Package de.dhbw.contactdb

Class Main

java.lang.Object

de.dhbw.contactdb.Main

public class Main
extends Object

Main class

Since:

21.06.2021

Version:

1.0

Author:

florian kaiser

Field Summary

Fields

Modifier and Type	Field	Description
static HashMap<Integer,Person>	persons	Contains all persons from contacts2021.db
static HashMap<Integer,Place>	places	Contains all places from contacts2021.db
static HashSet<Visit>	visits	Contains all visits from contacts2021.db

Constructor Summary

Constructors

Constructor	Description
Main()

Method Summary

Modifier and Type	Method	Description
private static void	argument_error()	Prints error message
static List<Visit>	getContactPersons(int id)	Lists all persons that were at the same place at the same time as a specific person.
static String	getSearchString(String s)	Extracts string from String.
static List<Visit>	getVisitors(String s)	Lists all Persons that were at the same place (id) at the same time.
static void	main(String[] args)	Main function Parse commandline parameters
static void	parseArguments(String args)	Parse commandline arguments and run specific functions after
static String	searchForPerson(String search)	Searches the HashMap persons for a specific string
static String	searchForPlace(String search)	Searches the HashMap places for a specific string

Methods inherited from class java.lang.Object

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

Field Details

persons

public static HashMap<Integer,Person> persons

Contains all persons from contacts2021.db

See Also:

Parser

places

public static HashMap<Integer,Place> places

Contains all places from contacts2021.db

See Also:

Parser

visits

public static HashSet<Visit> visits

Contains all visits from contacts2021.db

See Also:

Parser

Constructor Details

Main

public Main()

Method Details

main

public static void main(String[] args)

Main function Parse commandline parameters

Parameters:

args - String that contains program arguments

argument_error

private static void argument_error()

Prints error message

searchForPlace

public static String searchForPlace(String search)

Searches the HashMap places for a specific string

Parameters:

search - String that contains search value

Returns:

String with space-separated places

searchForPerson

public static String searchForPerson(String search)

Searches the HashMap persons for a specific string

Parameters:

search - String that contains search value

Returns:

String with space-separated persons

getContactPersons

public static List<Visit> getContactPersons(int id)

Lists all persons that were at the same place at the same time as a specific person. Only if the place is indoor

Parameters:

id - Contains the id of a person

Returns:

List that contains visits

getVisitors

public static List<Visit> getVisitors(String s)

Lists all Persons that were at the same place (id) at the same time. If the place is indoor, the contact persons of each person is added to the result too.

Parameters:

s - contains program argument (id of place and date string, separated by comma)

Returns:

List that contains visits

getSearchString

public static String getSearchString(String s)

Extracts string from String. Exits program if string is empty, blank or not available

Parameters:

s - Contains program argument

Returns:

extracted string

parseArguments

public static void parseArguments(String args)

Parse commandline arguments and run specific functions after

Parameters:

args - Commandline arguments