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List:       avro-user
Subject:    128 bit integers
From:       svante karlsson <saka () csi ! se>
Date:       2014-05-28 15:30:14
Message-ID: CAHkETj_So9cAt97giuOf74tAcBiQcV=mSk4ZKcCR15StmWV=Sw () mail ! gmail ! com
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I'm having issues with endian converison of 128 bit integers (uuid's in my
case) but the problem is generic

I currently encodes them as "fixed" but that leaves the swapping of bytes
(for endianness) up to the user. I had not given the matter any thought
until we streched some existing 64 bit id's in an existing database to 128
by simply adding 0 in the upper 64 bits. It turns out that the c/c++ and
java versions ar not (of course) compatible.

I think we have the same issue in the spec

The spec exemplifies

serverHash in avro rpc as a md5.

 {"type": "fixed", "name": "MD5", "size": 16}

 java to java this works fine...

What's the best way to tackle this?

/svante

[Attachment #3 (text/html)]

<div dir="ltr">I&#39;m having issues with endian converison of 128 bit integers \
(uuid&#39;s in my case) but the problem is generic<br><br>I currently encodes them as \
&quot;fixed&quot; but that leaves the swapping of bytes (for endianness) up to the \
user. I had not given the matter any thought until we streched some existing 64 bit \
id&#39;s in an existing database to 128 by simply adding 0 in the upper 64 bits. It \
turns out that the c/c++ and java versions ar not (of course) compatible. <br> <br>I \
think we have the same issue in the spec<br><br>The spec exemplifies \
<br><br>serverHash in avro rpc as a md5. <br><br>  {&quot;type&quot;: \
&quot;fixed&quot;, &quot;name&quot;: &quot;MD5&quot;, &quot;size&quot;: 16}<br> <br>  \
java to java this works fine...<br><br>What&#39;s the best way to tackle \
this?<br><br>/svante<br><br><pre class="" \
style="border-color:rgb(165,182,198);color:rgb(0,0,0);font-size:13px"><span \
style="font-family:arial"><br> </span></pre><pre class="" \
style="border-color:rgb(165,182,198);color:rgb(0,0,0);font-size:13px"><span \
style="font-family:arial"><br></span></pre><pre class="" \
style="border-color:rgb(165,182,198);color:rgb(0,0,0);font-size:13px"> <br></pre><pre \
class="" style="border-color:rgb(165,182,198);color:rgb(0,0,0);font-size:13px"><br></pre></div>




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