org.apache.derby.iapi.types
Class DateTimeParser

java.lang.Object
  org.apache.derby.iapi.types.DateTimeParser

 class DateTimeParser
extends java.lang.Object

This class provides a simple regular expression parser for standard format dates, times, and timestamps

Field Summary

private char	currentSeparator
private int	fieldStart
private int	len
private java.lang.String	str

Constructor Summary

DateTimeParser(java.lang.String str)

Method Summary

(package private) void	checkEnd() Check that we are at the end of the string: that the rest of the characters, if any, are blanks.
(package private) char	getCurrentSeparator()
(package private) char	nextSeparator()
(package private) int	parseChoice(java.lang.String[] choices) Determine if the next characters are one of a choice of strings.
(package private) int	parseInt(int maxDigits, boolean truncationAllowed, char[] separator, boolean isFraction) Parse the next integer.
private void	updateCurrentSeparator()

Methods inherited from class java.lang.Object

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

Field Detail

str

private java.lang.String str

len

private int len

fieldStart

private int fieldStart

currentSeparator

private char currentSeparator

Constructor Detail

DateTimeParser

DateTimeParser(java.lang.String str)

Method Detail

parseInt

int parseInt(int maxDigits,
             boolean truncationAllowed,
             char[] separator,
             boolean isFraction)
       throws StandardException

Parse the next integer.

Parameters:

maxDigits - the maximum number of digits

truncationAllowed - If true then leading zeroes may be ommitted. If false then the integer must be exactly ndigits long.

separator - The separator at the end of the integer. If zero then the integer must be at the end of the string but may be followed by spaces.

isFraction - If true then the returned integer will be multiplied by 10**(maxDigits - actualDigitCount)

Returns:

the integer.

Throws:

StandardException - invalid syntax.

parseChoice

int parseChoice(java.lang.String[] choices)
          throws StandardException

Determine if the next characters are one of a choice of strings.

Parameters:

choices - An array of strings.

Returns:

An index in choices.

Throws:

StandardException - if the next characters are not in choices.

updateCurrentSeparator

private void updateCurrentSeparator()

checkEnd

void checkEnd()
        throws StandardException

Check that we are at the end of the string: that the rest of the characters, if any, are blanks.

Throws:

StandardException - if there are more non-blank characters.

nextSeparator

char nextSeparator()

Returns:

the next separator, 0 if there are none

getCurrentSeparator

char getCurrentSeparator()

Returns:

the separator between the last parsed integer and the next integer, 0 if the parser is at the end of the string.