//tag::ref-doc[]
= MongoDB Source
This source polls data from MongoDB.
This source is fully based on the `MongoDataAutoConfiguration`, so refer to the
https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-nosql.html#boot-features-mongodb[Spring Boot MongoDB Support]
for more information.
== Options
The **$$mongodb$$** $$source$$ has the following options:
//tag::configuration-properties[]
$$mongodb.supplier.collection$$:: $$The MongoDB collection to query.$$ *($$String$$, default: `$$<none>$$`)*
$$mongodb.supplier.query$$:: $$The MongoDB query.$$ *($$String$$, default: `$${ }$$`)*
$$mongodb.supplier.query-expression$$:: $$The SpEL expression in MongoDB query DSL style.$$ *($$Expression$$, default: `$$<none>$$`)*
$$mongodb.supplier.split$$:: $$Whether to split the query result as individual messages.$$ *($$Boolean$$, default: `$$true$$`)*
$$mongodb.supplier.update-expression$$:: $$The SpEL expression in MongoDB update DSL style.$$ *($$Expression$$, default: `$$<none>$$`)*
//end::configuration-properties[]
Also see the https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html[Spring Boot Documentation] for additional `MongoProperties` properties.
See and `TriggerProperties` for polling options.
//end::ref-doc[]
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