- performance enhancements in search response time using faster query ID computation and an ID cache

- code cleanup

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7113 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/yacysearchitem.java

@@ -229,6 +229,8 @@ public class yacysearchitem {
         if (s.length() <= length) return s;
         final int p = s.lastIndexOf('.');
         if (p < 0) return s.substring(0, length - 3) + "...";
+        assert p >= 0;
+        assert length - (s.length() - p) - 3 >= 0;
         return s.substring(0, length - (s.length() - p) - 3) + "..." + s.substring(p); // TODO check oob
     }
     

source/de/anomic/search/QueryParams.java

@@ -398,11 +398,26 @@ public final class QueryParams {
         return matcher;
     }
     
+    private String idCacheAnon = null, idCache = null;
+    final static private char asterisk = '*';
     public String id(final boolean anonymized) {
-        final String asterisk = "*";
+        if (anonymized) {
+            if (idCacheAnon != null) return idCacheAnon;
+        } else {
+            if (idCache != null) return idCache;
+        }
         
         // generate a string that identifies a search so results can be re-used in a cache
-        final StringBuilder context = new StringBuilder();
+        final StringBuilder context = new StringBuilder(120);
+        if (anonymized) {
+            context.append(anonymizedQueryHashes(this.queryHashes));
+            context.append('-');
+            context.append(anonymizedQueryHashes(this.excludeHashes));
+        } else {
+            context.append(hashSet2hashString(this.queryHashes));
+            context.append('-');
+            context.append(hashSet2hashString(this.excludeHashes));
+        }
         context.append(asterisk);
         context.append(this.domType);
         context.append(asterisk);
@@ -425,14 +440,12 @@ public final class QueryParams {
         context.append(this.constraint);
         context.append(asterisk);
         context.append(this.maxDistance);
-
-        final String ret;
         if (anonymized) {
-            ret = anonymizedQueryHashes(this.queryHashes) + "-" + anonymizedQueryHashes(this.excludeHashes) + context;
+            idCacheAnon = context.toString();
         } else {
-            ret = hashSet2hashString(this.queryHashes) + "-" + hashSet2hashString(this.excludeHashes) + context;
+            idCache = context.toString();
         }
-        return ret;
+        return context.toString();
     }
     
     /**

source/de/anomic/search/ResultFetcher.java

@@ -345,7 +345,7 @@ public class ResultFetcher {
             for (MediaSnippet ms: imagemedia) {
                 images.push(ms, Long.valueOf(ms.ranking));
                 c++;
-                System.out.println("*** image " + new String(ms.href.hash()) + " images.size = " + images.size() + "/" + images.size());
+                //System.out.println("*** image " + new String(ms.href.hash()) + " images.size = " + images.size() + "/" + images.size());
             }
         }
         return c;