Package net.sansa_stack.hadoop.core.pattern

Class CustomPatternCsvOld.CustomMatcherCsv

java.lang.Object

net.sansa_stack.hadoop.core.pattern.CustomMatcherBase

net.sansa_stack.hadoop.core.pattern.CustomPatternCsvOld.CustomMatcherCsv

All Implemented Interfaces:

MatchResult, CustomMatcher

Enclosing class:

CustomPatternCsvOld

public class CustomPatternCsvOld.CustomMatcherCsv
extends CustomMatcherBase

Field Summary

Fields

Modifier and Type	Field	Description
protected int	newlineMatchStart
protected int	nextQuoteEnd
protected boolean	nextQuoteExamined
protected int	nextQuoteStart

Fields inherited from class net.sansa_stack.hadoop.core.pattern.CustomMatcherBase

charSequence, pos, regionEnd, regionStart

Constructor Summary

Constructors

Constructor	Description
CustomMatcherCsv(CharSequence charSequence)

Method Summary

Modifier and Type	Method	Description
int	end()
boolean	find()	The find method operates as follows: 1.) set startPos to 0 2.) Find the first character after a newline after startPos - save this position and candidatePos 3.) Verify that the newline is a new row start: Check backwards up to the startPos (not exceeding it) - if there is no start of an escaped field then the newline is a row start and break 4.) Set startPos to candidatePos and got to 2 Notes: - An empty quoted field: Assume the following data: "","",hello "",""$ The issue is that a quoted empty field may look exactly like an escaped double quote.
String	group()
int	start()

Methods inherited from class net.sansa_stack.hadoop.core.pattern.CustomMatcherBase

end, end, group, groupCount, region, start, start

Methods inherited from class java.lang.Object

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

Field Details

newlineMatchStart

protected int newlineMatchStart

nextQuoteExamined

protected boolean nextQuoteExamined

nextQuoteEnd

protected int nextQuoteEnd

nextQuoteStart

protected int nextQuoteStart

Constructor Details

CustomMatcherCsv

public CustomMatcherCsv(CharSequence charSequence)

Method Details

find

public boolean find()

The find method operates as follows: 1.) set startPos to 0 2.) Find the first character after a newline after startPos - save this position and candidatePos 3.) Verify that the newline is a new row start: Check backwards up to the startPos (not exceeding it) - if there is no start of an escaped field then the newline is a row start and break 4.) Set startPos to candidatePos and got to 2 Notes: - An empty quoted field: Assume the following data: "","",hello "",""$ The issue is that a quoted empty field may look exactly like an escaped double quote.

start

public int start()

end

public int end()

group

public String group()