Datenbanken

db/Converter.java

@@ -0,0 +1,214 @@
+package edu.hsog.db;
+
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.sql.Blob;
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import javax.imageio.ImageIO;
+import javax.swing.ImageIcon;
+import javax.swing.Icon;
+
+
+public class Converter {
+
+    public static Icon loadIconFromFile(String path) {
+        ImageIcon icon = new ImageIcon(path);
+        Image image = icon.getImage();
+        int maxX, maxY, max;
+        double ratio = 0;
+        maxX = image.getWidth(null);
+        maxY = image.getHeight(null);
+        max = Math.max(maxX, maxY);
+        ratio = (250.0 / (float) max);
+        image = image.getScaledInstance((int) (maxX * ratio),
+                (int) (maxY * ratio), Image.SCALE_DEFAULT);
+        ImageIcon ic = new ImageIcon(image);
+        return (Icon) ic;
+    }
+
+    public static ImageIcon image2ImageIcon(Image i) {
+        if (i == null) return null;
+
+        ImageIcon ic = new ImageIcon(i);
+        return ic;
+    }
+
+    public static Image imageIcon2Image(ImageIcon ic) {
+        if (ic == null) return null;
+
+        Image i = ic.getImage();
+        return i;
+    }
+
+    public static Blob imageIcon2Blob(ImageIcon myImageIcon, Connection con) {
+        if (myImageIcon == null) return null;
+        Blob myBlob = null;
+
+        try {
+
+            ByteArrayOutputStream myByteArrayOutputStream = new ByteArrayOutputStream();
+            BufferedImage buImg = new BufferedImage(myImageIcon.getIconWidth(), myImageIcon.getIconHeight(), BufferedImage.TYPE_INT_ARGB);
+            buImg.getGraphics().drawImage(myImageIcon.getImage(), 0, 0, myImageIcon.getImageObserver());
+            ImageIO.write(buImg, "png", myByteArrayOutputStream);
+            byte[] myByteArray = myByteArrayOutputStream.toByteArray();
+            myBlob = con.createBlob();
+            myBlob.setBytes(1, myByteArray);
+        } catch (Exception ex) {
+            Logger.getLogger(Converter.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        return myBlob;
+    }
+
+    public static Blob icon2Blob(Icon myIcon, Connection con) {
+        return imageIcon2Blob((ImageIcon) myIcon, con);
+    }
+
+    public static ImageIcon blob2ImageIcon(Blob myBlob) {
+
+        if (myBlob == null) return null;
+
+        ImageIcon myImageIcon = null;
+        try {
+            byte[] byteArray = myBlob.getBytes((long) 1, (int) myBlob.length());
+            myImageIcon = new ImageIcon(byteArray);
+
+        } catch (SQLException ex) {
+            Logger.getLogger(Converter.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        return myImageIcon;
+    }
+
+    public static Icon blob2Icon(Blob myBlob) {
+        return (Icon) blob2ImageIcon(myBlob);
+    }
+
+    public static BufferedImage iconToBufferedImage(Icon icon) {
+        // Create a buffered image with the same dimensions as the icon
+        BufferedImage image = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_ARGB);
+        Graphics g = image.createGraphics();
+
+        // Paint the icon onto the buffered image
+        icon.paintIcon(null, g, 0, 0);
+        g.dispose();
+
+        return image;
+    }
+
+    public static Icon mergeIcons(ArrayList<Icon> icons) {
+        int iconsPerRow = 3;
+        if (icons == null || icons.isEmpty()) {
+            throw new IllegalArgumentException("Die Icon-Liste darf nicht leer sein.");
+        }
+        if (iconsPerRow <= 0) {
+            throw new IllegalArgumentException("Die Anzahl der Icons pro Zeile muss größer als 0 sein.");
+        }
+
+        // Berechnung der Dimensionen des kombinierten Icons
+        int rows = (int) Math.ceil((double) icons.size() / iconsPerRow); // Gesamtanzahl der Zeilen
+        int maxWidth = 0;
+        int totalHeight = 0;
+        int[] rowHeights = new int[rows]; // Speichert die maximale Höhe jeder Zeile
+
+        for (int row = 0; row < rows; row++) {
+            int currentRowWidth = 0;
+            int currentRowHeight = 0;
+
+            for (int col = 0; col < iconsPerRow; col++) {
+                int index = row * iconsPerRow + col;
+                if (index >= icons.size()) break; // Keine weiteren Icons
+
+                Icon icon = icons.get(index);
+                currentRowWidth += icon.getIconWidth();
+                currentRowHeight = Math.max(currentRowHeight, icon.getIconHeight());
+            }
+
+            maxWidth = Math.max(maxWidth, currentRowWidth);
+            totalHeight += currentRowHeight;
+            rowHeights[row] = currentRowHeight;
+        }
+
+        // Neues kombiniertes Bild erstellen
+        BufferedImage combinedImage = new BufferedImage(maxWidth, totalHeight, BufferedImage.TYPE_INT_ARGB);
+        Graphics g = combinedImage.getGraphics();
+
+        // Icons zeichnen
+        int currentY = 0;
+        for (int row = 0; row < rows; row++) {
+            int currentX = 0;
+            for (int col = 0; col < iconsPerRow; col++) {
+                int index = row * iconsPerRow + col;
+                if (index >= icons.size()) break;
+
+                Icon icon = icons.get(index);
+                icon.paintIcon(null, g, currentX, currentY);
+                currentX += icon.getIconWidth();
+            }
+            currentY += rowHeights[row];
+        }
+
+        g.dispose();
+
+        // Kombiniertes Bild als Icon zurückgeben
+        return new ImageIcon(resizeTo250x250(combinedImage));
+    }
+
+    public static BufferedImage resizeTo250x250(BufferedImage originalImage) {
+        if (originalImage == null) {
+            throw new IllegalArgumentException("Das Bild darf nicht null sein.");
+        }
+
+        // Neue Dimensionen für das Bild
+        int targetWidth = 200;
+        int targetHeight = 300;
+
+        // Erstelle ein neues BufferedImage mit den Zielmaßen
+        BufferedImage resizedImage = new BufferedImage(targetWidth, targetHeight, BufferedImage.TYPE_INT_ARGB);
+
+        // Zeichne das originale Bild auf das neue Bild mit Skalierung
+        Graphics2D g2d = resizedImage.createGraphics();
+        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
+        g2d.drawImage(originalImage, 0, 0, targetWidth, targetHeight, null);
+        g2d.dispose();
+
+        return resizedImage;
+    }
+
+    public static Icon generatePatternIcon() {
+        // Bildgröße
+        int width = 250;
+        int height = 250;
+
+        // Erstelle ein BufferedImage
+        BufferedImage patternImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+
+        // Muster erzeugen (z.B. Rechteckmuster mit zufälligen Farben)
+        Graphics2D g2d = patternImage.createGraphics();
+
+        for (int y = 0; y < height; y += 25) { // Abstand der horizontalen Streifen
+            for (int x = 0; x < width; x += 25) { // Abstand der vertikalen Streifen
+                // Erzeuge eine zufällige Farbe
+                Color randomColor = new Color(
+                        (int) (Math.random() * 255), // Rot
+                        (int) (Math.random() * 255), // Grün
+                        (int) (Math.random() * 255)  // Blau
+                );
+
+                // Zeichne Rechtecke für das Muster
+                g2d.setColor(randomColor);
+                g2d.fillRect(x, y, 25, 25);
+            }
+        }
+
+        g2d.dispose();
+
+        // Rückgabe des generierten Musters als Icon
+        return new ImageIcon(patternImage);
+    }
+}
+
+

db/DBQueries.java

@@ -0,0 +1,447 @@
+package edu.hsog.db;
+
+import javax.swing.*;
+import java.lang.reflect.Type;
+import java.sql.*;
+import java.util.ArrayList;
+
+public class DBQueries {
+
+    // Count ohne try-with-resource und mit statement
+    public static int count() {
+
+        Connection con = Globals.getPoolConnection();
+        Statement st = null;
+        ResultSet rs = null;
+        try {
+            st = con.createStatement();
+            String q = "select count(*)\n" +
+                    "from gadgets";
+            rs = st.executeQuery(q);
+            rs.next();
+            return rs.getInt(1);
+
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        } finally {
+            try {
+                if (rs != null) rs.close();
+                if (st != null) st.close();
+                if (con != null) con.close();
+            } catch (SQLException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    // Count mit try-with-resource und mit statement
+    /*
+    public static int count() {
+    String query = "SELECT COUNT(*) FROM gadgets";
+
+    try (Connection con = Globals.getPoolConnection();
+         Statement st = con.createStatement();
+         ResultSet rs = st.executeQuery(query)) {
+
+        rs.next(); // Kein if, da COUNT(*) immer ein Ergebnis liefert
+        return rs.getInt(1);
+
+    } catch (SQLException e) {
+        throw new RuntimeException("Error while counting gadgets", e);
+    }
+    */
+
+    // Count mit try-with-resource und mit prepared-statement
+    /*
+    public static int count() {
+        String query = "SELECT COUNT(*) FROM gadgets";
+
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query);
+             ResultSet rs = pst.executeQuery()) {
+
+            rs.next(); // Kein if, da COUNT(*) immer ein Ergebnis liefert
+            return rs.getInt(1);
+
+        } catch (SQLException e) {
+            throw new RuntimeException("Error while counting gadgets", e);
+        }
+    }
+    */
+
+    // Login mit try-with-resource und mit statement
+    /*
+    public static boolean login(String username, String password) {
+
+        Connection con = Globals.getPoolConnection();
+        Statement st = null;
+        ResultSet rs = null;
+        try {
+            st = con.createStatement();
+
+            String q = "select count(*)\n" +
+                    "from users\n" +
+                    "where email = '" + username + "' and passwd = '" + password + "'";
+            rs = st.executeQuery(q);
+            rs.next();
+            int c = rs.getInt(1);
+            return (c == 1);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        } finally {
+            try {
+                if (rs != null) rs.close();
+                if (st != null) st.close();
+                if (con != null) con.close();
+            } catch (SQLException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+    */
+
+    // Login mit try-with-resource und mit prepared-statement
+    public static boolean login(String username, String password) {
+        String query = "SELECT COUNT(*) FROM users WHERE email = ? AND passwd = ?";
+
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)) {
+
+            // Parameter setzen
+            pst.setString(1, username);
+            pst.setString(2, password);
+
+            try (ResultSet rs = pst.executeQuery()) {
+                rs.next(); // Kein if notwendig, COUNT(*) liefert immer eine Zeile
+                int count = rs.getInt(1);
+                return count == 1;
+            }
+
+        } catch (SQLException e) {
+            throw new RuntimeException("Error during login attempt", e);
+        }
+    }
+
+    public static ArrayList showAll() {
+        String query = "SELECT  *  FROM gadgets";
+        ArrayList icons = new ArrayList<Icon>();
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)) {
+
+            // Parameter setzen
+            // pst.setString(1, username);
+            try (ResultSet rs = pst.executeQuery()) {
+                while (rs.next()) {
+                    Icon i = Converter.blob2Icon(rs.getBlob("cover"));
+                    icons.add(i);
+                }
+                return icons;
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException("Error during login attempt", e);
+        }
+    }
+
+    public static ImageIcon getImage(int z) {
+        String query = "SELECT * from gadgets order by url asc";
+
+        ImageIcon imIcon;
+
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)){
+             ResultSet rs = pst.executeQuery();
+
+             for(int i = 0; i<z;i++) {
+                 rs.next();
+             }
+             Blob b = rs.getBlob("COVER");
+             imIcon = Converter.blob2ImageIcon(b);
+
+             }catch (SQLException e) {
+            throw new RuntimeException("Error while counting gadgets", e);
+        }
+        return imIcon;
+    }
+
+    public static ImageIcon getImageByUrl(String partialUrl) {
+        String query = "SELECT * FROM gadgets WHERE url LIKE ?";
+
+        ImageIcon imIcon = null;
+
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)) {
+
+            pst.setString(1, "%" + partialUrl + "%");  // Teilstring-Suche
+            ResultSet rs = pst.executeQuery();
+
+            if (rs.next()) {
+                Blob b = rs.getBlob("COVER");
+                imIcon = Converter.blob2ImageIcon(b);
+            } else {
+                System.out.println("Keine passende URL gefunden für: " + partialUrl);
+            }
+
+        } catch (SQLException e) {
+            throw new RuntimeException("Fehler beim Abrufen des Bildes für URL-Teil: " + partialUrl, e);
+        }
+
+        return imIcon;
+    }
+    public static ImageIcon getImageByDesc(String desc) {
+        String query = "SELECT * FROM gadgets WHERE DESCRIPTION = ?";
+
+        ImageIcon imIcon = null;
+
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)) {
+
+            pst.setString(1, desc);
+            ResultSet rs = pst.executeQuery();
+
+            if (rs.next()) {
+                Blob b = rs.getBlob("COVER");
+                imIcon = Converter.blob2ImageIcon(b);
+            }
+
+        } catch (SQLException e) {
+            throw new RuntimeException("Fehler beim Abrufen des Bildes für URL: " + desc, e);
+        }
+
+        return imIcon;
+    }
+
+    public static void insertImageUrlEmail(String url, String email) {
+        String query = "insert into gadgets(url,email,cover)values(?,?,?)";
+        Icon icon = Converter.generatePatternIcon();
+
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)) {
+            Blob coverBlob = Converter.icon2Blob(icon,con);
+            // Parameter setzen
+            pst.setString(1, url);
+            pst.setString(2, email);
+            pst.setBlob(3,coverBlob);
+
+            pst.executeQuery();
+
+        } catch (SQLException e) {
+            throw new RuntimeException("Error during login attempt", e);
+        }
+    }
+
+    public static void updateItemLikeKeywords(String eingabe) {
+        String query = "update gadgets g set g.cover = ? where keywords like ?";
+        Icon icon = Converter.generatePatternIcon();
+
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)) {
+
+            // Parameter setzen
+            pst.setBlob(1,Converter.icon2Blob(icon,con));
+            pst.setString(2, eingabe);
+
+           pst.executeUpdate();
+        } catch (SQLException e) {
+            throw new RuntimeException("Error during login attempt", e);
+        }
+    }
+
+    public static ArrayList<Icon> iconListEmail(String username) {
+        String query = "SELECT cover from gadgets where email = ?";
+        Icon icon = Converter.generatePatternIcon();
+        ArrayList<Icon>myList = new ArrayList<>();
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)) {
+
+            pst.setString(1,username);
+            ResultSet rs = pst.executeQuery();
+
+            while (rs.next()){
+
+                icon = Converter.blob2Icon(rs.getBlob("cover"));
+                myList.add(icon);
+
+            }
+            return myList;
+        } catch (SQLException e) {
+            throw new RuntimeException("Error during login attempt", e);
+        }
+    }
+
+
+    public static int searchGadgetsUrlIndex(String url) {
+
+        Connection con = Globals.getPoolConnection();
+        Statement st = null;
+        ResultSet rs = null;
+        try {
+            st = con.createStatement();
+            String q = "SELECT * from gadgets";
+            rs = st.executeQuery(q);
+            int lineCounter = 1;
+            String foundURL = null;
+
+            while (rs.next()){
+                if(rs.getString(1).contains(url)){
+                    foundURL = url;
+                    break;
+                }
+                lineCounter ++;
+            }
+            if(foundURL != null){
+                return lineCounter;
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        } finally {
+            try {
+                if (rs != null) rs.close();
+                if (st != null) st.close();
+                if (con != null) con.close();
+            } catch (SQLException e) {
+                throw new RuntimeException(e);
+            }
+        }
+        return -1;
+    }
+
+    public static String zeilenSpalten(int z, int col) {
+        String query = "select * from bewertung order by url asc";
+
+        try (Connection con = Globals.getPoolConnection();
+             Statement st = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
+             ResultSet rs = st.executeQuery(query )) {
+
+            rs.next();
+            // Parameter setzen
+            rs.absolute(z);
+
+            if(col== 1){
+                return rs.getString("email");
+            }
+            if(col== 2){
+                return rs.getString("url");
+            }
+            if(col== 3){
+                return rs.getString("bewertung");
+            }
+            if(col== 4){
+                return rs.getString("kommentars");
+            }
+            } catch (SQLException ex) {
+            throw new RuntimeException(ex);
+        }
+
+
+        return "..";
+    }
+
+
+    public static DTO emailPassword(String teil) {
+        String query = "SELECT EMAIL,PASSWD FROM users WHERE email like ? ";
+
+        try (Connection con = Globals.getPoolConnection();
+             PreparedStatement pst = con.prepareStatement(query)) {
+
+            // Parameter setzen
+            pst.setString(1,"%"+ teil+"%");
+
+
+            ResultSet rs = pst.executeQuery();
+            rs.next(); // Kein if notwendig, COUNT(*) liefert immer eine Zeile
+
+            String email = rs.getString("EMAIL");
+            String passwd = rs.getString("PASSWD");
+
+            return new DTO(email,passwd);
+
+        } catch (SQLException e) {
+            throw new RuntimeException("Error during login attempt", e);
+        }
+    }
+
+    public static int sumGefallenUrl(String eingabe) {
+
+        Connection con = Globals.getPoolConnection();
+        Statement st = null;
+        ResultSet rs = null;
+        try {
+            st = con.createStatement();
+            String q = "select sum(gefallen) from bewertung where url like '%" + eingabe +"%' ";
+            rs = st.executeQuery(q);
+
+            if(rs.next()){
+                return rs.getInt(1);
+            }else {
+                return 0;
+            }
+
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        } finally {
+            try {
+                if (rs != null) rs.close();
+                if (st != null) st.close();
+                if (con != null) con.close();
+            } catch (SQLException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+
+    public static String firstKommentar (String eingabe) {
+        String query = "SELECT kommentar from bewertung order by kommentar asc";
+        int i = Integer.valueOf(eingabe);
+
+        try (Connection con = Globals.getPoolConnection();
+             Statement st = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY, ResultSet.HOLD_CURSORS_OVER_COMMIT);
+
+            ResultSet rs = st.executeQuery(query)) {
+            rs.absolute(i);
+            String kommentar = rs.getString("kommentar");
+            return kommentar;
+
+
+        } catch (SQLException e) {
+            throw new RuntimeException("Error during login attempt", e);
+        }
+    }
+
+    public static String Kommentar(String eingabe) {
+        Connection con = Globals.getPoolConnection();
+        Statement st = null;
+        ResultSet rs = null;
+        StringBuilder result = new StringBuilder();
+
+        try {
+            st = con.createStatement();
+            String q = "Select Kommentar from Bewertung where email Like '" + eingabe + "%'";
+            rs = st.executeQuery(q);
+
+            while (rs.next()) {
+                System.out.println("Erfolg");
+                result.append(rs.getString("Kommentar")).append("\n");
+            }
+
+            if (result.length() != 0)
+                return result.toString();
+            else
+                return "Kein Kommentar gefunden";
+
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        } finally {
+            try {
+                if (rs != null) rs.close();
+                if (st != null) st.close();
+                if (con != null) con.close();
+            } catch (SQLException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+
+
+}

db/DTO.java

@@ -0,0 +1,29 @@
+package edu.hsog.db;
+
+public class DTO {
+
+    String email;
+    String password;
+
+
+    public DTO(String email, String password) {
+        this.email = email;
+        this.password = password;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+}

db/GUI.form

@@ -0,0 +1,291 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="edu.hsog.db.GUI">
+  <grid id="27dc6" binding="masterPanel" layout-manager="GridLayoutManager" row-count="3" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+    <margin top="0" left="0" bottom="0" right="0"/>
+    <constraints>
+      <xy x="20" y="20" width="853" height="733"/>
+    </constraints>
+    <properties/>
+    <border type="none"/>
+    <children>
+      <grid id="3b282" layout-manager="GridLayoutManager" row-count="3" column-count="5" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+        <margin top="0" left="0" bottom="0" right="0"/>
+        <constraints>
+          <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
+        </constraints>
+        <properties/>
+        <border type="none"/>
+        <children>
+          <component id="6ea20" class="javax.swing.JButton" binding="exitButton" default-binding="true">
+            <constraints>
+              <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <name value="exitJBtn"/>
+              <text value="Exit"/>
+            </properties>
+          </component>
+          <vspacer id="c6372">
+            <constraints>
+              <grid row="2" column="0" row-span="1" col-span="1" vsize-policy="6" hsize-policy="1" anchor="0" fill="2" indent="0" use-parent-layout="false"/>
+            </constraints>
+          </vspacer>
+          <component id="13850" class="javax.swing.JButton" binding="initConPoolButton" default-binding="true">
+            <constraints>
+              <grid row="0" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <name value="connectionJBtn"/>
+              <text value="InitConPool"/>
+            </properties>
+          </component>
+          <component id="fe5ec" class="javax.swing.JButton" binding="countButton" default-binding="true">
+            <constraints>
+              <grid row="0" column="2" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <name value="countJBtn"/>
+              <text value="Count"/>
+            </properties>
+          </component>
+          <component id="34ca" class="javax.swing.JLabel" binding="conLabel">
+            <constraints>
+              <grid row="0" column="3" row-span="1" col-span="1" vsize-policy="0" hsize-policy="0" anchor="8" fill="0" indent="0" use-parent-layout="false">
+                <minimum-size width="200" height="-1"/>
+              </grid>
+            </constraints>
+            <properties>
+              <name value="statusJLbl"/>
+              <text value="nicht verbunden"/>
+            </properties>
+          </component>
+          <component id="ca783" class="javax.swing.JLabel" binding="countJLabel">
+            <constraints>
+              <grid row="0" column="4" row-span="1" col-span="1" vsize-policy="0" hsize-policy="0" anchor="8" fill="0" indent="0" use-parent-layout="false">
+                <minimum-size width="200" height="-1"/>
+              </grid>
+            </constraints>
+            <properties>
+              <name value="countJLbl"/>
+              <text value="Count:"/>
+            </properties>
+          </component>
+          <component id="3c646" class="javax.swing.JTextField" binding="userTextField">
+            <constraints>
+              <grid row="1" column="0" row-span="1" col-span="2" vsize-policy="0" hsize-policy="6" anchor="8" fill="1" indent="1" use-parent-layout="false">
+                <preferred-size width="150" height="-1"/>
+              </grid>
+            </constraints>
+            <properties>
+              <name value="userJTxt"/>
+              <text value="abc@web.de"/>
+            </properties>
+          </component>
+          <component id="59b67" class="javax.swing.JTextField" binding="passwdTextField">
+            <constraints>
+              <grid row="1" column="2" row-span="1" col-span="1" vsize-policy="0" hsize-policy="6" anchor="8" fill="1" indent="0" use-parent-layout="false">
+                <preferred-size width="150" height="-1"/>
+              </grid>
+            </constraints>
+            <properties>
+              <name value="passwdJTxt"/>
+              <text value="abc"/>
+            </properties>
+          </component>
+          <component id="b6671" class="javax.swing.JButton" binding="loginButton" default-binding="true">
+            <constraints>
+              <grid row="1" column="3" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <name value="loginJBtn"/>
+              <text value="Login"/>
+            </properties>
+          </component>
+          <component id="399af" class="javax.swing.JButton" binding="registerButton" default-binding="true">
+            <constraints>
+              <grid row="1" column="4" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <name value="registerJBtn"/>
+              <text value="Register"/>
+            </properties>
+          </component>
+        </children>
+      </grid>
+      <grid id="15252" layout-manager="GridLayoutManager" row-count="13" column-count="2" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+        <margin top="0" left="0" bottom="0" right="0"/>
+        <constraints>
+          <grid row="1" column="0" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
+        </constraints>
+        <properties/>
+        <border type="none"/>
+        <children>
+          <component id="33b7e" class="javax.swing.JLabel" binding="imageLabel">
+            <constraints>
+              <grid row="0" column="0" row-span="10" col-span="1" vsize-policy="0" hsize-policy="0" anchor="8" fill="0" indent="2" use-parent-layout="false">
+                <minimum-size width="300" height="300"/>
+              </grid>
+            </constraints>
+            <properties>
+              <text value="image"/>
+            </properties>
+          </component>
+          <component id="990f4" class="javax.swing.JButton" binding="loadImageButton" default-binding="true">
+            <constraints>
+              <grid row="11" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="LoadImage"/>
+            </properties>
+          </component>
+          <component id="ec5bb" class="javax.swing.JButton" binding="getImageByZahlGadgetsAscButton" default-binding="true">
+            <constraints>
+              <grid row="0" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="getImageByZahl(GadgetsAsc)"/>
+            </properties>
+          </component>
+          <component id="f7d4f" class="javax.swing.JButton" binding="getImageByUrlGadgetsURLButton" default-binding="true">
+            <constraints>
+              <grid row="1" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="getImageByUrl(GadgetsURL)"/>
+            </properties>
+          </component>
+          <component id="947a0" class="javax.swing.JButton" binding="getImageByDescGadgetsDescButton" default-binding="true">
+            <constraints>
+              <grid row="2" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="getImageByDesc(GadgetsDesc)"/>
+            </properties>
+          </component>
+          <component id="a1b75" class="javax.swing.JButton" binding="insertImageByURLEmailButton" default-binding="true">
+            <constraints>
+              <grid row="3" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="insertImageByURLEmail"/>
+            </properties>
+          </component>
+          <component id="fdbad" class="javax.swing.JButton" binding="updateBildLikeKeywordsButton" default-binding="true">
+            <constraints>
+              <grid row="4" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="updateBildLikeKeywords"/>
+            </properties>
+          </component>
+          <component id="200d1" class="javax.swing.JButton" binding="iconListEmailButton" default-binding="true">
+            <constraints>
+              <grid row="5" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="iconListEmail"/>
+            </properties>
+          </component>
+          <component id="41883" class="javax.swing.JButton" binding="searchGadgetsByUrlButton" default-binding="true">
+            <constraints>
+              <grid row="6" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="kommentarByEmal"/>
+            </properties>
+          </component>
+          <component id="58173" class="javax.swing.JButton" binding="zeilenSpaltenButton" default-binding="true">
+            <constraints>
+              <grid row="7" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="zeilenSpalten"/>
+            </properties>
+          </component>
+          <component id="3450a" class="javax.swing.JButton" binding="emailPasswordButton" default-binding="true">
+            <constraints>
+              <grid row="8" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="emailPassword"/>
+            </properties>
+          </component>
+          <component id="5edc5" class="javax.swing.JButton" binding="sumGefallenByURLButton" default-binding="true">
+            <constraints>
+              <grid row="9" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="sumGefallenByURL"/>
+            </properties>
+          </component>
+          <component id="9f379" class="javax.swing.JButton" binding="ersteKommentarButton" default-binding="true">
+            <constraints>
+              <grid row="10" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="ersteKommentar"/>
+            </properties>
+          </component>
+          <component id="98de4" class="javax.swing.JButton" binding="getBestRatedGadgetsButton" default-binding="true">
+            <constraints>
+              <grid row="11" column="1" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties>
+              <text value="kommentarByEmail"/>
+            </properties>
+          </component>
+          <grid id="1a76d" layout-manager="GridLayoutManager" row-count="1" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+            <margin top="0" left="0" bottom="0" right="0"/>
+            <constraints>
+              <grid row="12" column="1" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties/>
+            <border type="none"/>
+            <children/>
+          </grid>
+        </children>
+      </grid>
+      <grid id="f9dab" layout-manager="GridLayoutManager" row-count="2" column-count="5" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+        <margin top="0" left="0" bottom="0" right="0"/>
+        <constraints>
+          <grid row="2" column="0" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
+        </constraints>
+        <properties/>
+        <border type="none"/>
+        <children>
+          <component id="9cc72" class="javax.swing.JSlider" binding="slider1" default-binding="true">
+            <constraints>
+              <grid row="1" column="4" row-span="1" col-span="1" vsize-policy="0" hsize-policy="6" anchor="8" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+            <properties/>
+          </component>
+          <hspacer id="9c732">
+            <constraints>
+              <grid row="1" column="0" row-span="1" col-span="1" vsize-policy="1" hsize-policy="6" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+          </hspacer>
+          <vspacer id="ce4ef">
+            <constraints>
+              <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="6" hsize-policy="1" anchor="0" fill="2" indent="0" use-parent-layout="false"/>
+            </constraints>
+          </vspacer>
+          <hspacer id="e9c63">
+            <constraints>
+              <grid row="1" column="1" row-span="1" col-span="1" vsize-policy="1" hsize-policy="6" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+          </hspacer>
+          <hspacer id="f0885">
+            <constraints>
+              <grid row="1" column="2" row-span="1" col-span="1" vsize-policy="1" hsize-policy="6" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+          </hspacer>
+          <hspacer id="24870">
+            <constraints>
+              <grid row="1" column="3" row-span="1" col-span="1" vsize-policy="1" hsize-policy="6" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+            </constraints>
+          </hspacer>
+        </children>
+      </grid>
+    </children>
+  </grid>
+</form>

db/GUI.java

@@ -0,0 +1,214 @@
+package edu.hsog.db;
+
+import javax.swing.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.ArrayList;
+import java.util.Random;
+
+public class GUI {
+    public GUI() {
+
+        slider1.setMinimum(1);
+        slider1.setMaximum(5);
+        slider1.setMajorTickSpacing(1);
+        slider1.setPaintTicks(true);
+        slider1.setPaintLabels(true);
+        slider1.setValue(3);
+
+
+        exitButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                System.exit(0);
+            }
+        });
+        initConPoolButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                Globals.initConnectionPool();
+                conLabel.setText("verbunden");
+            }
+        });
+        countButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                int c = DBQueries.count();
+                countJLabel.setText("Count: " + c);
+            }
+        });
+        loginButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                String user = userTextField.getText();
+                String passwd = passwdTextField.getText();
+                boolean loggedIn = DBQueries.login(user, passwd);
+                if (loggedIn) {
+                    conLabel.setText("logged in");
+
+                    Globals.currentmail = user;
+                } else {
+                    Globals.currentmail = null;
+
+                    conLabel.setText("not logged in");
+                }
+            }
+        });
+        loadImageButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                imageLabel.setIcon(Converter.mergeIcons(DBQueries.showAll()));
+
+
+            }
+        });
+        getImageByZahlGadgetsAscButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                String eingabe = userTextField.getText();
+                ImageIcon i = DBQueries.getImage(Integer.parseInt(eingabe));
+                imageLabel.setIcon(i);
+            }
+        });
+        getImageByUrlGadgetsURLButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                String urlEingabe = userTextField.getText().trim();
+                ImageIcon i = DBQueries.getImageByUrl(urlEingabe);
+                imageLabel.setIcon(i);
+            }
+        });
+        getImageByDescGadgetsDescButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                String descEingabe = userTextField.getText().trim();
+                ImageIcon i = DBQueries.getImageByDesc(descEingabe);
+                imageLabel.setIcon(i);
+            }
+        });
+
+        insertImageByURLEmailButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                Random random = new Random();
+                int randomNumber = random.nextInt(1000);
+                String gadgetUrl = Integer.toString(randomNumber);
+                String eingabe = "abc@web.de";
+                DBQueries.insertImageUrlEmail(gadgetUrl,eingabe);
+
+            }
+        });
+        updateBildLikeKeywordsButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                    String eingabe = "%"+userTextField.getText()+"%";
+                    DBQueries.updateItemLikeKeywords(eingabe);
+            }
+        });
+        iconListEmailButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                ArrayList<Icon>ergebnis = DBQueries.iconListEmail(userTextField.getText());
+                imageLabel.setIcon(Converter.mergeIcons(ergebnis));
+
+            }
+        });
+        searchGadgetsByUrlButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+
+                int ergebnis = DBQueries.searchGadgetsUrlIndex(userTextField.getText());
+                imageLabel.setText(" :"+ ergebnis);
+            }
+        });
+        zeilenSpaltenButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                int row = Integer.parseInt(userTextField.getText());
+                int col = Integer.parseInt((passwdTextField.getText()));
+                String ergebnis = DBQueries.zeilenSpalten(row,col);
+                imageLabel.setText(ergebnis);
+            }
+        });
+        emailPasswordButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+            DTO ergebnis = DBQueries.emailPassword(userTextField.getText());
+
+            String s1 = ergebnis.email;
+            String s2 = ergebnis.password;
+
+            passwdTextField.setText(s1 +" #" +s2);
+
+            }
+        });
+        sumGefallenByURLButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                String eingabe = userTextField.getText();
+                passwdTextField.setText(String.valueOf(DBQueries.sumGefallenUrl(eingabe)));
+            }
+        });
+        ersteKommentarButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                String eingabe = userTextField.getText();
+                imageLabel.setText(DBQueries.firstKommentar(eingabe));
+            }
+        });
+        getBestRatedGadgetsButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+
+                String eingabe = userTextField.getText();
+                passwdTextField.setText(DBQueries.Kommentar(eingabe));
+                System.out.println(DBQueries.Kommentar(eingabe));
+            }
+        });
+
+    }
+
+    public JPanel getMasterPanel() {
+        return masterPanel;
+    }
+
+    private JPanel masterPanel;
+    private JButton exitButton;
+    private JButton initConPoolButton;
+    private JButton countButton;
+    private JLabel conLabel;
+    private JLabel countJLabel;
+    private JTextField userTextField;
+    private JTextField passwdTextField;
+    private JButton loginButton;
+    private JButton registerButton;
+    private JLabel imageLabel;
+    private JButton loadImageButton;
+    private JSlider slider1;
+    private JButton getImageByZahlGadgetsAscButton;
+    private JButton getImageByUrlGadgetsURLButton;
+    private JButton getImageByDescGadgetsDescButton;
+    private JButton insertImageByURLEmailButton;
+    private JButton updateBildLikeKeywordsButton;
+    private JButton iconListEmailButton;
+    private JButton searchGadgetsByUrlButton;
+    private JButton zeilenSpaltenButton;
+    private JButton emailPasswordButton;
+    private JButton sumGefallenByURLButton;
+    private JButton ersteKommentarButton;
+    private JButton getBestRatedGadgetsButton;
+    private JButton addCommentSliderButton;
+    private JButton bildButton;
+
+
+}

db/Globals.java

@@ -0,0 +1,45 @@
+package edu.hsog.db;
+
+import org.apache.commons.dbcp2.BasicDataSource;
+import java.sql.*;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author student
+ */
+public class Globals {
+
+    static String url = "jdbc:oracle:thin:@//localhost:1521/FREE";
+    // static String url = "jdbc:mariadb://localhost:1521/chris";
+    static String username = "chris";
+    static String passwd = "xyz";
+    static String currentmail= null;
+
+    static private BasicDataSource conPool = null;
+
+    public static void initConnectionPool() {
+        if(conPool==null){
+            System.out.println("Account: " + username + ":" + passwd);
+            conPool = new BasicDataSource();
+            conPool.setDriverClassName("oracle.jdbc.driver.OracleDriver");
+            // conPool.setDriverClassName("org.mariadb.jdbc.Driver");
+            conPool.setUrl(url);
+            conPool.setUsername(username);
+            conPool.setPassword(passwd);
+            conPool.setMaxTotal(5);
+            conPool.setInitialSize(5);
+        }
+    }
+
+    public static Connection getPoolConnection() {
+        Connection v_connection = null;
+        try {
+            v_connection = conPool.getConnection();
+        } catch (SQLException ex) {
+            Logger.getLogger(Globals.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        return v_connection;
+    }
+}

db/Main.java

@@ -0,0 +1,24 @@
+package edu.hsog.db;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class Main {
+    public static void main(String[] args) throws UnsupportedLookAndFeelException, ClassNotFoundException, InstantiationException, IllegalAccessException {
+        System.out.println("Hello world!");
+        UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
+        JFrame frame = generateJFrame();
+        frame.setVisible(true);
+        Globals.initConnectionPool();  //Für Ausprobieren
+    }
+
+    public static JFrame generateJFrame() {
+        GUI gui = new GUI();
+        JFrame frame = new JFrame();
+        frame.setContentPane(gui.getMasterPanel());
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setSize(800, 600);
+        gui.getMasterPanel().setPreferredSize(new Dimension(800, 600));
+        return frame;
+    }
+}