- if a "/date" modifier is used, the solr remote query applies an

ordering by date (ascending)
- added also some 'anti-timetravel' protection (check if date is in the
future within any metadata date field)

source/net/yacy/cora/protocol/ResponseHeader.java

@@ -73,7 +73,8 @@ public class ResponseHeader extends HeaderFramework {
 
     public Date date() {
         final Date d = headerDate(HeaderFramework.DATE);
-        return (d == null) ? new Date() : d;
+        final Date now = new Date();
+        return (d == null) ? now : d.after(now) ? now : d;
     }
 
     public Date expires() {
@@ -82,7 +83,8 @@ public class ResponseHeader extends HeaderFramework {
 
     public Date lastModified() {
         final Date d = headerDate(LAST_MODIFIED);
-        return (d == null) ? date() : d;
+        final Date now = new Date();
+        return (d == null) ? date() : d.after(now) ? now : d;
     }
 
     public long age() {

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

@@ -129,7 +129,8 @@ public class URIMetadataNode implements URIMetadata {
         assert field.getType() == SolrType.date;
         Date x = (Date) this.doc.getFieldValue(field.name());
         if (x == null) return new Date(0);
-        return x;
+        Date now = new Date();
+        return (x.after(now)) ? now : x;
     }
 
     private String getString(YaCySchema field) {

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

@@ -174,7 +174,9 @@ public class URIMetadataRow implements URIMetadata {
     private void encodeDate(final int col, final Date d) {
         // calculates the number of days since 1.1.1970 and returns this as 4-byte array
         // 86400000 is the number of milliseconds in one day
-        this.entry.setCol(col, NaturalOrder.encodeLong(d.getTime() / 86400000L, 4));
+        long time = d.getTime();
+        long now = System.currentTimeMillis();
+        this.entry.setCol(col, NaturalOrder.encodeLong((time > now ? now : time) / 86400000L, 4));
     }
 
     private Date decodeDate(final int col) {

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

@@ -28,6 +28,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
@@ -279,7 +280,12 @@ public final class Fulltext implements Iterable<byte[]> {
         try {
         	if (this.urlIndexFile != null) this.urlIndexFile.remove(idb);
         	SolrDocument sd = this.solr.get(id);
-        	if (sd == null || this.solrScheme.getDate(sd, YaCySchema.last_modified).before(this.solrScheme.getDate(doc, YaCySchema.last_modified))) {
+        	Date now = new Date();
+        	Date sdDate = this.solrScheme.getDate(sd, YaCySchema.last_modified);
+        	if (sdDate.after(now)) sdDate = now;
+        	Date docDate = this.solrScheme.getDate(doc, YaCySchema.last_modified);
+        	if (docDate.after(now)) docDate = now;
+        	if (sd == null || sdDate.before(docDate)) {
                 if (this.solrScheme.contains(YaCySchema.ip_s)) {
                     // ip_s needs a dns lookup which causes blockings during search here
                     this.solr.add(doc);

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

@@ -198,7 +198,7 @@ public class Segment {
     }
 
     public int getQueryCount(String word) {
-        if (word == null || word.indexOf(':') >= 0 || word.indexOf(' ') >= 0) return 0;
+        if (word == null || word.indexOf(':') >= 0 || word.indexOf(' ') >= 0 || word.indexOf('/') >= 0) return 0;
         int count = this.termIndex == null ? 0 : this.termIndex.count(Word.word2hash(word));
         try {count += this.fulltext.getSolr().getQueryCount(YaCySchema.text_t.name() + ':' + word);} catch (IOException e) {}
         return count;

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

@@ -835,7 +835,9 @@ public class SolrConfiguration extends ConfigurationSet implements Serializable
     }
 
     public Date solrGetDate(final SolrDocument solr) {
-        return (Date) solr.getFieldValue(YaCySchema.last_modified.getSolrFieldName());
+        Date date = (Date) solr.getFieldValue(YaCySchema.last_modified.getSolrFieldName());
+        Date now = new Date();
+        return date.after(now) ? now : date;
     }
 
     public Collection<String> solrGetKeywords(final SolrDocument solr) {

source/net/yacy/search/query/QueryParams.java

@@ -39,6 +39,8 @@ import java.util.SortedSet;
 import java.util.regex.Pattern;
 import java.util.regex.PatternSyntaxException;
 
+import org.apache.solr.common.params.CommonParams;
+
 import net.yacy.cora.document.ASCII;
 import net.yacy.cora.document.Classification;
 import net.yacy.cora.document.Classification.ContentDomain;
@@ -481,6 +483,18 @@ public final class QueryParams {
         boosts.put(YaCySchema.keywords, 2.0f);
         boosts.put(YaCySchema.text_t, 1.0f);
     }
+    
+    /*
+  public static final String QT ="qt";
+  public static final String WT ="wt";
+  public static final String Q ="q";
+  public static final String START ="start";
+  public static final String ROWS ="rows";
+  public static final String XSL ="xsl";
+  public static final String VERSION ="version";
+  public static final String FL = "fl";
+  public static final String DF = "df";
+     */
 
     public String solrQueryString() {
         if (this.solrQueryString != null) return this.solrQueryString;
@@ -533,18 +547,24 @@ public final class QueryParams {
 
         if (this.radius > 0.0d && this.lat != 0.0d && this.lon != 0.0d) {
             // localtion search, no special ranking
-            q.append("&fq={!bbox sfield=").append(YaCySchema.coordinate_p.name()).append("}&pt=");
+            q.append('&').append(CommonParams.FQ).append("={!bbox sfield=").append(YaCySchema.coordinate_p.name()).append("}&pt=");
             q.append(Double.toString(this.lat)).append(',').append(Double.toString(this.lon)).append("&d=").append(GeoLocation.degreeToKm(this.radius));
         } else {
-            // boost fields
-            q.append("&defType=edismax&qf=");
-            int c = 0;
-            for (Map.Entry<YaCySchema, Float> boost: boosts.entrySet()) {
-                if (c++ > 0) q.append(',');
-                q.append(boost.getKey().name()).append('^').append(boost.getValue().toString());
+            // set ranking
+            if (this.ranking.coeff_date == RankingProfile.COEFF_MAX) {
+                // set a most-recent ordering
+                q.append('&').append(CommonParams.SORT).append('=').append(YaCySchema.last_modified.name()).append(" desc");
+            } else {
+                // boost fields
+                q.append("&defType=edismax&qf=");
+                int c = 0;
+                for (Map.Entry<YaCySchema, Float> boost: boosts.entrySet()) {
+                    if (c++ > 0) q.append(',');
+                    q.append(boost.getKey().name()).append('^').append(boost.getValue().toString());
+                }
             }
         }
-
+        
         // prepare result
         this.solrQueryString = q.toString();
         Log.logInfo("Protocol", "SOLR QUERY: " + this.solrQueryString);