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Posted to user@hive.apache.org by Mark Golden <ma...@gmail.com> on 2012/09/17 20:55:35 UTC
hive json serde
Hi,
I'm looking for a hive json serde that works well. Any suggestions? I did a
quick google and found a few but none of them are complete.
Thanks,
Mark.
Re: hive json serde
Posted by Mark Golden <ma...@gmail.com>.
Thanks Chuck. I'll try this now.
On Mon, Sep 17, 2012 at 12:10 PM, Connell, Chuck
<Ch...@nuance.com>wrote:
> I used his pre-built jar. No need to compile anything.****
>
> ** **
>
> Be sure to add “ --auxpath /path/to/jar/dir “ to the Hive command line.***
> *
>
> ** **
>
> Chuck****
>
> ** **
>
> ** **
>
> ** **
>
> *From:* Connell, Chuck [mailto:Chuck.Connell@nuance.com]
> *Sent:* Monday, September 17, 2012 3:06 PM
> *To:* user@hive.apache.org
> *Subject:* RE: hive json serde****
>
> ** **
>
> I just finished testing this one. No problems found. The developer is also
> quite responsive to issues raised. I encouraged him to submit it to the
> Hive dev team as core code.****
>
> ** **
>
> https://github.com/rcongiu/Hive-JSON-Serde/****
>
> ** **
>
> Chuck Connell****
>
> Nuance R&D Data Team****
>
> Burlington, MA****
>
> ** **
>
> ** **
>
> *From:* Mark Golden [mailto:mark.golden1744@gmail.com<ma...@gmail.com>]
>
> *Sent:* Monday, September 17, 2012 2:56 PM
> *To:* user@hive.apache.org
> *Subject:* hive json serde****
>
> ** **
>
> Hi,
>
> I'm looking for a hive json serde that works well. Any suggestions? I did
> a quick google and found a few but none of them are complete.
>
> Thanks,
> Mark.****
>
Re: hive json serde
Posted by Mark Golden <ma...@gmail.com>.
I agree that we can use $.C.D & C.D directly but if the key is not present
and I have several such keys then it is better to not create so many
columns.
On Tue, Sep 18, 2012 at 5:47 AM, Connell, Chuck <Ch...@nuance.com>wrote:
> OK, but keep in mind that you could use
> get_json_object(whole-json-field, $.C.D). If using a serde, then you can
> say just C.D directly.****
>
> ** **
>
> Chuck Connell****
>
> Nuance R&D Data Team****
>
> Burlington, MA****
>
> ** **
>
> ** **
>
> *From:* Mark Golden [mailto:mark.golden1744@gmail.com]
> *Sent:* Monday, September 17, 2012 7:31 PM
>
> *To:* Connell, Chuck
> *Cc:* user@hive.apache.org
> *Subject:* Re: hive json serde****
>
> ** **
>
> Thanks Chuck.
>
> I tried both json_tuple & get_json_objects on top of the serde table and
> it works too. I have nested jsons and some of the keys do not have a
> specific schema (You can throw whatever you want there) so if I want to
> query from those keys then I have to use get_json_object on top of the
> serde table. If I have the following json
>
> { "A" : "I love hive", "B" : "User mailing list is great", "C" : { "D" :
> "chuck", "E" : "is awesome and thanks for your help" } }
> { "A" : "I love hive", "B" : "User mailing list is great", "C" : { "G" :
> "It will rain in NY tonight" } }
> { "A" : "I love hive", "B" : "User mailing list is great", "C" : { "H" :
> "No it will snow in NY" } }
>
> If I create a table on top of json like this then the serde will work,
> json_tuple & get_json_object will also work but to query the keys inside
> "C" I need to do get_json_object on "C" something like
>
> select *
> from my_serde_table
> where get_json_object(C, "$.D") ilike "chuck"
>
> I like serde table because it is much cleaner than create a table with
> (value string) and then doing get_json_object or json_tuple and extract all
> the columns out.
>
> I'm exposing this table to other users in my company so I want to have the
> serde table. Thanks for your help.****
>
> On Mon, Sep 17, 2012 at 3:49 PM, Connell, Chuck <Ch...@nuance.com>
> wrote:****
>
> A few things that should help...
>
> - There are three ways to handle JSON within a Hive table,
> get_json_object, json_tuple, and JSON SerDe. These are separate mechanisms.
> So if you want to use get_json_object, you don't need to load a SerDe.
>
> - With a SerDe, Hive understands JSON fields natively, so you can just use
> the plain field names, no special function call at all.
>
> - I'm not sure if auxpath accepts a relative path, but I know the full
> path works.
>
> Chuck
>
>
> ****
> ------------------------------
>
> *From:* Mark Golden [mark.golden1744@gmail.com]
> *Sent:* Monday, September 17, 2012 5:58 PM
> *To:* Connell, Chuck
> *Cc:* user@hive.apache.org****
>
>
> *Subject:* Re: hive json serde****
>
> ** **
>
> It works now. Looks like there is a bug in the code.
>
> if you do hive --auxpath ./serde then I get an error but if I get the full
> path as
> hive --auxpath /var/lib/hdfs/serde/ then get_json_object() works.
>
> Thanks for your help. Appreciate it.
>
> CCing hive user group as well.
>
> ****
>
> On Mon, Sep 17, 2012 at 2:54 PM, Mark Golden <ma...@gmail.com>
> wrote:****
>
> :-) Thanks. I downloaded and got it compiled as well.
>
> My table has nested JSON values so when I tried to do
> get_json_object(<column>,'$.<key>') this serde doesn't work in that case.
> It throws an error. I'll email the developer too.
>
> When you tried did you try this on a cluster of nodes or on a single
> instance? ** **
>
> ** **
>
> On Mon, Sep 17, 2012 at 2:38 PM, Connell, Chuck <Ch...@nuance.com>
> wrote:****
>
> Go to the Downloads link on the project page, near the upper right.
>
> ****
> ------------------------------
>
> *From:* Mark Golden [mark.golden1744@gmail.com]
> *Sent:* Monday, September 17, 2012 5:32 PM
> *To:* Connell, Chuck
> *Subject:* Re: hive json serde****
>
> Hey Chuck,
>
> Where did you download the prebuild jar from?****
>
> On Mon, Sep 17, 2012 at 12:10 PM, Connell, Chuck <Ch...@nuance.com>
> wrote:****
>
> I used his pre-built jar. No need to compile anything.****
>
> ****
>
> Be sure to add “ --auxpath /path/to/jar/dir “ to the Hive command line.***
> *
>
> ****
>
> Chuck****
>
> ****
>
> ****
>
> ****
>
> *From:* Connell, Chuck [mailto:Chuck.Connell@nuance.com]
> *Sent:* Monday, September 17, 2012 3:06 PM
> *To:* user@hive.apache.org
> *Subject:* RE: hive json serde****
>
> ****
>
> I just finished testing this one. No problems found. The developer is also
> quite responsive to issues raised. I encouraged him to submit it to the
> Hive dev team as core code.****
>
> ****
>
> https://github.com/rcongiu/Hive-JSON-Serde/****
>
> ****
>
> Chuck Connell****
>
> Nuance R&D Data Team****
>
> Burlington, MA****
>
> ****
>
> ****
>
> *From:* Mark Golden [mailto:mark.golden1744@gmail.com<ma...@gmail.com>]
>
> *Sent:* Monday, September 17, 2012 2:56 PM
> *To:* user@hive.apache.org
> *Subject:* hive json serde****
>
> ****
>
> Hi,
>
> I'm looking for a hive json serde that works well. Any suggestions? I did
> a quick google and found a few but none of them are complete.
>
> Thanks,
> Mark.****
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
RE: hive json serde
Posted by "Connell, Chuck" <Ch...@nuance.com>.
OK, but keep in mind that you could use get_json_object(whole-json-field, $.C.D). If using a serde, then you can say just C.D directly.
Chuck Connell
Nuance R&D Data Team
Burlington, MA
From: Mark Golden [mailto:mark.golden1744@gmail.com]
Sent: Monday, September 17, 2012 7:31 PM
To: Connell, Chuck
Cc: user@hive.apache.org
Subject: Re: hive json serde
Thanks Chuck.
I tried both json_tuple & get_json_objects on top of the serde table and it works too. I have nested jsons and some of the keys do not have a specific schema (You can throw whatever you want there) so if I want to query from those keys then I have to use get_json_object on top of the serde table. If I have the following json
{ "A" : "I love hive", "B" : "User mailing list is great", "C" : { "D" : "chuck", "E" : "is awesome and thanks for your help" } }
{ "A" : "I love hive", "B" : "User mailing list is great", "C" : { "G" : "It will rain in NY tonight" } }
{ "A" : "I love hive", "B" : "User mailing list is great", "C" : { "H" : "No it will snow in NY" } }
If I create a table on top of json like this then the serde will work, json_tuple & get_json_object will also work but to query the keys inside "C" I need to do get_json_object on "C" something like
select *
from my_serde_table
where get_json_object(C, "$.D") ilike "chuck"
I like serde table because it is much cleaner than create a table with (value string) and then doing get_json_object or json_tuple and extract all the columns out.
I'm exposing this table to other users in my company so I want to have the serde table. Thanks for your help.
On Mon, Sep 17, 2012 at 3:49 PM, Connell, Chuck <Ch...@nuance.com>> wrote:
A few things that should help...
- There are three ways to handle JSON within a Hive table, get_json_object, json_tuple, and JSON SerDe. These are separate mechanisms. So if you want to use get_json_object, you don't need to load a SerDe.
- With a SerDe, Hive understands JSON fields natively, so you can just use the plain field names, no special function call at all.
- I'm not sure if auxpath accepts a relative path, but I know the full path works.
Chuck
________________________________
From: Mark Golden [mark.golden1744@gmail.com<ma...@gmail.com>]
Sent: Monday, September 17, 2012 5:58 PM
To: Connell, Chuck
Cc: user@hive.apache.org<ma...@hive.apache.org>
Subject: Re: hive json serde
It works now. Looks like there is a bug in the code.
if you do hive --auxpath ./serde then I get an error but if I get the full path as
hive --auxpath /var/lib/hdfs/serde/ then get_json_object() works.
Thanks for your help. Appreciate it.
CCing hive user group as well.
On Mon, Sep 17, 2012 at 2:54 PM, Mark Golden <ma...@gmail.com>> wrote:
:-) Thanks. I downloaded and got it compiled as well.
My table has nested JSON values so when I tried to do get_json_object(<column>,'$.<key>') this serde doesn't work in that case. It throws an error. I'll email the developer too.
When you tried did you try this on a cluster of nodes or on a single instance?
On Mon, Sep 17, 2012 at 2:38 PM, Connell, Chuck <Ch...@nuance.com>> wrote:
Go to the Downloads link on the project page, near the upper right.
________________________________
From: Mark Golden [mark.golden1744@gmail.com<ma...@gmail.com>]
Sent: Monday, September 17, 2012 5:32 PM
To: Connell, Chuck
Subject: Re: hive json serde
Hey Chuck,
Where did you download the prebuild jar from?
On Mon, Sep 17, 2012 at 12:10 PM, Connell, Chuck <Ch...@nuance.com>> wrote:
I used his pre-built jar. No need to compile anything.
Be sure to add " --auxpath /path/to/jar/dir " to the Hive command line.
Chuck
From: Connell, Chuck [mailto:Chuck.Connell@nuance.com<ma...@nuance.com>]
Sent: Monday, September 17, 2012 3:06 PM
To: user@hive.apache.org<ma...@hive.apache.org>
Subject: RE: hive json serde
I just finished testing this one. No problems found. The developer is also quite responsive to issues raised. I encouraged him to submit it to the Hive dev team as core code.
https://github.com/rcongiu/Hive-JSON-Serde/
Chuck Connell
Nuance R&D Data Team
Burlington, MA
From: Mark Golden [mailto:mark.golden1744@gmail.com]
Sent: Monday, September 17, 2012 2:56 PM
To: user@hive.apache.org<ma...@hive.apache.org>
Subject: hive json serde
Hi,
I'm looking for a hive json serde that works well. Any suggestions? I did a quick google and found a few but none of them are complete.
Thanks,
Mark.
Re: hive json serde
Posted by Mark Golden <ma...@gmail.com>.
Thanks Chuck.
I tried both json_tuple & get_json_objects on top of the serde table and it
works too. I have nested jsons and some of the keys do not have a specific
schema (You can throw whatever you want there) so if I want to query from
those keys then I have to use get_json_object on top of the serde table. If
I have the following json
{ "A" : "I love hive", "B" : "User mailing list is great", "C" : { "D" :
"chuck", "E" : "is awesome and thanks for your help" } }
{ "A" : "I love hive", "B" : "User mailing list is great", "C" : { "G" :
"It will rain in NY tonight" } }
{ "A" : "I love hive", "B" : "User mailing list is great", "C" : { "H" :
"No it will snow in NY" } }
If I create a table on top of json like this then the serde will work,
json_tuple & get_json_object will also work but to query the keys inside
"C" I need to do get_json_object on "C" something like
select *
from my_serde_table
where get_json_object(C, "$.D") ilike "chuck"
I like serde table because it is much cleaner than create a table with
(value string) and then doing get_json_object or json_tuple and extract all
the columns out.
I'm exposing this table to other users in my company so I want to have the
serde table. Thanks for your help.
On Mon, Sep 17, 2012 at 3:49 PM, Connell, Chuck <Ch...@nuance.com>wrote:
> A few things that should help...
>
> - There are three ways to handle JSON within a Hive table,
> get_json_object, json_tuple, and JSON SerDe. These are separate mechanisms.
> So if you want to use get_json_object, you don't need to load a SerDe.
>
> - With a SerDe, Hive understands JSON fields natively, so you can just use
> the plain field names, no special function call at all.
>
> - I'm not sure if auxpath accepts a relative path, but I know the full
> path works.
>
> Chuck
>
>
>
> ------------------------------
> *From:* Mark Golden [mark.golden1744@gmail.com]
> *Sent:* Monday, September 17, 2012 5:58 PM
> *To:* Connell, Chuck
> *Cc:* user@hive.apache.org
>
> *Subject:* Re: hive json serde
>
> It works now. Looks like there is a bug in the code.
>
> if you do hive --auxpath ./serde then I get an error but if I get the full
> path as
> hive --auxpath /var/lib/hdfs/serde/ then get_json_object() works.
>
> Thanks for your help. Appreciate it.
>
> CCing hive user group as well.
>
>
> On Mon, Sep 17, 2012 at 2:54 PM, Mark Golden <ma...@gmail.com>wrote:
>
>> :-) Thanks. I downloaded and got it compiled as well.
>>
>> My table has nested JSON values so when I tried to do
>> get_json_object(<column>,'$.<key>') this serde doesn't work in that case.
>> It throws an error. I'll email the developer too.
>>
>> When you tried did you try this on a cluster of nodes or on a single
>> instance?
>>
>>
>> On Mon, Sep 17, 2012 at 2:38 PM, Connell, Chuck <Chuck.Connell@nuance.com
>> > wrote:
>>
>>> Go to the Downloads link on the project page, near the upper right.
>>>
>>>
>>> ------------------------------
>>> *From:* Mark Golden [mark.golden1744@gmail.com]
>>> *Sent:* Monday, September 17, 2012 5:32 PM
>>> *To:* Connell, Chuck
>>> *Subject:* Re: hive json serde
>>>
>>> Hey Chuck,
>>>
>>> Where did you download the prebuild jar from?
>>>
>>> On Mon, Sep 17, 2012 at 12:10 PM, Connell, Chuck <
>>> Chuck.Connell@nuance.com> wrote:
>>>
>>>> I used his pre-built jar. No need to compile anything.****
>>>>
>>>> ** **
>>>>
>>>> Be sure to add “ --auxpath /path/to/jar/dir “ to the Hive command line.
>>>> ****
>>>>
>>>> ** **
>>>>
>>>> Chuck****
>>>>
>>>> ** **
>>>>
>>>> ** **
>>>>
>>>> ** **
>>>>
>>>> *From:* Connell, Chuck [mailto:Chuck.Connell@nuance.com]
>>>> *Sent:* Monday, September 17, 2012 3:06 PM
>>>> *To:* user@hive.apache.org
>>>> *Subject:* RE: hive json serde****
>>>>
>>>> ** **
>>>>
>>>> I just finished testing this one. No problems found. The developer is
>>>> also quite responsive to issues raised. I encouraged him to submit it to
>>>> the Hive dev team as core code.****
>>>>
>>>> ** **
>>>>
>>>> https://github.com/rcongiu/Hive-JSON-Serde/****
>>>>
>>>> ** **
>>>>
>>>> Chuck Connell****
>>>>
>>>> Nuance R&D Data Team****
>>>>
>>>> Burlington, MA****
>>>>
>>>> ** **
>>>>
>>>> ** **
>>>>
>>>> *From:* Mark Golden [mailto:mark.golden1744@gmail.com<ma...@gmail.com>]
>>>>
>>>> *Sent:* Monday, September 17, 2012 2:56 PM
>>>> *To:* user@hive.apache.org
>>>> *Subject:* hive json serde****
>>>>
>>>> ** **
>>>>
>>>> Hi,
>>>>
>>>> I'm looking for a hive json serde that works well. Any suggestions? I
>>>> did a quick google and found a few but none of them are complete.
>>>>
>>>> Thanks,
>>>> Mark.****
>>>>
>>>
>>>
>>
>
RE: hive json serde
Posted by "Connell, Chuck" <Ch...@nuance.com>.
A few things that should help...
- There are three ways to handle JSON within a Hive table, get_json_object, json_tuple, and JSON SerDe. These are separate mechanisms. So if you want to use get_json_object, you don't need to load a SerDe.
- With a SerDe, Hive understands JSON fields natively, so you can just use the plain field names, no special function call at all.
- I'm not sure if auxpath accepts a relative path, but I know the full path works.
Chuck
________________________________
From: Mark Golden [mark.golden1744@gmail.com]
Sent: Monday, September 17, 2012 5:58 PM
To: Connell, Chuck
Cc: user@hive.apache.org
Subject: Re: hive json serde
It works now. Looks like there is a bug in the code.
if you do hive --auxpath ./serde then I get an error but if I get the full path as
hive --auxpath /var/lib/hdfs/serde/ then get_json_object() works.
Thanks for your help. Appreciate it.
CCing hive user group as well.
On Mon, Sep 17, 2012 at 2:54 PM, Mark Golden <ma...@gmail.com>> wrote:
:-) Thanks. I downloaded and got it compiled as well.
My table has nested JSON values so when I tried to do get_json_object(<column>,'$.<key>') this serde doesn't work in that case. It throws an error. I'll email the developer too.
When you tried did you try this on a cluster of nodes or on a single instance?
On Mon, Sep 17, 2012 at 2:38 PM, Connell, Chuck <Ch...@nuance.com>> wrote:
Go to the Downloads link on the project page, near the upper right.
________________________________
From: Mark Golden [mark.golden1744@gmail.com<ma...@gmail.com>]
Sent: Monday, September 17, 2012 5:32 PM
To: Connell, Chuck
Subject: Re: hive json serde
Hey Chuck,
Where did you download the prebuild jar from?
On Mon, Sep 17, 2012 at 12:10 PM, Connell, Chuck <Ch...@nuance.com>> wrote:
I used his pre-built jar. No need to compile anything.
Be sure to add “ --auxpath /path/to/jar/dir “ to the Hive command line.
Chuck
From: Connell, Chuck [mailto:Chuck.Connell@nuance.com<ma...@nuance.com>]
Sent: Monday, September 17, 2012 3:06 PM
To: user@hive.apache.org<ma...@hive.apache.org>
Subject: RE: hive json serde
I just finished testing this one. No problems found. The developer is also quite responsive to issues raised. I encouraged him to submit it to the Hive dev team as core code.
https://github.com/rcongiu/Hive-JSON-Serde/
Chuck Connell
Nuance R&D Data Team
Burlington, MA
From: Mark Golden [mailto:mark.golden1744@gmail.com]
Sent: Monday, September 17, 2012 2:56 PM
To: user@hive.apache.org<ma...@hive.apache.org>
Subject: hive json serde
Hi,
I'm looking for a hive json serde that works well. Any suggestions? I did a quick google and found a few but none of them are complete.
Thanks,
Mark.
Re: hive json serde
Posted by Mark Golden <ma...@gmail.com>.
It works now. Looks like there is a bug in the code.
if you do hive --auxpath ./serde then I get an error but if I get the full
path as
hive --auxpath /var/lib/hdfs/serde/ then get_json_object() works.
Thanks for your help. Appreciate it.
CCing hive user group as well.
On Mon, Sep 17, 2012 at 2:54 PM, Mark Golden <ma...@gmail.com>wrote:
> :-) Thanks. I downloaded and got it compiled as well.
>
> My table has nested JSON values so when I tried to do
> get_json_object(<column>,'$.<key>') this serde doesn't work in that case.
> It throws an error. I'll email the developer too.
>
> When you tried did you try this on a cluster of nodes or on a single
> instance?
>
>
> On Mon, Sep 17, 2012 at 2:38 PM, Connell, Chuck <Ch...@nuance.com>wrote:
>
>> Go to the Downloads link on the project page, near the upper right.
>>
>>
>> ------------------------------
>> *From:* Mark Golden [mark.golden1744@gmail.com]
>> *Sent:* Monday, September 17, 2012 5:32 PM
>> *To:* Connell, Chuck
>> *Subject:* Re: hive json serde
>>
>> Hey Chuck,
>>
>> Where did you download the prebuild jar from?
>>
>> On Mon, Sep 17, 2012 at 12:10 PM, Connell, Chuck <
>> Chuck.Connell@nuance.com> wrote:
>>
>>> I used his pre-built jar. No need to compile anything.****
>>>
>>> ** **
>>>
>>> Be sure to add “ --auxpath /path/to/jar/dir “ to the Hive command line.*
>>> ***
>>>
>>> ** **
>>>
>>> Chuck****
>>>
>>> ** **
>>>
>>> ** **
>>>
>>> ** **
>>>
>>> *From:* Connell, Chuck [mailto:Chuck.Connell@nuance.com]
>>> *Sent:* Monday, September 17, 2012 3:06 PM
>>> *To:* user@hive.apache.org
>>> *Subject:* RE: hive json serde****
>>>
>>> ** **
>>>
>>> I just finished testing this one. No problems found. The developer is
>>> also quite responsive to issues raised. I encouraged him to submit it to
>>> the Hive dev team as core code.****
>>>
>>> ** **
>>>
>>> https://github.com/rcongiu/Hive-JSON-Serde/****
>>>
>>> ** **
>>>
>>> Chuck Connell****
>>>
>>> Nuance R&D Data Team****
>>>
>>> Burlington, MA****
>>>
>>> ** **
>>>
>>> ** **
>>>
>>> *From:* Mark Golden [mailto:mark.golden1744@gmail.com<ma...@gmail.com>]
>>>
>>> *Sent:* Monday, September 17, 2012 2:56 PM
>>> *To:* user@hive.apache.org
>>> *Subject:* hive json serde****
>>>
>>> ** **
>>>
>>> Hi,
>>>
>>> I'm looking for a hive json serde that works well. Any suggestions? I
>>> did a quick google and found a few but none of them are complete.
>>>
>>> Thanks,
>>> Mark.****
>>>
>>
>>
>
RE: hive json serde
Posted by "Connell, Chuck" <Ch...@nuance.com>.
I used his pre-built jar. No need to compile anything.
Be sure to add " --auxpath /path/to/jar/dir " to the Hive command line.
Chuck
From: Connell, Chuck [mailto:Chuck.Connell@nuance.com]
Sent: Monday, September 17, 2012 3:06 PM
To: user@hive.apache.org
Subject: RE: hive json serde
I just finished testing this one. No problems found. The developer is also quite responsive to issues raised. I encouraged him to submit it to the Hive dev team as core code.
https://github.com/rcongiu/Hive-JSON-Serde/
Chuck Connell
Nuance R&D Data Team
Burlington, MA
From: Mark Golden [mailto:mark.golden1744@gmail.com]
Sent: Monday, September 17, 2012 2:56 PM
To: user@hive.apache.org<ma...@hive.apache.org>
Subject: hive json serde
Hi,
I'm looking for a hive json serde that works well. Any suggestions? I did a quick google and found a few but none of them are complete.
Thanks,
Mark.
RE: hive json serde
Posted by "Connell, Chuck" <Ch...@nuance.com>.
I just finished testing this one. No problems found. The developer is also quite responsive to issues raised. I encouraged him to submit it to the Hive dev team as core code.
https://github.com/rcongiu/Hive-JSON-Serde/
Chuck Connell
Nuance R&D Data Team
Burlington, MA
From: Mark Golden [mailto:mark.golden1744@gmail.com]
Sent: Monday, September 17, 2012 2:56 PM
To: user@hive.apache.org
Subject: hive json serde
Hi,
I'm looking for a hive json serde that works well. Any suggestions? I did a quick google and found a few but none of them are complete.
Thanks,
Mark.