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  • Properties specific to the description of mongoWriteConcern variables
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Stored procedures
mongoWriteConcern (Type of variable)
In french: mongoOptionEcriture
The mongoWriteConcern type is used to define the level of acknowledgment of receipt requested for the write operations in a stand-alone mongod, in a set of replicas or in fragmented clusters. The characteristics of these options can be defined and changed using different WLanguage properties.
Remarks:
  • This type of variable is used by the mongoCollection variables.
  • For more details on the declaration of this type of variable and the use of WLanguage properties, see Declaring a variable.
Example
MyCollection.WriteConcern.Mode = mwcMajority
Remarks

Properties specific to the description of mongoWriteConcern variables

The following properties can be used to handle the options for writing into a Mongo collection:
Property nameType usedEffect
LogBoolean
  • True to write a trace of the write operation into the log.
  • False otherwise.
ModeInteger constantMinimum number of nodes that must have acknowledged the process to consider that the writing is performed. The following values are available:
  • mwcDefault: A single node must have acknowledged the process to consider that the writing is performed.
  • mwcMajority: Most of the nodes must have acknowledged the process to consider that the writing is performed.
  • mwcTag: The number of nodes is the one defined in a pre-configuration defined on the server. In this case, .Tag must be specified.
  • mwcUnacknowledged: No node must have acknowledged the process to consider that the writing is performed. Caution, no error is returned in this case.
  • Minimum number of nodes that must have acknowledged the process (strictly positive integer).
TagCharacter stringName of server pre-configuration.
TimeoutInteger ou Duration
  • Maximum timeout to perform a writing. The write operations are considered as failed after this timeout.
  • 0 for no write timeout.
This property can correspond to:
  • an integer corresponding to the number of seconds,
  • a Duration variable,
  • the duration in a readable format (e.g., 1 s or 10 ms).
Minimum version required
  • Version 22
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Last update: 05/26/2022

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