Class QadbBinSequence<T>

java.lang.Object

org.jlab.detector.scalers.DaqScalersSequence

org.jlab.detector.qadb.QadbBinSequence<T>

All Implemented Interfaces:

Iterable<QadbBin<T>>, Comparator<DaqScalers>

public class QadbBinSequence<T>
extends DaqScalersSequence
implements Iterable<QadbBin<T>>

A sequence of bins for the Quality Assurance Database (QADB).

The bins may hold generic data, such as a class instance, accessible by QadbBin.data; the data type is set by a generic type parameter, and all bins will hold the same type of data.

Author:

dilks

See Also:

• QadbBin

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	QadbBinSequence.DataInitializer<T>	lambda type to initialize each bin's generic data

Nested classes/interfaces inherited from class org.jlab.detector.scalers.DaqScalersSequence

DaqScalersSequence.Interval

Field Summary

Fields inherited from class org.jlab.detector.scalers.DaqScalersSequence

logger, scalers, TI_CLOCK_FREQ

Constructor Summary

Constructors

Constructor	Description
QadbBinSequence(List<String> filenames, int binWidth)	alternative constructor, with no QadbBin.data initialization parameter
QadbBinSequence(List<String> filenames, int binWidth, QadbBinSequence.DataInitializer<T> initDataFunction)	read a list of HIPO files for a run and generate a sequence of QADB bins.

Method Summary

Modifier and Type	Method	Description
void	correctLowerBound(int evnumMin, long timestampMin)	correct the first bin's lower bound, if you know it from tag-0 events
void	correctUpperBound(int evnumMax, long timestampMax)	correct the last bin's upper bound, if you know it from tag-0 events
Optional<QadbBin<T>>	findBin(long timestamp)
QadbBin<T>	getBin(int idx)
Iterator<QadbBin<T>>	iterator()	iterable interface implementation
static void	main(String[] args)	Demonstrate how to use this class
int	size()

Methods inherited from class org.jlab.detector.scalers.DaqScalersSequence

add, add, clear, clear, compare, findIndex, fixClockRollover, get, get, getInterval, getInterval, getInterval, getInterval, getInterval, readFiles, readSequence, rebuildSequence, validateOrdering

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

QadbBinSequence

public QadbBinSequence(List<String> filenames,
 int binWidth,
 QadbBinSequence.DataInitializer<T> initDataFunction)

read a list of HIPO files for a run and generate a sequence of QADB bins. The original sequence of scalers (DaqScalersSequence) is sampled:

• bin boundaries are set such that each bin contains binWidth consecutive scaler readouts (excluding the first); the last bin may contain less
• QadbBin objects are defined for each pair of consecutive bin boundaries
• an initial (final) QadbBin object is also defined, for events which occur before (after) the first (last) scaler readout
• the private list of scalers becomes filled with ONLY the scaler readouts at the bin boundaries
• each bin's scaler subsequence is stored within its QadbBin

Parameters:

filenames - list of HIPO files to read

binWidth - the number of consecutive scaler-readout intervals in each bin

initDataFunction - a lambda to create the initial data for each bin; must be of the form (binNumber) -> { return initData object }

QadbBinSequence

public QadbBinSequence(List<String> filenames,
 int binWidth)

alternative constructor, with no QadbBin.data initialization parameter

QadbBin.data will be initialized to null

Parameters:

filenames - list of HIPO files to read

binWidth - the number of consecutive scaler-readout intervals in each bin

Method Details

iterator

public Iterator<QadbBin<T>> iterator()

iterable interface implementation

Specified by:

iterator in interface Iterable<T>

size

public int size()

Overrides:

size in class DaqScalersSequence

Returns:

the number of bins in this sequence

getBin

public QadbBin<T> getBin(int idx)

Parameters:

idx - bin index

Returns:

a bin for a given index

findBin

public Optional<QadbBin<T>> findBin(long timestamp)

Parameters:

timestamp - the timestamp

Returns:

the bin which contains the timestamp, if found

correctLowerBound

public void correctLowerBound(int evnumMin,
 long timestampMin)

correct the first bin's lower bound, if you know it from tag-0 events

Parameters:

evnumMin - the correct minimum event number

timestampMin - the correct minimum timestamp

correctUpperBound

public void correctUpperBound(int evnumMax,
 long timestampMax)

correct the last bin's upper bound, if you know it from tag-0 events

Parameters:

evnumMax - the correct maximum event number

timestampMax - the correct maximum timestamp

main

public static void main(String[] args)

Demonstrate how to use this class

Parameters:

args - command-line arguments