set an option for the java-internal image parser that prevents that the image is cached using the file-system in a temporary file. This should speed up image parsing during image indexing dramatically and should also cause better performance when showing the yacy banner and OSM tiles.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6772 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/Banner.java

@@ -105,6 +105,7 @@ public class Banner {
         }
 
         if (!NetworkGraph.logoIsLoaded()) {
+            ImageIO.setUseCache(false); // do not write a cache to disc; keep in RAM
             final BufferedImage logo = ImageIO.read(new File(IMAGE));
             return NetworkGraph.getBannerPicture(1000, width, height, bgcolor, textcolor, bordercolor, name, links, words, type, myppm, network, peers, nlinks, nwords, nqph, nppm, logo);
         }

source/de/anomic/yacy/graphics/OSMTile.java

@@ -99,6 +99,7 @@ public class OSMTile {
             if (entry == null) return null;
         }
         try {
+            ImageIO.setUseCache(false); // do not write a cache to disc; keep in RAM
             return ImageIO.read(new ByteArrayInputStream(tileb));
         } catch (final EOFException e) {
             return null;

source/net/yacy/document/parser/images/genericImageParser.java

@@ -207,6 +207,7 @@ public class genericImageParser extends AbstractParser implements Idiom {
                             final InputStream sourceStream) throws ParserException {
         BufferedImage image = null;
         try {
+            ImageIO.setUseCache(false); // do not write a cache to disc; keep in RAM
             image = ImageIO.read(sourceStream);
         } catch (final EOFException e) {
             Log.logException(e);