MongoGridFSGetFile (Function)

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Managing databases

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Managing Mongo files

Prefix syntax

MongoGridFSGetFile

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Constants for managing MongoDB databases

MongoAdd

MongoAggregationPipeline

MongoCreate (Example)

MongoCreate

MongoCreateCollection (Example)

MongoCreateCollection

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MongoFind

MongoGridFSDeleteFile

MongoGridFSDeleteFileByID

MongoGridFSGetFile

MongoGridFSGetFileByID

MongoGridFSGetFileInfo

MongoGridFSListFile

MongoGridFSSendFile

MongoInfo

MongoModifyAll

MongoModifyOne

mongoCollection

mongoCollectionOption

mongoConnection

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mongoFindOption

mongoGridFS

mongoGridFSFileInfo

mongoResult

mongoWriteConcern

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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.

Remark: To retrieve a file using its identifier, use MongoGridFSGetFileByID.

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 occurs. ErrorInfo is used to identify the error.

<File system>: mongoGridFS or mongoDatabase variable

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

<Name of file to retrieve>: Character string

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

<Name of local file>: Character string

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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