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Date: Mon, 21 Mar 2011 11:14:11 -0700
Message-ID: <AANLkTinwp50TD-CqwPzUBKqAov7B4ts2eAHM7NU7z7HW@mail.gmail.com>
Subject: Re: reading bytes from a ByteBuffer
From: Garrett Wu <wugarrett@gmail.com>
To: user@avro.apache.org
Cc: sitkack@gmail.com
Content-Type: multipart/alternative; boundary=20cf300fb1272d9fea049f0218ee

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byteBuffer.position() and byteBuffer.limit() are the start/end offsets in
the byteBuffer.array().

On Fri, Mar 18, 2011 at 5:53 PM, <sitkack@gmail.com> wrote:

> I have a large sequence of pdfs stored in an avro file as part of a larger
> structure.
>
> I have found a bug in my code where I was calling
>
>   byteBuffer.array() to get back the byte[], this is incorrect as this is
> entire backing store and NOT the contents of the element stored in Avro.
>
> How/where do I get the offset and the length of the ByteBuffer returned
> from Avro? Ideally I would like a byte[] of the "bytes" stored in Avro.
>
> The convenience classes were generated via the maven plugin so my Record
> signature is
>
>        MyRecord extends org.apache.avro.specific.SpecificRecordBase
> implements org.apache.avro.specific.SpecificRecord
>
> The avro schema entry is
>
> {
>        "name" : "pdfs",
>        "type" :  {  "type" : "array", "items": "bytes" }
> }

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<div>byteBuffer.position() and byteBuffer.limit() are the start/end offsets=
 in the byteBuffer.array().</div><div><br><div class=3D"gmail_quote">On Fri=
, Mar 18, 2011 at 5:53 PM,  <span dir=3D"ltr">&lt;<a href=3D"mailto:sitkack=
@gmail.com">sitkack@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">I have a large sequence of pdfs stored in a=
n avro file as part of a larger structure.<br>
<br>
I have found a bug in my code where I was calling<br>
<br>
 =A0 byteBuffer.array() to get back the byte[], this is incorrect as this i=
s entire backing store and NOT the contents of the element stored in Avro.<=
br>
<br>
How/where do I get the offset and the length of the ByteBuffer returned fro=
m Avro? Ideally I would like a byte[] of the &quot;bytes&quot; stored in Av=
ro.<br>
<br>
The convenience classes were generated via the maven plugin so my Record si=
gnature is<br>
<br>
 =A0 =A0 =A0 =A0MyRecord extends org.apache.avro.specific.SpecificRecordBas=
e implements org.apache.avro.specific.SpecificRecord<br>
<br>
The avro schema entry is<br>
<br>
{<br>
 =A0 =A0 =A0 =A0&quot;name&quot; : &quot;pdfs&quot;,<br>
 =A0 =A0 =A0 =A0&quot;type&quot; : =A0{ =A0&quot;type&quot; : &quot;array&q=
uot;, &quot;items&quot;: &quot;bytes&quot; }<br>
}</blockquote></div><br></div>

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