Wenn ein Benutzer gelöscht wird, wird nun vorher geprüft, ob dieser

Benutzer mit Ausleihen verknüpft ist. Ist dies der Fall, kann über einen
Auswahldialog ein Benutzer ausgewählt werden, auf den die Ausleihen
übertragen werden sollen. closes issue #2

src/de/katho/kBorrow/controller/RewriteToNewUserController.java

@@ -0,0 +1,16 @@
+package de.katho.kBorrow.controller;
+
+import de.katho.kBorrow.db.DbConnector;
+
+public class RewriteToNewUserController {
+
+	private DbConnector dbCon;
+	
+	public RewriteToNewUserController(DbConnector pDbCon){
+		dbCon = pDbCon;
+	}
+	
+	public boolean rewriteToNewUser(int pOldId, int pNewId){
+		return dbCon.rewriteToNewUser(pOldId, pNewId);		
+	}
+}

src/de/katho/kBorrow/controller/UserController.java

@@ -1,8 +1,12 @@
 package de.katho.kBorrow.controller;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 
+import de.katho.kBorrow.data.KLending;
 import de.katho.kBorrow.db.DbConnector;
+import de.katho.kBorrow.gui.RewriteToNewUserDialog;
+import de.katho.kBorrow.models.LendingTableModel;
 import de.katho.kBorrow.models.UserTableModel;
 import de.katho.kBorrow.models.UserListModel;
 
@@ -11,11 +15,13 @@ public class UserController {
 	private DbConnector dbCon;
 	private UserTableModel userTableModel;
 	private UserListModel userListModel;
+	private LendingTableModel lendingTableModel;
 	
 	public UserController(DbConnector pDbCon, HashMap<String, Object> pModels) {
 		dbCon = pDbCon;
 		userTableModel = (UserTableModel)pModels.get("usertablemodel");
 		userListModel = (UserListModel)pModels.get("userlistmodel");
+		lendingTableModel = (LendingTableModel)pModels.get("lendingtablemodel");
 	}
 
 	public int createUser(String pName, String pSurname){
@@ -38,16 +44,39 @@ public class UserController {
 		return status;
 	}
 	
-	public boolean deleteUser(int pRow){
+	public boolean deleteUser(int pRow) {
 		int id = userTableModel.getUserByRow(pRow).getId();
 		
-		if(dbCon.deleteUser(id)){
-			userTableModel.updateModel();
-			userListModel.updateModel();
-			
-			return true;
+		boolean isOccupied = false;
+		ArrayList<KLending> lendingList = lendingTableModel.getLendingList();
+		for(KLending elem : lendingList){
+			if(elem.getUserId() == id){
+				isOccupied = true;
+				break;
+			}
 		}
-		return false;
-	}
 		
+		if(isOccupied){
+			RewriteToNewUserDialog dialog = new RewriteToNewUserDialog(id, dbCon);
+			if(dialog.getResult() == 0){
+				lendingTableModel.updateModel();
+				userTableModel.updateModel();
+				userListModel.updateModel();
+				
+				return deleteUser(pRow);
+			}
+			else return false;
+				
+		}
+		else {
+			if(dbCon.deleteUser(id)){
+				userTableModel.updateModel();
+				userListModel.updateModel();
+				lendingTableModel.updateModel();
+			
+				return true;
+			}
+			return false;
+		}
+	}
 }

src/de/katho/kBorrow/db/DbConnector.java

@@ -24,4 +24,6 @@ public interface DbConnector {
 	public ArrayList<KLending> getActiveLendingList();
 	public int returnLending(int lendingId, int artId, String string);
 	public ArrayList<KLending> getLendingListForArticle(int pArtId);
+	public ArrayList<KUser> getRewriteUserList(int id);
+	public boolean rewriteToNewUser(int pOldId, int pNewId);
 }

src/de/katho/kBorrow/db/SqlConnector.java

@@ -105,4 +105,16 @@ public class SqlConnector implements DbConnector{
 		return null;
 	}
 
+	@Override
+	public ArrayList<KUser> getRewriteUserList(int id) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public boolean rewriteToNewUser(int pOldId, int pNewId) {
+		// TODO Auto-generated method stub
+		return false;
+	}
+	
 }

src/de/katho/kBorrow/db/SqliteConnector.java

@@ -206,6 +206,26 @@ public class SqliteConnector implements DbConnector {
 		}
 	}
 
+	public ArrayList<KUser> getRewriteUserList(int id) {
+		ArrayList<KUser> userArr = new ArrayList<KUser>();
+		
+		try {
+			Statement st = this.connection.createStatement();
+			String query = "SELECT id, name, surname FROM user WHERE id != "+id;
+			ResultSet rs = st.executeQuery(query);
+			
+			while (rs.next()){
+				userArr.add(new KUser(rs.getInt("id"), rs.getString("name"), rs.getString("surname")));
+			}
+			
+			return userArr;
+		} 
+		catch (SQLException e){
+			e.printStackTrace();
+			return null;
+		}
+	}
+
 	public ArrayList<KArticle> getArticleList() {
 		ArrayList<KArticle> artArr = new ArrayList<KArticle>();
 		
@@ -432,19 +452,18 @@ public class SqliteConnector implements DbConnector {
 		}
 	}
 
-	public int createNewLender(String pLName, String pLSurname, String pLSN) {
-		try{
+	public boolean rewriteToNewUser(int pOldId, int pNewId) {
+		try {
 			Statement st = connection.createStatement();
-			String query = "INSERT into lender (name, surname, student_number) "
-							+ "VALUES ('"+pLName+"', '"+pLSurname+"', '"+pLSN+"')";
+			String query = "UPDATE lending SET user_id = '"+pNewId+"' WHERE user_id = '"+pOldId+"'";
 			
 			st.executeUpdate(query);
 			
-			return 0;
+			return true;
 		}
 		catch(SQLException e){
 			e.printStackTrace();
-			return 1;
+			return false;
 		}
 	}
 
@@ -465,4 +484,20 @@ public class SqliteConnector implements DbConnector {
 		
 	}
 
+	public int createNewLender(String pLName, String pLSurname, String pLSN) {
+		try{
+			Statement st = connection.createStatement();
+			String query = "INSERT into lender (name, surname, student_number) "
+							+ "VALUES ('"+pLName+"', '"+pLSurname+"', '"+pLSN+"')";
+			
+			st.executeUpdate(query);
+			
+			return 0;
+		}
+		catch(SQLException e){
+			e.printStackTrace();
+			return 1;
+		}
+	}
+	
 }

src/de/katho/kBorrow/gui/ArticleInspectFrame.java

@@ -61,7 +61,7 @@ public class ArticleInspectFrame extends JFrame {
 				
 		lblNewLabel_1.setBounds(10, 21, 100, 20);
 		lblNewLabel_2.setBounds(10, 47, 100, 20);
-		lblArticleName.setBounds(120, 21, 100, 20);
+		lblArticleName.setBounds(120, 21, 250, 20);
 		taArticleDesc.setBounds(120, 45, 250, 78);
 		taArticleDesc.setEditable(false);
 			

src/de/katho/kBorrow/gui/RewriteToNewUserDialog.java

@@ -0,0 +1,105 @@
+package de.katho.kBorrow.gui;
+
+import java.awt.BorderLayout;
+import java.awt.FlowLayout;
+
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JPanel;
+import javax.swing.border.EmptyBorder;
+import javax.swing.JComboBox;
+
+import de.katho.kBorrow.controller.RewriteToNewUserController;
+import de.katho.kBorrow.db.DbConnector;
+import de.katho.kBorrow.models.RewriteUserModel;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import javax.swing.JLabel;
+
+public class RewriteToNewUserDialog extends JDialog implements ActionListener {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -6002073589194176368L;
+	private final JPanel contentPanel = new JPanel();
+	
+	private JButton okButton;
+	private JButton cancelButton;
+	private RewriteUserModel rwusermodel;
+	private RewriteToNewUserController rwcontroller;
+	
+	private int result = 1;
+	private int oldId;
+
+	/**
+	 * Create the dialog.
+	 */
+	public RewriteToNewUserDialog(int pOldId, DbConnector pDbCon) {
+		setTitle("Ausleihe umschreiben");
+		setModal(true);
+		setModalityType(ModalityType.APPLICATION_MODAL);
+		setResizable(false);
+		setBounds(100, 100, 229, 156);
+		setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+		JPanel contentPane = new JPanel();
+		setContentPane(contentPane);
+		contentPane.setLayout(new BorderLayout());
+		oldId = pOldId;
+		rwusermodel = new RewriteUserModel(pDbCon, oldId);
+		rwcontroller = new RewriteToNewUserController(pDbCon);
+		
+		// Content Panel
+		contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
+		contentPanel.setLayout(null);
+		
+		JComboBox<String> comboBox = new JComboBox<String>(rwusermodel);
+		comboBox.setBounds(11, 52, 200, 30);
+		
+		contentPanel.add(comboBox);
+		
+		// Button Panel
+		JPanel buttonPane = new JPanel();
+		buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
+		
+		okButton = new JButton("OK");
+		cancelButton = new JButton("Cancel");
+		okButton.addActionListener(this);
+		cancelButton.addActionListener(this);
+		
+		buttonPane.add(okButton);
+		buttonPane.add(cancelButton);
+		
+		contentPane.add(buttonPane, BorderLayout.SOUTH);
+		contentPane.add(contentPanel, BorderLayout.CENTER);
+		
+		JLabel lblBenutzerAuswhlenAuf = new JLabel("<html>Benutzer ausw\u00E4hlen, auf den <br /> Ausleihen umgeschrieben werden sollen.</html>");
+		lblBenutzerAuswhlenAuf.setBounds(11, 11, 200, 30);
+		contentPanel.add(lblBenutzerAuswhlenAuf);
+		setVisible(true);
+	}
+
+	public void actionPerformed(ActionEvent e) {
+		
+		// OK Button pressed
+		if(e.getSource() == okButton ) { 
+			int newId = rwusermodel.getIdByFullname(rwusermodel.getSelectedItem());
+			
+			if(rwcontroller.rewriteToNewUser(oldId, newId)){
+				result = 0;
+			}
+			dispose();
+		}
+		
+		// Cancel Button pressed
+		if(e.getSource() == cancelButton ) {
+			dispose();
+		}
+	}
+
+	public int getResult(){
+		return result;
+	}
+}
+

src/de/katho/kBorrow/gui/UserPanel.java

@@ -205,6 +205,10 @@ public class UserPanel extends JPanel implements ActionListener, KeyListener {
 		}
 	}
 
+	public void setStatusLabel(String pText){
+		lblUserStatus.setText(pText);
+	}
+	
 	@Override
 	public void keyPressed(KeyEvent pKeyPress) {
 		if(pKeyPress.getKeyCode() == KeyEvent.VK_ENTER) saveButtonPressed();		

src/de/katho/kBorrow/listener/UserDeleteTableButton.java

@@ -30,7 +30,9 @@ public class UserDeleteTableButton extends TableButton {
 				
 				int row = pTable.getSelectedRow();
 
-				pController.deleteUser(row);
+				if(pController.deleteUser(row)) pPanel.setStatusLabel("Benutzer erfolgreich gel<65>scht.");
+				else pPanel.setStatusLabel("Beuntzer konnte nicht gel<65>scht werden.");
+				
 				pPanel.resetModeEditUser();
 			}
 		});

src/de/katho/kBorrow/models/LendingTableModel.java

@@ -79,11 +79,10 @@ public class LendingTableModel extends AbstractTableModel {
 		}
 	}
 	
-	// Die Funktion muss differenzierter werden
-		public boolean isCellEditable(int row, int col){
-			if (col > 4) return true;
-			return false;
-		}
+	public boolean isCellEditable(int row, int col){
+		if (col > 4) return true;
+		return false;
+	}
 	
 	public void updateModel(){
 		data = dbCon.getActiveLendingList();
@@ -101,4 +100,8 @@ public class LendingTableModel extends AbstractTableModel {
 		return null;
 	}
 	
+	public ArrayList<KLending> getLendingList(){
+		return data;
+	}
+
 }

src/de/katho/kBorrow/models/RewriteUserModel.java

@@ -0,0 +1,27 @@
+package de.katho.kBorrow.models;
+
+import de.katho.kBorrow.db.DbConnector;
+
+public class RewriteUserModel extends UserListModel {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -78927566018961799L;
+	private int id;
+
+	public RewriteUserModel(DbConnector pDbCon, int pId) {
+		super(pDbCon);
+		id = pId;
+		updateModel();
+	}
+	
+	public void updateModel(){
+		data = dbCon.getRewriteUserList(id);
+		
+		if(data.size() > 0) setSelectedItem(data.get(0).getName()+" "+data.get(0).getSurname());
+		
+		fireIntervalAdded(this, 0, data.size()-1);
+	}
+
+}

src/de/katho/kBorrow/models/UserListModel.java

@@ -14,9 +14,9 @@ public class UserListModel extends AbstractListModel<String> implements ComboBox
 	 * 
 	 */
 	private static final long serialVersionUID = -8653066929273274524L;
-	private DbConnector dbCon;
-	private ArrayList<KUser> data;
-	private String selectedItem = null;
+	protected DbConnector dbCon;
+	protected ArrayList<KUser> data;
+	protected String selectedItem = null;
 	
 	public UserListModel(DbConnector pDbCon){		
 		super();