Call chain

Call chain : Collection

Parámetros	Tipo		Descripción
Resultado	Collection	←	Collection of objects describing the call chain within a process

Historia

Lanzamiento	Modificaciones
20 R9	Soporte de la propiedad formula

Descripción

The Call chain command returns a collection of objects describing each step of the method call chain within the current process. Ofrece la misma información que la ventana Depurador. It has the added benefit of being able to be executed from any 4D environment, including compiled mode.

The command facilitates debugging by enabling the identification of the method or formula called, the component that called it, and the line number where the call was made. Each object in the returned collection contains the following properties:

Propiedad	Tipo	Description	Ejemplo
database	Text	Name of the database calling the method (to distinguish host methods and component methods)	"database":"contactInfo"
formula	Text (si lo hay)	Contents of the current line of code at the current level of the call chain (raw text). Corresponde al contenido de la línea referenciada por la propiedad line en el archivo fuente indicado por el método. If the source code is not available, formula property is omitted (Undefined).	"var $stack:=Call chain"
línea	Integer	Número de línea de llamada al método	"line":6
name	Text	Nombre del método llamado	"name":"On Load"
type	Text	Type of the method: "projectMethod" "formObjectMethod" "formmethod" "databaseMethod" "triggerMethod" "executeOnServer" (when calling a project method with the Execute on Server attribute) "executeFormula" (when executing a formula via PROCESS 4D TAGS or the evaluation of a formula in a 4D Write Pro document) "classFunction" "formMethod"	"type":"formMethod"

nota

Para que este comando pueda operar en modo compilado, la verificación de rango no debe estar deshabilitada.

Ejemplo

The following code returns a collection of objects containing information about the method call chain:

var $currentCallChain : Collection
$currentCallChain:=Call chain

If a project method is executed, the call chain could contain (for example):

[
    {
        "type":"projectMethod",
        "name":"detailForm",
        "line":1,
        "database":"myDatabase"
    }
]

If a form object method is executed, the call chain could contain (for example):

[
    {
        "type":"formObjectMethod",
        "name":"detailForm.Button",
        "line":1,
        "database":"myDatabase"
    },
    {
        "type":"formMethod",
        "name":"detailForm",
        "line":2,
        "database":"myDatabase"
    },
    {
        "type":"projectMethod",
        "name":"showDetailForm",
        "line":2,
        "database":"myDatabase"
    }
]

Propiedades

Número de comando	1662
Hilo seguro	✓