mongoGridFS (Type of variable)

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Management of Mongo files

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mongoGridFS (Type of variable)

In french: mongoGridFS

The mongoGridFS type is used to define the advanced characteristics of a file system for a MongoDB database. The characteristics of this file system can be defined and modified using different WLanguage properties.

Remark: See Declaring a variable for more details on the declaration of this type of variable and the use of WLanguage properties.

Versions 24 and later

This type of variable is now available for WEBDEV sites in Linux.

This type of variable is now available for WINDEV applications in Linux.

New in version 24

This type of variable is now available for WEBDEV sites in Linux.

This type of variable is now available for WINDEV applications in Linux.

This type of variable is now available for WEBDEV sites in Linux.

This type of variable is now available for WINDEV applications in Linux.

Example

cntMDB is mongoConnection("mongodb://db1.example.net")
fs is mongoGridFS
fs.Databases = cnxMDB.Databases["CRM"]
fs.Prefix = "myfs"
Trace(MongoGridFSListFile(fs))

Declaration

MyVariable is mongoGridFS(<Database>, <Prefix>)

<Database>: Character string with quotes

MongoDB database containing the file system.

<Prefix>: Character string with quotes

Prefix of collection.
The files will be stored in the collections in the following format: <prefix>.files and <prefix>.chunck.

Remarks

Properties specific to the description of mongoGridFS variables

The following properties can be used to handle a MongoDB file system:

Property name	Type used	Effect

Database	mongoDatabase variable	Database containing the file system.
Prefix	Character string	Prefix of collection. The files will be stored in the collections in the following format: <prefix>.files and <prefix>.chunck.

Functions that use the mongoGridFS type

The following functions use the mongoGridFS type:


Versions 22 and later MongoGridFSDeleteFile New in version 22 MongoGridFSDeleteFile MongoGridFSDeleteFile	Deletes a file identified by its name from a MongoDB file system.
Versions 22 and later MongoGridFSDeleteFileById New in version 22 MongoGridFSDeleteFileById MongoGridFSDeleteFileById	Deletes a file identified by its identifier from a MongoDB file system.
Versions 22 and later MongoGridFSGetFile New in version 22 MongoGridFSGetFile MongoGridFSGetFile	Retrieves (on the local computer) a file identified by its name and found in a MongoDB file system.
Versions 22 and later MongoGridFSGetFileById New in version 22 MongoGridFSGetFileById MongoGridFSGetFileById	Retrieves (on the local computer) a file identified by its identifier and found in a MongoDB file system.
Versions 23 and later MongoGridFSGetFileInfo New in version 23 MongoGridFSGetFileInfo MongoGridFSGetFileInfo	Allows you to get information about a MongoDB file (gridFS).
Versions 22 and later MongoGridFSListFile New in version 22 MongoGridFSListFile MongoGridFSListFile	Retrieves the list of MongoDB files found in the MongoDB file system (gridFS).
Versions 22 and later MongoGridFSSendFile New in version 22 MongoGridFSSendFile MongoGridFSSendFile	Copies a file from the local computer to a MongoDB file system (gridFS).

Remark: These functions can also be used to handle a Mongo database. In this case, the prefix corresponds to the default value "fs".

Prefixed syntaxes are also available:


Versions 25 and later <mongoGridFS variable>.DeleteFile New in version 25 <mongoGridFS variable>.DeleteFile <mongoGridFS variable>.DeleteFile	Deletes a file identified by its name from a MongoDB file system.
Versions 25 and later <mongoGridFS variable>.DeleteFileById New in version 25 <mongoGridFS variable>.DeleteFileById <mongoGridFS variable>.DeleteFileById	Deletes a file identified by its identifier from a MongoDB file system.
Versions 25 and later <mongoGridFS variable>.GetFile New in version 25 <mongoGridFS variable>.GetFile <mongoGridFS variable>.GetFile	Retrieves (on the local computer) a file identified by its name and found in a MongoDB file system.
Versions 25 and later <mongoGridFS variable>.GetFileById New in version 25 <mongoGridFS variable>.GetFileById <mongoGridFS variable>.GetFileById	Retrieves (on the local computer) a file identified by its identifier and found in a MongoDB file system.
Versions 25 and later <mongoGridFS variable>.GetFileInfo New in version 25 <mongoGridFS variable>.GetFileInfo <mongoGridFS variable>.GetFileInfo	Used to get information about a MongoDB file (gridFS).

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.