mirror of
https://github.com/yacy/yacy_search_server.git
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3aa69dab94
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4813 6c8d7289-2bf4-0310-a012-ef5d649a1542
349 lines
18 KiB
Java
349 lines
18 KiB
Java
// ysearchitem.java
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// (C) 2004-2008 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 2004 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.TreeSet;
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import de.anomic.http.httpHeader;
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import de.anomic.index.indexWord;
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import de.anomic.kelondro.kelondroBitfield;
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import de.anomic.kelondro.kelondroMSetTools;
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import de.anomic.plasma.plasmaCondenser;
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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.plasmaSearchRankingProfile;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.server.serverCore;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.server.logging.serverLog;
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import de.anomic.tools.yFormatter;
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import de.anomic.xml.RSSFeed;
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import de.anomic.xml.RSSMessage;
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import de.anomic.yacy.yacyURL;
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public class result {
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch<?> env) {
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final plasmaSwitchboard sb = (plasmaSwitchboard) env;
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sb.localSearchLastAccess = System.currentTimeMillis();
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boolean searchAllowed = sb.getConfigBool("publicSearchpage", true) || sb.verifyAuthentication(header, false);
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boolean authenticated = sb.adminAuthenticated(header) >= 2;
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int display = (post == null) ? 0 : post.getInt("display", 0);
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if ((display == 1) && (!authenticated)) display = 0;
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int input = (post == null) ? 2 : post.getInt("input", 2);
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String promoteSearchPageGreeting = env.getConfig("promoteSearchPageGreeting", "");
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if (env.getConfigBool("promoteSearchPageGreeting.useNetworkName", false)) promoteSearchPageGreeting = env.getConfig("network.unit.description", "");
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if (promoteSearchPageGreeting.length() == 0) promoteSearchPageGreeting = "P2P WEB SEARCH";
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String client = (String) header.get(httpHeader.CONNECTION_PROP_CLIENTIP); // the search client who initiated the search
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// get query
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String querystring = (post == null) ? "" : post.get("search", "").trim();
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final serverObjects prop = new serverObjects();
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boolean rss = (post == null) ? false : post.get("rss", "false").equals("true");
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if ((post == null) || (env == null) || (querystring.length() == 0) || (!searchAllowed)) {
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// we create empty entries for template strings
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prop.put("searchagain", "0");
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prop.put("input", input);
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prop.put("display", display);
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prop.put("input_input", input);
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prop.put("input_display", display);
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prop.put("promoteSearchPageGreeting", promoteSearchPageGreeting);
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prop.put("input_former", "");
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prop.put("former", "");
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prop.put("input_count", "10");
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prop.put("input_offset", "0");
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prop.put("input_resource", "global");
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prop.put("input_urlmaskfilter", ".*");
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prop.put("input_prefermaskfilter", "");
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prop.put("input_indexof", "off");
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prop.put("input_constraint", "");
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prop.put("input_cat", "href");
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prop.put("input_depth", "0");
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prop.put("input_contentdom", "text");
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prop.put("input_contentdomCheckText", "1");
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prop.put("input_contentdomCheckAudio", "0");
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prop.put("input_contentdomCheckVideo", "0");
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prop.put("input_contentdomCheckImage", "0");
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prop.put("input_contentdomCheckApp", "0");
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prop.put("excluded", "0");
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prop.put("results", "");
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prop.put("resultTable", "0");
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prop.put("num-results", searchAllowed ? "0" : "4");
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return prop;
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}
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// collect search attributes
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int maxDistance = Integer.MAX_VALUE;
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if ((querystring.length() > 2) && (querystring.charAt(0) == '"') && (querystring.charAt(querystring.length() - 1) == '"')) {
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querystring = querystring.substring(1, querystring.length() - 1).trim();
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maxDistance = 1;
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}
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if (sb.facilityDB != null) try { sb.facilityDB.update("zeitgeist", querystring, post); } catch (Exception e) {}
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int itemsPerPage = post.getInt("count", 10);
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int offset = post.getInt("offset", 0);
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boolean global = (post == null) ? true : post.get("resource", "global").equals("global");
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final boolean indexof = post.get("indexof","").equals("on");
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String urlmask = "";
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if (post.containsKey("urlmask") && post.get("urlmask").equals("no")) {
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urlmask = ".*";
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} else {
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urlmask = (post.containsKey("urlmaskfilter")) ? (String) post.get("urlmaskfilter") : ".*";
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}
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String prefermask = post.get("prefermaskfilter", "");
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if ((prefermask.length() > 0) && (prefermask.indexOf(".*") < 0)) prefermask = ".*" + prefermask + ".*";
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kelondroBitfield constraint = ((post.containsKey("constraint")) && (post.get("constraint", "").length() > 0)) ? new kelondroBitfield(4, post.get("constraint", "______")) : null;
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if (indexof) {
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constraint = new kelondroBitfield(4);
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constraint.set(plasmaCondenser.flag_cat_indexof, true);
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}
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int domainzone = post.getInt("zone", yacyURL.TLD_any_zone_filter);
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// SEARCH
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//final boolean indexDistributeGranted = sb.getConfig(plasmaSwitchboard.INDEX_DIST_ALLOW, "true").equals("true");
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//final boolean indexReceiveGranted = sb.getConfig("allowReceiveIndex", "true").equals("true");
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//final boolean offline = yacyCore.seedDB.mySeed().isVirgin();
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final boolean clustersearch = sb.isRobinsonMode() &&
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(sb.getConfig("cluster.mode", "").equals("privatecluster") ||
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sb.getConfig("cluster.mode", "").equals("publiccluster"));
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//if (offline || !indexDistributeGranted || !indexReceiveGranted) { global = false; }
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if (clustersearch) global = true; // switches search on, but search target is limited to cluster nodes
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// find search domain
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int contentdomCode = plasmaSearchQuery.contentdomParser(post.get("contentdom", "text"));
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// patch until better search profiles are available
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if ((contentdomCode != plasmaSearchQuery.CONTENTDOM_TEXT) && (itemsPerPage <= 32)) itemsPerPage = 32;
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// check the search tracker
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TreeSet<Long> trackerHandles = sb.localSearchTracker.get(client);
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if (trackerHandles == null) trackerHandles = new TreeSet<Long>();
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boolean block = false;
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if (trackerHandles.tailSet(new Long(System.currentTimeMillis() - 3000)).size() > 1) try {
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Thread.sleep(3000);
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block = true;
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} catch (InterruptedException e) { e.printStackTrace(); }
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if (trackerHandles.tailSet(new Long(System.currentTimeMillis() - 60000)).size() > 12) try {
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Thread.sleep(10000);
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block = true;
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} catch (InterruptedException e) { e.printStackTrace(); }
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if (trackerHandles.tailSet(new Long(System.currentTimeMillis() - 600000)).size() > 36) try {
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Thread.sleep(30000);
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block = true;
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} catch (InterruptedException e) { e.printStackTrace(); }
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if ((!block) && (post.get("cat", "href").equals("href"))) {
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final TreeSet<String>[] query = plasmaSearchQuery.cleanQuery(querystring); // converts also umlaute
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boolean near = (query[0].contains("near")) && (querystring.indexOf("NEAR") >= 0);
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if (near) {
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query[0].remove("near");
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}
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plasmaSearchRankingProfile ranking = sb.getRanking();
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if (near) {
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ranking.coeff_worddistance = plasmaSearchRankingProfile.COEFF_MAX;
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}
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// filter out stopwords
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final TreeSet<String> filtered = kelondroMSetTools.joinConstructive(query[0], plasmaSwitchboard.stopwords);
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if (filtered.size() > 0) {
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kelondroMSetTools.excludeDestructive(query[0], plasmaSwitchboard.stopwords);
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}
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// prepare search properties
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final boolean yacyonline = ((sb.webIndex.seedDB != null) && (sb.webIndex.seedDB.mySeed() != null) && (sb.webIndex.seedDB.mySeed().getPublicAddress() != null));
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final boolean globalsearch = (global) && (yacyonline) && (sb.getConfigBool(plasmaSwitchboard.INDEX_RECEIVE_ALLOW, false));
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// do the search
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TreeSet<String> queryHashes = indexWord.words2hashes(query[0]);
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plasmaSearchQuery theQuery = new plasmaSearchQuery(
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querystring,
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queryHashes,
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indexWord.words2hashes(query[1]),
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ranking,
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maxDistance,
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prefermask,
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contentdomCode,
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true,
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itemsPerPage,
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offset,
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urlmask,
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(clustersearch && globalsearch) ? plasmaSearchQuery.SEARCHDOM_CLUSTERALL :
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((globalsearch) ? plasmaSearchQuery.SEARCHDOM_GLOBALDHT : plasmaSearchQuery.SEARCHDOM_LOCAL),
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"",
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20,
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constraint,
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true,
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domainzone,
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client);
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// tell all threads to do nothing for a specific time
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sb.intermissionAllThreads(3000);
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// filter out words that appear in bluelist
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theQuery.filterOut(plasmaSwitchboard.blueList);
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// log
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serverLog.logInfo("LOCAL_SEARCH", "INIT WORD SEARCH: " + theQuery.queryString + ":" + theQuery.queryHashes + " - " + theQuery.neededResults() + " links to be computed, " + theQuery.displayResults() + " lines to be displayed");
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RSSFeed.channels(RSSFeed.LOCALSEARCH).addMessage(new RSSMessage("Local Search Request", theQuery.queryString, ""));
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long timestamp = System.currentTimeMillis();
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// create a new search event
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if (plasmaSearchEvent.getEvent(theQuery.id(false)) == null) {
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theQuery.setOffset(0); // in case that this is a new search, always start without a offset
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offset = 0;
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}
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plasmaSearchEvent theSearch = plasmaSearchEvent.getEvent(theQuery, ranking, sb.webIndex, sb.crawlResults, (sb.isRobinsonMode()) ? sb.clusterhashes : null, false);
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// generate result object
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serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER ORDERING OF SEARCH RESULTS: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
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serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER RESULT PREPARATION: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
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// calc some more cross-reference
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serverLog.logFine("LOCAL_SEARCH", "SEARCH TIME AFTER XREF PREPARATION: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
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// log
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serverLog.logInfo("LOCAL_SEARCH", "EXIT WORD SEARCH: " + theQuery.queryString + " - " +
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(theSearch.getRankingResult().getLocalResourceSize() + theSearch.getRankingResult().getRemoteResourceSize()) + " links found, " +
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((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
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// prepare search statistics
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theQuery.resultcount = theSearch.getRankingResult().getLocalResourceSize() + theSearch.getRankingResult().getRemoteResourceSize();
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theQuery.searchtime = System.currentTimeMillis() - timestamp;
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theQuery.urlretrievaltime = theSearch.getURLRetrievalTime();
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theQuery.snippetcomputationtime = theSearch.getSnippetComputationTime();
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sb.localSearches.add(theQuery);
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// update the search tracker
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trackerHandles.add(theQuery.handle);
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sb.localSearchTracker.put(client, trackerHandles);
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int totalcount = theSearch.getRankingResult().getLocalResourceSize() + theSearch.getRankingResult().getRemoteResourceSize();
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prop.put("num-results_offset", offset);
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prop.put("num-results_itemscount", "0");
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prop.put("num-results_itemsPerPage", itemsPerPage);
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prop.put("num-results_totalcount", yFormatter.number(totalcount, !rss));
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prop.put("num-results_globalresults", (globalsearch) ? "1" : "0");
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prop.put("num-results_globalresults_localResourceSize", yFormatter.number(theSearch.getRankingResult().getLocalResourceSize(), !rss));
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prop.put("num-results_globalresults_remoteResourceSize", yFormatter.number(theSearch.getRankingResult().getRemoteResourceSize(), !rss));
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prop.put("num-results_globalresults_remoteIndexCount", yFormatter.number(theSearch.getRankingResult().getRemoteIndexCount(), !rss));
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prop.put("num-results_globalresults_remotePeerCount", yFormatter.number(theSearch.getRankingResult().getRemotePeerCount(), !rss));
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// generate the search result lines; they will be produced by another servlet
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for (int i = 0; i < theQuery.displayResults(); i++) {
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prop.put("results_" + i + "_item", offset + i);
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prop.put("results_" + i + "_eventID", theQuery.id(false));
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prop.put("results_" + i + "_ID", theQuery.id(false).substring(1,6));
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}
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prop.put("results", theQuery.displayResults());
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prop.put("resultTable", (contentdomCode <= 1) ? "0" : "1");
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prop.put("eventID", theQuery.id(false)); // for bottomline
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prop.put("ID", theQuery.id(false).substring(1,6)); // for bottomline
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// process result of search
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if (filtered.size() > 0) {
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prop.put("excluded", "1");
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prop.putHTML("excluded_stopwords", filtered.toString());
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} else {
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prop.put("excluded", "0");
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}
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if (prop == null || prop.isEmpty()) {
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if (post.get("search", "").length() < 3) {
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prop.put("num-results", "2"); // no results - at least 3 chars
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} else {
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prop.put("num-results", "1"); // no results
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}
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} else {
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prop.put("num-results", "3");
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}
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prop.put("input_cat", "href");
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prop.put("input_depth", "0");
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// adding some additional properties needed for the rss feed
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String hostName = (String) header.get("Host", "localhost");
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if (hostName.indexOf(":") == -1) hostName += ":" + serverCore.getPortNr(env.getConfig("port", "8080"));
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prop.put("searchBaseURL", "http://" + hostName + "/yacysearch.html");
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prop.put("rssYacyImageURL", "http://" + hostName + "/env/grafics/yacy.gif");
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}
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prop.put("searchagain", global ? "1" : "0");
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prop.put("input", input);
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prop.put("display", display);
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prop.put("input_input", input);
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prop.put("input_display", display);
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prop.put("promoteSearchPageGreeting", promoteSearchPageGreeting);
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prop.putHTML("input_former", querystring);
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//prop.put("former", post.get("search", ""));
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prop.put("input_count", itemsPerPage);
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prop.put("input_offset", offset);
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prop.put("input_resource", global ? "global" : "local");
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prop.putHTML("input_urlmaskfilter", urlmask);
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prop.putHTML("input_prefermaskfilter", prefermask);
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prop.put("input_indexof", (indexof) ? "on" : "off");
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prop.put("input_constraint", (constraint == null) ? "" : constraint.exportB64());
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prop.put("input_contentdom", post.get("contentdom", "text"));
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prop.put("input_contentdomCheckText", (contentdomCode == plasmaSearchQuery.CONTENTDOM_TEXT) ? "1" : "0");
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prop.put("input_contentdomCheckAudio", (contentdomCode == plasmaSearchQuery.CONTENTDOM_AUDIO) ? "1" : "0");
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prop.put("input_contentdomCheckVideo", (contentdomCode == plasmaSearchQuery.CONTENTDOM_VIDEO) ? "1" : "0");
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prop.put("input_contentdomCheckImage", (contentdomCode == plasmaSearchQuery.CONTENTDOM_IMAGE) ? "1" : "0");
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prop.put("input_contentdomCheckApp", (contentdomCode == plasmaSearchQuery.CONTENTDOM_APP) ? "1" : "0");
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// for RSS: don't HTML encode some elements
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prop.putHTML("rss_query", querystring, true);
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prop.put("rss_queryenc", yacyURL.escape(querystring.replace(' ', '+')));
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sb.localSearchLastAccess = System.currentTimeMillis();
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// return rewrite properties
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return prop;
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}
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/*
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private static String navhidden(int page, int display, plasmaSearchQuery theQuery) {
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return
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"<input type=\"hidden\" name=\"display\" value=\"" + display + "\" />" +
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"<input type=\"hidden\" name=\"search\" value=\"" + theQuery.queryString() + "\" />" +
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"<input type=\"hidden\" name=\"count\" value=\"" + theQuery.displayResults() + "\" />" +
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"<input type=\"hidden\" name=\"offset\" value=\"" + (page * theQuery.displayResults()) + "\" />" +
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"<input type=\"hidden\" name=\"resource\" value=\"" + theQuery.searchdom() + "\" />" +
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"<input type=\"hidden\" name=\"urlmaskfilter\" value=\"" + theQuery.urlMask + "\" />" +
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"<input type=\"hidden\" name=\"prefermaskfilter\" value=\"" + theQuery.prefer + "\" />" +
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"<input type=\"hidden\" name=\"cat\" value=\"href\" />" +
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"<input type=\"hidden\" name=\"constraint\" value=\"" + ((theQuery.constraint == null) ? "" : theQuery.constraint.exportB64()) + "\" />" +
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"<input type=\"hidden\" name=\"contentdom\" value=\"" + theQuery.contentdom() + "\" />" +
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"<input type=\"hidden\" name=\"former\" value=\"" + theQuery.queryString() + "\" />";
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}
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*/
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}
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