org.yamcs.oldparchive

Class SortedTimeSegment

java.lang.Object

org.yamcs.oldparchive.BaseSegment

org.yamcs.oldparchive.SortedTimeSegment

All Implemented Interfaces:

ValueSegment

public class SortedTimeSegment
extends BaseSegment
implements ValueSegment

TimeSegment stores timestamps relative to a t0. The timestamps are stored in a sorted int array.

Author:

nm

Field Summary

Fields

Modifier and Type	Field and Description
static int	NUMBITS_MASK
static long	SEGMENT_MASK
static int	TIMESTAMP_MASK
static int	VERSION

Fields inherited from class org.yamcs.oldparchive.BaseSegment

FORMAT_ID_BinaryValueSegment, FORMAT_ID_BooleanValueSegment, FORMAT_ID_DoubleValueSegment, FORMAT_ID_FloatValueSegment, FORMAT_ID_GenericValueSegment, FORMAT_ID_IntValueSegment, FORMAT_ID_LongValueSegment, FORMAT_ID_OldBooleanValueSegment, FORMAT_ID_ParameterStatusSegment, FORMAT_ID_SortedTimeValueSegment, FORMAT_ID_StringValueSegment, formatId

Constructor Summary

Constructors

Constructor and Description
SortedTimeSegment(long segmentStart)

Method Summary

Modifier and Type	Method and Description
void	add(int pos, Value engValue)
int	add(long instant) Insert instant into the array and return the position at which it has been inserted.
BaseSegment	consolidate()
PrimitiveIterator.OfLong	getAscendingIterator(long startFrom) Constructs an ascending iterator starting from a specified value (inclusive)
PrimitiveIterator.OfLong	getDescendingIterator(long startFrom) Constructs an descending iterator starting from a specified value (exclusive)
int	getMaxSerializedSize()
static long	getNextSegmentStart(long instant)
long[]	getRange(int posStart, int posStop, boolean ascending) returns an array containing the values in the range [posStart, posStop) if ascending or [posStop, posStart) if descending
static long	getSegmentDuration() duration in milliseconds of one segment
long	getSegmentEnd()
static long	getSegmentEnd(long instant) returns the end of the segment where the instant fits
static long	getSegmentId(long instant) returns the ID of the segment where the instant fits - this is the same with segment start
long	getSegmentStart()
static long	getSegmentStart(long instant) returns the start of the segment where instant fits
long	getT0()
long	getTime(int idx) get timestamp at position idx
Value	getValue(int index) returns Value at position index
static boolean	overlap(long segmentId, long start, long stop) returns true if the segment overlaps the [start,stop) interval
static SortedTimeSegment	parseFrom(ByteBuffer bb, long segmentStart)
int	search(long instant) performs a binary search in the time segment and returns the position of t or where t would fit in.
int	size()
String	toString()
void	writeTo(ByteBuffer bb) Encode the time array

Methods inherited from class org.yamcs.oldparchive.BaseSegment

getFormatId, parseSegment

Methods inherited from class java.lang.Object

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

Field Detail

NUMBITS_MASK

public static final int NUMBITS_MASK

See Also:

Constant Field Values

TIMESTAMP_MASK

public static final int TIMESTAMP_MASK

See Also:

Constant Field Values

SEGMENT_MASK

public static final long SEGMENT_MASK

See Also:

Constant Field Values

VERSION

public static final int VERSION

See Also:

Constant Field Values

Constructor Detail

SortedTimeSegment

public SortedTimeSegment(long segmentStart)

Method Detail

add

public int add(long instant)

Insert instant into the array and return the position at which it has been inserted.

Parameters:

instant -

getTime

public long getTime(int idx)

get timestamp at position idx

Parameters:

idx -

Returns:

getAscendingIterator

public PrimitiveIterator.OfLong getAscendingIterator(long startFrom)

Constructs an ascending iterator starting from a specified value (inclusive)

Parameters:

startFrom -

Returns:

getDescendingIterator

public PrimitiveIterator.OfLong getDescendingIterator(long startFrom)

Constructs an descending iterator starting from a specified value (exclusive)

Parameters:

startFrom -

Returns:

getT0

public long getT0()

getSegmentStart

public static long getSegmentStart(long instant)

returns the start of the segment where instant fits

Parameters:

instant -

Returns:

getSegmentId

public static long getSegmentId(long instant)

returns the ID of the segment where the instant fits - this is the same with segment start

Parameters:

instant -

Returns:

getSegmentEnd

public static long getSegmentEnd(long instant)

returns the end of the segment where the instant fits

Parameters:

instant -

Returns:

getNextSegmentStart

public static long getNextSegmentStart(long instant)

overlap

public static boolean overlap(long segmentId,
                              long start,
                              long stop)

returns true if the segment overlaps the [start,stop) interval

Parameters:

segmentId -

start -

stop -

Returns:

search

public int search(long instant)

performs a binary search in the time segment and returns the position of t or where t would fit in.

Parameters:

instant -

Returns:

See Also:

Arrays.binarySearch(int[], int)

size

public int size()

Specified by:

size in interface ValueSegment

Specified by:

size in class BaseSegment

getSegmentStart

public long getSegmentStart()

toString

public String toString()

Overrides:

toString in class Object

writeTo

public void writeTo(ByteBuffer bb)

Encode the time array

Specified by:

writeTo in class BaseSegment

parseFrom

public static SortedTimeSegment parseFrom(ByteBuffer bb,
                                          long segmentStart)
                                   throws DecodingException

Throws:

DecodingException

getMaxSerializedSize

public int getMaxSerializedSize()

Specified by:

getMaxSerializedSize in class BaseSegment

Returns:

a high approximation for the serialized size in order to allocate a ByteBuffer big enough

getValue

public Value getValue(int index)

Description copied from interface: ValueSegment

returns Value at position index

Specified by:

getValue in interface ValueSegment

Returns:

the value at the index

getSegmentEnd

public long getSegmentEnd()

getRange

public long[] getRange(int posStart,
                       int posStop,
                       boolean ascending)

Description copied from class: BaseSegment

returns an array containing the values in the range [posStart, posStop) if ascending or [posStop, posStart) if descending

Specified by:

getRange in class BaseSegment

Returns:

an array containing the values in the specified range

add

public void add(int pos,
                Value engValue)

Specified by:

add in interface ValueSegment

consolidate

public BaseSegment consolidate()

Specified by:

consolidate in interface ValueSegment

getSegmentDuration

public static long getSegmentDuration()

duration in milliseconds of one segment

Returns: