org.jfree.chart.axis

Class SegmentedTimeline.Segment

Enclosing Class:
SegmentedTimeline
Implemented Interfaces:
Cloneable, Comparable, Serializable
Known Direct Subclasses:
SegmentedTimeline.SegmentRange

public class SegmentedTimeline.Segment
extends java.lang.Object
implements Comparable, Cloneable, Serializable

Internal class to represent a valid segment for this timeline. A segment is valid on a timeline if it is part of its included, excluded or exception segments.

Each segment will know its segment number, segmentStart, segmentEnd and index inside the segment.

Field Summary

protected long
millisecond
A reference point within the segment.
protected long
segmentEnd
The segment end.
protected long
segmentNumber
The segment number.
protected long
segmentStart
The segment start.

Constructor Summary

Segment()
Protected constructor only used by sub-classes.
Segment(long millisecond)
Creates a segment for a given point in time.

Method Summary

boolean
after(SegmentedTimeline.Segment other)
Returns true if this segment is wholly after another segment.
boolean
before(SegmentedTimeline.Segment other)
Returns true if this segment is wholly before another segment.
long
calculateSegmentNumber(long millis)
Calculates the segment number for a given millisecond.
int
compareTo(Object object)
Will compare this Segment with another Segment (from Comparable interface).
boolean
contained(long from, long to)
Returns true if this segment is contained in an interval.
boolean
contains(long millis)
Returns true if a particular millisecond is contained in this segment.
boolean
contains(long from, long to)
Returns true if an interval is contained in this segment.
boolean
contains(SegmentedTimeline.Segment segment)
Returns true if a segment is contained in this segment.
SegmentedTimeline.Segment
copy()
Returns a copy of ourselves or null if there was an exception during cloning.
void
dec()
Decrements the internal attributes of this segment by one segment.
void
dec(long n)
Decrements the internal attributes of this segment by a number of segments.
boolean
equals(Object object)
Tests an object (usually another Segment) for equality with this segment.
Date
getDate()
Returns a java.util.Date that represents the reference point for this segment.
long
getMillisecond()
Returns the millisecond used to reference this segment (always between the segmentStart and segmentEnd).
long
getSegmentCount()
Returns always one (the number of segments contained in this segment).
long
getSegmentEnd()
Gets the end of this segment in ms.
long
getSegmentNumber()
Returns the segment number of this segment.
long
getSegmentStart()
Gets the start of this segment in ms.
boolean
inExceptionSegments()
Returns true if we are an exception segment.
boolean
inExcludeSegments()
Returns true if we are an excluded segment.
boolean
inIncludeSegments()
Returns true if we are an included segment and we are not an exception.
void
inc()
Increments the internal attributes of this segment by one segment.
void
inc(long n)
Increments the internal attributes of this segment by a number of segments.
SegmentedTimeline.Segment
intersect(long from, long to)
Returns a segment that is the intersection of this segment and the interval.
void
moveIndexToEnd()
Moves the index of this segment to the end of the segment.
void
moveIndexToStart()
Moves the index of this segment to the beginning if the segment.

Field Details

millisecond

protected long millisecond
A reference point within the segment.

segmentEnd

protected long segmentEnd
The segment end.

segmentNumber

protected long segmentNumber
The segment number.

segmentStart

protected long segmentStart
The segment start.

Constructor Details

Segment

protected Segment()
Protected constructor only used by sub-classes.

Segment

protected Segment(long millisecond)
Creates a segment for a given point in time.
Parameters:
millisecond - the millisecond (as encoded by java.util.Date).

Method Details

after

public boolean after(SegmentedTimeline.Segment other)
Returns true if this segment is wholly after another segment.
Parameters:
other - the other segment.
Returns:
A boolean.

before

public boolean before(SegmentedTimeline.Segment other)
Returns true if this segment is wholly before another segment.
Parameters:
other - the other segment.
Returns:
A boolean.

calculateSegmentNumber

public long calculateSegmentNumber(long millis)
Calculates the segment number for a given millisecond.
Parameters:
millis - the millisecond (as encoded by java.util.Date).
Returns:
The segment number.

compareTo

public int compareTo(Object object)
Will compare this Segment with another Segment (from Comparable interface).
Parameters:
object - The other Segment to compare with
Returns:
-1: this <32object, 0: this.equal(object) and +1: this > object

contained

public boolean contained(long from,
                         long to)
Returns true if this segment is contained in an interval.
Parameters:
from - the start of the interval.
to - the end of the interval.
Returns:
true if this segment is contained in the interval.

contains

public boolean contains(long millis)
Returns true if a particular millisecond is contained in this segment.
Parameters:
millis - the millisecond to verify.
Returns:
true if the millisecond is contained in the segment.

contains

public boolean contains(long from,
                        long to)
Returns true if an interval is contained in this segment.
Parameters:
from - the start of the interval.
to - the end of the interval.
Returns:
true if the interval is contained in the segment.

contains

public boolean contains(SegmentedTimeline.Segment segment)
Returns true if a segment is contained in this segment.
Parameters:
segment - the segment to test for inclusion
Returns:
true if the segment is contained in this segment.

copy

public SegmentedTimeline.Segment copy()
Returns a copy of ourselves or null if there was an exception during cloning.
Returns:
A copy of this segment.

dec

public void dec()
Decrements the internal attributes of this segment by one segment. The exact time decremented is segmentSize.

dec

public void dec(long n)
Decrements the internal attributes of this segment by a number of segments.
Parameters:
n - Number of segments to decrement.

equals

public boolean equals(Object object)
Tests an object (usually another Segment) for equality with this segment.
Parameters:
object - The other segment to compare with us
Returns:
true if we are the same segment

getDate

public Date getDate()
Returns a java.util.Date that represents the reference point for this segment.
Returns:
The date.

getMillisecond

public long getMillisecond()
Returns the millisecond used to reference this segment (always between the segmentStart and segmentEnd).
Returns:
The millisecond.

getSegmentCount

public long getSegmentCount()
Returns always one (the number of segments contained in this segment).
Returns:
The segment count (always 1 for this class).

getSegmentEnd

public long getSegmentEnd()
Gets the end of this segment in ms.
Returns:
The segment end.

getSegmentNumber

public long getSegmentNumber()
Returns the segment number of this segment. Segments start at 0.
Returns:
The segment number.

getSegmentStart

public long getSegmentStart()
Gets the start of this segment in ms.
Returns:
The segment start.

inExceptionSegments

public boolean inExceptionSegments()
Returns true if we are an exception segment. This is implemented via a binary search on the exceptionSegments sorted list. If the segment is not listed as an exception in our list and we have a baseTimeline, a check is performed to see if the segment is inside an excluded segment from our base. If so, it is also considered an exception.
Returns:
true if we are an exception segment.

inExcludeSegments

public boolean inExcludeSegments()
Returns true if we are an excluded segment.
Returns:
true or false.

inIncludeSegments

public boolean inIncludeSegments()
Returns true if we are an included segment and we are not an exception.
Returns:
true or false.

inc

public void inc()
Increments the internal attributes of this segment by one segment. The exact time incremented is segmentSize.

inc

public void inc(long n)
Increments the internal attributes of this segment by a number of segments.
Parameters:
n - Number of segments to increment.

intersect

public SegmentedTimeline.Segment intersect(long from,
                                           long to)
Returns a segment that is the intersection of this segment and the interval.
Parameters:
from - the start of the interval.
to - the end of the interval.
Returns:
A segment.

moveIndexToEnd

public void moveIndexToEnd()
Moves the index of this segment to the end of the segment.

moveIndexToStart

public void moveIndexToStart()
Moves the index of this segment to the beginning if the segment.