edu.berkeley.cs186.database.table.stats

Class TableStats

java.lang.Object

edu.berkeley.cs186.database.table.stats.TableStats

public class TableStats
extends Object

A wrapper class to represent the statistics for a single table.

Constructor Summary

Constructors

Constructor and Description
TableStats(Schema tableSchema)

Method Summary

Methods

Modifier and Type	Method and Description
void	addRecord(Record record) Adds the stats for a new record.
Histogram	getHistogram(int index) Get the histogram for a particular column.
int	getNumRecords()
void	removeRecord(Record record) Remove the stats for an existing record.

Methods inherited from class java.lang.Object

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

Constructor Detail

TableStats

public TableStats(Schema tableSchema)

Method Detail

addRecord

public void addRecord(Record record)

Adds the stats for a new record.

Parameters:

record - the new record

removeRecord

public void removeRecord(Record record)

Remove the stats for an existing record.

Parameters:

record - the new record

getNumRecords

public int getNumRecords()

getHistogram

public Histogram getHistogram(int index)

Get the histogram for a particular column.

Parameters:

index - the index of the column

Returns:

the histogram corresponding to index