student.weblog

Interface LogAnalyzer

public interface LogAnalyzer

An interface for a web server log analyzer that processes web log data analyses hourly and weekly access patterns. This interface is based on the web log analyzer from Chapter 4 of Objects First with Java, by David J. Barnes and Michael Kolling.

Version:

2003.11.02

Author:

Stephen Edwards

Method Summary

Modifier and Type	Method and Description
int	accessCountsForDay(int day) Retrieve a count of web accesses for the specified day of the week.
int	accessCountsForDayHour(int day, int hour) Retrieve a count of web accesses for the specified time period.
int	accessCountsForHour(int hour) Retrieve a count of web accesses during the specified hour of the day.
void	accumulateLogData(Scanner inStream) Add all log entries from a given stream to the current access pattern data.
void	accumulateLogDataFromFile(String file) Add all log entries from a given file to the current access pattern data.
void	accumulateLogDataFromURL(String url) Add all log entries from a given URL to the current access pattern data.

Method Detail

accumulateLogData

void accumulateLogData(Scanner inStream)

Add all log entries from a given stream to the current access pattern data. Multiple logs can be combined by calling this method multiple times.

Parameters:

inStream - the stream to read log entries from

accumulateLogDataFromFile

void accumulateLogDataFromFile(String file)

Add all log entries from a given file to the current access pattern data. This is a convenience method that provides the same features as accumulateLogData(Scanner), but by taking a file name instead.

Parameters:

file - the file to read log entries from

accumulateLogDataFromURL

void accumulateLogDataFromURL(String url)

Add all log entries from a given URL to the current access pattern data. This is a convenience method that provides the same features as accumulateLogData(Scanner), but by taking a URL instead.

Parameters:

url - the URL to read log entries from

accessCountsForDayHour

int accessCountsForDayHour(int day,
                           int hour)

Retrieve a count of web accesses for the specified time period. The time period is specified by giving a day of the week using a Calendar day constant (e.g., Calendar.SUNDAY ... Calendar.SATURDAY), and an hour of the day (0-23).

Parameters:

day - the weekday for which accesses are reported

hour - the hour of the given day

Returns:

a count of all logged accesses occuring during the specified hour on the given day of the week

accessCountsForDay

int accessCountsForDay(int day)

Retrieve a count of web accesses for the specified day of the week. The day of the week is specified by using a Calendar day constant (e.g., Calendar.SUNDAY ... Calendar.SATURDAY).

Parameters:

day - the weekday for which accesses are reported

Returns:

a count of all logged accesses occuring on the given day of the week

accessCountsForHour

int accessCountsForHour(int hour)

Retrieve a count of web accesses during the specified hour of the day.

Parameters:

hour - the hour to report on (0-23)

Returns:

a count of all logged accesses occuring during the specified hour, over all days that have been logged