protobuf-net:基类库.DateTime到xs: DateTime



我想要bcl。DateTime元素转换为xs: DateTime在XPathDocument

这可能与问题#69有关

我创建了一个像这样的小测试项目

test.proto

import "bcl.proto";
message Test {
    required bcl.DateTime tAsOf = 1;    
}

program.cs

using System;
using System.IO;
using System.Xml;
using System.Xml.Serialization;
using System.Xml.XPath;
using ProtoBuf;
using test;
namespace DateTimeXML
{
    class Program
    {
        static void Main()
        {
            var d = new bcl.DateTime() {value = new DateTime(2011, 7, 31).Ticks};
            var t = new Test() {tAsOf = d};
            var xml = Serialize(t);
            WriteXpathDocument(xml, "c:\temp\xpathdoc.xml");
        }
        private static XPathDocument Serialize(Test obj)
        {
            XPathDocument xmlDoc;
            Serializer.PrepareSerializer<Test>();
            var x = new XmlSerializer(obj.GetType());
            using (var memoryStream = new MemoryStream())
            {
                using (TextWriter w = new StreamWriter(memoryStream))
                {
                    x.Serialize(w, obj);
                    memoryStream.Position = 0;
                    xmlDoc = new XPathDocument(memoryStream);
                }
            }
            return xmlDoc;
        }
        private static void WriteXpathDocument(XPathDocument xpathDoc, string filename)
        {
            // Create XpathNaviagtor instances from XpathDoc instance.
            var objXPathNav = xpathDoc.CreateNavigator();
            // Create XmlWriter settings instance.
            var objXmlWriterSettings = new XmlWriterSettings();
            objXmlWriterSettings.Indent = true;
            // Create disposable XmlWriter and write XML to file.
            using (var objXmlWriter = XmlWriter.Create(filename, objXmlWriterSettings))
            {
                objXPathNav.WriteSubtree(objXmlWriter);
                objXmlWriter.Close();
            }
        }
    }     
}

它创建以下XML文件:

<?xml version="1.0" encoding="utf-8"?>
<Test xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <tAsOf>
    <value>634476672000000000</value>
  </tAsOf>
</Test>

有趣;bcl.DateTime类型实际上是为了表示内部的DateTime格式,而不是为了直接使用。我可能应该纠正这一点,以便在翻译期间将bcl.DateTime解释为DateTime,但是这里更典型的用法(因为您正在谈论. net类型,例如DateTime)将是代码优先的,即

[ProtoContract]
class Test {
    [ProtoMember(1, IsRequired = true)]
    public DateTime AsOf {get;set;}  
}

这应该可以在protobuf和xs的目的下正常工作。

这里需要。proto吗?我可以修补,我只是想知道是否需要。


重新注释/更新,并重新使用。proto -我强烈建议使用最基本的通用时间值格式-可能是long(或string),并且或者在部分类中使用shim属性将两个DateTime值暴露给xs,或者(也许更好)使用单独的DTO来表示protobuf/xs方面并在它们之间映射。.proto不会喜欢平台间的bcl.DateTime

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