Package org.apache.drill.exec.store.easy.json.loader

Class EmptyArrayFieldParser

java.lang.Object

org.apache.drill.exec.store.easy.json.parser.AbstractElementParser

org.apache.drill.exec.store.easy.json.parser.EmptyArrayParser

org.apache.drill.exec.store.easy.json.loader.EmptyArrayFieldParser

All Implemented Interfaces:

ElementParser

public class EmptyArrayFieldParser
extends EmptyArrayParser

Represents a run of empty arrays for which we have no type information. Resolves to an actual type when a non-empty array appears. Must resolve the array even if it contains nulls so we can count the null values.

Field Summary

Fields inherited from class org.apache.drill.exec.store.easy.json.parser.EmptyArrayParser

key

Constructor Summary

Constructors

Constructor	Description
EmptyArrayFieldParser(TupleParser tupleParser, String key)

Method Summary

Modifier and Type	Method	Description
void	forceResolution()
protected ElementParser	resolve(TokenIterator tokenizer)	The column type is now known from context.

Methods inherited from class org.apache.drill.exec.store.easy.json.parser.EmptyArrayParser

parse

Methods inherited from class org.apache.drill.exec.store.easy.json.parser.AbstractElementParser

errorFactory, structParser

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EmptyArrayFieldParser

public EmptyArrayFieldParser(TupleParser tupleParser,
 String key)

Method Details

forceResolution

public void forceResolution()

resolve

protected ElementParser resolve(TokenIterator tokenizer)

The column type is now known from context. Create a new array column, writer and parser to replace this parser.

Specified by:

resolve in class EmptyArrayParser