Merge remote-tracking branch 'origin/SPM-31'

src/main/java/de/hsel/spm/baudas/analysis/ShoppingCart.java

@@ -27,14 +27,12 @@ public class ShoppingCart implements Analysis<Map<List<String>, List<String>>> {
 
     @Override
     public Map<List<String>, List<String>> getResult() {
-        if(result != null) {
+        if (result != null) {
             return result;
         }
 
         result = new HashMap<>();
 
-        Apriori model = new Apriori();
-
         for (int i = 0; i < 11; i++) {
             instances.deleteAttributeAt(0);
         }
@@ -60,6 +58,8 @@ public class ShoppingCart implements Analysis<Map<List<String>, List<String>>> {
             e.printStackTrace();
         }
 
+        Apriori model = new Apriori();
+
         model.setTreatZeroAsMissing(true);
         try {
             model.buildAssociations(instances);
@@ -67,19 +67,19 @@ public class ShoppingCart implements Analysis<Map<List<String>, List<String>>> {
             e.printStackTrace();
         }
 
-        for(int i = 0; i < model.getAssociationRules().getRules().size();i++){
+        for (int i = 0; i < model.getAssociationRules().getRules().size(); i++) {
             AssociationRule rule = model.getAssociationRules().getRules().get(i);
 
             List<String> l1 = new ArrayList<>();
-            for(Item item : rule.getPremise()){
+            for (Item item : rule.getPremise()) {
                 l1.add(item.getAttribute().name());
             }
             List<String> l2 = new ArrayList<>();
-            for(Item item : rule.getConsequence()){
+            for (Item item : rule.getConsequence()) {
                 l2.add(item.getAttribute().name());
             }
 
-            result.put(l1,l2);
+            result.put(l1, l2);
         }
 
 

src/main/java/de/hsel/spm/baudas/web/ErrorCode.java

@@ -0,0 +1,35 @@
+package de.hsel.spm.baudas.web;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+/**
+ * all possible error codes.
+ *
+ * @author Julian Hinxlage
+ * @version 0.1
+ */
+@Getter
+@AllArgsConstructor
+public enum ErrorCode {
+    FILE_NOT_FOUND("Die hochgeladene Datei konnte nicht gefunden werden"),
+    EMPTY_FILE("Die hochgeladene Datei ist leer"),
+    INVALID_FORMAT("Die hochgeladene Datei hat ein falsches Format");
+
+    private String message;
+
+    /**
+     * is there a error code with this name ?.
+     *
+     * @param message string to search for
+     * @return error code exits ?
+     */
+    public static boolean exists(String message) {
+        for (ErrorCode code : values()) {
+            System.out.println(message + " == " + code.name());
+            if (code.name().equals(message))
+                return true;
+        }
+        return false;
+    }
+}

src/main/java/de/hsel/spm/baudas/web/Upload.java

@@ -1,6 +1,7 @@
 package de.hsel.spm.baudas.web;
 
 import org.jetbrains.annotations.NotNull;
+import weka.core.converters.CSVLoader;
 
 import javax.servlet.ServletException;
 import javax.servlet.annotation.MultipartConfig;
@@ -20,7 +21,7 @@ import java.nio.file.StandardCopyOption;
 /**
  * saves uploaded files.
  *
- * @author Johannes Theiner
+ * @author Johannes Theiner, Julian Hinxlage
  * @version 0.1
  * @since 0.1
  **/
@@ -31,16 +32,62 @@ public class Upload extends HttpServlet {
 
     private static final long serialVersionUID = 14144111845151L;
 
+    /**
+     * let weka check if the format is valid.
+     *
+     * @param stream input stream
+     * @return format valid
+     */
+    private boolean checkFormat(InputStream stream) {
+        CSVLoader loader = new CSVLoader();
+        try {
+            loader.setSource(stream);
+            return loader.getDataSet() != null;
+        } catch (Exception e) {
+            return false;
+        }
+    }
 
     @Override
-    protected void doPost(@NotNull HttpServletRequest req, HttpServletResponse resp)
-            throws ServletException, IOException {
+    protected void doPost(@NotNull HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
         req.setCharacterEncoding(StandardCharsets.UTF_8.name());
 
         Part filePart = req.getPart("file");
+
+        if (filePart == null) {
+            resp.sendRedirect("error.jsp?code=" + ErrorCode.FILE_NOT_FOUND);
+            return;
+        }
+
+        if (filePart.getSubmittedFileName() == null) {
+            resp.sendRedirect("error.jsp?code=" + ErrorCode.FILE_NOT_FOUND);
+            return;
+        }
+
         String fileName = Paths.get(filePart.getSubmittedFileName()).getFileName().toString();
+
+        if (fileName == null) {
+            resp.sendRedirect("error.jsp?code=" + ErrorCode.FILE_NOT_FOUND);
+            return;
+        }
+
         InputStream inputStream = filePart.getInputStream();
 
+        if (inputStream == null) {
+            resp.sendRedirect("error.jsp?code=" + ErrorCode.FILE_NOT_FOUND);
+            return;
+        }
+        if (inputStream.available() == 0) {
+            resp.sendRedirect("error.jsp?code=" + ErrorCode.EMPTY_FILE);
+            return;
+        }
+
+        if (!checkFormat(inputStream)) {
+            resp.sendRedirect("error.jsp?code=" + ErrorCode.INVALID_FORMAT);
+            return;
+        } else {
+            inputStream = filePart.getInputStream();
+        }
 
         Path path = Data.add(fileName);
         if (!Files.exists(path)) {
@@ -49,6 +96,7 @@ public class Upload extends HttpServlet {
 
         Files.copy(inputStream, path, StandardCopyOption.REPLACE_EXISTING);
 
+
         resp.sendRedirect("");
     }
 }

src/main/webapp/emptyHeader.jsp

@@ -0,0 +1,13 @@
+
+<%@include file="head.jsp"%>
+
+<!--Navbar-->
+<div class="navbar-fixed">
+    <nav class="nav-extended blue-grey darken-3 white-text row">
+        <a href="#" class="brand-logo hide-on-small-and-down center">BauDas</a>
+        <!--Navbar Items-->
+        <div class="nav-wrapper col 2 right">
+        </div>
+    </nav>
+</div>
+<br>

src/main/webapp/error.jsp

@@ -0,0 +1,32 @@
+<%@ page import="de.hsel.spm.baudas.web.ErrorCode" %>
+<%@ page import="java.nio.charset.StandardCharsets" %>
+<%@ page import="java.util.List" %>
+<%@ page import="java.util.Arrays" %>
+<%@ page import="java.util.ArrayList" %>
+<%@ page contentType="text/html;charset=UTF-8" %>
+<%@include file="emptyHeader.jsp"%>
+<% response.setCharacterEncoding(StandardCharsets.UTF_8.name()); %>
+<% request.setCharacterEncoding(StandardCharsets.UTF_8.name()); %>
+
+<%
+    String code = request.getParameter("code");
+
+    if(code != null && ErrorCode.exists(code)){
+        ErrorCode errorCode = ErrorCode.valueOf(code);
+%>
+
+<div class="row">
+    <div class="col s4 push-s4">
+        <div class="card-panel red darken-1">
+        <h5 class="white-text center-align">
+            <%= errorCode.getMessage()%>
+        </h5>
+        </div>
+    </div>
+</div>
+<%
+    }
+%>
+
+
+<%@include file="theming.jsp"%>

src/main/webapp/footer.jsp

@@ -5,14 +5,8 @@
         integrity="sha256-xKeoJ50pzbUGkpQxDYHD7o7hxe0LaOGeguUidbq6vis=" crossorigin="anonymous"></script>
 
 
-<!--Script für Materlialize-->
 <script type="text/javascript" src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
-<script type="text/javascript"
-        src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/google-palette@1.1.0/palette.min.js"></script>
-<script>
-    M.AutoInit();
-</script>
+<%@include file="theming.jsp"%>
 
 <script src="js/cache.js"></script>
 <script src="js/week_overview.js"></script>

src/main/webapp/head.jsp

@@ -0,0 +1,21 @@
+<% response.setCharacterEncoding(StandardCharsets.UTF_8.name()); %>
+<% request.setCharacterEncoding(StandardCharsets.UTF_8.name()); %>
+<!DOCTYPE html>
+<html lang="de">
+<head>
+    <title>BauDas</title>
+    <!--Import Google Icon Font-->
+    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
+    <!--Import materialize.css-->
+    <link type="text/css" rel="stylesheet"
+          href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css"
+          media="screen,projection"/>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.css"
+          integrity="sha256-aa0xaJgmK/X74WM224KMQeNQC2xYKwlAt08oZqjeF0E=" crossorigin="anonymous"/>
+    <meta charset="UTF-8">
+    <META HTTP-EQUIV="content-type" CONTENT="text/html; charset=utf-8">
+
+    <!--Let browser know website is optimized for mobile-->
+    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+
+</head>

src/main/webapp/index.jsp

@@ -1,6 +1,6 @@
 <%@ page import="java.nio.charset.StandardCharsets" %>
 <%@ page contentType="text/html;charset=UTF-8" %>
-<%@include file="header.jsp"%>
+<%@include file="menu.jsp"%>
 <% response.setCharacterEncoding(StandardCharsets.UTF_8.name()); %>
 <% request.setCharacterEncoding(StandardCharsets.UTF_8.name()); %>
 

src/main/webapp/menu.jsp

@@ -1,26 +1,6 @@
-<% response.setCharacterEncoding(StandardCharsets.UTF_8.name()); %>
-<% request.setCharacterEncoding(StandardCharsets.UTF_8.name()); %>
-<!DOCTYPE html>
-<html lang="de">
-<head>
-    <title>BauDas</title>
-    <!--Import Google Icon Font-->
-    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
-    <!--Import materialize.css-->
-    <link type="text/css" rel="stylesheet"
-          href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css"
-          media="screen,projection"/>
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.css"
-          integrity="sha256-aa0xaJgmK/X74WM224KMQeNQC2xYKwlAt08oZqjeF0E=" crossorigin="anonymous"/>
-    <meta charset="UTF-8">
-    <META HTTP-EQUIV="content-type" CONTENT="text/html; charset=utf-8">
 
-    <!--Let browser know website is optimized for mobile-->
-    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+<%@include file="head.jsp"%>
 
-
-</head>
-<body class="blue-grey lighten-5">
 <!--Navbar-->
 <div class="navbar-fixed">
     <nav class="nav-extended blue-grey darken-3 white-text row">
@@ -96,4 +76,4 @@
             </div>
         </li>
     </form>
-</ul>
+</ul>

src/main/webapp/theming.jsp

@@ -0,0 +1,5 @@
+<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/google-palette@1.1.0/palette.min.js"></script>
+<script>
+    M.AutoInit();
+</script>