Details
Description
Using a simple, vanilla insert like the below, the driver reports:
An EndArray value cannot be written to the root level of a BSON document
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Simple reproduction scenario:
final MongoClient mongoClient = MongoClients.create( |
MongoClientSettings.builder()
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.applyConnectionString(new ConnectionString("mongodb://localhost:27017")) |
.uuidRepresentation(UuidRepresentation.STANDARD)
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.build()
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);
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mongoClient.getDatabase("unittest") |
.getCollection("listError") |
.insertOne(
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new Document() |
.append("_id", new org.bson.types.ObjectId()) |
.append(
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"items", |
Collections.singletonList(
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new Document() |
.append("_id", new org.bson.types.ObjectId()) |
)
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)
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);
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The stack trace is:
org.bson.BsonInvalidOperationException: An EndArray value cannot be written to the root level of a BSON document. at org.bson.AbstractBsonWriter.throwInvalidState(AbstractBsonWriter.java:740)
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at org.bson.AbstractBsonWriter.checkPreconditions(AbstractBsonWriter.java:701)
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at org.bson.AbstractBsonWriter.writeEndArray(AbstractBsonWriter.java:341)
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at com.mongodb.internal.connection.BsonWriterDecorator.writeEndArray(BsonWriterDecorator.java:68)
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at com.mongodb.internal.connection.LevelCountingBsonWriter.writeEndArray(LevelCountingBsonWriter.java:66)
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at com.mongodb.internal.connection.IdHoldingBsonWriter.writeEndArray(IdHoldingBsonWriter.java:133)
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at org.bson.codecs.DocumentCodec.writeIterable(DocumentCodec.java:222)
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at org.bson.codecs.DocumentCodec.writeValue(DocumentCodec.java:193)
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at org.bson.codecs.DocumentCodec.writeMap(DocumentCodec.java:212)
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at org.bson.codecs.DocumentCodec.encode(DocumentCodec.java:154)
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at org.bson.codecs.DocumentCodec.encode(DocumentCodec.java:45)
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at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:63)
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at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:29)
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at com.mongodb.internal.connection.SplittablePayload$WriteRequestEncoder.encode(SplittablePayload.java:200)
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at com.mongodb.internal.connection.SplittablePayload$WriteRequestEncoder.encode(SplittablePayload.java:187)
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at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:63)
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at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:29)
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at com.mongodb.internal.connection.BsonWriterHelper.writeDocument(BsonWriterHelper.java:77)
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at com.mongodb.internal.connection.BsonWriterHelper.writePayload(BsonWriterHelper.java:59)
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at com.mongodb.internal.connection.CommandMessage.encodeMessageBodyWithMetadata(CommandMessage.java:145)
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at com.mongodb.internal.connection.RequestMessage.encode(RequestMessage.java:138)
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at com.mongodb.internal.connection.CommandMessage.encode(CommandMessage.java:59)
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at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:247)
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at com.mongodb.internal.connection.UsageTrackingInternalConnection.sendAndReceive(UsageTrackingInternalConnection.java:99)
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at com.mongodb.internal.connection.DefaultConnectionPool$PooledConnection.sendAndReceive(DefaultConnectionPool.java:500)
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at com.mongodb.internal.connection.CommandProtocolImpl.execute(CommandProtocolImpl.java:71)
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at com.mongodb.internal.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:224)
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at com.mongodb.internal.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:202)
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at com.mongodb.internal.connection.DefaultServerConnection.command(DefaultServerConnection.java:118)
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at com.mongodb.internal.operation.MixedBulkWriteOperation.executeCommand(MixedBulkWriteOperation.java:419)
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at com.mongodb.internal.operation.MixedBulkWriteOperation.executeBulkWriteBatch(MixedBulkWriteOperation.java:245)
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at com.mongodb.internal.operation.MixedBulkWriteOperation.access$700(MixedBulkWriteOperation.java:71)
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at com.mongodb.internal.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:189)
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at com.mongodb.internal.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:180)
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at com.mongodb.internal.operation.OperationHelper.withReleasableConnection(OperationHelper.java:500)
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at com.mongodb.internal.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:180)
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at com.mongodb.internal.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:71)
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at com.mongodb.client.internal.MongoClientDelegate$DelegateOperationExecutor.execute(MongoClientDelegate.java:207)
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at com.mongodb.client.internal.MongoCollectionImpl.executeSingleWriteRequest(MongoCollectionImpl.java:1008)
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at com.mongodb.client.internal.MongoCollectionImpl.executeInsertOne(MongoCollectionImpl.java:469)
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at com.mongodb.client.internal.MongoCollectionImpl.insertOne(MongoCollectionImpl.java:452)
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at com.mongodb.client.internal.MongoCollectionImpl.insertOne(MongoCollectionImpl.java:446)
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It appears to be because IdHoldingBsonWriter, when it writes its internal EndArray token, finds the wrong state:
@Override
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public void writeEndArray() { |
super.writeEndArray(); |
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if (isWritingId()) { |
getIdBsonWriter().writeEndArray();
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if (getIdBsonWriter().getCurrentLevel() == 0) { |
getIdBsonWriter().writeEndDocument();
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id = new RawBsonDocument(getBytes()).get(ID_FIELD_NAME); |
}
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}
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}
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