Changeset 9538 in osm for applications/viewer/jmapviewer/src/org/openstreetmap

Timestamp:

2008-08-07T15:41:48+02:00 (16 years ago)

Author:

stotz

Message:

 

File:

• applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/OsmFileCacheTileLoader.java (modified) (8 diffs)

applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/OsmFileCacheTileLoader.java

@@ -13 +13 @@
 import java.net.URL;
 import java.net.URLConnection;
-import java.util.Date;
 
 import javax.imageio.ImageIO;
 
-import org.openstreetmap.gui.jmapviewer.interfaces.Job;
 import org.openstreetmap.gui.jmapviewer.interfaces.TileCache;
 import org.openstreetmap.gui.jmapviewer.interfaces.TileLoader;
@@ -37 +35 @@
         protected String tileCacheDir;
 
-        protected long maxFileAge = 0;// FILE_AGE_ONE_DAY;//
-
-        // FILE_AGE_ONE_WEEK;
+        protected long maxFileAge = FILE_AGE_ONE_WEEK;
 
         public OsmFileCacheTileLoader(JMapViewer map, String baseUrl) {
@@ -66 +62 @@
         }
 
-        protected class FileLoadJob implements Job {
+        protected class FileLoadJob implements Runnable {
                 InputStream input = null;
 
@@ -104 +100 @@
                                                 return;
                                         }
-                                        System.out.println("Cache hit for " + tile + " but file age is high: "
-                                                        + new Date(fileAge));
+                                        // System.out.println("Cache hit for " + tile +
+                                        // " but file age is high: "
+                                        // + new Date(fileAge));
                                         map.repaint();
                                         // if (!isOsmTileNewer(tile, fileAge)) {
@@ -121 +118 @@
                                 }
                                 // Thread.sleep(500);
-                                System.out.println("Loading tile from OSM: " + tile);
+                                // System.out.println("Loading tile from OSM: " + tile);
                                 HttpURLConnection urlConn = loadTileFromOsm(tile);
-                                if (fileAge > 0)
-                                        urlConn.setIfModifiedSince(fileAge);
-
-                                if (urlConn.getResponseCode() == 304) {
-                                        System.out.println("Local version is up to date");
-                                        tile.setLoaded(true);
-                                        return;
-                                }
+                                // if (fileAge > 0)
+                                // urlConn.setIfModifiedSince(fileAge);
+                                //
+                                // if (urlConn.getResponseCode() == 304) {
+                                // System.out.println("Local version is up to date");
+                                // tile.setLoaded(true);
+                                // return;
+                                // }
                                 byte[] buffer = loadTileInBuffer(urlConn);
                                 tile.setImage(ImageIO.read(new ByteArrayInputStream(buffer)));
@@ -161 +158 @@
                 }
 
+                /**
+                 * Performs a <code>HEAD</code> request for retrieving the
+                 * <code>LastModified</code> header value.
+                 * 
+                 * Note: This does only work with servers providing the
+                 * <code>LastModified</code> header:
+                 * <ul>
+                 * <li>{@link OsmTileLoader#MAP_OSMA} - supported</li>
+                 * <li>{@link OsmTileLoader#MAP_MAPNIK} - not supported</li>
+                 * </ul>
+                 * 
+                 * @param tile
+                 * @param fileAge
+                 * @return <code>true</code> if the tile on the server is newer than the
+                 *         file
+                 * @throws IOException
+                 */
                 protected boolean isOsmTileNewer(Tile tile, long fileAge) throws IOException {
                         URL url;
@@ -167 +181 @@
                         urlConn.setRequestMethod("HEAD");
                         urlConn.setReadTimeout(30000); // 30 seconds read
-                        System.out.println("Tile age: " + new Date(urlConn.getLastModified()) + " / "
-                                        + new Date(fileAge));
+                        // System.out.println("Tile age: " + new
+                        // Date(urlConn.getLastModified()) + " / "
+                        // + new Date(fileAge));
                         long lastModified = urlConn.getLastModified();
                         if (lastModified == 0)
@@ -192 +207 @@
                         }
                 }
-
-                /**
-                 * Terminating all transfers that are currently in progress
-                 */
-                public void stop() {
-
-                        try {
-                                // if (input != null)
-                                // input.stop();
-                        } catch (Exception e) {
-                        }
-                }
-        }
-
+        }
+
+        public long getMaxFileAge() {
+                return maxFileAge;
+        }
+
+        /**
+         * Sets the maximum age of the local cached tile in the file system.
+         * 
+         * @param maxFileAge
+         *            maximum age in milliseconds
+         * @see #FILE_AGE_ONE_DAY
+         * @see #FILE_AGE_ONE_WEEK
+         */
+        public void setMaxFileAge(long maxFileAge) {
+                this.maxFileAge = maxFileAge;
+        }
+
+        public String getTileCacheDir() {
+                return tileCacheDir;
+        }
+
+        public void setTileCacheDir(String tileCacheDir) {
+                this.tileCacheDir = tileCacheDir;
+        }
+
+        
 }