JSON - Array input

http://krisrice.blogspot.com/2013/02/restful-templates-and-binds.html
Kris's blog post above describes how to use binds in RESTful templates in ORDS. The last part says that when a simple JSON string is POSTed to the template, it is automatically converted into bind variables for the PL/SQL to use.
Question: If we need to supply a complex dataset to the POST handler (e.g. say a web form with both scalar values and multiple nested values), I was wondering if it also accomodates a JSON array e.g.
{"collection_id":"1234",
"members":
     {"firstName":"John", "lastName":"Doe"},
     {"firstName":"Anna", "lastName":"Smith"},
     {"firstName":"Peter", "lastName":"Jones"}
If so, any ideas on how to support this? Of course, the underlying PL/SQL code needs to accept arrays as input parameters.
Any thoughts, examples, ideas much appreciated. Thanks

You will have to use something like PL/JSON to parse the text programatically. It's found here https://github.com/pljson/pljson
They have a bunch of examples as part of the library here : https://github.com/pljson/pljson/tree/master/examples
-kris

Similar Messages

Error from array input

I'm using a DBL array input so the user can set several values.
Now I recognized an error: When the user inputs "0", the VI gives
me a ~"-1E-12", this leads to an error message as I do some range
checking... What's wrong?
This only occurs, when the user manually inputs values. When I preset
the array with values loaded from a config file, everything works fine.

Well, how to add an attachment, when you use www.google.com to post
messages? If somebody wants to have an example vi, send me an email!
I try to explain: this vi is part of the inputs & configuration vi's
of a bigger measurement program (+100 vi's).
It get's its predefined values from global variables. Then it copies
these globals to the local controls. The user can change/add/delete
values in these controls (in this case an array input) and when he/she
is ready, he/she just presses an ok-button. Then the vi does a range check
and when all is ok, the values from the local array input is copied
back to the global variable.
The problem now: Normally the user loads a config file, all values are
read and copied into the global variables. Then the user is force
d to
check all values in those configuration-vi's by pressing "Ok" in every
sub-vi and everything is ok. But the last time I didn't use a config file
and tried to input all the values from the configuration vi's. That's
when I noticed this misbehavior: I tried to input a "0", but the vi
thought of getting ~"-1E-12" (found out via debugging mode).
Any help/advice?
JRA wrote in message news:<[email protected]>...
> Gerd, this may help if you could paste a VI which exhibits this
> behavior in this discussion. I'm not quite sure what you are seeing
> yet. Attach an example to a message and we will take a look at it.

Find maximum in array inputs

Dear All,
I would like to find and replace the highest value among a set of values being polled. I only manage to find the highest value if i compare the new value with the old value using a shift register with a single value (element) only.
Right now, if i am dealing with array inputs instead of single value, how should i do it?
Example:
New Input1=[5
                     4
                     3
                     2
                     1]
Input 2= [ 4
   3
   5
   3
   3]
Therefore the answer should be x= [5
     4
     5
     3
     3]
Then if another new input array has higher values then x, the answer will again be modified.The values are compared by row versus row of each elements in the array. The final answer should be in array form.
Can anyone help out with this? Thank you so much!
Solved!
Go to Solution.

One way, this is the first one that jumped to mind. May be an easier one out there.
Message Edited by for(imstuck) on 04-22-2010 10:37 AM
CLA, LabVIEW Versions 2010-2013
Attachments:
array compare.PNG ‏6 KB

Transforming ABAP internal table to JSON array (rather than object)

Is there an easy way to do this using the standard CALL TRANSFORMATION? Here's what I'm doing:
"ABAP to JSON
   writer = cl_sxml_string_writer=>create( type = if_sxml=>co_xt_json ).
   CALL TRANSFORMATION id SOURCE ARRAY = lt_table
                          RESULT XML writer.
   lv_json = writer->get_output( ).
Now this generates JSON with an object named ARRAY in the proper format with sub-objects... but I don't want an object named ARRAY, I just want an unnamed array.
I searched through the documentation, the asJSON documentation seems to imply this should be possible, but doesn't specify any way to accomplish such a thing. Leaving the name blank just generates an error.
Tried a few transformation OPTIONS as well, but none of them seem to accomplish this.
It's not a huge deal to use an object instead (although we're trying to squeeze every microsecond of performance out of this call), or even to just write my own darn transformation, but I guess I'm surprised SAP doesn't seem to support this functionality with CALL TRANSFORMATION. Am I missing something? Please tell me I'm missing something

I honestly can't remember why I asked this question (I think I was just confused about why the object needed a name but that turned out to not really be a problem), but here's what I ended up doing, in case it's helpful:
EDIT: I noticed above someone asked about uppercasing the JSON -- I also had to do this because the REST service I was calling required it. You can see below I actually convert back to string to do this, though there may be a more elegant solution.
*for call to cl_http_client=>create_by_destination
   constants: lc_dest    TYPE rfcdest value 'MILEMAKER'.
*local structures for handling input/output
   DATA: ls_postal_dist type ZST_POSTAL_DIST,
         ls_postal_conv type ZST_POSTAL_DIST,
         lt_postal_conv type ZTT_POSTAL_DIST,
*for call to cl_http_client=>create_by_destination
         lo_CLIENT type ref to IF_HTTP_CLIENT,
         ls_RANDMCNALLY_JSON type ZST_RANDMCNALLY_JSON,
         lt_RANDMCNALLY_JSON type table of ZST_RANDMCNALLY_JSON,
         lv_HTTP_REASON type string,
         lv_HTTP_CODE type i,
*JSON conversion
         lo_writer TYPE REF TO cl_sxml_string_writer,
         lv_json_in TYPE xstring,
         lv_json_out TYPE xstring,
         lv_json_string type string,
         lo_conv type ref to CL_ABAP_CONV_IN_CE,
         lo_conv2 type ref to CL_ABAP_CONV_OUT_CE,
*return parameters and error handlers
         lo_cxroot   TYPE REF TO cx_root,
         lv_message type string,
         lv_PAR1 LIKE SY-MSGV1,
         lv_PAR2 LIKE SY-MSGV2,
         lv_PAR3 LIKE SY-MSGV3,
         ls_return type bapiret2. "return structure
[snip]
*set request parameters
       CALL METHOD lo_client->request->SET_CONTENT_TYPE('application/json').
       CALL METHOD lo_client->request->SET_METHOD('POST').
*convert data to JSON
       lo_writer = cl_sxml_string_writer=>create( type = if_sxml=>co_xt_json ).
       CALL TRANSFORMATION id SOURCE routes = lt_RANDMCNALLY_JSON initial_components = 'suppress' RESULT XML lo_writer.
       lv_json_in = lo_writer->get_output( ).
*attach data to body
       CALL METHOD lo_client->request->SET_DATA
         EXPORTING
           data = lv_json_in.
*get JSON text in string format for testing
       CALL METHOD CL_ABAP_CONV_IN_CE=>CREATE
         EXPORTING
           INPUT       = lv_json_in
           ENCODING    = 'UTF-8'
           REPLACEMENT = '?'
           IGNORE_CERR = ABAP_TRUE
         RECEIVING
           CONV        = lo_conv.
       CALL METHOD lo_conv->READ
         IMPORTING
           DATA = lv_json_string.
*send HTTP POST call to RandMcNally webservice
       call method lo_client->send
* exporting timeout = lc_timeout
        exceptions http_communication_failure = 1
        http_invalid_state = 2
        http_processing_failed = 3
        others = 4.
       if sy-subrc <> 0.
         CALL METHOD lo_client->get_last_error
           IMPORTING
             message = lv_message.
         CONCATENATE 'HTTP POST:' lv_message into lv_message.
         move lv_message to ls_return-message.
         append ls_return to return.
       endif.
*receive data back
       CALL METHOD lo_client->receive
         EXCEPTIONS
           http_communication_failure = 1
           http_invalid_state         = 2
           http_processing_failed     = 3
           others                     = 4.
*pass errors back, if any
       if sy-subrc <> 0.
         clear ls_return.
         ls_return-type = 'E'.
         CALL METHOD lo_client->get_last_error
           IMPORTING
             message = lv_message.
         move sy-subrc to lv_json_string.
         CONCATENATE 'RECEIVE DATA:' lv_json_string lv_message into ls_return-message SEPARATED BY space.
         append ls_return to return.
       endif.
*get the data (a table in JSON format) from response object
       clear lv_json_out.
       lv_json_out = lo_client->response->GET_DATA( ).
*get the status of the response
       CALL METHOD lo_client->response->GET_STATUS
         IMPORTING
           CODE   = lv_HTTP_CODE
           REASON = lv_HTTP_REASON.
*if response status code not 200 (OK), return error and cease processing
       if lv_http_code <> '200'.
         clear ls_return.
         ls_return-type = 'E'.
         move lv_http_code to lv_json_string.
         CONCATENATE 'GET STATUS:' lv_json_string lv_HTTP_REASON into ls_return-message SEPARATED BY space.
         append ls_return to return.
       ENDIF.
     catch cx_root into lo_cxroot.
     cleanup.
       ls_return-message = lo_cxroot->get_text( ).
       append ls_return to return.
   endtry.
*close channel
   CALL METHOD lo_client->close
     EXCEPTIONS
       http_invalid_state = 1
       others             = 2.
*trying to process after error sometimes results in short dump because lv_json_out contains something other than JSON
   if ls_return is not initial.
     return.
   endif.
   if lv_json_out is not initial.
*convert JSON to string and make it UPPERCASE so that SAP can do transformation
     CALL METHOD CL_ABAP_CONV_IN_CE=>CREATE
       EXPORTING
         INPUT       = lv_json_out
         ENCODING    = 'UTF-8'
         REPLACEMENT = '?'
         IGNORE_CERR = ABAP_TRUE
       RECEIVING
         CONV        = lo_conv.
     CALL METHOD lo_conv->READ
       IMPORTING
         DATA = lv_json_string.
     TRANSLATE lv_json_string to UPPER CASE.
*convert JSON back to xstring
     CALL METHOD CL_ABAP_CONV_OUT_CE=>CREATE
       EXPORTING
         ENCODING    = 'UTF-8'
         REPLACEMENT = '?'
         IGNORE_CERR = ABAP_TRUE
       RECEIVING
         CONV        = lo_conv2.
     lo_conv2->convert( EXPORTING data = lv_json_string
                  IMPORTING buffer = lv_json_out ).
*convert our now UPPERCASE xstring to output table (JSON to ABAP)
     clear lt_randmcnally_json.
     lo_writer = cl_sxml_string_writer=>create( type = if_sxml=>co_xt_json ).
     CALL TRANSFORMATION id OPTIONS value_handling = 'accept_decimals_loss'
                            SOURCE XML lv_json_out
                            RESULT routes = lt_RANDMCNALLY_JSON.
[snip]

Help with 2D array input using a text file

I'm writing a JAva program using BlueJ, which requires me to read info from a text file and put them into an 2D array. I got this error msg and I couldn't gifure out how to fix it. Please help me. Thanks a lot. The program is due tomorrow, please help.
Error message:
NoSuchElementException:
null(in Java.util.StringTokenizer)
Here's the program with the line where the problem is highlighted
import java.io.*;
import java.util.StringTokenizer;
public class ***
// Reads students' test scores from a file and calculate their final grade
public static void main (String[] args) throws IOException
String file1 = "C:/Temp/scores.txt";
int[][] input = new int[25][5];
StringTokenizer tokenizer;
String line;
FileReader fr = new FileReader (file1);
BufferedReader inFile = new BufferedReader (fr);
line = inFile.readLine();
tokenizer = new StringTokenizer (line);
for (int row = 0; row < 25; row++)
for (int col = 0; col < 5; col++)
input[row][col] = Integer.parseInt(tokenizer.nextToken()); --> porblem
This is what the text file looks like:
1 74 85 98
2 97 76 92
3 87 86 77
4 73 85 93
5 99 99 83
6 82 84 95
7 78 83 91
8 84 79 84
9 83 77 90
10 75 78 87
11 98 79 92
12 70 73 95
13 69 80 88
14 81 77 93
15 86 72 80
16 70 76 89
17 71 71 96
18 97 81 89
19 82 90 96
20 95 85 95
21 91 82 88
22 72 94 94

Try this code..(I've tested this code in my machine and it works fine)
          try {
               FileReader fileReader = new FileReader("Z:\\fileInput.txt");
               BufferedReader reader = new BufferedReader(fileReader);
               int[][] fileData = new int[22][4];
               StringTokenizer tokenizer = null;
               String line = reader.readLine();
               int rowCount = 0;
               while(line != null) {
                    tokenizer = new StringTokenizer(line, " ");
                    int columnCount = 0;
                    while(tokenizer.hasMoreTokens()) {
                         fileData[rowCount][columnCount] = Integer.valueOf(tokenizer.nextToken()).intValue();
                         columnCount++;
                    line = reader.readLine();
                    rowCount++;
               fileReader.close();
               System.out.println("Done");
          } catch (FileNotFoundException fnfe) {
               System.out.println("File not found " + fnfe);
          } catch (IOException ioe) {
               System.out.println("IO Exception " + ioe);
The problem with your code is that you should first check whether there are any tokens before doing nextToken().
-Amit

Object array input

Hello, I am trying to input a file that contains an array of object refrences. When doing so I set the array to receive the input array to a larger size than the array being input. Once the array is input however, it resizes the created array to the size of the input array. For instance, I create an array size 10. Input and array size 5. The length of the created array will now be 5. I caught it by using this check:
System.out.println(shapes.length);
shapes = (MyShape[]) objectIn.readObject();
System.out.println(shapes.length);
Any help would be appreciated.
Thanks,
Matt

Hello, I am trying to input a file that contains an
array of object refrences. When doing so I set the
array to receive the input array to a larger size
than the array being input.How do you know it's larger than what's being input? It might be better to use (for example) a Vector so that the array grows automatically as you add items.
Once the array is input
however, it resizes the created array to the size of
the input array. For instance, I create an array
size 10. Input and array size 5. The length of the
created array will now be 5. I caught it by using
this check:
System.out.println(shapes.length);
shapes = (MyShape[]) objectIn.readObject();
System.out.println(shapes.length);It's a bit unclear what your problem is... can you post more code and/or errors?

Arrays to 3D-cluster arrays input Feed into draw Mesh

Hi,
I'm puzzzle with my own algorithm.
I want to grab input then feed into 3D-cluster array . then feed into Mesh parameters array.
The problem i had, I want to take 2 rows, feed into 3D-cluster, then send into mesh parameter,
then redo it with another 2 rows moving down the array.
So i will have 1 line that "move" in the 3D picture control
Attached is my vi.
Attachments:
array-problem.JPG ‏72 KB

Sorry here the VI ..
Attachments:
moving3D-data work3.vi ‏18 KB
zulhairi_1.csv ‏71 KB

Labview Calling DLL with 2D array input and output

Hi all，
    I have to call a dll which a 2D double array as an input and also a 2D double array as an output.The dll is made by me and written in c language , I need it to work  efficiently.
If i define the program in labview like this
The 2 2Darrays sent into CLN were "Array data pointer",then how to define the function in c laguage? just like -----int myfunction (Parameter1,Parameter2,Parameter3,Parameter4)
If the function in the dll is defined like this         int myfunction (double **A, int sx,int sy ,double **B,int ix,int iy),then what will the program in labview will be ?
sx ,sy ix ,iy are the array's size.

ylongwu wrote:
If the function in the dll is defined like this         int myfunction (double **A, int sx,int sy ,double **B,int ix,int iy),then what will the program in labview will be ?
sx ,sy ix ,iy are the array's size.
Your proposed prototype double ** seems to indicate that you want an array of pointers to the rows of the array. That is not how LabVIEW stores multidimensional arrays (nor how this is usually done in C for such arrays).
LabVIEW and most C libraries threat multi dimensional array as one single block of memory where the rows are located one after the other. So as DFGray has already pointed out you should use double * instead as datatype or since you create the DLL yourself and if it doesn't need to be compatible with other environments than LabVIEW change that altogether into:
typedef struct {
   int32 dimSize1;
   int32 dimSize2;
   double elm[1];
} 2DDblArrRec, **2DDblArrHdl;
int myfunction (2DDblArrHdl A, 2DDblArrHdl B);
then change the Call Library Node parameters for the arrays to pass the array as Data Handle (the native LabVIEW datatype) and leave away the extra dimensions since they are already inside the handle structure.
Last but not least if you want to be very fancy you can even use NumericArrayResize() on the output handle to resize it to the correct size before filling in your information and leave away the Initialize Array function on the LabVIEW diagram.
Message Edited by rolfk on 05-26-2010 09:11 AM
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

JSON arrays vs. properties

I'm finding that a JSON response from Raylight may or may not be an array depending on whether there are multiple items. For example, a WebI doc with multiple reports will produce this:
"reports": {
    "report": [
        "id": 2,
        "name": "Report 1",
        "reference": "2.RS",
        "showDataChanges": false
        "id": 1,
        "name": "Report 2",
        "reference": "1.RS",
        "showDataChanges": false
Whereas if there is only one report tab, the result is:
"reports": {
    "report": {
        "id": 2,
        "name": "Report 1",
        "reference": "2.RS",
        "showDataChanges": false
This is a problem, since the report property must be accessed differently. With JQuery, if "report" is an array, I can access the individual reports with:
$.each(json.reports.report,function() { $(this).id });
But the code doesn't work if there is only one report -- it returns the properties of the "report" property instead of report itself. Instead, I have to do:
json.reports.report.id
So, is there any code that can access the "report" properties whether or not it's an array?

When we have arrays in java, why did they provide
arraylist? What is the basic advantage of ArrayList
over Array?
Thanks in advanceLook at the API that would answer your question. All the functionality available for Arraylist is it available for arrays as well.
It is very similar to asking why have String class when you can have an array of chars.
Sun is just trying to make your life easy

DAO in Websphere calling Oracle SP with array input params

Hi,
We have a complex Oracle stored procedure which gets called by the DAO in Websphere 5.1.
The stored procedure takes couple of input array.
Code snippet -
CallableStatement cstmt = con.prepareCall("{call pkg_name.ap_name( ?,?,?,?,?,?,?,?,? )}");
ArrayDescriptor desc = ArrayDescriptor.createDescriptor("STRING_VARRAY", con);
ARRAY arr1 = new ARRAY(desc, con, strArray);
cstmt.setArray(1, arr1);
I get this exception when trying to create Oracle array desciptor -
java.lang.ClassCastException: com/ibm/ws/rsadapter/jdbc/WSJdbcConnection incompatible with oracle/jdbc/OracleConnection
How can I get a OracleJdbcConnection object from WSJdbcConnection?
Is there any way to do this using the WS Jdbc classes?
Is there any other way to pass an array to a callable statement?
TIA.
- vineet

Hi,
We have a complex Oracle stored procedure which gets
called by the DAO in Websphere 5.1.
The stored procedure takes couple of input array.
Code snippet -
CallableStatement cstmt = con.prepareCall("{call
pkg_name.ap_name( ?,?,?,?,?,?,?,?,? )}");
ArrayDescriptor desc =
ArrayDescriptor.createDescriptor("STRING_VARRAY",
con);
ARRAY arr1 = new ARRAY(desc, con, strArray);
cstmt.setArray(1, arr1);
I get this exception when trying to create Oracle
array desciptor -
java.lang.ClassCastException:
com/ibm/ws/rsadapter/jdbc/WSJdbcConnection
incompatible with oracle/jdbc/OracleConnection
How can I get a OracleJdbcConnection object from
WSJdbcConnection?
Is there any way to do this using the WS Jdbc
classes?
Is there any other way to pass an array to a callable
statement?
TIA.
- vineetI am experiencing the same ClassCastException when creating an ArrayDescriptor. It occurs on execution the following line of code:-
oracle.sql.ArrayDescriptorarrayDesc = oracle.sql.ArrayDescriptor.createDescriptor(schema + "." + table, conn);
Java Context: Stateless EJB
J2EE Version: 1.3
JRE Version: 1.4.2
EJB Version: 2.0
J2EE Container: WebSphere v5.1.1.2, build number cf20446.02
Container transaction type: Required (for all remote methods)
Oracle Impl class: oracle.jdbc.xa.client.OracleXADataSource
Oracle driver file: classes12.zip
Oracle Version: 8.1.7.4
Is there a solution to this issue?

Arrays, input, string tokenizer

ConsoleReader console = new ConsoleReader(System.in);
int count_words = 0;
     boolean done = false;
     while(!done)
     {      String input = console.readLine();
          if (input == null)
          done = true;
          else
     StringTokenizer token = new StringTokenizer(input);
          while (token.hasMoreTokens())
          {      token.nextToken();
               count_words++;
String[] list = new String[count_words];
     for (int i = 0; i < 30; i++)
list[i] i= ((String)(token.nextElement()));
System.out.println(count_words);
here is some code i have, i want to convert the tokens read in, and put them into the array, this doesnt work can someone please expand upon this, and help me out,
thanks
where it says list i, it should have square braces around it indicating the array, but for some reason they dont show up

You can replace the whole thing with:
ConsoleReader console = new ConsoleReader(System.in);
String input = " ";
while(input != null) {
     input = console.readLine();
     StringTokenizer token = new StringTokenizer(input);
     String[] list = new String[token.countTokens()];
     for (int x = 0; x < list.length; x++) {
          list[x] = token.nextElement();
     System.out.println(list.length);
}Rather than reinvent the wheel, use methods that already exist. (It could actually be somewhat simpler, but this keeps the general flow of your original code.) Also, the reason that the square brackets are disappearing is that square brackets surrounding the letter i are used to indicate italics on this forum.
Mark

Suggestion: Macros or a way to unroll loops? Integer array input? Shader Model 3 and 4?

I think it would be nice if pixel bender supported a way to unroll loops. In it's current state certain shaders are really awkward to write or just get ugly when they're converted for flash player. I know it wouldn't be that hard for the developers to just unroll constant sized loops. Things such as:
for (int i = 0; i < 10; ++i)
if (foo) { ... }
can be unrolled easily. Either that or add in some code generation feature that allows this with a preprocessor system. Or better yet add in support for loops since it only requires shader model 3 or equivelant from GLSL.
This brings me onto another point. Is there going to be support for Shader Model 4? I'm talking about bitwise operations and integer types. Even if you don't allow native support for byte array adding texture sampling for bytes, shorts, and integers would be nice. Also allowing this to work in flash would be nice with the ability to tell the user they don't have shader model 4 or be able to detect compatability and use a different shader.
Integer arrays would be nice to allow to as input then to the shader. I noticed the reference manual already mentioned:
"NOTE: Pixel Bender 1.0 supports only arrays of floats, and the array size is a compile-time constant. Future versions of Pixel Bender will allow arrays to be declared with a size based on kernel parameters, which will enable parameter-dependent look-up table sizes."
Again support for these features in flash player would be really nice.
Targetting the lowest GPUs is really limiting the true power of pixel bender. I wrote this for fun: http://assaultwars.com/pictures/raycasting6.png which is just a simple real-time voxel raycaster. However, it could be so much more powerful if pixel bender supported more of the GPUs features. Even simple things like custom functions would be really handy in flash player. I'm thinking of this more oriented toward flash games too where more powerful features are unlocked based on the user's GPU.
If this is already planned for a future pixel bender release then nevermind. I didn't see a developers blog or any news about future versions.
Interesting:
http://forums.adobe.com/thread/36659?tstart=60
Apparently Kevin said "Look for them in a future version of the language as cards that support these features become common." in regards to bitwise operators aka Shader Model 4.

Here's an example, not using NetBeans:
import javax.swing.*;
public class TextDemo extends JPanel
    public TextDemo()
        int[] newbinarray = {0, 1, 1};
        StringBuffer sb = new StringBuffer();
        for (int value : newbinarray)
            sb.append(value);
        String st = new String(sb);
        this.add(new JTextField(st));
    private static void createAndShowGUI()
        JFrame frame = new JFrame("TextDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new TextDemo());
        frame.pack();
        frame.setVisible(true);
    public static void main(String[] args)
        javax.swing.SwingUtilities.invokeLater(new Runnable()
            public void run()
                createAndShowGUI();
}

Array to cluster fnc drops one of my array inputs?

Anyone know what may be going on here? Thanks in advance.
Attachments:
Read GPS.vi ‏51 KB

There's a fundamental difference between clusters and arrays. While clusters can have elements of different types in them, the number of elements must be static. It must be known exactly before you press the run button, and it can't change during run-time.
The Array to Cluster function must therefore know in advance how many elements the cluster will contain. It can't wait until run-time to decide this when it actually gets the number of elements in the input array. The way you specify this in advance is by right clicking the Array to Cluster function and selecting Cluster Size from the shortcut menu. Here you can specify statically how big your cluster will be. The default is 9 elements large. So if your input array had 10 elements, you would lose one element. If your input array has 4 elements, the last 5 elements of the cluster will have default values.
Jarrod S.
National Instruments

Generic / variable reference to json array field name

hi -- I have a javascript function that I want to make variable-based, so it can be used throughout my application.
It creates and parses a json object. I ultimately need to reference a field in that object. The field name is the name of database column
that was queried in the called application process.
For example, if the query executed was: select my_id from my_table where my_name = 'the_name', and the object that holds the parsed
AJAX response is jsonobj, then I need to reference: jsonobj.row[0].my_id
I don't want my_id to be hardcoded in the reference. Rather, I want to pass the string 'my_id' into the javascript function (let's call
the variable dest_item_name) and then reference (something like): jsonobj.row[0].<dest_item_name>.
(How) can I do this? Please tell me I can! :)
Thanks,
Carol

Hmmm, well, I thought I described my goal in the first post... but I'll try again.
hi -- I have a javascript function that I want to make variable-based, so it can be used throughout my application.
The function does this:
ajaxRequest = new htmldb_Get(null,&APP_ID.,'APPLICATION_PROCESS=LOOKUP_VALUE',0);
ajaxRequest.addParam('x01', source_item_value); -- equal to 'basin'; this is the value that will be used to lookup the value of dest_column_name
ajaxRequest.addParam('x02', source_column_name); -- equal to 'my_name'; this is the name of the database table column that will be = 'basin'
ajaxRequest.addParam('x03', dest_item_name); -- equal to P3_MY_ID; this is the name of the page item that will be set to the returned value
ajaxRequest.addParam('x04', dest_column_name); -- equal to 'my_id'; this is the name of the table column that gets queried
ajaxRequest.addParam('x05', lookup_table_name); -- my_data; this is the table to query
ajaxResponse = ajaxRequest.get();
if (ajaxResponse) {
var jsonobj= ajaxResponse.parseJSON();
$s(dest_item_name, jsonobj.row[0].my_id);
The goal of this javascript and application procedure is to have a generic method for looking up values
in the database. In the above example, I want to query my_data to get the value of my_id where my_name = 'basin'.
The application procedure LOOKUP_VALUE uses the x variables to construct that SQL query. For the above values, the
returned query is: select my_id from my_data where my_name = 'basin';
Then I set my dest_item_name (P3_MY_ID) to the value in the parsed json object. But as you can see, if I'm querying a different
table with different column names, the reference to jsonobj.row[0].my_id won't work, because the database column name
will be different. I've gotten around this by aliasing the queried field to RETURN_VALUE, so I'm just doing:
$s(dest_item_name, jsonobj.row[0].rerturn_value); -- which works great.
But my goal was to somehow be able to reference the variable dest_item_name (which is the name of the queried database
column) in my $s set statement.
Possible? If so, I'm sure it could come in handy at some point.
Thanks,
Carol

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