io.druid.java.util.common.parsers

Class CSVParser

java.lang.Object

io.druid.java.util.common.parsers.CSVParser

All Implemented Interfaces:

Parser<String,Object>

public class CSVParser
extends Object
implements Parser<String,Object>

Constructor Summary

Constructors

Constructor and Description
CSVParser(com.google.common.base.Optional<String> listDelimiter, boolean hasHeaderRow, int maxSkipHeaderRows)
CSVParser(com.google.common.base.Optional<String> listDelimiter, Iterable<String> fieldNames, boolean hasHeaderRow, int maxSkipHeaderRows)

Method Summary

Modifier and Type	Method and Description
List<String>	getFieldNames() Returns the fieldNames that we expect to see in parsed Maps, if known, or null otherwise.
String	getListDelimiter()
Map<String,Object>	parse(String input) Parse a String into a Map.
void	setFieldNames(Iterable<String> fieldNames) Set the fieldNames that you expect to see in parsed Maps.
void	setFieldNames(String header)
void	startFileFromBeginning() This method may or may not get called at the start of reading of every file depending on the type of IndexTasks.

Methods inherited from class java.lang.Object

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

Constructor Detail

CSVParser

public CSVParser(com.google.common.base.Optional<String> listDelimiter,
                 boolean hasHeaderRow,
                 int maxSkipHeaderRows)

CSVParser

public CSVParser(com.google.common.base.Optional<String> listDelimiter,
                 Iterable<String> fieldNames,
                 boolean hasHeaderRow,
                 int maxSkipHeaderRows)

Method Detail

getListDelimiter

public String getListDelimiter()

startFileFromBeginning

public void startFileFromBeginning()

Description copied from interface: Parser

This method may or may not get called at the start of reading of every file depending on the type of IndexTasks. The parser state should be reset if exists.

Specified by:

startFileFromBeginning in interface Parser<String,Object>

getFieldNames

public List<String> getFieldNames()

Description copied from interface: Parser

Returns the fieldNames that we expect to see in parsed Maps, if known, or null otherwise. Deprecated; Parsers should not, in general, be expected to know what fields they will return.

Specified by:

getFieldNames in interface Parser<String,Object>

setFieldNames

public void setFieldNames(Iterable<String> fieldNames)

Description copied from interface: Parser

Set the fieldNames that you expect to see in parsed Maps. Deprecated; Parsers should not, in general, be expected to know what fields they will return. Some individual types of parsers do need to know (like a TSV parser) and those parsers have their own way of setting field names.

Specified by:

setFieldNames in interface Parser<String,Object>

setFieldNames

public void setFieldNames(String header)

parse

public Map<String,Object> parse(String input)

Description copied from interface: Parser

Parse a String into a Map. The result can be null which means the given input string will be ignored.

Specified by:

parse in interface Parser<String,Object>