Re: Extracting column values from Phoenix composite primary key

[Anil]

HI Michael,

Thank you for the response.

Unfortunately, that is not working.

Following is the snippet. one of the column is unsigned long and trying to
extract the last column (with value target in the below code).
please correct me if i am doing wrong.

       byte SEPARATOR_BYTE = 0;
    byte[] SEPARATOR_BYTE_ARRAY = { 0 };
    byte[] startRow = ByteUtil.concat(
PVarchar.INSTANCE.toBytes("test"),
QueryConstants.SEPARATOR_BYTE_ARRAY,
PVarchar.INSTANCE.toBytes("src"),
QueryConstants.SEPARATOR_BYTE_ARRAY,
PVarchar.INSTANCE.toBytes("label"),
QueryConstants.SEPARATOR_BYTE_ARRAY,
PVarchar.INSTANCE.toBytes("direction"),
QueryConstants.SEPARATOR_BYTE_ARRAY,
PUnsignedLong.INSTANCE.toBytes(1235464603853L),
PVarchar.INSTANCE.toBytes("target"));


List<String> cols = new ArrayList<String>();
    int j = 0;
    for (int i= 0 ; i < startRow.length ; i++){
    if (startRow[i] == SEPARATOR_BYTE){
    cols.add(Bytes.toString(startRow, j, i-j));
    j = i+1;
    }
    }

    cols.add(Bytes.toString(startRow, j, startRow.length - j));

System.out.println(cols.size());

String rowKey = Bytes.toString(startRow);
String[] columns = rowKey.split("\u0000");

System.out.println(columns.length);

last entry in the array has special character too along with actual value.

Can you point out the bug in the above code if any. Thanks.

Regards,
Anil


On 25 August 2016 at 02:32, Michael McAllister <mmcallis...@homeaway.com>
wrote:

> Anil
>
>
>
> If you split the rowkey on the zero byte character, you should end up with
> the individual columns that made up your primary key. Details are here:-
>
>
>
> https://phoenix.apache.org/faq.html#How_I_map_Phoenix_
> table_to_an_existing_HBase_table
>
>
>
> Michael McAllister
>
> Staff Data Warehouse Engineer | Decision Systems
>
> mmcallis...@homeaway.com | C: 512.423.7447 | skype: michael.mcallister.ha
> <zimmk...@hotmail.com> | webex: https://h.a/mikewebex
>
> This electronic communication (including any attachment) is confidential.
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>
>
>
> *From: *Anil <anilk...@gmail.com>
> *Reply-To: *"user@phoenix.apache.org" <user@phoenix.apache.org>
> *Date: *Wednesday, August 24, 2016 at 4:10 AM
> *To: *"user@phoenix.apache.org" <user@phoenix.apache.org>
> *Subject: *Re: Extracting column values from Phoenix composite primary key
>
>
>
> Any inputs ? Thanks.
>
>
>
> On 24 August 2016 at 11:13, Anil <anilk...@gmail.com> wrote:
>
> Hi,
>
>
>
> I have created primary key with columns in phoenix.
>
> is there any way to extract the column values from hbase row key ? Please
> help.
>
>
>
> Thanks,
>
> Anil
>
>
>