Oops, I made one typo there. It should be:
"my_long = my_long >> 8;"
That is, shift by a byte, not a bit.
- Tyler
On Tue, Jan 4, 2011 at 10:50 PM, Tyler Hobbs <ty...@riptano.com> wrote:
> Here's an example:
>
> int64_t my_long = 12345678;
> char chars[8];
> for(int i = 0; i < 8; ++i) {
> chars[i] = my_long & 0xff;
> my_long = my_long >> 1;
> }
>
> std::string str_long(chars, 8);
>
> Column c1;
> c1.name = str_long;
> // etc ...
>
> Basically, Thrift expects a string which is a big-endian binary
> representation of a long. When you create the std::string, you have to
> specify the length of the char[] so that it doesn't terminate the string on
> a 0x00 byte.
>
> The approach is similar for integers and UUIDs.
> - Tyler
>
>
> On Tue, Jan 4, 2011 at 4:32 PM, Jaydeep Chovatia <
> jaydeep.chova...@openwave.com> wrote:
>
>> Hi,
>>
>>
>>
>> I have configured Cassandra Column Family (standard CF) of LongType. If I
>> try to insert data (using batch_mutate) in this Column Family then it
>> shows me following error: “*A long is exactly 8 bytes”. *I have tried
>> assigning column name of 8 bytes, 7 bytes, etc. but it shows same error.
>>
>>
>>
>> Please find my sample program details:
>>
>> *Platform*: Linux
>>
>> *Language*: C++, Cassandra Thrift interface
>>
>>
>>
>> Column c1;
>>
>> c1.name = "12345678";
>>
>> c1.value = SString(len).AsPtr();
>>
>> c1.timestamp = curTime;
>>
>> columns.push_back(c1);
>>
>>
>>
>> Any help on this would be appreciated.
>>
>>
>>
>> Thank you,
>>
>> Jaydeep
>>
>
>
