是否成功 </param>
/// <returns> </returns>
protected override IDictionary <K, V> ChangeTypeImpl(ConvertContext context, object input, Type outputType,
out bool success)
{
if (input.IsNull())
{
success = true;
return(null);
}
var keyConvertor = context.Get <K>();
var valueConvertor = context.Get <V>();
var builder = new DictionaryBuilder(context, outputType, keyConvertor, valueConvertor);
if (builder.TryCreateInstance() == false)
{
success = false;
return(null);
}
var mapper = new Mapper(input);
if (mapper.Error != null)
{
context.AddException(mapper.Error);
success = false;
return(null);
}
while (mapper.MoveNext())
{
if (builder.Add(mapper.Key, mapper.Value) == false)
{
success = false;
return(null);
}
}
success = true;
return(builder.Instance);
}
/// <summary>
/// 返回指定类型的对象，其值等效于指定对象。
/// </summary>
/// <param name="context"> </param>
/// <param name="input"> 需要转换类型的对象 </param>
/// <param name="outputType"> 换转后的类型 </param>
/// <param name="success"> 是否成功 </param>
/// <returns> </returns>
protected override IDictionary ChangeTypeImpl(ConvertContext context, object input, Type outputType,
out bool success)
{
if ((input == null) || input is DBNull)
{
success = true;
return(null);
}
var builder = new DictionaryBuilder(outputType, context);
if (builder.TryCreateInstance() == false)
{
success = false;
return(null);
}
var mapper = new Mapper(input);
if (mapper.Error != null)
{
context.AddException(mapper.Error);
success = false;
return(null);
}
while (mapper.MoveNext())
{
if (builder.Add(mapper.Key, mapper.Value) == false)
{
success = false;
return(null);
}
}
success = true;
return(builder.Instance);
}
