//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[]
Properties grouped by prefix:
=== mongodb.supplier
$$collection$$:: $$The MongoDB collection to query.$$ *($$String$$, default: `$$<none>$$`)*
$$query$$:: $$The MongoDB query.$$ *($$String$$, default: `$${ }$$`)*
$$query-expression$$:: $$The SpEL expression in MongoDB query DSL style.$$ *($$Expression$$, default: `$$<none>$$`)*
$$split$$:: $$Whether to split the query result as individual messages.$$ *($$Boolean$$, default: `$$true$$`)*
$$update-expression$$:: $$The SpEL expression in MongoDB update DSL style.$$ *($$Expression$$, default: `$$<none>$$`)*
=== spring.data.mongodb
$$authentication-database$$:: $$Authentication database name.$$ *($$String$$, default: `$$<none>$$`)*
$$auto-index-creation$$:: $$Whether to enable auto-index creation.$$ *($$Boolean$$, default: `$$<none>$$`)*
$$database$$:: $$Database name.$$ *($$String$$, default: `$$<none>$$`)*
$$field-naming-strategy$$:: $$Fully qualified name of the FieldNamingStrategy to use.$$ *($$Class<?>$$, default: `$$<none>$$`)*
$$host$$:: $$Mongo server host. Cannot be set with URI.$$ *($$String$$, default: `$$<none>$$`)*
$$password$$:: $$Login password of the mongo server. Cannot be set with URI.$$ *($$Character[]$$, default: `$$<none>$$`)*
$$port$$:: $$Mongo server port. Cannot be set with URI.$$ *($$Integer$$, default: `$$<none>$$`)*
$$replica-set-name$$:: $$Required replica set name for the cluster. Cannot be set with URI.$$ *($$String$$, default: `$$<none>$$`)*
$$uri$$:: $$Mongo database URI. Cannot be set with host, port, credentials and replica set name.$$ *($$String$$, default: `$$mongodb://localhost/test$$`)*
$$username$$:: $$Login user of the mongo server. Cannot be set with URI.$$ *($$String$$, default: `$$<none>$$`)*
$$uuid-representation$$:: $$Representation to use when converting a UUID to a BSON binary value.$$ *($$UuidRepresentation$$, default: `$$java-legacy$$`, possible values: `UNSPECIFIED`,`STANDARD`,`C_SHARP_LEGACY`,`JAVA_LEGACY`,`PYTHON_LEGACY`)*
//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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