Package org.apache.logging.log4j.core.util.internal.instant

Class InstantPatternDynamicFormatter.DynamicPatternSequence

java.lang.Object

org.apache.logging.log4j.core.util.internal.instant.InstantPatternDynamicFormatter.PatternSequence

org.apache.logging.log4j.core.util.internal.instant.InstantPatternDynamicFormatter.DynamicPatternSequence

Enclosing class:

InstantPatternDynamicFormatter

static final class InstantPatternDynamicFormatter.DynamicPatternSequence
extends InstantPatternDynamicFormatter.PatternSequence

Creates formatters that use DateTimeFormatter.

Field Summary

Fields inherited from class org.apache.logging.log4j.core.util.internal.instant.InstantPatternDynamicFormatter.PatternSequence

pattern, precision

Constructor Summary

Constructors

Constructor	Description
DynamicPatternSequence(java.lang.String singlePattern)
DynamicPatternSequence(java.lang.String pattern, java.time.temporal.ChronoUnit precision)

Method Summary

Modifier and Type	Method	Description
(package private) InstantPatternFormatter	createFormatter(java.util.Locale locale, java.util.TimeZone timeZone)
private static java.time.temporal.ChronoUnit	patternPrecision(java.lang.String singlePattern)
private static java.lang.String	removePadding(java.lang.String content)
(package private) @Nullable InstantPatternDynamicFormatter.PatternSequence	tryMerge(InstantPatternDynamicFormatter.PatternSequence other, java.time.temporal.ChronoUnit thresholdPrecision)	Tries to merge two pattern sequences.
private static void	validateContent(java.lang.String content)

Methods inherited from class org.apache.logging.log4j.core.util.internal.instant.InstantPatternDynamicFormatter.PatternSequence

equals, escapeLiteral, hashCode, isConstantForDurationOf, mergePatterns, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DynamicPatternSequence

DynamicPatternSequence(java.lang.String singlePattern)

Parameters:

singlePattern - A DateTimeFormatter pattern containing a single letter.

DynamicPatternSequence

DynamicPatternSequence(java.lang.String pattern,
                       java.time.temporal.ChronoUnit precision)

Parameters:

pattern - Any DateTimeFormatter pattern.

precision - The maximum interval of time over which this pattern is constant.

Method Detail

createFormatter

InstantPatternFormatter createFormatter(java.util.Locale locale,
                                        java.util.TimeZone timeZone)

Specified by:

createFormatter in class InstantPatternDynamicFormatter.PatternSequence

tryMerge

@Nullable InstantPatternDynamicFormatter.PatternSequence tryMerge(InstantPatternDynamicFormatter.PatternSequence other,
                                                                  java.time.temporal.ChronoUnit thresholdPrecision)

Description copied from class: InstantPatternDynamicFormatter.PatternSequence

Tries to merge two pattern sequences.

If not {@link null}, the pattern sequence returned by this method must:

1. Have a InstantPatternDynamicFormatter.PatternSequence.precision, which is the minimum of the precisions of the two merged sequences.
2. Create formatters that are equivalent to the concatenation of the formatters produced by the two merged sequences.

The returned pattern sequence should try to achieve these two goals:

1. Create formatters which are faster than the concatenation of the formatters produced by the two merged sequences.
2. It should be {@link null} if one of the pattern sequences is effectively constant over thresholdPrecision, but the other one is not.

Specified by:

tryMerge in class InstantPatternDynamicFormatter.PatternSequence

Parameters:

other - A pattern sequence.

thresholdPrecision - A precision threshold to determine effectively constant sequences. This prevents merging effectively constant and dynamic pattern sequences.

Returns:

A merged formatter factory or null if merging is not possible.

patternPrecision

private static java.time.temporal.ChronoUnit patternPrecision(java.lang.String singlePattern)

Parameters:

singlePattern - a single-letter directive singlePattern complying (e.g., H, HH, or pHH)

Returns:

the time precision of the directive

validateContent

private static void validateContent(java.lang.String content)

removePadding

private static java.lang.String removePadding(java.lang.String content)