mirror of
https://github.com/yacy/yacy_search_server.git
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c8624903c6
terms (words) are not any more retrieved by their word hash string, but by a byte[] containing the word hash. this has strong advantages when RWIs are sorted in the ReferenceContainer Cache and compared with the sun.java TreeMap method, which needed getBytes() and new String() transformations before. Many thousands of such conversions are now omitted every second, which increases the indexing speed by a factor of two. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5812 6c8d7289-2bf4-0310-a012-ef5d649a1542
206 lines
12 KiB
Java
206 lines
12 KiB
Java
// plasmaSearchAPI.java
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// -----------------------
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// (C) 2008 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 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: 2007-11-14 01:15:28 +0000 (Mi, 14 Nov 2007) $
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// $LastChangedRevision: 4216 $
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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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package de.anomic.plasma;
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import java.util.Date;
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import java.util.Iterator;
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import java.util.List;
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import de.anomic.data.Blacklist;
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import de.anomic.data.listManager;
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import de.anomic.kelondro.order.Bitfield;
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import de.anomic.kelondro.text.metadataPrototype.URLMetadataRow;
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import de.anomic.kelondro.text.referencePrototype.WordReferenceRow;
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import de.anomic.kelondro.util.DateFormatter;
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import de.anomic.plasma.parser.Condenser;
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import de.anomic.server.serverObjects;
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import de.anomic.yacy.yacySeed;
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import de.anomic.yacy.yacyURL;
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import de.anomic.yacy.dht.PeerSelection;
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public class plasmaSearchAPI {
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// collection of static methods for a search servlet. Exists only to prevent that the same processes are defined more than once.
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public static Bitfield compileFlags(final serverObjects post) {
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final Bitfield b = new Bitfield(4);
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if (post.get("allurl", "").equals("on")) return null;
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if (post.get("flags") != null) {
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if (post.get("flags","").length() == 0) return null;
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return new Bitfield(4, post.get("flags"));
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}
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if (post.get("description", "").equals("on")) b.set(WordReferenceRow.flag_app_dc_description, true);
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if (post.get("title", "").equals("on")) b.set(WordReferenceRow.flag_app_dc_title, true);
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if (post.get("creator", "").equals("on")) b.set(WordReferenceRow.flag_app_dc_creator, true);
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if (post.get("subject", "").equals("on")) b.set(WordReferenceRow.flag_app_dc_subject, true);
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if (post.get("url", "").equals("on")) b.set(WordReferenceRow.flag_app_dc_identifier, true);
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if (post.get("emphasized", "").equals("on")) b.set(WordReferenceRow.flag_app_emphasized, true);
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if (post.get("image", "").equals("on")) b.set(Condenser.flag_cat_hasimage, true);
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if (post.get("audio", "").equals("on")) b.set(Condenser.flag_cat_hasaudio, true);
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if (post.get("video", "").equals("on")) b.set(Condenser.flag_cat_hasvideo, true);
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if (post.get("app", "").equals("on")) b.set(Condenser.flag_cat_hasapp, true);
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if (post.get("indexof", "").equals("on")) b.set(Condenser.flag_cat_indexof, true);
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return b;
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}
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public static void listHosts(final serverObjects prop, final byte[] startHash, final plasmaSwitchboard sb) {
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// list known hosts
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yacySeed seed;
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int hc = 0;
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prop.put("searchresult_keyhash", startHash);
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final Iterator<yacySeed> e = PeerSelection.getAcceptRemoteIndexSeeds(sb.webIndex.peers(), startHash, sb.webIndex.peers().sizeConnected(), true);
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while (e.hasNext()) {
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seed = e.next();
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if (seed != null) {
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prop.put("searchresult_hosts_" + hc + "_hosthash", seed.hash);
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prop.putHTML("searchresult_hosts_" + hc + "_hostname", seed.hash + " " + seed.get(yacySeed.NAME, "nameless"));
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hc++;
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}
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}
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prop.put("searchresult_hosts", hc);
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}
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public static plasmaSearchRankingProcess genSearchresult(final serverObjects prop, final plasmaSwitchboard sb, final byte[] keyhash, final Bitfield filter) {
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final plasmaSearchQuery query = new plasmaSearchQuery(new String(keyhash), -1, sb.getRanking(), filter);
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final plasmaSearchRankingProcess ranked = new plasmaSearchRankingProcess(sb.webIndex, query, Integer.MAX_VALUE, 1);
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ranked.execQuery();
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if (ranked.filteredCount() == 0) {
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prop.put("searchresult", 2);
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prop.put("searchresult_wordhash", keyhash);
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} else {
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prop.put("searchresult", 3);
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prop.put("searchresult_allurl", ranked.filteredCount());
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prop.put("searchresult_description", ranked.flagCount()[WordReferenceRow.flag_app_dc_description]);
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prop.put("searchresult_title", ranked.flagCount()[WordReferenceRow.flag_app_dc_title]);
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prop.put("searchresult_creator", ranked.flagCount()[WordReferenceRow.flag_app_dc_creator]);
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prop.put("searchresult_subject", ranked.flagCount()[WordReferenceRow.flag_app_dc_subject]);
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prop.put("searchresult_url", ranked.flagCount()[WordReferenceRow.flag_app_dc_identifier]);
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prop.put("searchresult_emphasized", ranked.flagCount()[WordReferenceRow.flag_app_emphasized]);
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prop.put("searchresult_image", ranked.flagCount()[Condenser.flag_cat_hasimage]);
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prop.put("searchresult_audio", ranked.flagCount()[Condenser.flag_cat_hasaudio]);
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prop.put("searchresult_video", ranked.flagCount()[Condenser.flag_cat_hasvideo]);
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prop.put("searchresult_app", ranked.flagCount()[Condenser.flag_cat_hasapp]);
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prop.put("searchresult_indexof", ranked.flagCount()[Condenser.flag_cat_indexof]);
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}
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return ranked;
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}
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public static void genURLList(final serverObjects prop, final byte[] keyhash, final String keystring, final plasmaSearchRankingProcess ranked, final Bitfield flags, final int maxlines) {
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// search for a word hash and generate a list of url links
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prop.put("genUrlList_keyHash", new String(keyhash));
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if (ranked.filteredCount() == 0) {
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prop.put("genUrlList", 1);
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prop.put("genUrlList_count", 0);
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prop.put("searchresult", 2);
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} else {
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prop.put("genUrlList", 2);
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prop.put("searchresult", 3);
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prop.put("genUrlList_flags", (flags == null) ? "" : flags.exportB64());
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prop.put("genUrlList_lines", maxlines);
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int i = 0;
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yacyURL url;
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URLMetadataRow entry;
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String us;
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long rn = -1;
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while ((ranked.size() > 0) && ((entry = ranked.bestURL(false)) != null)) {
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if ((entry == null) || (entry.metadata() == null)) continue;
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url = entry.metadata().url();
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if (url == null) continue;
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us = url.toNormalform(false, false);
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if (rn == -1) rn = entry.ranking();
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prop.put("genUrlList_urlList_"+i+"_urlExists", "1");
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prop.put("genUrlList_urlList_"+i+"_urlExists_urlhxCount", i);
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prop.putHTML("genUrlList_urlList_"+i+"_urlExists_urlhxValue", entry.word().metadataHash());
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prop.putHTML("genUrlList_urlList_"+i+"_urlExists_keyString", keystring);
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prop.put("genUrlList_urlList_"+i+"_urlExists_keyHash", new String(keyhash));
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prop.putHTML("genUrlList_urlList_"+i+"_urlExists_urlString", us);
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prop.put("genUrlList_urlList_"+i+"_urlExists_urlStringShort", (us.length() > 40) ? (us.substring(0, 20) + "<br>" + us.substring(20, 40) + "...") : ((us.length() > 30) ? (us.substring(0, 20) + "<br>" + us.substring(20)) : us));
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_ranking", (entry.ranking() - rn));
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_domlength", yacyURL.domLengthEstimation(entry.hash()));
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_ybr", plasmaSearchRankingProcess.ybr(entry.hash()));
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_tf", 1000.0 * entry.word().termFrequency());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_authority", (ranked.getOrder() == null) ? -1 : ranked.getOrder().authority(entry.hash()));
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prop.put("genUrlList_urlList_"+i+"_urlExists_date", DateFormatter.formatShortDay(new Date(entry.word().lastModified())));
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_wordsintitle", entry.word().wordsintitle());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_wordsintext", entry.word().wordsintext());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_phrasesintext", entry.word().phrasesintext());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_llocal", entry.word().llocal());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_lother", entry.word().lother());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_hitcount", entry.word().hitcount());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_worddistance", 0);
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_pos", entry.word().minposition());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_phrase", entry.word().posofphrase());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_posinphrase", entry.word().posinphrase());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_urlcomps", entry.word().urlcomps());
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prop.putNum("genUrlList_urlList_"+i+"_urlExists_urllength", entry.word().urllength());
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prop.put("genUrlList_urlList_"+i+"_urlExists_props",
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((entry.word().flags().get(Condenser.flag_cat_indexof)) ? "appears on index page, " : "") +
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((entry.word().flags().get(Condenser.flag_cat_hasimage)) ? "contains images, " : "") +
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((entry.word().flags().get(Condenser.flag_cat_hasaudio)) ? "contains audio, " : "") +
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((entry.word().flags().get(Condenser.flag_cat_hasvideo)) ? "contains video, " : "") +
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((entry.word().flags().get(Condenser.flag_cat_hasapp)) ? "contains applications, " : "") +
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((entry.word().flags().get(WordReferenceRow.flag_app_dc_identifier)) ? "appears in url, " : "") +
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((entry.word().flags().get(WordReferenceRow.flag_app_dc_title)) ? "appears in title, " : "") +
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((entry.word().flags().get(WordReferenceRow.flag_app_dc_creator)) ? "appears in author, " : "") +
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((entry.word().flags().get(WordReferenceRow.flag_app_dc_subject)) ? "appears in subject, " : "") +
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((entry.word().flags().get(WordReferenceRow.flag_app_dc_description)) ? "appears in description, " : "") +
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((entry.word().flags().get(WordReferenceRow.flag_app_emphasized)) ? "appears emphasized, " : "") +
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((yacyURL.probablyRootURL(entry.word().metadataHash())) ? "probably root url" : "")
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);
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if (plasmaSwitchboard.urlBlacklist.isListed(Blacklist.BLACKLIST_DHT, url)) {
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prop.put("genUrlList_urlList_"+i+"_urlExists_urlhxChecked", "1");
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}
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i++;
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if ((maxlines >= 0) && (i >= maxlines)) break;
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}
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final Iterator<String> iter = ranked.miss(); // iterates url hash strings
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while (iter.hasNext()) {
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us = iter.next();
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prop.put("genUrlList_urlList_"+i+"_urlExists", "0");
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prop.put("genUrlList_urlList_"+i+"_urlExists_urlhxCount", i);
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prop.putHTML("genUrlList_urlList_"+i+"_urlExists_urlhxValue", us);
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i++;
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}
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prop.put("genUrlList_urlList", i);
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prop.putHTML("genUrlList_keyString", keystring);
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prop.put("genUrlList_count", i);
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putBlacklists(prop, listManager.getDirListing(listManager.listsPath));
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}
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}
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public static void putBlacklists(final serverObjects prop, final List<String> lists) {
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prop.put("genUrlList_blacklists", lists.size());
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int i = 0;
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for (String list : lists)
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prop.put("genUrlList_blacklists_" + i++ + "_name", list);
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}
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}
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