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203 lines
9.7 KiB
203 lines
9.7 KiB
// sidebar_navigation.java
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// (C) 2008 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 03.03.2008 on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
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// $LastChangedRevision: 1986 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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import java.util.Iterator;
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import java.util.Set;
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import java.util.TreeSet;
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import de.anomic.http.httpHeader;
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import de.anomic.kelondro.kelondroMSetTools;
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import de.anomic.kelondro.kelondroNaturalOrder;
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import de.anomic.plasma.plasmaSearchEvent;
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import de.anomic.plasma.plasmaSearchQuery;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.server.serverDomains;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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public class sidebar_navigation {
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private static final int MAX_TOPWORDS = 24;
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch<?> env) {
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final serverObjects prop = new serverObjects();
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String eventID = post.get("eventID", "");
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boolean rss = post.get("rss", "false").equals("true");
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// default settings for blank item
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prop.put("navigation", "0");
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prop.put("rssreferences", "0");
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// find search event
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plasmaSearchEvent theSearch = plasmaSearchEvent.getEvent(eventID);
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if (theSearch == null) {
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// the event does not exist, show empty page
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return prop;
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}
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plasmaSearchQuery theQuery = theSearch.getQuery();
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int offset = theQuery.neededResults() - theQuery.displayResults();
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int totalcount = theSearch.getRankingResult().getLocalResourceSize() + theSearch.getRankingResult().getRemoteResourceSize();
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// attach the bottom line with search references (topwords)
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final Set<String> references = theSearch.references(20);
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if (references.size() > 0) {
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// get the topwords
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final TreeSet<String> topwords = new TreeSet<String>(kelondroNaturalOrder.naturalComparator);
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String tmp = "";
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Iterator<String> i = references.iterator();
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while (i.hasNext()) {
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tmp = i.next();
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if (tmp.matches("[a-z]+")) {
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topwords.add(tmp);
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}
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}
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// filter out the badwords
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final TreeSet<String> filteredtopwords = kelondroMSetTools.joinConstructive(topwords, plasmaSwitchboard.badwords);
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if (filteredtopwords.size() > 0) {
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kelondroMSetTools.excludeDestructive(topwords, plasmaSwitchboard.badwords);
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}
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// avoid stopwords being topwords
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if (env.getConfig("filterOutStopwordsFromTopwords", "true").equals("true")) {
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if ((plasmaSwitchboard.stopwords != null) && (plasmaSwitchboard.stopwords.size() > 0)) {
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kelondroMSetTools.excludeDestructive(topwords, plasmaSwitchboard.stopwords);
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}
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}
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if (rss) {
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String word;
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int hintcount = 0;
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final Iterator<String> iter = topwords.iterator();
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while (iter.hasNext()) {
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word = iter.next();
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if (word != null) {
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prop.putHTML("rssreferences_words_" + hintcount + "_word", word);
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}
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prop.put("rssreferences_words", hintcount);
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if (hintcount++ > MAX_TOPWORDS) {
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break;
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}
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}
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prop.put("rssreferences", "1");
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} else {
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String word;
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int hintcount = 0;
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final Iterator<String> iter = topwords.iterator();
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while (iter.hasNext()) {
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word = iter.next();
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if (/*(theQuery == null) ||*/ (theQuery.queryString == null)) break;
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if (word != null) {
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prop.putHTML("navigation_topwords_words_" + hintcount + "_word", word);
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prop.putHTML("navigation_topwords_words_" + hintcount + "_newsearch", theQuery.queryString.replace(' ', '+') + "+" + word);
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prop.put("navigation_topwords_words_" + hintcount + "_count", theQuery.displayResults());
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prop.put("navigation_topwords_words_" + hintcount + "_offset", "0");
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prop.put("navigation_topwords_words_" + hintcount + "_contentdom", theQuery.contentdom());
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prop.put("navigation_topwords_words_" + hintcount + "_resource", ((theQuery.isLocal()) ? "local" : "global"));
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prop.put("navigation_topwords_words_" + hintcount + "_zonecode", theQuery.zonecode);
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}
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hintcount++;
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if (hintcount >= MAX_TOPWORDS) break;
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}
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prop.put("navigation_topwords_words", hintcount);
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prop.put("navigation_topwords", "1");
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}
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}
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// compose language zone drill-down
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final int[] zones = theSearch.getRankingResult().zones();
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boolean z = false;
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domzone(prop, "All", theSearch.getRankingResult().size(), theQuery);
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if (zones[serverDomains.TLD_EuropeRussia_ID] > 0)
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{ z = true; domzone(prop, "EuropeRussia", zones[serverDomains.TLD_EuropeRussia_ID], theQuery);}
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if (zones[serverDomains.TLD_MiddleSouthAmerica_ID] > 0)
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{ z = true; domzone(prop, "MiddleSouthAmerica", zones[serverDomains.TLD_MiddleSouthAmerica_ID], theQuery);}
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if (zones[serverDomains.TLD_SouthEastAsia_ID] > 0)
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{ z = true; domzone(prop, "SouthEastAsia", zones[serverDomains.TLD_SouthEastAsia_ID], theQuery);}
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if (zones[serverDomains.TLD_MiddleEastWestAsia_ID] > 0)
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{ z = true; domzone(prop, "MiddleEastWestAsia_", zones[serverDomains.TLD_MiddleEastWestAsia_ID], theQuery);}
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if (zones[serverDomains.TLD_NorthAmericaOceania_ID] + zones[serverDomains.TLD_Generic_ID] > 0)
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{ z = true; domzone(prop, "NorthAmericaOceania", zones[serverDomains.TLD_NorthAmericaOceania_ID] + zones[serverDomains.TLD_Generic_ID], theQuery);}
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if (zones[serverDomains.TLD_Africa_ID] > 0)
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{ z = true; domzone(prop, "Africa", zones[serverDomains.TLD_Africa_ID], theQuery);}
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if (zones[7] > 0)
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{ z = true; domzone(prop, "Intranet", zones[7], theQuery);}
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prop.put("navigation_languagezone", (z) ? "1" : "0");
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// compose page navigation
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StringBuffer resnav = new StringBuffer();
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int thispage = offset / theQuery.displayResults();
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if (thispage == 0) resnav.append("< "); else {
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resnav.append(navurla(thispage - 1, theQuery));
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resnav.append("<strong><</strong></a> ");
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}
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int numberofpages = Math.min(10, Math.max(thispage + 2, totalcount / theQuery.displayResults()));
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for (int j = 0; j < numberofpages; j++) {
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if (j == thispage) {
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resnav.append("<strong>");
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resnav.append(j + 1);
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resnav.append("</strong> ");
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} else {
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resnav.append(navurla(j, theQuery));
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resnav.append(j + 1);
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resnav.append("</a> ");
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}
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}
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if (thispage >= numberofpages) resnav.append(">"); else {
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resnav.append(navurla(thispage + 1, theQuery));
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resnav.append("<strong>></strong></a>");
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}
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prop.put("navigation_resnav", resnav.toString());
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prop.put("navigation", "1");
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return prop;
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}
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private static String navurla(int page, plasmaSearchQuery theQuery) {
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return
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"<a href=\"ysearch.html?search=" + theQuery.queryString(true) +
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"&count="+ theQuery.displayResults() +
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"&offset=" + (page * theQuery.displayResults()) +
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"&resource=" + ((theQuery.isLocal()) ? "local" : "global") +
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"&urlmaskfilter=" + theQuery.urlMask +
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"&prefermaskfilter=" + theQuery.prefer +
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"&cat=href&constraint=" + ((theQuery.constraint == null) ? "" : theQuery.constraint.exportB64()) +
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"&contentdom=" + theQuery.contentdom() +
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"&former=" + theQuery.queryString(true) + "\">";
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}
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private static void domzone(serverObjects prop, String zonename, int zonecount, plasmaSearchQuery theQuery) {
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prop.put("navigation_languagezone_" + zonename + "_count", zonecount);
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prop.putHTML("navigation_languagezone_" + zonename + "_search", theQuery.queryString.replace(' ', '+'));
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prop.put("navigation_languagezone_" + zonename + "_offset", "0");
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prop.put("navigation_languagezone_" + zonename + "_contentdom", theQuery.contentdom());
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prop.put("navigation_languagezone_" + zonename + "_resource", ((theQuery.isLocal()) ? "local" : "global"));
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prop.put("navigation_languagezone_" + zonename, 1);
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}
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}
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