Camel mongodb - MongoDbProducer multiple inserts - mongodb

Question

I am trying to do a multiple insert using the camel mongo db component.
My Pojo representation is :
Person {
String firstName;
String lastName;
}
I have a processor which constructs a valid List of Person pojo and is a valid json structure.
When this list of Person is sent to the mongodb producer , on invocation of createDoInsert the type conversion to BasicDBObject fails. This piece of code below looks to be the problem. Should it have more fall backs / checks in place to attempt the list conversion down further below as it fails on the very first cast itself. Debugging the MongoDbProducer the exchange object being received is a DBList which extends DBObject. This causes the singleInsert flag to remain set at true which fails the insertion below as we get a DBList instead of a BasicDBObject :
if(singleInsert) {
BasicDBObject insertObjects = (BasicDBObject)insert;
dbCol.insertOne(insertObjects);
exchange1.getIn().setHeader("CamelMongoOid", insertObjects.get("_id"));
}
The Camel MongoDbProducer code fragment
private Function<Exchange, Object> createDoInsert() {
return (exchange1) -> {
MongoCollection dbCol = this.calculateCollection(exchange1);
boolean singleInsert = true;
Object insert = exchange1.getIn().getBody(DBObject.class);
if(insert == null) {
insert = exchange1.getIn().getBody(List.class);
if(insert == null) {
throw new CamelMongoDbException("MongoDB operation = insert, Body is not conversible to type DBObject nor List<DBObject>");
}
singleInsert = false;
insert = this.attemptConvertToList((List)insert, exchange1);
}
if(singleInsert) {
BasicDBObject insertObjects = (BasicDBObject)insert;
dbCol.insertOne(insertObjects);
exchange1.getIn().setHeader("CamelMongoOid", insertObjects.get("_id"));
} else {
List insertObjects1 = (List)insert;
dbCol.insertMany(insertObjects1);
ArrayList objectIdentification = new ArrayList(insertObjects1.size());
objectIdentification.addAll((Collection)insertObjects1.stream().map((insertObject) -> {
return insertObject.get("_id");
}).collect(Collectors.toList()));
exchange1.getIn().setHeader("CamelMongoOid", objectIdentification);
}
return insert;
};
}
My route is as below :
<route id="uploadFile">
<from uri="jetty://http://0.0.0.0:9886/test"/>
<process ref="fileProcessor"/>
<unmarshal>
<csv>
<header>fname</header>
<header>lname</header>
</csv>
</unmarshal>
<process ref="mongodbProcessor" />
<to uri="mongodb:mongoBean?database=axs175&collection=insurance&operation=insert" />
and the MongoDBProcessor constructing the List of Person Pojo
#Component
public class MongodbProcessor implements Processor {
#Override
public void process(Exchange exchange) throws Exception {
ArrayList<List<String>> personlist = (ArrayList) exchange.getIn().getBody();
ArrayList<Person> persons = new ArrayList<>();
for(List<String> records : personlist){
Person person = new Person();
person.setFname(records.get(0));
person.setLname(records.get(1));
persons.add(person);
}
exchange.getIn().setBody(persons);
}
}
Also requested information here - http://camel.465427.n5.nabble.com/Problems-with-MongoDbProducer-multiple-inserts-tc5792644.html

Answer 1

This issue is now fixed via - https://issues.apache.org/jira/browse/CAMEL-10728