I'm working on Talend open studio for Big Data and connected to a MongoDB Database , however i can't extract complex subfields objects from my collections, sometimes there is 4 levels of subfields and i always get a null when i try to extract more than the 1st level of data inside a sub field. can you please help me ? Thank you <3

CodePudding user response：

Use get and set methods. Only For data that is non persistent.

CodePudding user response：

You can get the whole JSON object by writing a * to the DB column name field in the schema.

Once you have the raw json you could get the information from it a lot easier.