first attempt to add 'real' Navigation to yacy search results: host navigation

- after a search is started, it is analysed how many hits are in each site
- this can be done really efficient, because the navigation information is hidden in the url hash and can be computed very fast
- the search result shows a column on the right with the hosts and the hits per host
- after a click on a host the search is modified using the efficient site: - operator

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5976 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/yacysearch.html

@@ -120,17 +120,18 @@ document.getElementById("Enter").value = "search again";
 var progressbar = new Progressbar(#[results]#, document.getElementById("results"));
 </script>
 
-#(display)#
-::
-::
+#(navigation)#
 ::
 <div id="sidebar" style="float: right;">
- <h3><a href="#">Sidebar-1</a></h3>
- <p>Sidebar-1 TEXT TEXT</p>
-  <h3><a href="#">Sidebar-2</a></h3>
- <p>Sidebar-2 TEXT TEXT</p>
+ <h3><a href="#">Navigation</a></h3>
+ <h4><a href="#">Domains</a></h4>
+ <ul>
+#{domains}#
+<li>#[domain]#</li>
+#{/domains}#
+ </ul>
 </div>
-#(/display)#
+#(/navigation)#
 
 <!-- linklist begin -->
 #(resultTable)#::<table width="100%"><tr class="TableHeader"><td width="30%">Media</td><td width="70%">URL</tr>#(/resultTable)#

htroot/yacysearch.java

@@ -28,6 +28,7 @@
 // if the shell's current path is HTROOT
 
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.TreeSet;
 
@@ -47,6 +48,7 @@ import de.anomic.plasma.plasmaSwitchboard;
 import de.anomic.plasma.plasmaSwitchboardConstants;
 import de.anomic.plasma.parser.Word;
 import de.anomic.plasma.parser.Condenser;
+import de.anomic.plasma.plasmaSearchRankingProcess.hostnaventry;
 import de.anomic.server.serverCore;
 import de.anomic.server.serverDomains;
 import de.anomic.server.serverObjects;
@@ -464,7 +466,7 @@ public class yacysearch {
                 resnav.append(navurla(thispage - 1, display, theQuery, originalUrlMask));
                 resnav.append("<strong>&lt;</strong></a>&nbsp;");
                 */
-            	resnav.append(navurla(thispage - 1, display, theQuery, originalUrlMask));
+            	resnav.append(navurla(thispage - 1, display, theQuery, originalUrlMask, null));
             	resnav.append("<img src=\"env/grafics/navdl.gif\" width=\"16\" height=\"16\"></a>&nbsp;");
             }
             final int numberofpages = Math.min(10, Math.max(thispage + 2, totalcount / theQuery.displayResults()));
@@ -484,7 +486,7 @@ public class yacysearch {
                     resnav.append(i + 1);
                     resnav.append("</a>&nbsp;");
                     */
-                	resnav.append(navurla(i, display, theQuery, originalUrlMask));
+                	resnav.append(navurla(i, display, theQuery, originalUrlMask, null));
                 	resnav.append("<img src=\"env/grafics/navd");
                 	resnav.append(i + 1);
                 	resnav.append(".gif\" width=\"16\" height=\"16\"></a>&nbsp;");
@@ -498,12 +500,26 @@ public class yacysearch {
                 resnav.append(navurla(thispage + 1, display, theQuery, originalUrlMask));
                 resnav.append("<strong>&gt;</strong></a>");
                 */
-            	resnav.append(navurla(thispage + 1, display, theQuery, originalUrlMask));
+            	resnav.append(navurla(thispage + 1, display, theQuery, originalUrlMask, null));
             	resnav.append("<img src=\"env/grafics/navdr.gif\" width=\"16\" height=\"16\"></a>");
             }
             prop.put("num-results_resnav", resnav.toString());
+            
+            // compose search navigation
+            ArrayList<hostnaventry> hostNavigator = theSearch.getHostNavigator(10);
+            if (hostNavigator == null) {
+            	prop.put("navigation", 0);
+            } else {
+            	prop.put("navigation", 1);
+            	hostnaventry entry;
+            	for (int i = 0; i < hostNavigator.size(); i++) {
+            		entry = hostNavigator.get(i);
+            		prop.put("navigation_domains_" + i + "_domain", navurla(thispage, display, theQuery, originalUrlMask, "site:" + entry.host) + entry.host + " (" + entry.count + ")</a>");
+            	}
+            	prop.put("navigation_domains", hostNavigator.size());
+            }
         
-            // generate the search result lines; they will be produced by another servlet
+            // generate the search result lines; the content will be produced by another servlet
             for (int i = 0; i < theQuery.displayResults(); i++) {
                 prop.put("results_" + i + "_item", offset + i);
                 prop.put("results_" + i + "_eventID", theQuery.id(false));
@@ -573,10 +589,10 @@ public class yacysearch {
     /**
      * generates the page navigation bar
      */
-    private static String navurla(final int page, final int display, final plasmaSearchQuery theQuery, final String originalUrlMask) {
+    private static String navurla(final int page, final int display, final plasmaSearchQuery theQuery, final String originalUrlMask, String addToQuery) {
         return
         "<a href=\"yacysearch.html?display=" + display +
-        "&amp;search=" + theQuery.queryString(true) +
+        "&amp;search=" + theQuery.queryString(true) + ((addToQuery == null) ? "" : "+" + addToQuery) +
         "&amp;maximumRecords="+ theQuery.displayResults() +
         "&amp;startRecord=" + (page * theQuery.displayResults()) +
         "&amp;resource=" + ((theQuery.isLocal()) ? "local" : "global") +

source/de/anomic/plasma/plasmaSearchEvent.java

@@ -52,6 +52,7 @@ import de.anomic.kelondro.util.SortStore;
 import de.anomic.kelondro.util.Log;
 import de.anomic.plasma.parser.Word;
 import de.anomic.plasma.parser.Condenser;
+import de.anomic.plasma.plasmaSearchRankingProcess.hostnaventry;
 import de.anomic.plasma.plasmaSnippetCache.MediaSnippet;
 import de.anomic.server.serverProfiling;
 import de.anomic.yacy.yacySearch;
@@ -94,7 +95,8 @@ public final class plasmaSearchEvent {
     TreeSet<byte[]> snippetFetchWordHashes; // a set of word hashes that are used to match with the snippets
     long urlRetrievalAllTime;
     long snippetComputationAllTime;
-    ResultURLs crawlResults;
+    public ResultURLs crawlResults;
+    public ArrayList<hostnaventry> hostNavigator;
     
     @SuppressWarnings("unchecked")
     private plasmaSearchEvent(final plasmaSearchQuery query,
@@ -135,6 +137,7 @@ public final class plasmaSearchEvent {
             (query.domType == plasmaSearchQuery.SEARCHDOM_CLUSTERALL)) {
             // do a global search
             this.rankedCache = new plasmaSearchRankingProcess(wordIndex, query, max_results_preparation, 16);
+            this.hostNavigator = null;
             
             final int fetchpeers = 12;
 
@@ -171,6 +174,7 @@ public final class plasmaSearchEvent {
             // do a local search
             this.rankedCache = new plasmaSearchRankingProcess(wordIndex, query, max_results_preparation, 2);
             this.rankedCache.execQuery();
+            this.hostNavigator = rankedCache.getHostNavigator(10);
             //plasmaWordIndex.Finding finding = wordIndex.retrieveURLs(query, false, 2, ranking, process);
             
             if (generateAbstracts) {
@@ -230,6 +234,7 @@ public final class plasmaSearchEvent {
             // so following sortings together with the global results will be fast
             try {
                 rankedCache.execQuery();
+                hostNavigator = rankedCache.getHostNavigator(10);
             } catch (final Exception e) {
                 e.printStackTrace();
             }
@@ -563,51 +568,15 @@ public final class plasmaSearchEvent {
         Log.logInfo("search", "sorted out hash " + urlhash + " during search: " + reason);
     }
     
-    /*
-    public ResultEntry oneResult(final int item) {
-    	return oneResult(item, System.currentTimeMillis() + 100);
-    }
-    
-    public ResultEntry oneResult(final int item, long timeout) {
-        // check if we already retrieved this item (happens if a search pages is accessed a second time)
-        serverProfiling.update("SEARCH", new plasmaProfiling.searchEvent(query.id(true), "obtain one result entry - start", 0, 0));
-        if (this.result.sizeStore() > item) {
-            // we have the wanted result already in the result array .. return that
-            return this.result.element(item).element;
-        }
-        
-        if ((query.domType == plasmaSearchQuery.SEARCHDOM_GLOBALDHT) ||
-            (query.domType == plasmaSearchQuery.SEARCHDOM_CLUSTERALL)) {
-            // this is a search using remote search threads. Also the local search thread is started as background process
-            while (
-            	localSearchThread != null &&
-            	localSearchThread.isAlive() &&
-            	System.currentTimeMillis() < timeout) {
-                // in case that the local search takes longer than some other remote search requests, 
-                // do some sleeps to give the local process a chance to contribute
-                try {Thread.sleep(10);} catch (final InterruptedException e) {}
-            }
-            // now wait until as many remote worker threads have finished, as we want to display results
-            while (
-            	this.primarySearchThreads != null &&
-            	anyWorkerAlive() &&
-            	countWorkerFinished() <= item &&
-            	System.currentTimeMillis() < timeout &&
-                (result.size() <= item || countFinishedRemoteSearch() <= item)) {
-                try {Thread.sleep(10);} catch (final InterruptedException e) {}
-            }
-            
-        }
-        // finally wait until enough results are there produced from the snippet fetch process
-        while (anyWorkerAlive() && result.size() <= item) {
-            try {Thread.sleep(10);} catch (final InterruptedException e) {}
-        }
-        
-        // finally, if there is something, return the result
-        if (this.result.size() <= item) return null;
-        return this.result.element(item).element;
+    public ArrayList<hostnaventry> getHostNavigator(int maxentries) {
+    	if (this.hostNavigator != null) return this.hostNavigator;
+    	if (localSearchThread != null && localSearchThread.isAlive()) {
+             try {Thread.sleep(100L);} catch (final InterruptedException e) {}
+        }
+    	this.hostNavigator = rankedCache.getHostNavigator(10);
+    	if (this.hostNavigator.size() == 0) this.hostNavigator = null;
+    	return this.hostNavigator;
     }
-     */
     
     public ResultEntry oneResult(final int item) {
         // check if we already retrieved this item (happens if a search

source/de/anomic/plasma/plasmaSearchRankingProcess.java

@@ -74,6 +74,7 @@ public final class plasmaSearchRankingProcess {
     private final plasmaWordIndex wordIndex;
     private HashMap<byte[], ReferenceContainer<WordReference>>[] localSearchContainerMaps;
     private final int[] domZones;
+    private HashMap<String, hoststat> hostNavigator;
     
     public plasmaSearchRankingProcess(
             final plasmaWordIndex wordIndex,
@@ -101,6 +102,7 @@ public final class plasmaSearchRankingProcess {
         this.flagcount = new int[32];
         for (int i = 0; i < 32; i++) {this.flagcount[i] = 0;}
         this.domZones = new int[8];
+        this.hostNavigator = new HashMap<String, hoststat>();
         for (int i = 0; i < 8; i++) {this.domZones[i] = 0;}
     }
     
@@ -158,6 +160,8 @@ public final class plasmaSearchRankingProcess {
         final Iterator<WordReferenceVars> i = decodedEntries.iterator();
         WordReferenceVars iEntry;
         Long r;
+        hoststat hs;
+        String domhash;
         while (i.hasNext()) {
             iEntry = i.next();
             assert (iEntry.metadataHash().length() == index.row().primaryKeyLength);
@@ -196,13 +200,17 @@ public final class plasmaSearchRankingProcess {
             }
             
             // count domZones
-            /*
-            indexURLEntry uentry = wordIndex.loadedURL.load(iEntry.urlHash, iEntry, 0); // this eats up a lot of time!!!
-            yacyURL uurl = (uentry == null) ? null : uentry.comp().url();
-            System.out.println("DEBUG domDomain dom=" + ((uurl == null) ? "null" : uurl.getHost()) + ", zone=" + yacyURL.domDomain(iEntry.urlHash()));
-            */
             this.domZones[yacyURL.domDomain(iEntry.metadataHash())]++;
             
+            // get statistics for host navigator
+            domhash = iEntry.urlHash.substring(6);
+            hs = this.hostNavigator.get(domhash);
+            if (hs == null) {
+            	this.hostNavigator.put(domhash, new hoststat(iEntry.urlHash));
+            } else {
+            	hs.inc();
+            }
+            
             // insert
             if ((maxentries < 0) || (stack.size() < maxentries)) {
                 // in case that we don't have enough yet, accept any new entry
@@ -225,6 +233,51 @@ public final class plasmaSearchRankingProcess {
         //if ((query.neededResults() > 0) && (container.size() > query.neededResults())) remove(true, true);
         serverProfiling.update("SEARCH", new plasmaProfiling.searchEvent(query.id(true), plasmaSearchEvent.PRESORT, index.size(), System.currentTimeMillis() - timer), false);
     }
+    
+    public class hoststat {
+    	public int count;
+    	public String hashsample;
+    	public hoststat(String urlhash) {
+    		this.count = 1;
+    		this.hashsample = urlhash;
+    	}
+    	public void inc() {
+    		this.count++;
+    	}
+    }
+    
+    public class hostnaventry {
+    	public int count;
+    	public String host;
+    	public hostnaventry(String host, int count) {
+    		this.host = host;
+    		this.count = count;
+    	}
+    }
+    
+    public ArrayList<hostnaventry> getHostNavigator(int maxentries) {
+    	ScoreCluster<String> score = new ScoreCluster<String>();
+    	for (Map.Entry<String, hoststat> hsentry: this.hostNavigator.entrySet()) {
+    		score.addScore(hsentry.getKey(), hsentry.getValue().count);
+    	}
+    	int rc = Math.min(maxentries, score.size());
+    	ArrayList<hostnaventry> result = new ArrayList<hostnaventry>();
+    	String hosthash;
+    	hoststat hs;
+    	URLMetadataRow mr;
+    	yacyURL url;
+    	for (int i = 0; i < rc; i++) {
+    		hosthash = score.getMaxObject();
+    		hs = this.hostNavigator.get(hosthash);
+    		mr = wordIndex.metadata().load(hs.hashsample, null, 0);
+    		if (mr == null) continue;
+    		url = mr.metadata().url();
+    		if (url == null) continue;
+    		result.add(new hostnaventry(url.getHost(), score.getScore(hosthash)));
+    		score.deleteScore(hosthash);
+    	}
+    	return result;
+    }
 
     private boolean testFlags(final WordReference ientry) {
         if (query.constraint == null) return true;

source/de/anomic/yacy/yacySearch.java

@@ -21,25 +21,6 @@
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-//
-// Using this software in any meaning (reading, learning, copying, compiling,
-// running) means that you agree that the Author(s) is (are) not responsible
-// for cost, loss of data or any harm that may be caused directly or indirectly
-// by usage of this softare or this documentation. The usage of this software
-// is on your own risk. The installation and usage (starting/running) of this
-// software may allow other people or application to access your computer and
-// any attached devices and is highly dependent on the configuration of the
-// software which must be done by the user of the software; the author(s) is
-// (are) also not responsible for proper configuration and usage of the
-// software, even if provoked by documentation provided together with
-// the software.
-//
-// Any changes to this file according to the GPL as documented in the file
-// gpl.txt aside this file in the shipment you received can be done to the
-// lines that follows this copyright notice here, but changes must not be
-// done inside the copyright notice above. A re-distribution must contain
-// the intact and unchanged copyright notice.
-// Contributions and changes to the program code must be marked as such.
 
 package de.anomic.yacy;