Erinevus lehekülje "ITI0011-2015:harjutus 10" redaktsioonide vahel

Allikas: Kursused
Mine navigeerimisribale Mine otsikasti
48. rida: 48. rida:
  
 
== Mall ==
 
== Mall ==
 +
 +
BookShop.java
 +
<source lang="java">
 +
import java.util.ArrayList;
 +
import cs.ttu.ee.BookShopApi;
 +
import cs.ttu.ee.SimpleBookShop;
 +
 +
 +
/**
 +
* BookShop class.
 +
* Simplified implementation of BookShop
 +
* Does filtering and basic queries.
 +
*/
 +
public class BookShop extends SimpleBookShop {
 +
 +
/**
 +
* Instance of BookShopApi, used to access
 +
* Google Books
 +
*/
 +
private BookShopApi bookShopApi;
 +
 +
/**
 +
* Last api query result.
 +
*/
 +
private String lastResponse = "";
 +
 +
public BookShop(BookShopApi _bookShopApi) {
 +
bookShopApi = _bookShopApi;
 +
}
 +
 +
/**
 +
* Make api query.
 +
* Uses BookStoreApi functionality to get XML response from Google Books
 +
* Every time this function is called, latest XML state is saved.
 +
* If previous query failed lastResponse equals to empty string.
 +
* Otherwise lastResult is
 +
* @param search title of book
 +
*/
 +
public void query(String searchString) {
 +
// TODO: implement
 +
}
 +
 +
/**
 +
* Find total items matched by searchString.
 +
* Api uses paging, not all results are
 +
* displayed under result, however, total
 +
* results is displayed inside <totalItems> element
 +
*
 +
* If last query was unsuccessful, 0 is returned.
 +
*
 +
* @return Total items matched by query.
 +
*/
 +
public int getTotalRecordsInResponse() {
 +
// TODO: implement
 +
return Integer.MIN_VALUE;
 +
}
 +
 +
 +
/**
 +
* Finds all possbile book titles.
 +
* Duplicates may occur.
 +
*
 +
* Title can be found inside <title> tag.
 +
* If last query was unsuccessful, empty ArrayList is returned.
 +
*
 +
* @return All possible book names matched by searchString
 +
*/
 +
public ArrayList<String> getPossibleBookTitles() {
 +
// TODO: implement
 +
return null;
 +
}
 +
 +
/**
 +
* Finds all authors found in last response.
 +
* Does not include duplicate authors.
 +
* If last query was unsuccessful, empty ArrayList is returned.
 +
*
 +
* Author can be found inside <authors> element. (Notice non plural form)
 +
* NB! Multiple <authors> element may occur.
 +
*
 +
* @return List of authors found in last response
 +
*/
 +
public ArrayList<String> getPossibleAuthors() {
 +
// TODO: implement
 +
return null;
 +
}
 +
 +
/**
 +
* Finds book with the most number of pages
 +
*
 +
* Page count can be found inside  <pageCount> element
 +
* @return Title of book.
 +
*/
 +
public String getBookWithMostPagesTitle() {
 +
// TODO: implement
 +
return null;
 +
}
 +
 +
/**
 +
* Finds all book titles where pageCount < n
 +
*
 +
* Page count can be found inside  <pageCount> element
 +
* @param n maximum amount of pages
 +
* @return list of books with less than n pages
 +
*/
 +
public ArrayList<String> getBookWithLessThanNPagesTitles(int n) {
 +
// TODO: implement
 +
return null;
 +
}
 +
 +
 +
}
 +
 +
 +
</source>
 +
 +
Main.java:
 +
<source lang="java">
 +
import java.util.ArrayList;
 +
 +
import cs.ttu.ee.BookShopApi;
 +
 +
public class Main {
 +
 +
public static void main(String args[]) {
 +
BookShopApi bookShopApi = new BookShopApi();
 +
BookShop studentBookShop = new BookShop(bookShopApi);
 +
 +
// Test your code here
 +
studentBookShop.query("Intermediate Java programming");
 +
System.out.println(studentBookShop.getTotalRecordsInResponse());
 +
System.out.println(studentBookShop.getPossibleBookTitles());
 +
System.out.println(studentBookShop.getPossibleAuthors());
 +
System.out.println(studentBookShop.getBookWithMostPagesTitle());
 +
ArrayList<String> result = studentBookShop.getBookWithLessThanNPagesTitles(100);
 +
System.out.println(result);
 +
// etc ...
 +
 +
 +
 +
}
 +
}
 +
</source>

Redaktsioon: 24. märts 2015, kell 18:24

Testid alates 25. märtsist (või kui see teade ära kaob :) )

Harjutuse tähtaeg on 26.-27. märts.

Üldine informatsioon harjutuste kohta: ITI0011:harjutused.

Kirjeldus

Tuleb realiseerida klass BookStore, mis sõltub BookShopApi library'st, mille saab tõmmata Meedia:ITI0011-2015-BookStoreApiV02.zip. BookStoreApi library võimaldab pealkirjade (või pealkirja osa) järgi pärida infot raamatu(te) kohta.

Näiteks: <BookStoreInstance>.getBookByTitle("Tõde ja Õigus")

tagastab xml dokumendi http://pastebin.com/dSfNCHH8

BookStore peab laiendama SimpleBookStore klassi, mis tuleb kaasa BookShopApi teegiga.

BookStore peab olema eraldi defineeritud klass, mille konstruktor võtab argumendina ette BookShopApi objekti. BookShop klassis peab olema defineeritud 5 meetodit: getTotalRecordsInResponse, getPossibleBookTitles, getBookWithMostPagesTitle, getPossbileAuthors, query.

  • getTotalRecordsInResponse tagastab XML tulemusest <totalItems>X</totalItems> X väärtuse. Kui tulemus puudub või getBookByTitle viskab erindi, siis tagastada 0.
  • getPossibleBookTitles tagastab kõik raamatute nimed (see tähendab kõik väärtused, mis on <title> tagide vahel). Duplikaadid lubatud. Kui tulemus puudub võib getBookByTitle viskab erindi, siis tagatada tühi list.
  • getBookWithMostPagesTitle, tagastab raamatu pealkirja(<title>), millel on antud XML korral kõige rohkem lehekülgi. Kui getBookByTitle viskab erindi, siis tagastada tühi string ("")
  • getPossbileAuthors, tagastab kõik leitud raamatute autorid, seejuures tuleb arvestada, et ühte autorit ei tohi olla listis rohkem kui 1 kord. Raamatu autori leiab <authors> tagide vahelt. Tähelepanu <authors> tag sisaldab tegelikult ainulte ühte autorit, mitme autori puhul on lisatud <authors> tage mitu korda. Erindi korral tagastada tühi list.
  • getBookWithLessThanNPagesTitles tagastab listi pealkirjadest, mille puhul on lehekülgi vähem kui n. Erindi puhul tagastada tühi list.
  • query teeb päringu BookShopApi abiga ja salvestab viimase tulemuse klassimuutujasse lastResult. Kui tekib erind, siis viimane tulemus on võrdne tühja stringiga ("").

Kasulikke materjale:


Loodavat funktsioonid

  • public int getTotalRecordsInResponse()
  • public ArrayList<String> getPossibleBookTitles()
  • public String getBookWithMostPagesTitle()
  • public ArrayList<String> getPossibleAuthors()
  • public ArrayList<String> getBookWithLessThanNPagesTitles()
  • public void query(String search)


Example BookShopApi call: http://pastebin.com/9DcpBHe7

Mall

BookShop.java <source lang="java"> import java.util.ArrayList; import cs.ttu.ee.BookShopApi; import cs.ttu.ee.SimpleBookShop;


/** 

* BookShop class.
* Simplified implementation of BookShop 
* Does filtering and basic queries.
*/

public class BookShop extends SimpleBookShop {

/** * Instance of BookShopApi, used to access * Google Books */ private BookShopApi bookShopApi;

/** * Last api query result. */ private String lastResponse = "";

public BookShop(BookShopApi _bookShopApi) { bookShopApi = _bookShopApi; }

/** * Make api query. * Uses BookStoreApi functionality to get XML response from Google Books * Every time this function is called, latest XML state is saved. * If previous query failed lastResponse equals to empty string. * Otherwise lastResult is * @param search title of book */ public void query(String searchString) { // TODO: implement }

/** * Find total items matched by searchString. * Api uses paging, not all results are * displayed under result, however, total * results is displayed inside <totalItems> element * * If last query was unsuccessful, 0 is returned. * * @return Total items matched by query. */ public int getTotalRecordsInResponse() { // TODO: implement return Integer.MIN_VALUE; }


/** * Finds all possbile book titles. * Duplicates may occur. * * Title can be found inside <title> tag. * If last query was unsuccessful, empty ArrayList is returned. * * @return All possible book names matched by searchString */ public ArrayList<String> getPossibleBookTitles() { // TODO: implement return null; }

/** * Finds all authors found in last response. * Does not include duplicate authors. * If last query was unsuccessful, empty ArrayList is returned. * * Author can be found inside <authors> element. (Notice non plural form) * NB! Multiple <authors> element may occur. * * @return List of authors found in last response */ public ArrayList<String> getPossibleAuthors() { // TODO: implement return null; }

/** * Finds book with the most number of pages * * Page count can be found inside <pageCount> element * @return Title of book. */ public String getBookWithMostPagesTitle() { // TODO: implement return null; }

/** * Finds all book titles where pageCount < n * * Page count can be found inside <pageCount> element * @param n maximum amount of pages * @return list of books with less than n pages */ public ArrayList<String> getBookWithLessThanNPagesTitles(int n) { // TODO: implement return null; }


}


</source>

Main.java: <source lang="java"> import java.util.ArrayList;

import cs.ttu.ee.BookShopApi;

public class Main {

public static void main(String args[]) { BookShopApi bookShopApi = new BookShopApi(); BookShop studentBookShop = new BookShop(bookShopApi);

// Test your code here studentBookShop.query("Intermediate Java programming"); System.out.println(studentBookShop.getTotalRecordsInResponse()); System.out.println(studentBookShop.getPossibleBookTitles()); System.out.println(studentBookShop.getPossibleAuthors()); System.out.println(studentBookShop.getBookWithMostPagesTitle()); ArrayList<String> result = studentBookShop.getBookWithLessThanNPagesTitles(100); System.out.println(result); // etc ...


} } </source>

Pärit leheküljelt "http://courses.cs.taltech.ee/w/index.php?title=ITI0011-2015:harjutus_10&oldid=2176"