METHOD SET CODE

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4D v20 R7

METHOD SET CODE


METHOD SET CODE ( path ; code {; *} )

Parameter	Type	Description
path	Text, Text array	Text or Text array containing one or more method path(s)
code	Text, Text array	Code of designated method(s)
*	Operator	If passed = command applies to host database when executed from a component (parameter ignored outside of this context)

Description

The METHOD SET CODE command modifies the code of the method(s) designated by the path parameter with the contents passed in the code parameter.

The command can access the existing code of all types of methods: database methods, class definitions, triggers, project methods, form methods and object methods.

If a method does not exist, it is created with the code contents.

Note for projects:

Creating a new method with this command is only possible for database methods, triggers, and project methods.
The code is saved with or without tokens in newly created projects depending on the Include tokens in project source files option in the Preferences.

You can use two types of syntaxes, based either on text arrays, or text variables:

 C_TEXT(tVpath) // text variables

 C_TEXT(tVcode)

 METHOD SET CODE(tVpath;tVcode) // code of a single method

 ARRAY TEXT(arrPaths;0) // text arrays

 ARRAY TEXT(arrCodes;0)

 METHOD SET CODE(arrPaths;arrCodes) // code of several methods

You cannot mix the two syntaxes.

If you pass an invalid pathname, the command does nothing.

When METHOD SET CODE is called, the method attributes are reset by default. However, if the first line of the method code contains valid metadata (expressed in JSON), they are used to specify the method attributes and the first line is not inserted. Example of metadata:

// %attributes = {"invisible":true,"lang":"fr","folder":"Security"}

Note: These metadata are generated automatically by the METHOD GET CODE command. For more information about supported attributes, refer to the description of the METHOD SET ATTRIBUTES command.

Concerning the "folder" property of the metadata:

When this property is present and corresponds to a valid folder, the method is placed in its parent folder,
If this property is not present or if the folder does not exist, the command makes no changes at the parent folder level,
When this property contains an empty string, the method is placed at the root level.

You can execute this command from a component, but in this case, you must pass the * parameter because access to the component code is read-only. If you omit the * parameter in this context, the error -9763 is generated.

Example

This example exports and imports all the project methods of an application:

 $root_t:=Get 4D folder(Database folder)+"methods"+Folder separator

 ARRAY TEXT($fileNames_at;0)

 CONFIRM("Import or export methods?";"Import";"Export")

 

 If(OK=1)

    DOCUMENT LIST($root_t;$fileNames_at)

    For($loop_l;1;Size of array($fileNames_at))

       $filename_t:=$fileNames_at{$loop_l}

       DOCUMENT TO BLOB($root_t+$filename_t;$blob_x)

       METHOD SET CODE($filename_t;BLOB to text($blob_x;UTF8 text without length))

    End for

 Else

    If(Test path name($root_t)#Is a folder)

       CREATE FOLDER($root_t;*)

    End if

    METHOD GET PATHS(Path project method;$fileNames_at)

    METHOD GET CODE($fileNames_at;$code_at)

    For($loop_l;1;Size of array($fileNames_at))

       $filename_t:=$fileNames_at{$loop_l}

       SET BLOB SIZE($blob_x;0)

       TEXT TO BLOB($code_at{$loop_l};$blob_x;UTF8 text without length)

       BLOB TO DOCUMENT($root_t+$filename_t;$blob_x)

    End for

 End if

 SHOW ON DISK($root_t)