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Version: 5.1.1.0

Mongo DB Reader

Description​

The MongoDB Reader is a channel which can read documents from a MongoDB. The filtering can be customized and it is possible to add dynamic parameters that can be set at runtime. The channel returns a JSON message.

Creation​

To create a MongoDB Reader follow the steps described in the general description of Channel.md

Configuration​

The dialog to configure the Database Reader looks like: mongodb-reader-config.png

  • Database The selected database connection.
  • Filter Add a filter for your documents. See the official MongoDB documentation for examples: Query your data In the filter text you may add variable references in the form $(name). E.g. if you enter a filter {"user":"$(username)"} the channel gets a new input parameter named username.
  • Projection Projection specification. See the official MongoDB documentation for examples of projections: Set which fields are returned In the projection text you may add variable references in the form $(name). E.g. if you enter a projection {"_id":0, user:1, "status": $(showStatus)} the channel gets a new input parameter named showStatus.
  • Collection is set by parameter If checked the collection is set in the Call otherwise the collection is set in text field.
  • Collection the collection from where to read the document