mirror of https://github.com/apache/lucene.git
highlighting: SOLR-24
git-svn-id: https://svn.apache.org/repos/asf/incubator/solr/trunk@421678 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yonik Seeley
parent
bf363aafc7
commit
1c06c77393
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@ -18,14 +18,15 @@ New Features
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10. copyField accepts dynamicfield-like names as the source.
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(Darren Erik Vengroff via yonik, SOLR-21)
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11. new DocSet.andNot(), DocSet.andNotSize() (yonik)
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12. Ability to store term vectors. (Note: standard request handler does
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not currently do anything with term vectors) (Mike Klaas via yonik, SOLR-23)
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12. Ability to store term vectors for fields. (Mike Klaas via yonik, SOLR-23)
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13. New abstract BufferedTokenStream for people who want to write
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Tokenizers or TokenFilters that require arbitrary buffering of the
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stream. (SOLR-11 / yonik, hossman)
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14. New RemoveDuplicatesToken - useful in situations where
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synonyms, stemming, or word-deliminater-ing produce identical tokens at
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the same position. (SOLR-11 / yonik, hossman)
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15. Added highlighting to SolrPluginUtils and implemented in StandardRequestHandler
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and DisMaxRequestHandler (SOLR-24 / Mike Klaas via hossman,yonik)
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Changes in runtime behavior
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1. classes reorganized into different packages, package names changed to Apache
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@ -41,6 +41,7 @@ import org.apache.solr.schema.FieldType;
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import org.apache.solr.util.StrUtils;
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import org.apache.solr.util.NamedList;
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import org.apache.solr.util.SolrPluginUtils;
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import org.apache.solr.util.DisMaxParams;
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import org.apache.lucene.document.Document;
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import org.apache.lucene.document.Field;
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@ -161,7 +162,7 @@ public class DisMaxRequestHandler
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/* :NOOP */
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}
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protected final U.CommonParams params = new U.CommonParams();
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protected final DisMaxParams params = new DisMaxParams();
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public DisMaxRequestHandler() {
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super();
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@ -219,6 +220,7 @@ public class DisMaxRequestHandler
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try {
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int flags = 0;
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SolrIndexSearcher s = req.getSearcher();
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IndexSchema schema = req.getSchema();
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@ -267,7 +269,7 @@ public class DisMaxRequestHandler
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if (dis instanceof BooleanQuery) {
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BooleanQuery t = new BooleanQuery();
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U.flatenBooleanQuery(t, (BooleanQuery)dis);
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U.flattenBooleanQuery(t, (BooleanQuery)dis);
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U.setMinShouldMatch(t, minShouldMatch);
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@ -332,19 +334,19 @@ public class DisMaxRequestHandler
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/* * * Generate Main Results * * */
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flags |= U.setReturnFields(U.getParam(req, params.FL, params.fl), rsp);
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DocList results = s.getDocList(query, restrictions,
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SolrPluginUtils.getSort(req),
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req.getStart(), req.getLimit(),
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SolrIndexSearcher.GET_SCORES);
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flags);
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rsp.add("search-results",results);
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U.setReturnFields(U.getParam(req, params.FL, params.fl), rsp);
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/* * * Debugging Info * * */
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try {
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NamedList debug = U.doStandardDebug(req, userQuery, query, results);
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NamedList debug = U.doStandardDebug(req, userQuery, query, results, params);
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if (null != debug) {
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debug.add("boostquery", boostQuery);
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debug.add("boostfunc", boostFunc);
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@ -364,6 +366,18 @@ public class DisMaxRequestHandler
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rsp.add("exception_during_debug", SolrException.toStr(e));
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}
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/* * * Highlighting/Summarizing * * */
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if(U.getBooleanParam(req, params.HIGHLIGHT, params.highlight)) {
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BooleanQuery highlightQuery = new BooleanQuery();
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U.flattenBooleanQuery(highlightQuery, query);
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NamedList sumData = U.doStandardHighlighting(results, highlightQuery,
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req, params,
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queryFields.keySet().toArray(new String[0]));
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if(sumData != null)
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rsp.add("highlighting", sumData);
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}
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} catch (Exception e) {
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SolrException.log(SolrCore.log,e);
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rsp.setException(e);
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@ -29,6 +29,8 @@ import java.net.URL;
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import org.apache.solr.util.StrUtils;
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import org.apache.solr.util.NamedList;
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import org.apache.solr.util.SolrPluginUtils;
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import org.apache.solr.util.CommonParams;
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import org.apache.solr.search.*;
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import org.apache.solr.schema.IndexSchema;
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import org.apache.solr.core.SolrCore;
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@ -47,14 +49,18 @@ public class StandardRequestHandler implements SolrRequestHandler, SolrInfoMBean
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long numRequests;
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long numErrors;
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/** shorten the class referneces for utilities */
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private static class U extends SolrPluginUtils {
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/* :NOOP */
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}
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/** parameters garnered from config file */
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protected final CommonParams params = new CommonParams();
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public void init(NamedList args) {
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SolrCore.log.log(Level.INFO, "Unused request handler arguments:" + args);
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params.setValues(args);
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}
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private final Pattern splitList=Pattern.compile(",| ");
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public void handleRequest(SolrQueryRequest req, SolrQueryResponse rsp) {
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numRequests++;
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@ -63,24 +69,14 @@ public class StandardRequestHandler implements SolrRequestHandler, SolrInfoMBean
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// we need to un-escape them before we pass to QueryParser
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try {
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String sreq = req.getQueryString();
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String debug = req.getParam("debugQuery");
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String defaultField = req.getParam("df");
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String debug = U.getParam(req, params.DEBUG_QUERY, params.debugQuery);
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String defaultField = U.getParam(req, params.DF, params.df);
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// find fieldnames to return (fieldlist)
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String fl = req.getParam("fl");
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int flags=0;
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String fl = U.getParam(req, params.FL, params.fl);
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int flags = 0;
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if (fl != null) {
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// TODO - this could become more efficient if widely used.
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// TODO - should field order be maintained?
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String[] flst = splitList.split(fl,0);
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if (flst.length > 0 && !(flst.length==1 && flst[0].length()==0)) {
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Set<String> set = new HashSet<String>();
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for (String fname : flst) {
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if ("score".equals(fname)) flags |= SolrIndexSearcher.GET_SCORES;
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set.add(fname);
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}
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rsp.setReturnFields(set);
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}
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flags |= U.setReturnFields(fl, rsp);
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}
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if (sreq==null) throw new SolrException(400,"Missing queryString");
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@ -104,25 +100,20 @@ public class StandardRequestHandler implements SolrRequestHandler, SolrInfoMBean
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DocList results = req.getSearcher().getDocList(query, null, sort, req.getStart(), req.getLimit(), flags);
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rsp.add(null,results);
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if (debug!=null) {
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NamedList dbg = new NamedList();
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try {
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dbg.add("querystring",qs);
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dbg.add("parsedquery",QueryParsing.toString(query,req.getSchema()));
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dbg.add("explain", getExplainList(query, results, req.getSearcher(), req.getSchema()));
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String otherQueryS = req.getParam("explainOther");
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if (otherQueryS != null && otherQueryS.length() > 0) {
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DocList otherResults = doQuery(otherQueryS,req.getSearcher(), req.getSchema(),0,10);
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dbg.add("otherQuery",otherQueryS);
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dbg.add("explainOther", getExplainList(query, otherResults, req.getSearcher(), req.getSchema()));
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}
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NamedList dbg = U.doStandardDebug(req, qs, query, results, params);
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if (null != dbg)
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rsp.add("debug", dbg);
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} catch (Exception e) {
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SolrException.logOnce(SolrCore.log,"Exception during debug:",e);
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dbg.add("exception_during_debug", SolrException.toStr(e));
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}
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rsp.add("debug",dbg);
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SolrException.logOnce(SolrCore.log, "Exception durring debug", e);
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rsp.add("exception_during_debug", SolrException.toStr(e));
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}
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NamedList sumData = SolrPluginUtils.doStandardHighlighting(
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results, query, req, params, new String[]{defaultField});
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if(sumData != null)
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rsp.add("highlighting", sumData);
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} catch (SolrException e) {
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rsp.setException(e);
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numErrors++;
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@ -135,52 +126,6 @@ public class StandardRequestHandler implements SolrRequestHandler, SolrInfoMBean
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}
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}
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private NamedList getExplainList(Query query, DocList results, SolrIndexSearcher searcher, IndexSchema schema) throws IOException {
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NamedList explainList = new NamedList();
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DocIterator iterator = results.iterator();
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for (int i=0; i<results.size(); i++) {
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int id = iterator.nextDoc();
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Explanation explain = searcher.explain(query, id);
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//explainList.add(Integer.toString(id), explain.toString().split("\n"));
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Document doc = searcher.doc(id);
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String strid = schema.printableUniqueKey(doc);
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String docname = "";
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if (strid != null) docname="id="+strid+",";
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docname = docname + "internal_docid="+id;
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explainList.add(docname, "\n" +explain.toString());
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}
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return explainList;
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}
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private DocList doQuery(String sreq, SolrIndexSearcher searcher, IndexSchema schema, int start, int limit) throws IOException {
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List<String> commands = StrUtils.splitSmart(sreq,';');
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String qs = commands.size() >= 1 ? commands.get(0) : "";
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Query query = QueryParsing.parseQuery(qs, schema);
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// If the first non-query, non-filter command is a simple sort on an indexed field, then
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// we can use the Lucene sort ability.
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Sort sort = null;
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if (commands.size() >= 2) {
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QueryParsing.SortSpec sortSpec = QueryParsing.parseSort(commands.get(1), schema);
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if (sortSpec != null) {
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sort = sortSpec.getSort();
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if (sortSpec.getCount() >= 0) {
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limit = sortSpec.getCount();
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}
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}
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}
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DocList results = searcher.getDocList(query,(DocSet)null, sort, start, limit);
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return results;
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}
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//////////////////////// SolrInfoMBeans methods //////////////////////
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@ -16,6 +16,7 @@
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package org.apache.solr.util;
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import org.apache.solr.core.Config; // highlighting
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import org.apache.solr.core.SolrCore;
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import org.apache.solr.core.SolrInfoMBean;
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import org.apache.solr.core.SolrException;
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@ -40,6 +41,7 @@ import org.apache.solr.schema.FieldType;
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import org.apache.solr.util.StrUtils;
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import org.apache.solr.util.NamedList;
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import org.apache.solr.util.XML;
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import org.apache.lucene.document.Document;
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import org.apache.lucene.document.Field;
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@ -53,9 +55,22 @@ import org.apache.lucene.search.BooleanClause.Occur;
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import org.apache.lucene.search.ConstantScoreRangeQuery;
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import org.apache.lucene.search.Sort;
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import org.apache.lucene.search.Explanation;
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import org.apache.lucene.search.highlight.Highlighter; // highlighting
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import org.apache.lucene.search.highlight.TokenSources;
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import org.apache.lucene.search.highlight.QueryScorer;
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import org.apache.lucene.search.highlight.Encoder;
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import org.apache.lucene.search.highlight.SimpleHTMLFormatter;
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import org.apache.lucene.search.highlight.Formatter;
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import org.apache.lucene.search.highlight.SimpleFragmenter;
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import org.apache.lucene.search.highlight.TextFragment;
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import org.apache.lucene.search.highlight.NullFragmenter;
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import org.apache.lucene.queryParser.QueryParser;
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import org.apache.lucene.queryParser.ParseException;
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import org.apache.lucene.analysis.Analyzer;
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import org.apache.lucene.analysis.TokenStream;
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import org.apache.lucene.analysis.TokenFilter;
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import org.apache.lucene.analysis.Token;
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import org.xmlpull.v1.XmlPullParserException;
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@ -73,6 +88,8 @@ import java.util.Map;
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import java.util.HashMap;
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import java.util.regex.Pattern;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.StringWriter; // highlighting
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import java.net.URL;
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/**
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@ -84,6 +101,9 @@ import java.net.URL;
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* </p>
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*
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* <p>:TODO: refactor StandardRequestHandler to use these utilities</p>
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*
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* <p>:TODO: Many "standard" functionality methods are not cognisant of
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* default parameter settings.
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*/
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public class SolrPluginUtils {
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@ -108,6 +128,8 @@ public class SolrPluginUtils {
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String param, String def) {
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String v = req.getParam(param);
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// Note: parameters passed but given only white-space value are
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// considered equvalent to passing nothing for that parameter.
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if (null == v || "".equals(v.trim())) {
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return def;
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}
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@ -134,7 +156,18 @@ public class SolrPluginUtils {
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return r;
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}
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/**
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* Treats parameter value as a boolean. The string 'false' is false;
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* any other non-empty string is true.
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*/
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public static boolean getBooleanParam(SolrQueryRequest req,
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String param, boolean def) {
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String v = req.getParam(param);
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if (null == v || "".equals(v.trim())) {
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return def;
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}
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return !"false".equals(v.trim());
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}
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private final static Pattern splitList=Pattern.compile(",| ");
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@ -142,29 +175,36 @@ public class SolrPluginUtils {
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* Assumes the standard query param of "fl" to specify the return fields
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* @see #setReturnFields(String,SolrQueryResponse)
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*/
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public static void setReturnFields(SolrQueryRequest req,
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public static int setReturnFields(SolrQueryRequest req,
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SolrQueryResponse res) {
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setReturnFields(req.getParam(FL), res);
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return setReturnFields(req.getParam(FL), res);
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}
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/**
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* Given a space seperated list of field names, sets the field list on the
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* SolrQueryResponse.
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*
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* @return bitfield of SolrIndexSearcher flags that need to be set
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*/
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public static void setReturnFields(String fl,
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public static int setReturnFields(String fl,
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SolrQueryResponse res) {
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int flags = 0;
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if (fl != null) {
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// TODO - this could become more efficient if widely used.
|
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// TODO - should field order be maintained?
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String[] flst = splitList.split(fl.trim(),0);
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if (flst.length > 0 && !(flst.length==1 && flst[0].length()==0)) {
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Set<String> set = new HashSet<String>();
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for (String fname : flst) set.add(fname);
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for (String fname : flst) {
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if("score".equalsIgnoreCase(fname))
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flags |= SolrIndexSearcher.GET_SCORES;
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set.add(fname);
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}
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res.setReturnFields(set);
|
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}
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}
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return flags;
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}
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/**
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|
@ -201,24 +241,24 @@ public class SolrPluginUtils {
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* @param query the query built from the userQuery
|
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* (and perhaps other clauses) that identifies the main
|
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* result set of the response.
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* @param results the main result set of hte response
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* @param results the main result set of the response
|
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*/
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public static NamedList doStandardDebug(SolrQueryRequest req,
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String userQuery,
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Query query,
|
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DocList results)
|
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DocList results,
|
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CommonParams params)
|
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throws IOException {
|
||||
|
||||
|
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String debug = req.getParam("debugQuery");
|
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String debug = getParam(req, params.DEBUG_QUERY, params.debugQuery);
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NamedList dbg = null;
|
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if (debug!=null) {
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dbg = new NamedList();
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/* userQuery may have been pre-processes .. expose that */
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dbg.add("rawquerystring",req.getQueryString());
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dbg.add("querystring",userQuery);
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dbg.add("rawquerystring", req.getQueryString());
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dbg.add("querystring", userQuery);
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/* QueryParsing.toString isn't perfect, use it to see converted
|
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* values, use regular toString to see any attributes of the
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|
|
@ -274,6 +314,177 @@ public class SolrPluginUtils {
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return explainList;
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}
|
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/**
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* Retrieve a default Highlighter instance for a given query.
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*
|
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* @param query Query instance
|
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*/
|
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public static Highlighter getDefaultHighlighter(Query query) {
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Highlighter highlighter = new Highlighter(
|
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new SimpleHTMLFormatter("<em>", "</em>"),
|
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new QueryScorer(query));
|
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highlighter.setTextFragmenter(new GapFragmenter());
|
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return highlighter;
|
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}
|
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/**
|
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* Generates a list of Highlighted query fragments for each item in a list
|
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* of documents. Convenience method that constructs a Highlighter from a
|
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* Query.
|
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*
|
||||
* @param docs query results
|
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* @param fieldNames list of fields to summarize
|
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* @param query resulting query object
|
||||
* @param searcher the SolrIndexSearcher corresponding to a request
|
||||
* @param numFragments maximum number of summary fragments to return for
|
||||
* a given field
|
||||
*/
|
||||
public static NamedList getHighlights(DocList docs,
|
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String[] fieldNames,
|
||||
Query query,
|
||||
SolrIndexSearcher searcher,
|
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int numFragments
|
||||
) throws IOException {
|
||||
|
||||
return getHighlights(docs, fieldNames, searcher,
|
||||
getDefaultHighlighter(query), numFragments);
|
||||
}
|
||||
|
||||
/**
|
||||
* Generates a list of Highlighted query fragments for each item in a list
|
||||
* of documents
|
||||
*
|
||||
* @param docs query results
|
||||
* @param fieldNames list of fields to summarize
|
||||
* @param searcher the SolrIndexSearcher corresponding to a request
|
||||
* @param numFragments maximum number of summary fragments to return for
|
||||
* a given field
|
||||
* @param highlighter a customized Highlighter instance
|
||||
*
|
||||
* @return NamedList containing a NamedList for each document, which in
|
||||
* turns contains sets (field, summary) pairs.
|
||||
*/
|
||||
public static NamedList getHighlights(DocList docs,
|
||||
String[] fieldNames,
|
||||
SolrIndexSearcher searcher,
|
||||
Highlighter highlighter,
|
||||
int numFragments
|
||||
) throws IOException {
|
||||
NamedList fragments = new NamedList();
|
||||
DocIterator iterator = docs.iterator();
|
||||
for (int i=0; i<docs.size(); i++) {
|
||||
int docId = iterator.nextDoc();
|
||||
// use the Searcher's doc cache
|
||||
Document doc = searcher.doc(docId);
|
||||
NamedList docSummaries = new NamedList();
|
||||
for(String fieldName : fieldNames) {
|
||||
fieldName = fieldName.trim();
|
||||
String[] docTexts = doc.getValues(fieldName);
|
||||
if(docTexts == null)
|
||||
continue;
|
||||
String[] summaries;
|
||||
TextFragment[] frag;
|
||||
if(docTexts.length == 1) {
|
||||
// single-valued field
|
||||
TokenStream tstream;
|
||||
try {
|
||||
// attempt term vectors
|
||||
tstream = TokenSources.getTokenStream(
|
||||
searcher.getReader(), docId, fieldName);
|
||||
} catch (IllegalArgumentException e) {
|
||||
// fall back to analyzer
|
||||
tstream = searcher.getSchema().getAnalyzer().tokenStream(
|
||||
fieldName, new StringReader(docTexts[0]));
|
||||
}
|
||||
frag = highlighter.getBestTextFragments(
|
||||
tstream, docTexts[0], false, numFragments);
|
||||
|
||||
} else {
|
||||
// multi-valued field
|
||||
MultiValueTokenStream tstream;
|
||||
tstream = new MultiValueTokenStream(fieldName,
|
||||
docTexts,
|
||||
searcher.getSchema().getAnalyzer());
|
||||
frag = highlighter.getBestTextFragments(
|
||||
tstream, tstream.asSingleValue(), false, numFragments);
|
||||
}
|
||||
// convert fragments back into text
|
||||
// TODO: we can include score and position information in output as
|
||||
// snippet attributes
|
||||
if(frag.length > 0) {
|
||||
ArrayList fragTexts = new ArrayList();
|
||||
for (int j = 0; j < frag.length; j++) {
|
||||
if ((frag[j] != null) && (frag[j].getScore() > 0)) {
|
||||
fragTexts.add(frag[j].toString());
|
||||
}
|
||||
}
|
||||
summaries = (String[]) fragTexts.toArray(new String[0]);
|
||||
if(summaries.length > 0)
|
||||
docSummaries.add(fieldName, summaries);
|
||||
}
|
||||
}
|
||||
String printId = searcher.getSchema().printableUniqueKey(doc);
|
||||
fragments.add(printId == null ? null : printId, docSummaries);
|
||||
}
|
||||
return fragments;
|
||||
}
|
||||
|
||||
/**
|
||||
* Perform highlighting of selected fields.
|
||||
*
|
||||
* @param docs query results
|
||||
* @param query the (possibly re-written query)
|
||||
* @param req associated SolrQueryRequest
|
||||
* @param defaultFields default search field list
|
||||
*
|
||||
* @return NamedList containing summary data, or null if highlighting is
|
||||
* disabled.
|
||||
*
|
||||
*/
|
||||
public static NamedList doStandardHighlighting(DocList docs,
|
||||
Query query,
|
||||
SolrQueryRequest req,
|
||||
CommonParams params,
|
||||
String[] defaultFields
|
||||
) throws IOException {
|
||||
if(!getBooleanParam(req, params.HIGHLIGHT, params.highlight))
|
||||
return null;
|
||||
String fieldParam = getParam(req, params.HIGHLIGHT_FIELDS,
|
||||
params.highlightFields);
|
||||
String fields[];
|
||||
if(fieldParam == null || fieldParam.trim().equals("")) {
|
||||
// use default search field if highlight fieldlist not specified.
|
||||
if (defaultFields == null || defaultFields.length == 0 ||
|
||||
defaultFields[0] == null) {
|
||||
fields = new String[]{req.getSchema().getDefaultSearchFieldName()};
|
||||
} else
|
||||
fields = defaultFields;
|
||||
} else
|
||||
fields = splitList.split(fieldParam.trim());
|
||||
|
||||
Highlighter highlighter;
|
||||
String formatterSpec = getParam(req, params.HIGHLIGHT_FORMATTER_CLASS,
|
||||
params.highlightFormatterClass);
|
||||
if(formatterSpec == null || formatterSpec.equals("")) {
|
||||
highlighter = getDefaultHighlighter(query);
|
||||
} else {
|
||||
highlighter = new Highlighter(
|
||||
(Formatter)Config.newInstance(formatterSpec),
|
||||
new QueryScorer(query));
|
||||
highlighter.setTextFragmenter(new GapFragmenter());
|
||||
}
|
||||
|
||||
int numFragments = getNumberParam(req, params.MAX_SNIPPETS,
|
||||
params.maxSnippets).intValue();
|
||||
|
||||
return getHighlights(
|
||||
docs,
|
||||
fields,
|
||||
req.getSearcher(),
|
||||
highlighter,
|
||||
numFragments);
|
||||
}
|
||||
|
||||
/**
|
||||
* Executes a basic query in lucene syntax
|
||||
*/
|
||||
|
|
@ -455,7 +666,7 @@ public class SolrPluginUtils {
|
|||
* so do not attempt to reuse it.
|
||||
* </p>
|
||||
*/
|
||||
public static void flatenBooleanQuery(BooleanQuery to, BooleanQuery from) {
|
||||
public static void flattenBooleanQuery(BooleanQuery to, BooleanQuery from) {
|
||||
|
||||
BooleanClause[] c = from.getClauses();
|
||||
for (int i = 0; i < c.length; i++) {
|
||||
|
|
@ -468,7 +679,7 @@ public class SolrPluginUtils {
|
|||
&& !c[i].isProhibited()) {
|
||||
|
||||
/* we can recurse */
|
||||
flatenBooleanQuery(to, (BooleanQuery)ci);
|
||||
flattenBooleanQuery(to, (BooleanQuery)ci);
|
||||
|
||||
} else {
|
||||
to.add(c[i]);
|
||||
|
|
@ -512,169 +723,6 @@ public class SolrPluginUtils {
|
|||
return s.toString().replace("\"","");
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* A collection on common params, both for Plugin initialization and
|
||||
* for Requests.
|
||||
*/
|
||||
public static class CommonParams {
|
||||
|
||||
/** query and init param for tiebreaker value */
|
||||
public static String TIE = "tie";
|
||||
/** query and init param for query fields */
|
||||
public static String QF = "qf";
|
||||
/** query and init param for phrase boost fields */
|
||||
public static String PF = "pf";
|
||||
/** query and init param for MinShouldMatch specification */
|
||||
public static String MM = "mm";
|
||||
/** query and init param for Phrase Slop value */
|
||||
public static String PS = "ps";
|
||||
/** query and init param for boosting query */
|
||||
public static String BQ = "bq";
|
||||
/** query and init param for boosting functions */
|
||||
public static String BF = "bf";
|
||||
/** query and init param for filtering query */
|
||||
public static String FQ = "fq";
|
||||
/** query and init param for field list */
|
||||
public static String FL = "fl";
|
||||
/** query and init param for field list */
|
||||
public static String GEN = "gen";
|
||||
|
||||
/** the default tie breaker to use in DisjunctionMaxQueries */
|
||||
public float tiebreaker = 0.0f;
|
||||
/** the default query fields to be used */
|
||||
public String qf = null;
|
||||
/** the default phrase boosting fields to be used */
|
||||
public String pf = null;
|
||||
/** the default min should match to be used */
|
||||
public String mm = "100%";
|
||||
/** the default phrase slop to be used */
|
||||
public int pslop = 0;
|
||||
/** the default boosting query to be used */
|
||||
public String bq = null;
|
||||
/** the default boosting functions to be used */
|
||||
public String bf = null;
|
||||
/** the default filtering query to be used */
|
||||
public String fq = null;
|
||||
/** the default field list to be used */
|
||||
public String fl = null;
|
||||
|
||||
public CommonParams() {
|
||||
/* :NOOP: */
|
||||
}
|
||||
|
||||
/** @see #setValues */
|
||||
public CommonParams(NamedList args) {
|
||||
this();
|
||||
setValues(args);
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the params using values from a NamedList, usefull in the
|
||||
* init method for your handler.
|
||||
*
|
||||
* <p>
|
||||
* If any param is not of the expected type, a severe error is
|
||||
* logged,and the param is skipped.
|
||||
* </p>
|
||||
*
|
||||
* <p>
|
||||
* If any param is not of in the NamedList, it is skipped and the
|
||||
* old value is left alone.
|
||||
* </p>
|
||||
*
|
||||
*/
|
||||
public void setValues(NamedList args) {
|
||||
|
||||
Object tmp;
|
||||
|
||||
tmp = args.get(TIE);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof Float) {
|
||||
tiebreaker = ((Float)tmp).floatValue();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not a float: " + TIE);
|
||||
}
|
||||
}
|
||||
|
||||
tmp = args.get(QF);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof String) {
|
||||
qf = tmp.toString();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not a str: " + QF);
|
||||
}
|
||||
}
|
||||
|
||||
tmp = args.get(PF);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof String) {
|
||||
pf = tmp.toString();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not a str: " + PF);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
tmp = args.get(MM);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof String) {
|
||||
mm = tmp.toString();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not a str: " + MM);
|
||||
}
|
||||
}
|
||||
|
||||
tmp = args.get(PS);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof Integer) {
|
||||
pslop = ((Integer)tmp).intValue();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not an int: " + PS);
|
||||
}
|
||||
}
|
||||
|
||||
tmp = args.get(BQ);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof String) {
|
||||
bq = tmp.toString();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not a str: " + BQ);
|
||||
}
|
||||
}
|
||||
|
||||
tmp = args.get(BF);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof String) {
|
||||
bf = tmp.toString();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not a str: " + BF);
|
||||
}
|
||||
}
|
||||
|
||||
tmp = args.get(FQ);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof String) {
|
||||
fq = tmp.toString();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not a str: " + FQ);
|
||||
}
|
||||
}
|
||||
|
||||
tmp = args.get(FL);
|
||||
if (null != tmp) {
|
||||
if (tmp instanceof String) {
|
||||
fl = tmp.toString();
|
||||
} else {
|
||||
SolrCore.log.severe("init param is not a str: " + FL);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* A subclass of SolrQueryParser that supports aliasing fields for
|
||||
* constructing DisjunctionMaxQueries.
|
||||
|
|
@ -763,8 +811,6 @@ public class SolrPluginUtils {
|
|||
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Determines the correct Sort based on the request parameter "sort"
|
||||
*
|
||||
|
|
@ -818,6 +864,105 @@ public class SolrPluginUtils {
|
|||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper class which creates a single TokenStream out of values from a
|
||||
* multi-valued field.
|
||||
*/
|
||||
class MultiValueTokenStream extends TokenStream {
|
||||
private String fieldName;
|
||||
private String[] values;
|
||||
private Analyzer analyzer;
|
||||
private int curIndex; // next index into the values array
|
||||
private int curOffset; // offset into concatenated string
|
||||
private TokenStream currentStream; // tokenStream currently being iterated
|
||||
|
||||
/** Constructs a TokenStream for consecutively-analyzed field values
|
||||
*
|
||||
* @param fieldName name of the field
|
||||
* @param values array of field data
|
||||
* @param analyzer analyzer instance
|
||||
*/
|
||||
public MultiValueTokenStream(String fieldName, String[] values,
|
||||
Analyzer analyzer) {
|
||||
this.fieldName = fieldName;
|
||||
this.values = values;
|
||||
this.analyzer = analyzer;
|
||||
curIndex = -1;
|
||||
curOffset = 0;
|
||||
currentStream = null;
|
||||
|
||||
}
|
||||
|
||||
/** Returns the next token in the stream, or null at EOS. */
|
||||
public Token next() throws IOException {
|
||||
int extra = 0;
|
||||
if(currentStream == null) {
|
||||
curIndex++;
|
||||
if(curIndex < values.length) {
|
||||
currentStream = analyzer.tokenStream(fieldName,
|
||||
new StringReader(values[curIndex]));
|
||||
// add extra space between multiple values
|
||||
if(curIndex > 0)
|
||||
extra = analyzer.getPositionIncrementGap(fieldName);
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
}
|
||||
Token nextToken = currentStream.next();
|
||||
if(nextToken == null) {
|
||||
curOffset += values[curIndex].length();
|
||||
currentStream = null;
|
||||
return next();
|
||||
}
|
||||
// create an modified token which is the offset into the concatenated
|
||||
// string of all values
|
||||
Token offsetToken = new Token(nextToken.termText(),
|
||||
nextToken.startOffset() + curOffset,
|
||||
nextToken.endOffset() + curOffset);
|
||||
offsetToken.setPositionIncrement(nextToken.getPositionIncrement() + extra*10);
|
||||
return offsetToken;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns all values as a single String into which the Tokens index with
|
||||
* their offsets.
|
||||
*/
|
||||
public String asSingleValue() {
|
||||
StringBuilder sb = new StringBuilder();
|
||||
for(String str : values)
|
||||
sb.append(str);
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* A simple modification of SimpleFragmenter which additionally creates new
|
||||
* fragments when an unusually-large position increment is encountered
|
||||
* (this behaves much better in the presence of multi-valued fields).
|
||||
*/
|
||||
class GapFragmenter extends SimpleFragmenter {
|
||||
public static final int INCREMENT_THRESHOLD = 50;
|
||||
protected int fragOffsetAccum = 0;
|
||||
/* (non-Javadoc)
|
||||
* @see org.apache.lucene.search.highlight.TextFragmenter#start(java.lang.String)
|
||||
*/
|
||||
public void start(String originalText) {
|
||||
fragOffsetAccum = 0;
|
||||
}
|
||||
|
||||
/* (non-Javadoc)
|
||||
* @see org.apache.lucene.search.highlight.TextFragmenter#isNewFragment(org.apache.lucene.analysis.Token)
|
||||
*/
|
||||
public boolean isNewFragment(Token token) {
|
||||
boolean isNewFrag =
|
||||
token.endOffset() >= fragOffsetAccum + getFragmentSize() ||
|
||||
token.getPositionIncrement() > INCREMENT_THRESHOLD;
|
||||
if(isNewFrag) {
|
||||
fragOffsetAccum += token.endOffset() - fragOffsetAccum;
|
||||
}
|
||||
return isNewFrag;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -339,6 +339,8 @@
|
|||
<dynamicField name="*_sI" type="string" indexed="true" stored="false"/>
|
||||
<dynamicField name="*_sS" type="string" indexed="false" stored="true"/>
|
||||
<dynamicField name="t_*" type="text" indexed="true" stored="true"/>
|
||||
<dynamicField name="tv_*" type="text" indexed="true" stored="true"
|
||||
termVectors="true" termPositions="true" termOffsets="true"/>
|
||||
|
||||
|
||||
<!-- for testing to ensure that longer patterns are matched first -->
|
||||
|
|
|
|||
Loading…
Reference in New Issue