import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.rms.RecordEnumeration;
import javax.microedition.rms.RecordFilter;
import javax.microedition.rms.RecordStore;
public class J2MESearchExample extends MIDlet implements CommandListener {
private Display display;
private Alert alert;
private Form form = new Form("Mixed RecordEnumeration", null);
private Command exit = new Command("Exit", Command.SCREEN, 1);
private Command start = new Command("Start", Command.SCREEN, 1);
private RecordStore recordstore = null;
private RecordEnumeration recordEnumeration = null;
private Filter filter = null;
public J2MESearchExample() {
display = Display.getDisplay(this);
form.addCommand(exit);
form.addCommand(start);
form.setCommandListener(this);
}
public void startApp() {
display.setCurrent(form);
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command command, Displayable displayable) {
if (command == exit) {
destroyApp(true);
notifyDestroyed();
} else if (command == start) {
try {
recordstore = RecordStore.openRecordStore("myRecordStore", true);
String outputData[] = { "M", "B", "A" };
for (int x = 0; x < 3; x++) {
byte[] byteOutputData = outputData[x].getBytes();
recordstore.addRecord(byteOutputData, 0, byteOutputData.length);
}
filter = new Filter("Bob");
recordEnumeration = recordstore.enumerateRecords(filter, null, false);
if (recordEnumeration.numRecords() > 0) {
String string = new String(recordEnumeration.nextRecord());
alert = new Alert("Reading", string, null, AlertType.WARNING);
alert.setTimeout(Alert.FOREVER);
display.setCurrent(alert);
}
recordstore.closeRecordStore();
if (RecordStore.listRecordStores() != null) {
RecordStore.deleteRecordStore("myRecordStore");
recordEnumeration.destroy();
filter.filterClose();
}
} catch (Exception error) {
alert = new Alert("Error Removing", error.toString(), null, AlertType.WARNING);
alert.setTimeout(Alert.FOREVER);
display.setCurrent(alert);
}
}
}
}
class Filter implements RecordFilter {
private String search = null;
private ByteArrayInputStream inputstream = null;
private DataInputStream datainputstream = null;
public Filter(String search) {
this.search = search.toLowerCase();
}
public boolean matches(byte[] suspect) {
String string = new String(suspect).toLowerCase();
if (string != null && string.indexOf(search) != -1)
return true;
else
return false;
}
public void filterClose() {
try {
if (inputstream != null) {
inputstream.close();
}
if (datainputstream != null) {
datainputstream.close();
}
} catch (Exception error) {
}
}
}