Description:
Set or get global variable for/from QVS.
Syntax:
Qenv(v,x)
Note:
The function sets global variable v, assigns value x to it for the controller QVS and returns true when the assignment succeeds. When parameter x is absent, the function gets the global variable from QVS.
In the QVS application, global variables are public and a script file can invoke any global variable.
Will be parsed as env() function when the controller QVS isn’t configured.
Parameter:
|
v |
Global variable name |
|
x |
Global variable value |
Return value:
Global variable value/Boolean value
Example:
Ø Set global variable for QVS
Create setEnv.splx and upload the file to storage bucket qtc01 in cloud storage platform S3:
|
|
A |
|
|
1 |
=Qenv("gvar1","Sale") |
Set value of global variable gvar1 as Sale. |
Execute script file setEnv.splx through QVS:
|
|
A |
|
|
1 |
=Qconnect("http://54.213.221.123:8080/qvs":"aws-qvs",30,300) |
Connect to QVS service. |
|
2 |
=A1.exec@x("qtc01/setEnv.splx";100) |
Execute script file setEnv.splx on the cloud storage through QVS. |
Ø Get global variable from QVS
Create getEnv.splx and upload the file to storage bucket qtc01 in cloud storage service S3:
|
|
A |
|
|
1 |
=Qenv("gvar1") |
Get value of global variable gvar1. |
|
2 |
=Qfile("qtc01/Employees.txt") |
Get Employees.txt stored in the cloud storage. |
|
3 |
=A2.import@t() |
Retrieve content of A2’s file. |
|
4 |
=A3.select(Post:A1) |
Use global variable to get records where Post value is Sale. |