Insert multiple Records of same type at once in Google Cloud End Points

Question

I have created a google cloud endpoint api which takes one record at a time as a JSON. Following is the insertMethod

@ApiMethod(name = "insertRecord")
public Record insertRecord(Record record) {
    PersistenceManager mgr = getPersistenceManager();
    try {
        if(record.getSyncTime() == null)
            record.setSyncTime(new Date());
        mgr.makePersistent(record);
    } finally {
        mgr.close();
    }
    return error;
}

If we post a JSON in below format, it would add the record in data store.

{
    ipAddress: "123.456.789.098",
    user: "buddha",
    message: "testing a single record adding"
}

I'm curious to know How I can write the method that would take multiple records in a single JSON request?

I tried changing method to take a List but I got an error saying that I should not pass Array or List.

Answer 1

After some trial and errors, I have solved the problem by following below Approach.

I have created another Class that contains a List of Records as below.

public class RecordList {
    List<Record> records;

    public List<Record> getRecords() {
        return records;
    }

    public void setRecords(List<Record> records) {
        this.records= records;
    }
}

I have created another API method that takes this this new object as a parameter

@ApiMethod(name = "insertRecordList")
public RecordList insertRecordList(RecordList records) {
    PersistenceManager mgr = getPersistenceManager();
    try {
        for(Record record : records.getRecords()){
            if(record.getSyncTime() == null)
                record.setSyncTime(new Date());
        }
        mgr.makePersistentAll(records.getRecords());
    } finally {
        mgr.close();
    }
    return records;
}   

With this, I'm able to pass JSON request as below to insert multiple items at once...

{
  records:[
    {
      "host": "testlist",
      "ipAddress": "sadf",
      "message": "testlist"
    },
    {
      "host": "h",
      "ipAddress": "1",
      "message": "another"
    }
  ]
}