Re: RPG, retrieving JSON data from a web service -- RPG400-L

I believe that it may be terminated correctly. In debug when you view a
field the max it will show is the first 1024 characters or so unless you
tell it otherwise.

Booth, you'll need to use something like:

eval MyText:C 5000

in debug to show 5000 characters. But I still think you're better of
loading the JSON to a stream file for now. Much easier to debug. Every
time you post something has changed and we're staring back at square one.

your original examples loading from a stream file were working loading the
docNode. It was after that you weren't using the proper node names to load.

On Mon, Sep 4, 2017 at 11:55 PM, Henrik Rützou <hr@xxxxxxxxxxxx> wrote:

The JSON isn't terminated in 1021 there is someting missing since it must
end with }]

On Tue, Sep 5, 2017 at 2:29 AM, Booth Martin <booth@xxxxxxxxxxxx> wrote:

I've read through Scott's material several times. Used his code.

Clearly

I have missed something.

Currently this code:

MyIFSFile_Name = wURI;
MyIFSFile_NL = %Len(%trim(MyIFSFile_Name));
MyIFSFile_FO = SQFRD;

Exec SQL Set :MyText = Substr(:MyIFSFile, 1, 32000);
wLength = %len(MyText);

gives me:

EVAL MyText
MYTEXT =
....5...10...15...20...25...30...35...40...45...50...55...60
1 '[{"name":"George Washington", "life":"1732-1799", "term":"17'
61 '89-04-30 to 1797-03-04", "party":"No Party"},{"name":"John A'
121 'dams", "life":"1735-1826", "term":"1797-03-04 to 1801-03-04"'
181 ', "party":"Federalist"},{"name":"Thomas Jefferson", "life":"'
241 '1743-1826", "term":"1801-03-04 to 1809-03-04", "party":"Demo'
301 'cratic-Republican"},{"name":"James Madison", "life":"1751-18'
361 '36", "term":"1809-03-04 to 1817-03-04", "party":"Democratic-'
421 'Republican"},{"name":"James Monroe", "life":"1758-1831", "te'
481 'rm":"1817-03-04 to 1825-03-04", "party":"Democratic-Republic'
541 'an"},{"name":"John Quincy Adams", "life":"1767-1848", "term"'
601 ':"1825-03-04 to 1829-03-04", "party":"Democratic-Republican"'
661 '},{"name":"Andrew Jackson", "life":"1767-1845", "term":"1829'
721 '-03-04 to 1837-03-04", "party":"Democratic"},{"name":"Martin'
781 ' Van Buren", "life":"1782-1862", "term":"1837-03-04 to 1841-'
841 '04-04", "party":"Democratic"},{"name":"William Henry Harriso'
901 'n", "life":"1773-1841", "term":"1841-03-04 to 1841-04-04", "'
961 'party":"Whig"},{"name":"John Tyler", "life":"1790-1862", "te'
1021 'rm":'

And then this line:

docnode = yajl_buf_load_tree(%addr(MyText): wLength: errMsg );

gets :

EVAL errMsg
ERRMSG =
....5...10...15...20...25...30...35...40...45...50...55...60
1 'lexical error: invalid char in json text. '

On 9/2/2017 8:21 AM, Bradley Stone wrote:

There is no node named success in your JSON. That's why node is null.

Instead, you have an array of objects with name, life, term and party.
You
need to process through that array and for each object individually.

Processing arrays with YAJL is easy, and I think Jon already posted an
example of how to handle that. It should be in the archives or an older
thread.

Here's a great PDF from Scott that maybe you should spend some time on

to

understand what JSON is, how it works, and how to use YAJL with it:

http://www.scottklement.com/presentations/Working%20with%20J
SON%20in%20RPG.pdf

Bradley V. Stone
www.bvstools.com
MAILTOOL Benefit #11 <https://www.bvstools.com/mailtool.html>: Save
Emails
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