edu.berkeley.cs186.database.table.stats

Interface Histogram<T>

Type Parameters:

T - the type of the histogram

All Known Implementing Classes:

BoolHistogram, FloatHistogram, IntHistogram, StringHistogram

public interface Histogram<T>

A parametrized type that stores histograms for a given value.

Method Summary

Methods

Modifier and Type	Method and Description
void	addValue(T value) Add a new value to the Histogram.
List<Bucket<T>>	getAllBuckets() Return all of the buckets in the histogram
int	getEntriesInRange(T start, T end) Get the number of values within a given range, including start and up to but not including end.
void	removeValue(T value) Removes a value from the Histogram

Method Detail

addValue

void addValue(T value)

Add a new value to the Histogram.

Parameters:

value - the value to add

removeValue

void removeValue(T value)

Removes a value from the Histogram

Parameters:

value - the value to remove

getEntriesInRange

int getEntriesInRange(T start,
                    T end)

Get the number of values within a given range, including start and up to but not including end.

Parameters:

start - the inclusive start of the range

end - the non-inclusive end of the range

Returns:

the number of values in this range

getAllBuckets

List<Bucket<T>> getAllBuckets()

Return all of the buckets in the histogram

Returns:

the list of buckets