MongoGridFSGetFile (Function)

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MongoGridFSGetFile (Function)

In french: MongoGridFSRécupèreFichier

Retrieves (on the local computer) a file identified by its name and found in a MongoDB file system.

Note: To retrieve a file identified from its identifier, use MongoGridFSGetFileById.

Versions 24 and later

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

New in version 24

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

Example

MongoGridFSGetFile(cnt..Database["CRM"], "product.png", ...
fDataDir() + ["\"] + "product.png")

sDir is string = fSelectDir(SysDir(srDownloads), ...
"Select the download directory")
IF sDir<>"" THEN
MongoGridFSGetFile(gclGridFS,TABLE_GridFS.COL_Name, ...
CompleteDir(sDir) + TABLE_GridFS.COL_Name)
ToastDisplay("Retrieval successfully performed.")
END

Syntax

<Result> = MongoGridFSGetFile(<File system> , <Name of file to retrieve> , <Name of local file>)

<Result>: Boolean

True if the operation was performed,
False if a problem occurred. ErrorInfo is used to identify the error.

<File system>: mongoGridFS or mongoDatabase variable

File system of MongoDB database to use. Corresponds to:
the name of mongoGridFS variable corresponding to the Mongo file system.
the name of mongoDatabase variable corresponding to the MongoDB database. In this case, the file system is using the "fs" prefix.

<Name of file to retrieve>: Character string with quotes

Name of file found in the MongoDB file system that will be retrieved on the local computer.

<Name of local file>: Character string with quotes

Path and name of file retrieved on the local computer.

Related Examples:

Unit examples (WINDEV): Native access to MongoDB

[ + ] This example shows how to use the main functions of native access to MongoDB databases: adding data, reading (searching), modifying and deleting data in the database. The example also shows functions for saving files in the MongoDB GridFS data system.

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