[24722] | 1 | /*
|
---|
[25853] | 2 | * SharedSoleneGS2FieldSearch.java -- shared base code for Solr and Lucene
|
---|
| 3 | * Copyright (C) 2006 New Zealand Digital Library, http://www.nzdl.org
|
---|
| 4 | *
|
---|
| 5 | * This program is free software; you can redistribute it and/or modify
|
---|
| 6 | * the Free Software Foundation; either version 2 of the License, or
|
---|
| 7 | * (at your option) any later version.
|
---|
| 8 | *
|
---|
| 9 | * This program is distributed in the hope that it will be useful,
|
---|
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 12 | * GNU General Public License for more details.
|
---|
| 13 | *
|
---|
| 14 | * You should have received a copy of the GNU General Public License
|
---|
| 15 | * along with this program; if not, write to the Free Software
|
---|
| 16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
| 17 | */
|
---|
[24722] | 18 |
|
---|
| 19 | package org.greenstone.gsdl3.service;
|
---|
| 20 |
|
---|
| 21 | // Greenstone classes
|
---|
| 22 | import java.util.ArrayList;
|
---|
| 23 |
|
---|
| 24 | import org.apache.log4j.Logger;
|
---|
[29143] | 25 | import org.greenstone.LuceneWrapper4.SharedSoleneQuery;
|
---|
[25853] | 26 | import org.greenstone.gsdl3.util.GSXML;
|
---|
[28966] | 27 | import org.greenstone.gsdl3.util.XMLConverter;
|
---|
| 28 |
|
---|
[27800] | 29 | import org.w3c.dom.Document;
|
---|
[25853] | 30 | import org.w3c.dom.Element;
|
---|
| 31 | import org.w3c.dom.NodeList;
|
---|
[24722] | 32 |
|
---|
| 33 | // Shared code for Solr and Lucene GS2FieldSearch
|
---|
| 34 |
|
---|
| 35 | public abstract class SharedSoleneGS2FieldSearch extends AbstractGS2FieldSearch
|
---|
| 36 | {
|
---|
[28061] | 37 |
|
---|
| 38 | protected static String RANK_PARAM_RANK = "rank";
|
---|
| 39 | protected static String RANK_PARAM_NONE = "none";
|
---|
| 40 |
|
---|
[27800] | 41 | protected static final String SORT_ELEM = "sort";
|
---|
[29427] | 42 | protected static final String DEFAULT_SORT_ELEM = "defaultSort";
|
---|
[24722] | 43 |
|
---|
[29427] | 44 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.service.SharedSoleneGS2FieldSearch.class.getName());
|
---|
[24722] | 45 |
|
---|
[29427] | 46 | protected SharedSoleneQuery solene_src = null;
|
---|
| 47 | protected String default_sort = "";
|
---|
[28181] | 48 |
|
---|
[25853] | 49 | public SharedSoleneGS2FieldSearch()
|
---|
| 50 | {
|
---|
[29558] | 51 | does_paging = true;
|
---|
| 52 | does_chunking = false; // actually it can but we don't want to do a max docs, as we are already paging results
|
---|
| 53 |
|
---|
[25853] | 54 | // Lucene/Solr uses double operators, not single
|
---|
[29168] | 55 | //AND_OPERATOR = "&&";
|
---|
| 56 | //OR_OPERATOR = "||";
|
---|
| 57 | AND_OPERATOR = "AND";
|
---|
| 58 | OR_OPERATOR = "OR";
|
---|
| 59 | NOT_OPERATOR = "NOT";
|
---|
[24722] | 60 |
|
---|
| 61 | }
|
---|
| 62 |
|
---|
[25853] | 63 | /** configure this service */
|
---|
| 64 | public boolean configure(Element info, Element extra_info)
|
---|
| 65 | {
|
---|
| 66 | if (!super.configure(info, extra_info))
|
---|
| 67 | {
|
---|
| 68 | return false;
|
---|
| 69 | }
|
---|
| 70 |
|
---|
[27800] | 71 | // the search element
|
---|
| 72 | Element config_search = (Element) GSXML.getChildByTagName(extra_info, GSXML.SEARCH_ELEM);
|
---|
| 73 | Document owner = info.getOwnerDocument();
|
---|
[28181] | 74 | // find the sort fields in serviceRack xml, and add in the deisplayItems if any
|
---|
[27800] | 75 | NodeList sort_nodes = info.getElementsByTagName(SORT_ELEM);
|
---|
| 76 |
|
---|
| 77 | for (int i = 0; i < sort_nodes.getLength(); i++)
|
---|
| 78 | {
|
---|
| 79 | Element sort = (Element) sort_nodes.item(i);
|
---|
| 80 | String name = sort.getAttribute(GSXML.NAME_ATT);
|
---|
| 81 | Element node_extra = GSXML.getNamedElement(config_search, SORT_ELEM, GSXML.NAME_ATT, name);
|
---|
| 82 | if (node_extra == null)
|
---|
| 83 | {
|
---|
| 84 | logger.error("haven't found extra info for sort field named " + name);
|
---|
| 85 | continue;
|
---|
| 86 | }
|
---|
| 87 |
|
---|
| 88 | // get the display elements if any - displayName
|
---|
| 89 | NodeList display_names = node_extra.getElementsByTagName(GSXML.DISPLAY_TEXT_ELEM);
|
---|
| 90 | if (display_names != null)
|
---|
| 91 | {
|
---|
| 92 | for (int j = 0; j < display_names.getLength(); j++)
|
---|
| 93 | {
|
---|
| 94 | Element e = (Element) display_names.item(j);
|
---|
| 95 | sort.appendChild(owner.importNode(e, true));
|
---|
| 96 | }
|
---|
| 97 | }
|
---|
| 98 | } // for each sortfield
|
---|
[29427] | 99 |
|
---|
| 100 | // get the default sort field
|
---|
| 101 | Element def = (Element) GSXML.getChildByTagName(info, DEFAULT_SORT_ELEM);
|
---|
| 102 | if (def != null)
|
---|
| 103 | {
|
---|
| 104 | this.default_sort = def.getAttribute(GSXML.SHORTNAME_ATT);
|
---|
| 105 | }
|
---|
| 106 |
|
---|
[25853] | 107 | // Lucene/Solr doesn't do case folding or stemming or accent folding at the
|
---|
| 108 | // moment
|
---|
| 109 | does_case = false;
|
---|
| 110 | does_stem = false;
|
---|
| 111 | does_accent = false;
|
---|
| 112 |
|
---|
| 113 | return true;
|
---|
| 114 | }
|
---|
| 115 |
|
---|
| 116 | /** add in the Lucene/Solr specific params to TextQuery */
|
---|
| 117 | protected void addCustomQueryParams(Element param_list, String lang)
|
---|
| 118 | {
|
---|
| 119 | super.addCustomQueryParams(param_list, lang);
|
---|
[27800] | 120 | /** Lucene's/Solr's rank (sort) param is based on sort fields, not ranked/not */
|
---|
[25853] | 121 | createParameter(RANK_PARAM, param_list, lang);
|
---|
| 122 | }
|
---|
[29318] | 123 | /** add in Lucene/SOLR specific params for AdvancedFieldQuery */
|
---|
| 124 | protected void addCustomQueryParamsAdvField(Element param_list, String lang)
|
---|
| 125 | {
|
---|
| 126 | super.addCustomQueryParamsAdvField(param_list, lang);
|
---|
| 127 | createParameter(RANK_PARAM, param_list, lang);
|
---|
| 128 |
|
---|
| 129 | }
|
---|
[25853] | 130 |
|
---|
| 131 | /** create a param and add to the list */
|
---|
| 132 | /** we override this to do a special rank param */
|
---|
[28966] | 133 | protected void createParameter(String name, Element param_list, String lang)
|
---|
[25853] | 134 | {
|
---|
[28966] | 135 | Document doc = param_list.getOwnerDocument();
|
---|
[24722] | 136 | Element param = null;
|
---|
[28181] | 137 | String param_default = paramDefaults.get(name);
|
---|
[25853] | 138 | if (name.equals(RANK_PARAM))
|
---|
| 139 | {
|
---|
[24722] | 140 | // get the fields
|
---|
[25635] | 141 | ArrayList<String> fields = new ArrayList<String>();
|
---|
| 142 | ArrayList<String> field_names = new ArrayList<String>();
|
---|
[29427] | 143 | param_default = default_sort;
|
---|
[28181] | 144 | if (!getSortData(fields, field_names, lang)) {
|
---|
| 145 | fields.add(RANK_PARAM_RANK);
|
---|
| 146 | fields.add(RANK_PARAM_NONE);
|
---|
| 147 | field_names.add(getTextString("param." + RANK_PARAM + "." + RANK_PARAM_RANK, lang));
|
---|
| 148 | field_names.add(getTextString("param." + RANK_PARAM + "." + RANK_PARAM_NONE, lang));
|
---|
[29427] | 149 | param_default = RANK_PARAM_RANK;
|
---|
[27817] | 150 | }
|
---|
[29427] | 151 | else {
|
---|
| 152 | if (param_default == null) {
|
---|
| 153 | param_default = fields.get(0);
|
---|
| 154 | }
|
---|
| 155 | }
|
---|
| 156 | param = GSXML.createParameterDescription2(doc, name, getTextString("param." + name, lang), GSXML.PARAM_TYPE_ENUM_SINGLE, param_default, fields, field_names);
|
---|
[28181] | 157 |
|
---|
[29543] | 158 | }
|
---|
[28030] | 159 |
|
---|
[25853] | 160 | if (param != null)
|
---|
| 161 | {
|
---|
[24722] | 162 | param_list.appendChild(param);
|
---|
[25853] | 163 | }
|
---|
| 164 | else
|
---|
| 165 | {
|
---|
[24722] | 166 | super.createParameter(name, param_list, lang);
|
---|
| 167 | }
|
---|
[27800] | 168 |
|
---|
[24722] | 169 | }
|
---|
[25853] | 170 |
|
---|
[27817] | 171 | protected boolean getSortData(ArrayList<String> sort_ids, ArrayList<String> sort_names, String lang) {
|
---|
[27800] | 172 |
|
---|
| 173 | Element sort_list = (Element) GSXML.getChildByTagName(this.config_info, SORT_ELEM + GSXML.LIST_MODIFIER);
|
---|
[27817] | 174 | if (sort_list == null) return false;
|
---|
[27800] | 175 | NodeList sorts = sort_list.getElementsByTagName(SORT_ELEM);
|
---|
| 176 | int len = sorts.getLength();
|
---|
[27817] | 177 | if (len == 0) return false;
|
---|
[27800] | 178 | for (int i = 0; i < len; i++)
|
---|
| 179 | {
|
---|
| 180 | Element sort = (Element) sorts.item(i);
|
---|
| 181 | String shortname = sort.getAttribute(GSXML.SHORTNAME_ATT);
|
---|
| 182 | sort_ids.add(shortname);
|
---|
[30632] | 183 | String display_name = getDisplayText(sort, GSXML.DISPLAY_TEXT_NAME, lang, "en");
|
---|
[27800] | 184 | if (display_name.equals(""))
|
---|
| 185 | {
|
---|
| 186 | display_name = sort.getAttribute(GSXML.NAME_ATT);
|
---|
| 187 | if (display_name.equals(""))
|
---|
| 188 | {
|
---|
| 189 | display_name = shortname;
|
---|
| 190 | }
|
---|
| 191 | }
|
---|
| 192 | sort_names.add(display_name);
|
---|
| 193 |
|
---|
| 194 | }
|
---|
[27817] | 195 | return true;
|
---|
[27800] | 196 | }
|
---|
[25853] | 197 |
|
---|
| 198 | protected String addFieldInfo(String query, String field)
|
---|
| 199 | {
|
---|
| 200 | // currently, allfields (ZZ) is stored as a extra field for Lucene
|
---|
| 201 | if (field.equals(""))
|
---|
| 202 | { // || field.equals("ZZ")) {
|
---|
| 203 | return query;
|
---|
| 204 | }
|
---|
| 205 | return field + ":(" + query + ")";
|
---|
[24722] | 206 | }
|
---|
[25853] | 207 |
|
---|
| 208 | protected void addQueryElem(StringBuffer s, String q, String f, String c)
|
---|
| 209 | {
|
---|
| 210 |
|
---|
| 211 | String combine = "";
|
---|
| 212 | if (s.length() > 0)
|
---|
| 213 | {
|
---|
| 214 | combine = " " + c + " ";
|
---|
| 215 | }
|
---|
| 216 | s.append(combine + addFieldInfo(q, f));
|
---|
[24722] | 217 | }
|
---|
| 218 |
|
---|
[25853] | 219 | /** Lucene/Solr doesn't use these options at the moment */
|
---|
| 220 | protected String addStemOptions(String query, String stem, String casef, String accent)
|
---|
| 221 | {
|
---|
| 222 | return query;
|
---|
| 223 | }
|
---|
[24722] | 224 |
|
---|
[25853] | 225 | /**
|
---|
| 226 | * Lucene/Solr does not use internal ids. It just uses hash ids. So we need
|
---|
| 227 | * to override these methods so no conversion is done.
|
---|
| 228 | */
|
---|
| 229 | /** convert indexer internal id to Greenstone oid */
|
---|
| 230 | protected String internalNum2OID(long docnum)
|
---|
| 231 | {
|
---|
| 232 | return Long.toString(docnum);
|
---|
| 233 | }
|
---|
| 234 |
|
---|
| 235 | protected String internalNum2OID(String docnum)
|
---|
| 236 | {
|
---|
| 237 | return docnum;
|
---|
| 238 |
|
---|
| 239 | }
|
---|
[24722] | 240 | }
|
---|