WP Get data context
WP Get data context ( wpDoc ) : Object
| Parameter | Type | Description | |
|---|---|---|---|
| wpDoc | Object | → | 4D Write Pro document |
| Function result | Object | ← | Data context object |
This command is not thread-safe, it cannot be used in preemptive code.
Description
The WP Get data context command returns the data context of the wpDoc document. Data contexts are defined using the WP SET DATA CONTEXT command.
In wpDoc, pass the 4D Write Pro document whose data context you want to get.
Example
You can get a data context from a document and reuse it in another method within the same process.
The following method sets a data context:
// method1
var $person: Object
var $wpArea : Object
$wpArea:=WP New()
// Create person object
$person:=New object()
$person.firstName:="John"
$person.lastName:="Doe"
// Set context using the person object
WP SET DATA CONTEXT($wpArea;$person)
method2($wpArea) //call the other method
method2 might look something like:
//method2
#DECLARE($document Object)
var $context : Object
$context:=WP Get data context($document)
ALERT(JSON Stringify($context)) // Displays {"firstName":"John","lastName":"Doe"}
See also
Blog post - ORDA and 4D Write Pro : The power couple!
WP SET DATA CONTEXT