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navid.sassan 2020-09-21 19:24:30 +02:00
parent 46c7740703
commit ef7f5d1d23
6 changed files with 519 additions and 519 deletions
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38
src/main/java/ch/zhaw/ads/AnyServer.java
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@ -1,20 +1,20 @@
/** /**
* AnyServer -- Praktikum Experimentierkasten -- ADS * AnyServer -- Praktikum Experimentierkasten -- ADS
* *
* @author E. Mumprecht * @author E. Mumprecht
* @version 1.0 -- Geruest fuer irgendeinen Server * @version 1.0 -- Geruest fuer irgendeinen Server
*/ */
package ch.zhaw.ads; package ch.zhaw.ads;
public class AnyServer implements CommandExecutor { public class AnyServer implements CommandExecutor {
//----- Dies implementiert das CommandExecutor Interface. //----- Dies implementiert das CommandExecutor Interface.
@Override @Override
public String execute(String command) { public String execute(String command) {
StringBuffer result = new StringBuffer(100); StringBuffer result = new StringBuffer(100);
result.append("Die Eingabe war \""); result.append("Die Eingabe war \"");
result.append(command); result.append(command);
result.append("\"\n"); result.append("\"\n");
return result.toString(); return result.toString();
} }
}//AnyServer }//AnyServer

38
src/main/java/ch/zhaw/ads/CommandExecutor.java
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@ -1,21 +1,21 @@
/** /**
* CommandExecutor -- Praktikum Experimentierkasten -- SW3 Dieses Interface muss * CommandExecutor -- Praktikum Experimentierkasten -- SW3 Dieses Interface muss
* von jedem Server implementiert werden. * von jedem Server implementiert werden.
* *
* @author E. Mumprecht * @author E. Mumprecht
* @version 1.0 -- Geruest fuer irgendeinen Server * @version 1.0 -- Geruest fuer irgendeinen Server
* @version 1.1 -- K. Rege Fehlerueckgabe hinzugefuegt * @version 1.1 -- K. Rege Fehlerueckgabe hinzugefuegt
*/ */
package ch.zhaw.ads; package ch.zhaw.ads;
public interface CommandExecutor { public interface CommandExecutor {
/** /**
* execute -- nimmt eine Kommandozeile, tut irgendetwas gescheites, und * execute -- nimmt eine Kommandozeile, tut irgendetwas gescheites, und
* berichtet das Resultat. * berichtet das Resultat.
* *
* @param command Kommandozeile * @param command Kommandozeile
* @return Resultat, ueblicherweise eine oder mehrere Zeilen. * @return Resultat, ueblicherweise eine oder mehrere Zeilen.
*/ */
String execute(String command) throws Exception; String execute(String command) throws Exception;
}//interface CommandExecutor }//interface CommandExecutor

34
src/main/java/ch/zhaw/ads/ExBox.java
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@ -1,18 +1,18 @@
/** /**
* @author K. Rege * @author K. Rege
* @version 1.0 -- Experimentierkasten * @version 1.0 -- Experimentierkasten
*/ */
package ch.zhaw.ads; package ch.zhaw.ads;
import java.awt.*; import java.awt.*;
import java.io.*; import java.io.*;
import java.awt.event.*; import java.awt.event.*;
public class ExBox { public class ExBox {
public static void main(String[] args) throws Exception { public static void main(String[] args) throws Exception {
ExBoxFrame f = new ExBoxFrame(); ExBoxFrame f = new ExBoxFrame();
f.setLocationRelativeTo(null); f.setLocationRelativeTo(null);
f.setVisible(true); f.setVisible(true);
} }
} }

624
src/main/java/ch/zhaw/ads/ExBoxFrame.java
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@ -1,314 +1,314 @@
/** /**
* @(#)ExBoxFrame.java * @(#)ExBoxFrame.java
* *
* JFC ExBox application * JFC ExBox application
* *
* @author K.Rege * @author K.Rege
* @version 1.00 2014/2/3 * @version 1.00 2014/2/3
* @version 1.01 2016/8/2 * @version 1.01 2016/8/2
* @version 2.00 2017/8/30 Test * @version 2.00 2017/8/30 Test
* @version 2.01 2018/2/5 AutoScale * @version 2.01 2018/2/5 AutoScale
* @version 2d.02 2018/2/5 Reconnect (inspired by S. Kunz) * @version 2d.02 2018/2/5 Reconnect (inspired by S. Kunz)
*/ */
package ch.zhaw.ads; package ch.zhaw.ads;
import java.awt.*; import java.awt.*;
import java.awt.event.*; import java.awt.event.*;
import javax.swing.*; import javax.swing.*;
import java.io.*; import java.io.*;
import java.util.*; import java.util.*;
import org.junit.runner.JUnitCore; import org.junit.runner.JUnitCore;
import org.junit.runner.Result; import org.junit.runner.Result;
import org.junit.runner.notification.Failure; import org.junit.runner.notification.Failure;
import org.junit.runner.notification.RunListener; import org.junit.runner.notification.RunListener;
import org.junit.runner.Description; import org.junit.runner.Description;
public class ExBoxFrame extends JFrame implements ActionListener, ItemListener { public class ExBoxFrame extends JFrame implements ActionListener, ItemListener {
private static double SCALE = 1; private static double SCALE = 1;
private JMenuItem connect, open, test, textView, graphicView; private JMenuItem connect, open, test, textView, graphicView;
private JButton enter; private JButton enter;
private JTextField arguments; private JTextField arguments;
private JCheckBox reconnect; private JCheckBox reconnect;
private JComboBox history; private JComboBox history;
private JTextArea output; private JTextArea output;
private JScrollPane scrollPane; private JScrollPane scrollPane;
private CommandExecutor command; private CommandExecutor command;
private boolean graphicOn; private boolean graphicOn;
private GraphicPanel graphic; private GraphicPanel graphic;
private String lastServer; private String lastServer;
public static void setFontSize(int size) { public static void setFontSize(int size) {
Set<Object> keySet = UIManager.getLookAndFeelDefaults().keySet(); Set<Object> keySet = UIManager.getLookAndFeelDefaults().keySet();
Object[] keys = keySet.toArray(new Object[keySet.size()]); Object[] keys = keySet.toArray(new Object[keySet.size()]);
for (Object key : keys) { for (Object key : keys) {
if (key != null && key.toString().toLowerCase().contains("font")) { if (key != null && key.toString().toLowerCase().contains("font")) {
Font font = UIManager.getDefaults().getFont(key); Font font = UIManager.getDefaults().getFont(key);
if (font != null) { if (font != null) {
font = font.deriveFont((float) size); font = font.deriveFont((float) size);
UIManager.put(key, font); UIManager.put(key, font);
} }
} }
} }
} }
private void initMenu() { private void initMenu() {
JMenuBar menuBar = new JMenuBar(); JMenuBar menuBar = new JMenuBar();
JMenu menuFile = new JMenu(); JMenu menuFile = new JMenu();
JMenuItem menuFileExit = new JMenuItem(); JMenuItem menuFileExit = new JMenuItem();
menuFile.setText("File"); menuFile.setText("File");
menuFileExit.setText("Exit"); menuFileExit.setText("Exit");
// Add action listener.for the menu button // Add action listener.for the menu button
menuFileExit.addActionListener(new ActionListener() { menuFileExit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { public void actionPerformed(ActionEvent e) {
ExBoxFrame.this.windowClosed(); ExBoxFrame.this.windowClosed();
} }
}); });
menuFile.add(menuFileExit); menuFile.add(menuFileExit);
menuBar.add(menuFile); menuBar.add(menuFile);
JMenu menuServer = new JMenu("Server"); JMenu menuServer = new JMenu("Server");
menuBar.add(menuServer); menuBar.add(menuServer);
connect = new JMenuItem("Connect"); connect = new JMenuItem("Connect");
connect.addActionListener(this); connect.addActionListener(this);
menuServer.add(connect); menuServer.add(connect);
test = new JMenuItem("Test"); test = new JMenuItem("Test");
test.addActionListener(this); test.addActionListener(this);
menuServer.add(test); menuServer.add(test);
JMenu menuView = new JMenu("View"); JMenu menuView = new JMenu("View");
menuBar.add(menuView); menuBar.add(menuView);
textView = new JMenuItem("Text"); textView = new JMenuItem("Text");
textView.addActionListener(this); textView.addActionListener(this);
menuView.add(textView); menuView.add(textView);
graphicView = new JMenuItem("Graphic"); graphicView = new JMenuItem("Graphic");
graphicView.addActionListener(this); graphicView.addActionListener(this);
menuView.add(graphicView); menuView.add(graphicView);
open = new JMenuItem("Open..."); open = new JMenuItem("Open...");
open.addActionListener(this); open.addActionListener(this);
menuFile.insert(open, 0); menuFile.insert(open, 0);
setJMenuBar(menuBar); setJMenuBar(menuBar);
} }
private void initComponents() { private void initComponents() {
setLayout(new BorderLayout()); setLayout(new BorderLayout());
output = new JTextArea(); output = new JTextArea();
scrollPane = new JScrollPane(output); scrollPane = new JScrollPane(output);
add(BorderLayout.CENTER, scrollPane); add(BorderLayout.CENTER, scrollPane);
Panel panel = new Panel(new BorderLayout()); Panel panel = new Panel(new BorderLayout());
arguments = new JTextField(); arguments = new JTextField();
arguments.addActionListener(this); arguments.addActionListener(this);
panel.add(BorderLayout.CENTER, arguments); panel.add(BorderLayout.CENTER, arguments);
enter = new JButton("enter"); enter = new JButton("enter");
enter.addActionListener(this); enter.addActionListener(this);
panel.add(BorderLayout.EAST, enter); panel.add(BorderLayout.EAST, enter);
reconnect = new JCheckBox("reconnect",true); reconnect = new JCheckBox("reconnect",true);
panel.add(BorderLayout.WEST,reconnect); panel.add(BorderLayout.WEST,reconnect);
history = new JComboBox(); history = new JComboBox();
history.addItemListener(this); history.addItemListener(this);
panel.add(BorderLayout.SOUTH, history); panel.add(BorderLayout.SOUTH, history);
add(BorderLayout.SOUTH, panel); add(BorderLayout.SOUTH, panel);
} }
/** /**
* get default path for file open dialog * get default path for file open dialog
*/ */
String getPathCompiled() { String getPathCompiled() {
String pathtocompiled = getClass().getProtectionDomain().getCodeSource().getLocation().getPath(); String pathtocompiled = getClass().getProtectionDomain().getCodeSource().getLocation().getPath();
pathtocompiled = pathtocompiled.replace("%20", " ").replace("/", pathtocompiled = pathtocompiled.replace("%20", " ").replace("/",
File.separator); File.separator);
pathtocompiled += getClass().getPackage().getName().replace(".", pathtocompiled += getClass().getPackage().getName().replace(".",
File.separator); File.separator);
if (System.getProperty("os.name").toLowerCase().indexOf("win") >= 0) { if (System.getProperty("os.name").toLowerCase().indexOf("win") >= 0) {
pathtocompiled = pathtocompiled.substring(1); pathtocompiled = pathtocompiled.substring(1);
} }
return pathtocompiled; return pathtocompiled;
} }
/** /**
* The constructor * The constructor
*/ */
public ExBoxFrame() throws Exception { public ExBoxFrame() throws Exception {
try { try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) { } catch (Exception ex) {
ex.printStackTrace(); ex.printStackTrace();
} }
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
if (screenSize.getWidth() > 1920) { if (screenSize.getWidth() > 1920) {
SCALE = 2; SCALE = 2;
} }
setFontSize((int) (11 * SCALE)); setFontSize((int) (11 * SCALE));
setSize(new Dimension((int) (400 * SCALE), (int) (400 * SCALE))); setSize(new Dimension((int) (400 * SCALE), (int) (400 * SCALE)));
setTitle("ExBox"); setTitle("ExBox");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
initMenu(); initMenu();
initComponents(); initComponents();
} }
private void error(String s) { private void error(String s) {
output.append("\nERROR:" + s + "\n"); output.append("\nERROR:" + s + "\n");
} }
private void interpret(String args) throws Exception { private void interpret(String args) throws Exception {
if (reconnect.isSelected() && lastServer != null) { if (reconnect.isSelected() && lastServer != null) {
command = ServerFactory.createServer(lastServer); command = ServerFactory.createServer(lastServer);
} }
if (!arguments.getText().equals(history.getItemAt(0)) if (!arguments.getText().equals(history.getItemAt(0))
&& !arguments.getText().equals(history.getSelectedItem())) { && !arguments.getText().equals(history.getSelectedItem())) {
history.insertItemAt(arguments.getText(), 0); history.insertItemAt(arguments.getText(), 0);
} }
if (command == null) { if (command == null) {
error("no Server connected"); error("no Server connected");
} else { } else {
String res = command.execute(args); String res = command.execute(args);
if (graphicOn) { if (graphicOn) {
graphic.setFigure(res); graphic.setFigure(res);
} else { } else {
output.append(res); output.append(res);
} }
} }
} }
private void setGraphicView() { private void setGraphicView() {
if (graphicOn) { if (graphicOn) {
return; return;
} }
remove(scrollPane); remove(scrollPane);
graphic = new GraphicPanel(); graphic = new GraphicPanel();
output.removeNotify(); output.removeNotify();
add(BorderLayout.CENTER, graphic); add(BorderLayout.CENTER, graphic);
graphicOn = true; graphicOn = true;
validate(); validate();
repaint(); repaint();
} }
private void setTextView() { private void setTextView() {
if (!graphicOn) { if (!graphicOn) {
return; return;
} }
remove(graphic); remove(graphic);
add(BorderLayout.CENTER, scrollPane); add(BorderLayout.CENTER, scrollPane);
graphicOn = false; graphicOn = false;
validate(); validate();
repaint(); repaint();
} }
private String openFileDialog(String startDirectory, String pattern) { private String openFileDialog(String startDirectory, String pattern) {
FileDialog fd = new FileDialog(this, "Open"); FileDialog fd = new FileDialog(this, "Open");
if (pattern != null) { if (pattern != null) {
fd.setFile(pattern); fd.setFile(pattern);
} }
if (startDirectory != null) { if (startDirectory != null) {
fd.setDirectory(startDirectory); fd.setDirectory(startDirectory);
} }
fd.setVisible(true); fd.setVisible(true);
return fd.getDirectory() + fd.getFile(); return fd.getDirectory() + fd.getFile();
} }
private void testCommand() throws Exception { private void testCommand() throws Exception {
final java.util.List<String> failed = new LinkedList<String>(); final java.util.List<String> failed = new LinkedList<String>();
final java.util.List<String> finished = new LinkedList<String>(); final java.util.List<String> finished = new LinkedList<String>();
JUnitCore runner = new JUnitCore(); JUnitCore runner = new JUnitCore();
String name = openFileDialog(getPathCompiled(), "*Test.class"); String name = openFileDialog(getPathCompiled(), "*Test.class");
runner.addListener(new RunListener() { runner.addListener(new RunListener() {
@Override @Override
public void testFinished(Description description) throws Exception { public void testFinished(Description description) throws Exception {
finished.add(description.getDisplayName()); finished.add(description.getDisplayName());
} }
@Override @Override
public void testFailure(Failure failure) throws Exception { public void testFailure(Failure failure) throws Exception {
failed.add(failure.getDescription().getDisplayName()); failed.add(failure.getDescription().getDisplayName());
} }
}); });
Class testClass = ServerFactory.loadClass(name); Class testClass = ServerFactory.loadClass(name);
Result result = runner.run(testClass); Result result = runner.run(testClass);
for (String test : finished) { for (String test : finished) {
if (!failed.contains(test)) { if (!failed.contains(test)) {
output.append(test + ": OK\n"); output.append(test + ": OK\n");
} }
} }
for (Failure failure : result.getFailures()) { for (Failure failure : result.getFailures()) {
output.append(failure.toString() + " ERROR\n"); output.append(failure.toString() + " ERROR\n");
} }
output.append( output.append(
"TESTS PASSED: " "TESTS PASSED: "
+ (result.wasSuccessful() + (result.wasSuccessful()
? "OK \u263a" ? "OK \u263a"
: result.getFailures().size() + " ERRORS") : result.getFailures().size() + " ERRORS")
+ "\n"); + "\n");
} }
private void connectCommand() throws Exception { private void connectCommand() throws Exception {
String name = openFileDialog(getPathCompiled(), "*Server.class"); String name = openFileDialog(getPathCompiled(), "*Server.class");
command = ServerFactory.createServer(name); command = ServerFactory.createServer(name);
lastServer = name; lastServer = name;
String fullClassName = command.getClass().getName(); String fullClassName = command.getClass().getName();
String simpleClassName = fullClassName.substring( String simpleClassName = fullClassName.substring(
fullClassName.lastIndexOf('.') + 1); fullClassName.lastIndexOf('.') + 1);
setTitle("ExBox connected to " + simpleClassName); setTitle("ExBox connected to " + simpleClassName);
} }
private void openFile() throws Exception { private void openFile() throws Exception {
String name = openFileDialog(null, null); String name = openFileDialog(null, null);
BufferedReader br = new BufferedReader( BufferedReader br = new BufferedReader(
new InputStreamReader(new FileInputStream(name), "ISO-8859-1")); new InputStreamReader(new FileInputStream(name), "ISO-8859-1"));
StringBuffer b = new StringBuffer(); StringBuffer b = new StringBuffer();
String line; String line;
while ((line = br.readLine()) != null) { while ((line = br.readLine()) != null) {
b.append(line); b.append(line);
b.append('\n'); b.append('\n');
} }
interpret(b.toString()); interpret(b.toString());
} }
public void itemStateChanged(ItemEvent e) { public void itemStateChanged(ItemEvent e) {
try { try {
arguments.setText((String) e.getItem()); arguments.setText((String) e.getItem());
interpret(arguments.getText()); interpret(arguments.getText());
} catch (Throwable ex) { } catch (Throwable ex) {
error(ex.toString()); error(ex.toString());
} }
} }
public void actionPerformed(ActionEvent e) { public void actionPerformed(ActionEvent e) {
try { try {
if ((e.getSource() == arguments) || (e.getSource() == enter)) { if ((e.getSource() == arguments) || (e.getSource() == enter)) {
interpret(arguments.getText()); interpret(arguments.getText());
} else if (e.getSource() == connect) { } else if (e.getSource() == connect) {
connectCommand(); connectCommand();
} else if (e.getSource() == test) { } else if (e.getSource() == test) {
testCommand(); testCommand();
} else if (e.getSource() == open) { } else if (e.getSource() == open) {
openFile(); openFile();
} else if (e.getSource() == textView) { } else if (e.getSource() == textView) {
setTextView(); setTextView();
} else if (e.getSource() == graphicView) { } else if (e.getSource() == graphicView) {
setGraphicView(); setGraphicView();
} }
} catch (Throwable ex) { } catch (Throwable ex) {
ex.printStackTrace(); ex.printStackTrace();
error(ex.toString()); error(ex.toString());
} }
} }
/** /**
* Shutdown procedure when run as an application. * Shutdown procedure when run as an application.
*/ */
protected void windowClosed() { protected void windowClosed() {
System.exit(0); System.exit(0);
} }
} }

172
src/main/java/ch/zhaw/ads/GraphicPanel.java
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@ -1,88 +1,88 @@
package ch.zhaw.ads; package ch.zhaw.ads;
import javax.swing.*; import javax.swing.*;
import java.awt.event.*; import java.awt.event.*;
import java.awt.*; import java.awt.*;
import java.util.*; import java.util.*;
public class GraphicPanel extends JPanel { public class GraphicPanel extends JPanel {
String figure; String figure;
public void setFigure(String figure) { public void setFigure(String figure) {
this.figure = figure; this.figure = figure;
paint(getGraphics()); paint(getGraphics());
} }
private void drawRect(Graphics g, double x, double y, double width, double height, String style) { private void drawRect(Graphics g, double x, double y, double width, double height, String style) {
int w = getWidth(); int w = getWidth();
int h = getHeight(); int h = getHeight();
int ix0 = (int) (w * x); int ix0 = (int) (w * x);
int iy0 = (int) (h * y); int iy0 = (int) (h * y);
int ix1 = (int) (w * (x + width)); int ix1 = (int) (w * (x + width));
int iy1 = (int) (h * (y + height)); int iy1 = (int) (h * (y + height));
if (style.equals("draw")) { if (style.equals("draw")) {
g.drawRect(ix0, h - iy1, ix1 - ix0, iy1 - iy0); g.drawRect(ix0, h - iy1, ix1 - ix0, iy1 - iy0);
} else { } else {
g.fillRect(ix0, h - iy1, ix1 - ix0, iy1 - iy0); g.fillRect(ix0, h - iy1, ix1 - ix0, iy1 - iy0);
} }
} }
private void drawFigure(Graphics g) { private void drawFigure(Graphics g) {
if (figure != null) { if (figure != null) {
int w = getWidth(); int w = getWidth();
int h = getHeight(); int h = getHeight();
g.setColor(Color.black); g.setColor(Color.black);
StringTokenizer tok = new StringTokenizer(figure, " <>=/,\"\n"); StringTokenizer tok = new StringTokenizer(figure, " <>=/,\"\n");
while (tok.hasMoreTokens()) { while (tok.hasMoreTokens()) {
String fig = tok.nextToken(); String fig = tok.nextToken();
if (fig.equals("line")) { if (fig.equals("line")) {
tok.nextToken(); tok.nextToken();
double x1 = Double.parseDouble(tok.nextToken()); double x1 = Double.parseDouble(tok.nextToken());
tok.nextToken(); tok.nextToken();
double y1 = Double.parseDouble(tok.nextToken()); double y1 = Double.parseDouble(tok.nextToken());
tok.nextToken(); tok.nextToken();
double x2 = Double.parseDouble(tok.nextToken()); double x2 = Double.parseDouble(tok.nextToken());
tok.nextToken(); tok.nextToken();
double y2 = Double.parseDouble(tok.nextToken()); double y2 = Double.parseDouble(tok.nextToken());
g.drawLine((int) (x1 * w), h - (int) (y1 * h), g.drawLine((int) (x1 * w), h - (int) (y1 * h),
(int) (x2 * w), h - (int) (y2 * h)); (int) (x2 * w), h - (int) (y2 * h));
} else if (fig.equals("rect")) { } else if (fig.equals("rect")) {
tok.nextToken(); tok.nextToken();
double x = Double.parseDouble(tok.nextToken()); double x = Double.parseDouble(tok.nextToken());
tok.nextToken(); tok.nextToken();
double y = Double.parseDouble(tok.nextToken()); double y = Double.parseDouble(tok.nextToken());
tok.nextToken(); tok.nextToken();
double width = Double.parseDouble(tok.nextToken()); double width = Double.parseDouble(tok.nextToken());
tok.nextToken(); tok.nextToken();
double height = Double.parseDouble(tok.nextToken()); double height = Double.parseDouble(tok.nextToken());
tok.nextToken(); tok.nextToken();
String style = tok.nextToken(); String style = tok.nextToken();
drawRect(g, x, y, width, height, style); drawRect(g, x, y, width, height, style);
} else if (fig.equals("color")) { } else if (fig.equals("color")) {
tok.nextToken(); tok.nextToken();
int red = Integer.parseInt(tok.nextToken()); int red = Integer.parseInt(tok.nextToken());
tok.nextToken(); tok.nextToken();
int green = Integer.parseInt(tok.nextToken()); int green = Integer.parseInt(tok.nextToken());
tok.nextToken(); tok.nextToken();
int blue = Integer.parseInt(tok.nextToken()); int blue = Integer.parseInt(tok.nextToken());
g.setColor(new Color(red, green, blue)); g.setColor(new Color(red, green, blue));
} }
} }
} }
} }
private void clear(Graphics g) { private void clear(Graphics g) {
int w = getWidth(); int w = getWidth();
int h = getHeight(); int h = getHeight();
g.setColor(new Color(240, 240, 240)); g.setColor(new Color(240, 240, 240));
g.fillRect(0, 0, w, h); g.fillRect(0, 0, w, h);
} }
public void paint(Graphics g) { public void paint(Graphics g) {
clear(g); clear(g);
drawFigure(g); drawFigure(g);
} }
} }

132
src/main/java/ch/zhaw/ads/ServerFactory.java
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@ -1,68 +1,68 @@
/** /**
* ServerFactory -- Praktikum Experimentierkasten -- * ServerFactory -- Praktikum Experimentierkasten --
* *
* @author K. Rege * @author K. Rege
* @version 1.0 -- Factory zur Erstellung von Server Objekten * @version 1.0 -- Factory zur Erstellung von Server Objekten
* @version 2.0 -- Dynamisches Nachladen * @version 2.0 -- Dynamisches Nachladen
*/ */
package ch.zhaw.ads; package ch.zhaw.ads;
import java.io.*; import java.io.*;
/* Classloader that handles file path of class /* Classloader that handles file path of class
*/ */
class MyClassLoader extends ClassLoader { class MyClassLoader extends ClassLoader {
private String path; private String path;
MyClassLoader(ClassLoader parent) { MyClassLoader(ClassLoader parent) {
super(parent); super(parent);
} }
private byte[] getBytes(String name) { private byte[] getBytes(String name) {
try { try {
RandomAccessFile file = new RandomAccessFile(name, "r"); RandomAccessFile file = new RandomAccessFile(name, "r");
byte data[] = new byte[(int) file.length()]; byte data[] = new byte[(int) file.length()];
file.readFully(data); file.readFully(data);
file.close(); file.close();
return data; return data;
} catch (IOException e) {} } catch (IOException e) {}
return null; return null;
} }
/** /**
* @name filename of class * @name filename of class
*/ */
public Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException { public Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
// System.out.println("load:" + name + " " + resolve); // System.out.println("load:" + name + " " + resolve);
Class<?> clazz; Class<?> clazz;
byte[] classData = getBytes(name); byte[] classData = getBytes(name);
if (classData != null) { if (classData != null) {
clazz = defineClass(classData, 0, classData.length); clazz = defineClass(classData, 0, classData.length);
path = name.substring(0, path = name.substring(0,
name.length() - clazz.getName().length() - ".class".length()); name.length() - clazz.getName().length() - ".class".length());
return clazz; return clazz;
} }
if (!resolve) { if (!resolve) {
classData = getBytes(path + name.replace(".", File.separator) + ".class"); classData = getBytes(path + name.replace(".", File.separator) + ".class");
if (classData != null) { if (classData != null) {
return defineClass(classData, 0, classData.length); return defineClass(classData, 0, classData.length);
} }
} }
return findSystemClass(name); return findSystemClass(name);
} }
} }
public class ServerFactory { public class ServerFactory {
public static Class<?> loadClass(String name) throws Exception { public static Class<?> loadClass(String name) throws Exception {
MyClassLoader myClassLoader = new MyClassLoader( MyClassLoader myClassLoader = new MyClassLoader(
MyClassLoader.class.getClassLoader()); MyClassLoader.class.getClassLoader());
Class<?> clazz = myClassLoader.loadClass(name, true); Class<?> clazz = myClassLoader.loadClass(name, true);
return clazz; return clazz;
} }
public static CommandExecutor createServer(String name) throws Exception { public static CommandExecutor createServer(String name) throws Exception {
return (CommandExecutor) loadClass(name).newInstance(); return (CommandExecutor) loadClass(name).newInstance();
} }
} }