Module 3 Solution

sarah · sarah · commit bfac1f40a2bd · 2018-05-29T17:21:30.000-04:00
diff --git a/book_store.db b/book_store.db
diff --git a/src/main/java/com/pluralsight/BookDAO.java b/src/main/java/com/pluralsight/BookDAO.java
@@ -102,4 +102,22 @@ public void deleteBook(int id) {
         e.printStackTrace();
       }
     }
+
+    public void updateBook(Book book) {
+      String SQL = "UPDATE book SET title = ?, author = ?, price = ? " +
+                   "WHERE id = ?";
+
+      try {
+        PreparedStatement statement = jdbcConnection.prepareStatement(SQL);
+        statement.setString(1, book.getTitle());
+        statement.setString(2, book.getAuthor());
+        statement.setFloat(3, book.getPrice());
+        statement.setInt(4, book.getId());
+
+        statement.executeUpdate();
+        statement.close();
+      } catch (SQLException e) {
+        e.printStackTrace();
+      }
+    }
 }
diff --git a/src/main/java/com/pluralsight/ControllerServlet.java b/src/main/java/com/pluralsight/ControllerServlet.java
@@ -64,6 +64,9 @@ public void doGet(HttpServletRequest request, HttpServletResponse response)
           break;
 				case "/edit":
 					showEditForm(request, response);
+          break;
+				case "/update":
+					updateBook(request, response);
           break;
         default:
 				   listBooks(request, response);
@@ -128,6 +131,19 @@ private void showEditForm(HttpServletRequest request, HttpServletResponse respon
 			dispatcher.forward(request, response);
 		}
 
+	private void updateBook(HttpServletRequest request, HttpServletResponse response)
+		throws ServletException, IOException {
+			int id = Integer.parseInt( request.getParameter("id") );
+			String title = request.getParameter("booktitle");
+			String author = request.getParameter("bookauthor");
+			String price = request.getParameter("bookprice");
+
+			Book newBook = new Book(id, title, author, Float.parseFloat(price) );
+
+			bookDAO.updateBook(newBook);
+			response.sendRedirect("list");
+		}
+
 	/**
 	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
 	 */
