Package org.apache.calcite.util.format.postgresql.format.compiled

Class CompiledPattern

java.lang.Object

org.apache.calcite.util.format.postgresql.format.compiled.CompiledPattern

All Implemented Interfaces:

CompiledItem

Direct Known Subclasses:

AmPmCompiledPattern, BcAdCompiledPattern, DayOfWeekCompiledPattern, MonthCompiledPattern, NumberCompiledPattern, RomanNumeralsCompiledPattern, TimeZoneCompiledPattern, TimeZoneHoursCompiledPattern, TimeZoneMinutesCompiledPattern, TimeZoneOffsetCompiledPattern, YearWithCommasCompiledPattern

public abstract class CompiledPattern
extends Object
implements CompiledItem

A single date/time format compiled component such as "YYYY" or "MI". A compiled component is a format component along with any flags it had. Adds the ability to parse a string.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Set<PatternModifier>	modifiers

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CompiledPattern(ChronoUnitEnum chronoUnit, Set<PatternModifier> modifiers)

Method Summary

Modifier and Type	Method	Description
protected abstract int	getBaseFormatPatternLength()	Returns the length of the format pattern without modifiers.
ChronoUnitEnum	getChronoUnit()	Get the ChronoUnitEnum value that this pattern is for.
int	getFormatPatternLength()	Returns the length of the format pattern.
boolean	isNumeric()	Does this pattern match a sequence of digits.
abstract int	parseValue(ParsePosition inputPosition, String input, boolean enforceLength, Locale locale)	Parse this date/time component from a String.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.util.format.postgresql.format.compiled.CompiledItem

convertToString

Field Details

modifiers

protected final Set<PatternModifier> modifiers

Constructor Details

CompiledPattern

protected CompiledPattern(ChronoUnitEnum chronoUnit,
 Set<PatternModifier> modifiers)

Method Details

getChronoUnit

public ChronoUnitEnum getChronoUnit()

Get the ChronoUnitEnum value that this pattern is for.

Returns:

a ChronoUnitEnum value

parseValue

public abstract int parseValue(ParsePosition inputPosition,
 String input,
 boolean enforceLength,
 Locale locale)
                        throws ParseException

Parse this date/time component from a String.

Parameters:

inputPosition - starting position for parsing

input - full string that will be parsed

enforceLength - whether to limit the length of characters read. Needed when one sequence of digits is followed by another (such as YYYYDD).

locale - Locale to use for parsing day and month names if the TM flag was present

Returns:

the integer value of the parsed date/time component

Throws:

ParseException - if unable to parse a value from input

getFormatPatternLength

public int getFormatPatternLength()

Description copied from interface: CompiledItem

Returns the length of the format pattern.

Specified by:

getFormatPatternLength in interface CompiledItem

Returns:

length of the format pattern

getBaseFormatPatternLength

protected abstract int getBaseFormatPatternLength()

Returns the length of the format pattern without modifiers.

Returns:

length of the format pattern

isNumeric

public boolean isNumeric()

Does this pattern match a sequence of digits.

Returns:

true if this pattern matches a sequence of digits