private boolean validateServer() {
String server = serverBox.getText();
if (server.isEmpty()) {
JOptionPane.showMessageDialog(null, "Please insert server id");
return false;
}
if (Integer.parseInt(server) < 1 || Integer.parseInt(server) > mServerCount) {
JOptionPane.showMessageDialog(null, "Server is not in range");
return false;
}
return true;
}
private boolean validateKey() {
String key = keyBox.getText();
if (key.isEmpty()) {
JOptionPane.showMessageDialog(null, "Please insert key");
return false;
}
if (Integer.parseInt(key) < 1 || Integer.parseInt(key) > mServerCount * MaxSize) {
JOptionPane.showMessageDialog(null, "Key is not in range");
return false;
}
return true;
}
public void actionPerformed(ActionEvent e) {
if (JOptionPane.showConfirmDialog(
null,
"Are you sure to purge distributed hash table?",
"Purge",
JOptionPane.YES_NO_OPTION)
== JOptionPane.YES_OPTION) {
sendPurgeRequest();
}
}
public void actionPerformed(ActionEvent e) {
String action = actionGroup.getSelection().getActionCommand();
String key = keyBox.getText();
String value = valueBox.getText();
String server = serverBox.getText();
if (action == "insert") {
if (!validateKey()) {
return;
} else if (value.isEmpty()) {
JOptionPane.showMessageDialog(null, "Please insert value");
return;
}
if (!validateServer()) {
return;
}
sendInsertRequest(Integer.parseInt(key), value, Integer.parseInt(server));
} else if (action == "lookup") {
if (!validateKey()) {
return;
}
if (!validateServer()) {
return;
}
sendLookupRequest(Integer.parseInt(key), Integer.parseInt(server));
} else if (action == "delete") {
if (!validateKey()) {
return;
}
if (!validateServer()) {
return;
}
sendDeleteRequest(Integer.parseInt(key), Integer.parseInt(server));
} else if (action == "count") {
if (!validateServer()) {
return;
}
sendCountRequest(Integer.parseInt(server));
}
}