Till Rohrmann created FLINK-2692: ------------------------------------ Summary: Untangle CsvInputFormat into PojoTypeCsvInputFormat and TupleTypeCsvInputFormat Key: FLINK-2692 URL: https://issues.apache.org/jira/browse/FLINK-2692 Project: Flink Issue Type: Improvement Reporter: Till Rohrmann Priority: Minor
The {{CsvInputFormat}} currently allows to return values as a {{Tuple}} or a {{Pojo}} type. As a consequence, the processing logic, which has to work for both types, is overly complex. For example, the {{CsvInputFormat}} contains fields which are only used when a Pojo is returned. Moreover, the pojo field information are constructed by calling setter methods which have to be called in a very specific order, otherwise they fail. E.g. one first has to call {{setFieldTypes}} before calling {{setOrderOfPOJOFields}}, otherwise the number of fields might be different. Furthermore, some of the methods can only be called if the return type is a {{Pojo}} type, because they expect that a {{PojoTypeInfo}} is present. I think the {{CsvInputFormat}} should be refactored to make the code more easily maintainable. I propose to split it up into a {{PojoTypeCsvInputFormat}} and a {{TupleTypeCsvInputFormat}} which take all the required information via their constructors instead of using the {{setFields}} and {{setOrderOfPOJOFields}} approach. -- This message was sent by Atlassian JIRA (v6.3.4#6332)