Java RecordEnumeration.destroy方法代码示例

import javax.microedition.rms.RecordEnumeration; //导入方法依赖的package包/类
public Config(WandersmannMIDlet midlet) {
	this.midlet = midlet;
	try {
		RecordStore config = RecordStore.openRecordStore("config", true);
		
		RecordEnumeration configKeys = config.enumerateRecords(null, null, false);
		while(configKeys.hasNextElement()) {
			String kv = new String(configKeys.nextRecord());
			Vector vkv = StringTokenizer.getVector(kv, "=");
			keys.put(vkv.elementAt(0), vkv.elementAt(1));
		}
		
		configKeys.destroy();
		config.closeRecordStore();
	} catch(RecordStoreException ex) {
		midlet.getDebugDialog().addMessage("Exception", ex.getMessage());
	}
}
 

import javax.microedition.rms.RecordEnumeration; //导入方法依赖的package包/类
public boolean initialize() {
	try {
		this.rsIndex = RecordStore.openRecordStore("index", true);
		RecordEnumeration indices = rsIndex.enumerateRecords(null, null, false);
		this.keys.clear();
		
		while(indices.hasNextElement()) {
			byte[] buf = indices.nextRecord();
			Vector indexChunks = StringTokenizer.getVector(new String(buf), "=");
			keys.put(indexChunks.elementAt(0), indexChunks.elementAt(1));
		}

		indices.destroy();

		rsImages = RecordStore.openRecordStore("images", true);
	} catch(RecordStoreException ex) {
		ex.printStackTrace();
		this.isEnabled = false;
	}
	this.successor.initialize();
	return true;
}
 

import javax.microedition.rms.RecordEnumeration; //导入方法依赖的package包/类
public RMSInputStream(short key) throws IOException {
            this.key = key;
            RecordStore r = null;
            RecordEnumeration e = null;
            char letter = 'A';
            try {
                ByteArrayOutputStream os = new ByteArrayOutputStream();
                r = open("" + letter + key);
                while(r != null) {
                    e = r.enumerateRecords(null, null, false);
                    while(e.hasNextElement()) {
                        byte[] data = e.nextRecord();
                        os.write(data);
                    }
                    e.destroy();
                    r.closeRecordStore();
                    letter++;
                    r = open("" + letter + key);
                    if(letter == 'Z') {
                        letter = 'a' - ((char)1);
                    }
                }
                os.close();
                current = new ByteArrayInputStream(os.toByteArray());
            } catch (RecordStoreException ex) {
                //#ifndef RIM
                ex.printStackTrace();
                //#else
//#                 System.out.println("Exception in object store input stream constructor: " + ex);
                //#endif
                cleanup(r);
                cleanup(e);
                throw new IOException(ex.toString());
            }
        }
 

import javax.microedition.rms.RecordEnumeration; //导入方法依赖的package包/类
public RMSInputStream(short key) throws IOException {
    this.key = key;
    RecordStore r = null;
    RecordEnumeration e = null;
    char letter = 'A';
    try {
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        r = open("" + letter + key);
        while (r != null) {
            e = r.enumerateRecords(null, null, false);
            while (e.hasNextElement()) {
                byte[] data = e.nextRecord();
                os.write(data);
            }
            e.destroy();
            r.closeRecordStore();
            letter++;
            r = open("" + letter + key);
            if (letter == 'Z') {
                letter = 'a' - ((char) 1);
            }
        }
        os.close();
        current = new ByteArrayInputStream(os.toByteArray());
    } catch (RecordStoreException ex) {
        ex.printStackTrace();
        cleanup(r);
        cleanup(e);
        throw new IOException(ex.toString());
    }
}
 

import javax.microedition.rms.RecordEnumeration; //导入方法依赖的package包/类
/**
 * @inheritDoc
 */
public void init(Object m) {
    canvas = createCanvas();
    canvas.setTitle(null);
    if(!disableFullScreen) {
        canvas.setFullScreenMode(!com.codename1.ui.Display.getInstance().isNativeCommands());
    }

    // disable the flashGraphics bug on Nokia phones
    String platform = System.getProperty("microedition.platform");
    if (platform != null && platform.toUpperCase().indexOf("NOKIA") >= 0) {
        flushGraphicsBug = false;
        NOKIA = true;

        // Symbian devices should yield a bit to let the paint thread complete its work
        // problem is we can't differentiate S40 from S60...
        Display.getInstance().setTransitionYield(1);
        //nokia devices cannot use OutputStreamWriter flush when using 
        //MultipartRequest
        MultipartRequest.setCanFlushStream(false);
    } else {
        flushGraphicsBug = true;
        Display.getInstance().setTransitionYield(-1);
    }
    mid = (MIDlet)m;
    display = javax.microedition.lcdui.Display.getDisplay(mid);
    setSoftKeyCodes(mid);

    if(mid.getAppProperty("forceBackCommand") != null) {
        canvas.setCommandListener((CommandListener) canvas);
        canvas.addCommand(MIDP_BACK_COMMAND);
    }
    
    RecordEnumeration e = null;
    RecordStore r = null;
    try {
        r = RecordStore.openRecordStore("FAT", true);
        if (r.getNumRecords() > 0) {
            e = r.enumerateRecords(null, null, false);
            while (e.hasNextElement()) {
                byte[] rec = e.nextRecord();
                ByteArrayInputStream bi = new ByteArrayInputStream(rec);
                DataInputStream di = new DataInputStream(bi);
                String name = di.readUTF();
                short key = di.readShort();
                di.close();
                bi.close();
                fat.put(name, new Short(key));
                if(key >= currentKey) {
                    currentKey += key;
                }
            }
            e.destroy();
            e = null;
        }
        r.closeRecordStore();
        r = null;
    } catch (Exception ex) {
        ex.printStackTrace();
        cleanup(r);
        cleanup(e);
    }        
}