Is bulkwrite with aggregation pipeline supported ?

[weswes]

It seems not supported as I get this error:

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com.mongodb.MongoCommandException: Command failed with error -1: 'Unknown error: class java.util.ArrayList cannot be cast to class de.bwaldvogel.mongo.bson.Document (java.util.ArrayList is in module java.base of loader 'bootstrap'; de.bwaldvogel.mongo.bson.Document is in unnamed module of loader 'app')' on server 127.0.0.1:57611. The full response is {"$err": "Unknown error: class java.util.ArrayList cannot be cast to class de.bwaldvogel.mongo.bson.Document (java.util.ArrayList is in module java.base of loader 'bootstrap'; de.bwaldvogel.mongo.bson.Document is in unnamed module of loader 'app')", "errmsg": "Unknown error: class java.util.ArrayList cannot be cast to class de.bwaldvogel.mongo.bson.Document (java.util.ArrayList is in module java.base of loader 'bootstrap'; de.bwaldvogel.mongo.bson.Document is in unnamed module of loader 'app')", "ok": 0}
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[tresni]

I just ran into this myself trying to use an aggregation pipeline with an updateMany. The problem starts here

mongo-java-server/core/src/main/java/de/bwaldvogel/mongo/backend/AbstractMongoDatabase.java

Line 319 in 03b38aa

Document update = (Document) updateObj.get("u");

According to the MongoDB update command reference, in 4.2 this was changed to support either a document or a pipeline, but mongo-java-server only supports a single document.