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Commit 337b72c

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DylanW01DylanW01
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GetLoans() working w/ endpoint
1 parent c584948 commit 337b72c

6 files changed

Lines changed: 285 additions & 31 deletions

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‎.idea/sqldialects.xml‎

Lines changed: 7 additions & 0 deletions
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‎src/main/java/Book.java‎

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import EJB.BookBean;
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import com.google.gson.Gson;
3+
import com.mongodb.client.FindIterable;
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import com.mongodb.client.MongoCursor;
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import jakarta.ejb.EJB;
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import jakarta.servlet.ServletException;
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import jakarta.servlet.annotation.WebServlet;
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import jakarta.servlet.http.HttpServlet;
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import jakarta.servlet.http.HttpServletRequest;
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import jakarta.servlet.http.HttpServletResponse;
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import org.bson.Document;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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@WebServlet(name = "Books", value = "/books")
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public class Book extends HttpServlet {
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@EJB
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BookBean bookBean;
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@Override
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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response.setContentType("application/json");
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PrintWriter out = response.getWriter();
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FindIterable<Document> foundBooks = bookBean.getBooks();
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MongoCursor<Document> cursor = foundBooks.iterator();
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List<Objects.Book> books = new ArrayList<Objects.Book>();
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try {
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while (cursor.hasNext()) {
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Document doc = cursor.next();
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Objects.Book book = new Objects.Book(
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doc.get("_id").toString(),
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doc.get("Title").toString(),
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doc.get("Author").toString(),
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doc.get("ISBN").toString(),
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(Integer) doc.get("Pages"),
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(Date) doc.get("Added"),
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(Boolean) doc.get("OnLoan"));
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books.add(book);
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}
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} finally {
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cursor.close();
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}
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String booksJsonString = new Gson().toJson(books);
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out.print(booksJsonString);
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out.flush();
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}
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@Override
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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}
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public void createCustomer(Document customer) {
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}
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}

‎src/main/java/EJB/BookOracleBean.java‎

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package EJB;
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import Objects.loanModel;
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import jakarta.ejb.EJB;
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import jakarta.ejb.Stateless;
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import java.sql.*;
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import java.util.ArrayList;
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import java.util.Calendar;
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import java.util.Date;
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@Stateless(name = "BookOracleEJB")
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public class BookOracleBean {
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@EJB
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OracleClientProviderBean oracleClientProviderBean;
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public void markAsBorrowed(int bookId) {
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Connection con = oracleClientProviderBean.getOracleClient();
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String insertLoan = "UPDATE books SET on_loan = 1 WHERE book_id = ?";
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try (PreparedStatement preparedStatement = con.prepareStatement(insertLoan)) {
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preparedStatement.setInt(1, bookId);
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preparedStatement.executeUpdate();
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} catch (SQLException e) {
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// Handle any potential exceptions here
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e.printStackTrace();
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}
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}
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public void markAsReturned(int bookId) {
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Connection con = oracleClientProviderBean.getOracleClient();
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String insertLoan = "UPDATE books SET on_loan = 0 WHERE book_id = ?";
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try (PreparedStatement preparedStatement = con.prepareStatement(insertLoan)) {
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preparedStatement.setInt(1, bookId);
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preparedStatement.executeUpdate();
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} catch (SQLException e) {
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// Handle any potential exceptions here
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e.printStackTrace();
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}
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}
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}

‎src/main/java/EJB/LoanOracleBean.java‎

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package EJB;
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import Objects.loanModel;
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import jakarta.ejb.EJB;
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import jakarta.ejb.Stateless;
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7+
import java.util.Calendar;
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import java.util.Date;
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import java.util.ArrayList;
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import java.sql.*;
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@Stateless(name = "LoanOracleEJB")
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public class LoanOracleBean {
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@EJB
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OracleClientProviderBean oracleClientProviderBean;
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public void createLoan(loanModel loan) {
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Date currentDate = new Date();
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(currentDate);
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calendar.add(Calendar.DAY_OF_MONTH, 14);
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Date dateAfterTwoWeeks = calendar.getTime();
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String insertLoan = "INSERT INTO loans"
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+ "(book_id, user_id, return_by, returned)" + "VALUES ("
27+
+ "'" + loan.getBookId() + "',"
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+ "'" + loan.getUserId() + "',"
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+ "'" + dateAfterTwoWeeks + "',"
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+ "0,";
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32+
Statement stmt = null;
33+
try {
34+
Connection con = oracleClientProviderBean.getOracleClient();
35+
stmt = con.createStatement();
36+
37+
System.out.println(insertLoan);
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39+
stmt.executeUpdate(insertLoan);
40+
41+
stmt.close();
42+
} catch(SQLException e) {
43+
e.printStackTrace();
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}
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}
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47+
public ArrayList<loanModel> getLoans() {
48+
String query = "SELECT l.LOAN_ID LOAN_ID," +
49+
"l.BOOK_ID BOOK_ID," +
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"l.USER_ID USER_ID," +
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"l.RETURN_BY RETURN_BY," +
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"l.RETURNED_ON RETURNED_ON," +
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"l.RETURNED RETURNED," +
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"u.FIRST_NAME FIRST_NAME," +
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"u.LAST_NAME LAST_NAME," +
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"u.EMAIL EMAIL," +
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"b.TITLE TITLE," +
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"b.ISBN ISBN," +
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"b.PAGES PAGES," +
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"a.FIRST_NAME AUTHOR_FIRST_NAME," +
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"a.LAST_NAME AUTHOR_LAST_NAME FROM loans l " +
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"INNER JOIN library_users u ON l.user_id = u.user_id " +
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"INNER JOIN books b ON b.book_id = l.book_id " +
64+
"INNER JOIN authors a ON b.author_id = a.author_id";
65+
ArrayList loans_list = new ArrayList();
66+
Statement stmt = null;
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68+
try {
69+
Connection con = oracleClientProviderBean.getOracleClient();
70+
stmt = con.createStatement();
71+
ResultSet rs = stmt.executeQuery(query);
72+
73+
while (rs.next()) {
74+
loanModel loan = new loanModel();
75+
loan.setLoanId(rs.getLong("LOAN_ID"));
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loan.setBookId(rs.getLong("BOOK_ID"));
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loan.setUserId(rs.getLong("USER_ID"));
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loan.setReturnBy(rs.getDate("RETURN_BY"));
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loan.setReturnedOn(rs.getDate("RETURNED_ON"));
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loan.setReturned(rs.getBoolean("RETURNED"));
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loan.setUserFirstName(rs.getString("FIRST_NAME"));
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loan.setUserLastName(rs.getString("LAST_NAME"));
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loan.setUserEmail(rs.getString("EMAIL"));
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loan.setBookTitle(rs.getString("TITLE"));
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loan.setBookIsbn(rs.getLong("ISBN"));
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loan.setAuthorFirstName(rs.getString("AUTHOR_FIRST_NAME"));
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loan.setAuthorLastName(rs.getString("AUTHOR_LAST_NAME"));
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loans_list.add(loan);
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}
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stmt.close();
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return loans_list;
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} catch(SQLException e) {
94+
e.printStackTrace();
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}
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return null;
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}
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}

‎src/main/java/Loans.java‎

Lines changed: 12 additions & 31 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,6 @@
1-
import EJB.LoanBean;
2-
import EJB.BookBean;
1+
import EJB.LoanOracleBean;
2+
import EJB.BookOracleBean;
3+
import Objects.loanModel;
34
import com.google.gson.Gson;
45
import com.mongodb.client.AggregateIterable;
56
import jakarta.ejb.EJB;
@@ -21,54 +22,34 @@
2122
@WebServlet(name = "Loans", value = "/loans")
2223
public class Loans extends HttpServlet {
2324
@EJB
24-
LoanBean loanBean;
25+
LoanOracleBean loanBean;
2526
@EJB
26-
BookBean bookBean;
27+
BookOracleBean bookBean;
2728

2829
@Override
2930
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
3031
response.setContentType("application/json");
3132

3233
PrintWriter out = response.getWriter();
33-
AggregateIterable<Document> result = loanBean.getLoans();
34-
35-
// Iterate through the aggregateIterable and store the documents in a list
36-
List<Document> documents = new ArrayList<>();
37-
result.into(documents);
34+
ArrayList<loanModel> result = loanBean.getLoans();
3835

3936
// Convert the list of documents to a JSON array
4037
Gson gson = new Gson();
41-
String jsonArray = gson.toJson(documents);
38+
String jsonArray = gson.toJson(result);
4239

4340
out.print(jsonArray);
4441
out.flush();
4542
}
4643

4744
@Override
4845
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
49-
response.setContentType("text/html");
50-
5146
PrintWriter out = response.getWriter();
52-
out.println("Loan Created. <a href=\"http://localhost:8080/MongoDB-Library-1.0-SNAPSHOT/newloan.jsp\">Click Here</a> to go back");
53-
ObjectId userId = new ObjectId(request.getParameter("users"));
54-
ObjectId bookId = new ObjectId(request.getParameter("books"));
55-
56-
Date currentDate = new Date();
57-
Calendar calendar = Calendar.getInstance();
58-
calendar.setTime(currentDate);
59-
60-
calendar.add(Calendar.DAY_OF_MONTH, 14);
61-
62-
Date dateAfterTwoWeeks = calendar.getTime();
63-
64-
Document loan = new Document()
65-
.append("user_id", userId)
66-
.append("book_id", bookId)
67-
.append("return_by", dateAfterTwoWeeks)
68-
.append("return_date", null)
69-
.append("returned", false);
7047

48+
loanModel loan = new loanModel();
49+
out.print("Creating Loan");
50+
loan.setUserId(Integer.parseInt(request.getParameter("user_id")));
51+
loan.setBookId(Integer.parseInt(request.getParameter("user_id")));
7152
loanBean.createLoan(loan);
72-
bookBean.markAsBorrowed(request.getParameter("books"));
53+
bookBean.markAsBorrowed(Integer.parseInt(request.getParameter("books")));
7354
}
7455
}

‎src/main/java/Objects/loanModel.java‎

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package Objects;
2+
3+
import java.io.Serializable;
4+
import java.util.Date;
5+
6+
public class loanModel implements Serializable {
7+
private long LoanId;
8+
private long BookId;
9+
private long UserId;
10+
private Date ReturnBy;
11+
private Date ReturnedOn;
12+
private boolean Returned;
13+
private String UserFirstName;
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private String UserLastName;
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private String UserEmail;
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private String BookTitle;
17+
private long BookIsbn;
18+
private String AuthorFirstName;
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private String AuthorLastName;
20+
21+
22+
23+
24+
25+
26+
27+
28+
public void setLoanId(long LoanId) { this.LoanId = LoanId; }
29+
private long getLoanId() {
30+
return LoanId;
31+
}
32+
public void setBookId(long BookId) { this.BookId = BookId; }
33+
public long getBookId() { return BookId; }
34+
public void setUserId(long UserId) { this.UserId = UserId; }
35+
public long getUserId() { return UserId; }
36+
public void setReturnBy(Date ReturnBy) { this.ReturnBy = ReturnBy; }
37+
public Date getReturnBy() { return ReturnBy; }
38+
public void setReturnedOn(Date ReturnedOn) { this.ReturnedOn = ReturnedOn; }
39+
public Date getReturnedOn() { return ReturnedOn; }
40+
public void setReturned(boolean Returned) { this.Returned = Returned; }
41+
public boolean getReturned() { return Returned; }
42+
public void setUserFirstName(String UserFirstName) { this.UserFirstName = UserFirstName; }
43+
public String getUserFirstName() { return UserFirstName; }
44+
public void setUserLastName(String UserLastName) { this.UserLastName = UserLastName; }
45+
public String getUserLastName() { return UserLastName; }
46+
public void setUserEmail(String UserEmail) { this.UserEmail = UserEmail; }
47+
public String getUserEmail() { return UserEmail; }
48+
public void setBookTitle(String BookTitle) { this.BookTitle = BookTitle; }
49+
public String getBookTitle() { return BookTitle; }
50+
public void setBookIsbn(long BookIsbn) { this.BookIsbn = BookIsbn; }
51+
public long getBookIsbn() { return BookIsbn; }
52+
public void setAuthorFirstName(String AuthorFirstName) { this.AuthorFirstName = AuthorFirstName; }
53+
public String getAuthorFirstName() { return AuthorFirstName; }
54+
public void setAuthorLastName(String AuthorLastName) { this.AuthorLastName = AuthorLastName; }
55+
public String getAuthorLastName() { return AuthorLastName; }
56+
57+
}

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