Revision 5230 trunk/libraries/libRemoteServices/src/org/gvsig/remoteClient/taskplanning/retrieving/URLRetrieveTask.java
| URLRetrieveTask.java | ||
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import java.io.InputStream; |
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import java.net.MalformedURLException; |
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import java.net.URL; |
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import java.util.Iterator; |
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import java.util.Vector; |
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import org.gvsig.remoteClient.taskplanning.IRunnableTask; |
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* @see http://today.java.net/lpt/a/212 |
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*/ |
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public class URLRetrieveTask implements IRunnableTask {
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public class Status |
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{
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public static final int NOT_STARTED = 0; |
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public static final int CONNECTING = 1; |
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public static final int RETRIEVING = 2; |
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public static final int POSTPROCESSING = 3; |
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public static final int DONE = 4; |
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public static final int INTERRUPTED = 10; |
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public static final int ERROR = 11; |
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} |
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private boolean running, cancelled; |
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private URLRequest request; |
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private RetrieveListener listener;
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private Vector listeners = new Vector();
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private RetrieveEvent event = new RetrieveEvent(); |
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InputStream is; |
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private InputStream is;
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/** |
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* |
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*/ |
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public URLRetrieveTask(URLRequest request, RetrieveListener listener) {
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this.request = request; |
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this.listener = listener;
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addRetrieveListener(listener);
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running = cancelled = false; |
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} |
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public void execute() {
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running = true; |
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event.setType(RetrieveEvent.NOT_STARTED); |
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fireEvent(); |
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cancelled = false; |
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running= true; |
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long t = System.currentTimeMillis(); |
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File f = new File(request.getFileName()+System.currentTimeMillis()); |
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while (f.exists()) {
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| ... | ... | |
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} |
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URL url; |
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try {
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event.setType(RetrieveEvent.CONNECTING); |
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fireEvent(); |
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url = request.getUrl(); |
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request.setFileName(f.getAbsolutePath()); |
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System.out.println("downloading '"+url+"' to: "+f.getAbsolutePath());
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DataOutputStream dos = new DataOutputStream( new BufferedOutputStream(new FileOutputStream(f))); |
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byte[] buffer = new byte[1024*256]; |
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fireEvent(); |
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is = url.openStream(); |
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event.setType(RetrieveEvent.TRANSFERRING); |
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fireEvent(); |
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if (!cancelled) {
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long readed = 0; |
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for (int i = is.read(buffer); !cancelled && i>0; i = is.read(buffer)){
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| ... | ... | |
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System.out.println("download cancelled ("+url+")");
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f.delete(); |
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} else {
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// Transfer complete, register it in the cache |
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// register job in the cache |
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// TODO aix? deuria d'estar al principi per a poder capturar |
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// treballs que s'estan fent per? que encara no s'han acabat |
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synchronized (this) {
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RequestManager.getInstance().addDownloadedURLRequest(request, f.getAbsolutePath()); |
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} |
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} |
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running = false; |
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if (cancelled) |
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event.setType(RetrieveEvent.REQUEST_CANCELLED); |
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else |
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event.setType(RetrieveEvent.REQUEST_FINISHED); |
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} catch (MalformedURLException e) {
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e.printStackTrace(); |
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event.setType(RetrieveEvent.REQUEST_FAILED); |
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} catch (IOException e) {
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e.printStackTrace(); |
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event.setType(RetrieveEvent.REQUEST_FAILED); |
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} |
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running = false; |
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if (cancelled) |
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event.setType(RetrieveEvent.REQUEST_CANCELLED); |
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else |
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event.setType(RetrieveEvent.REQUEST_CONCLUDED); |
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listener.retrievePerformed(event); |
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fireEvent(); |
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} |
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private void fireEvent() {
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Iterator it = listeners.iterator(); |
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while (it.hasNext()) {
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RetrieveListener listener = (RetrieveListener) it.next(); |
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listener.transferEventReceived(event); |
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} |
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} |
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public void addRetrieveListener(RetrieveListener l) {
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if (l!=null) |
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listeners.add(l); |
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} |
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public void cancel() {
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cancelled = true; |
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try {
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| ... | ... | |
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public boolean isRunning() {
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return running && !cancelled; |
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} |
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public URLRequest getRequest() {
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return request; |
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} |
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public Vector getListeners() {
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return listeners; |
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} |
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} |
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