- better date ranking

- more protection against NPE and time travel effects

htroot/yacysearch.java

@@ -364,11 +364,13 @@ public class yacysearch {
 
             if ( querystring.indexOf("/near", 0) >= 0 ) {
                 querystring = querystring.replace("/near", "");
+                ranking.allZero(); // switch off all attributes
                 ranking.coeff_worddistance = RankingProfile.COEFF_MAX;
                 modifier.append("/near ");
             }
             if ( querystring.indexOf("/date", 0) >= 0 ) {
                 querystring = querystring.replace("/date", "");
+                ranking.allZero(); // switch off all attributes
                 ranking.coeff_date = RankingProfile.COEFF_MAX;
                 modifier.append("/date ");
             }

source/net/yacy/document/content/DCEntry.java

@@ -102,7 +102,9 @@ public class DCEntry extends TreeMap<String, String> {
         if (d == null) return null;
         if (d.isEmpty()) return null;
         try {
-            return ISO8601Formatter.FORMATTER.parse(d);
+            Date x = ISO8601Formatter.FORMATTER.parse(d);
+            Date now = new Date();
+            return x.after(now) ? now : x;
         } catch (ParseException e) {
             Log.logException(e);
             return new Date();

source/net/yacy/kelondro/data/meta/URIMetadataNode.java

@@ -130,7 +130,7 @@ public class URIMetadataNode implements URIMetadata {
         Date x = (Date) this.doc.getFieldValue(field.name());
         if (x == null) return new Date(0);
         Date now = new Date();
-        return (x.after(now)) ? now : x;
+        return x.after(now) ? now : x;
     }
 
     private String getString(YaCySchema field) {

source/net/yacy/peers/Protocol.java

@@ -1063,12 +1063,8 @@ public final class Protocol
             final List<ReferenceContainer<WordReference>> container = new ArrayList<ReferenceContainer<WordReference>>(wordhashes.size());
             for (byte[] hash: wordhashes) {
                 try {
-                    container.add(ReferenceContainer.emptyContainer(
-                                Segment.wordReferenceFactory,
-                                hash,
-                                count));
-                } catch (SpaceExceededException e) {
-                } // throws SpaceExceededException
+                    container.add(ReferenceContainer.emptyContainer(Segment.wordReferenceFactory, hash, count));
+                } catch (SpaceExceededException e) {} // throws SpaceExceededException
             }
 
         	int term = count;
@@ -1090,11 +1086,10 @@ public final class Protocol
                             Network.log.logInfo("remote search (solr): filtered blacklisted url " + urlEntry.url() + " from " + (target == null ? "shard" : ("peer " + target.hash + ":" + target.getName())));
                         }
                     }
-                    continue; // block with backlist
+                    continue; // block with blacklist
                 }
 
-                final String urlRejectReason =
-                    Switchboard.getSwitchboard().crawlStacker.urlInAcceptedDomain(urlEntry.url());
+                final String urlRejectReason = Switchboard.getSwitchboard().crawlStacker.urlInAcceptedDomain(urlEntry.url());
                 if ( urlRejectReason != null ) {
                     if ( Network.log.isInfo() ) {
                         if (localsearch) {

source/net/yacy/search/index/SolrConfiguration.java

@@ -175,12 +175,14 @@ public class SolrConfiguration extends ConfigurationSet implements Serializable
 
     public Date getDate(SolrInputDocument doc, final YaCySchema key) {
         Date x = (Date) doc.getFieldValue(key.name());
-        return (x == null) ? new Date(0) : x;
+        Date now = new Date();
+        return (x == null) ? new Date(0) : x.after(now) ? now : x;
     }
 
     public Date getDate(SolrDocument doc, final YaCySchema key) {
-        Date x = (Date) doc.getFieldValue(key.name());
-        return (x == null) ? new Date(0) : x;
+        Date x = doc == null ? null : (Date) doc.getFieldValue(key.name());
+        Date now = new Date();
+        return (x == null) ? new Date(0) : x.after(now) ? now : x;
     }
 
     /**

source/net/yacy/search/ranking/RankingProfile.java

@@ -195,6 +195,46 @@ public class RankingProfile {
         return (coeff.get(attr)).intValue();
     }
 
+    /**
+     * set all ranking attributes to zero
+     * This is usually used when a specific value is set to maximum
+     */
+    public void allZero() {
+        this.coeff_domlength          = 0;
+        this.coeff_ybr                = 0;
+        this.coeff_date               = 0;
+        this.coeff_wordsintitle       = 0;
+        this.coeff_wordsintext        = 0;
+        this.coeff_phrasesintext      = 0;
+        this.coeff_llocal             = 0;
+        this.coeff_lother             = 0;
+        this.coeff_urllength          = 0;
+        this.coeff_urlcomps           = 0;
+        this.coeff_hitcount           = 0;
+        this.coeff_posintext          = 0;
+        this.coeff_posofphrase        = 0;
+        this.coeff_posinphrase        = 0;
+        this.coeff_authority          = 0;
+        this.coeff_worddistance       = 0;
+        this.coeff_appurl             = 0;
+        this.coeff_app_dc_title       = 0;
+        this.coeff_app_dc_creator     = 0;
+        this.coeff_app_dc_subject     = 0;
+        this.coeff_app_dc_description = 0;
+        this.coeff_appemph            = 0;
+        this.coeff_catindexof         = 0;
+        this.coeff_cathasimage        = 0;
+        this.coeff_cathasaudio        = 0;
+        this.coeff_cathasvideo        = 0;
+        this.coeff_cathasapp          = 0;
+        this.coeff_termfrequency      = 0;
+        this.coeff_urlcompintoplist   = 0;
+        this.coeff_descrcompintoplist = 0;
+        this.coeff_prefer             = 0;
+        this.coeff_language           = 0;
+        this.coeff_citation           = 0;
+    }
+    
     private String externalStringCache = null;
     public String toExternalString() {
         if (this.externalStringCache != null) return this.externalStringCache;