Package org.apache.lucene.search

Examples of org.apache.lucene.search.PrefixQuery

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  public void testWildcardQuery() throws ParseException {
    doConvert(new WildcardQuery(new Term("*", "m**")));
  }

  public void testPrefixQuery() throws ParseException {
    doConvert(new PrefixQuery(new Term("tags", "h")));
  }
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  public String[] suggest(String queryString, IndexReader idxReader, String field){
    List<String> results = new ArrayList<String>(maxSuggestionSize);
    if(queryString != null && queryString.length() >= minQueryStringLength){
      Term term = new Term("t", queryString);
      PrefixQuery prefixQuery = new PrefixQuery(term);
      IndexReader indexReader = null;
      IndexSearcher indexSearch = null;
      try{
        indexReader = searchSuggestIndexer.openSuggestIndexReader();
        indexSearch = new IndexSearcher(indexReader);
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   * Builds a new PrefixQuery instance
   * @param prefix Prefix term
   * @return new PrefixQuery instance
   */
  protected Query newPrefixQuery(Term prefix){
    PrefixQuery query = new PrefixQuery(prefix);
    query.setRewriteMethod(multiTermRewriteMethod);
    return query;
  }
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  @Override
  public QParser createParser(String qstr, SolrParams localParams, SolrParams params, SolrQueryRequest req) {
    return new QParser(qstr, localParams, params, req) {
      @Override
      public Query parse() throws ParseException {
        return new PrefixQuery(new Term(localParams.get(QueryParsing.F), localParams.get(QueryParsing.V)));
      }
    };
  }
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        out.append('~');
        out.append(Integer.toString(q.getMinimumNumberShouldMatch()));
      }

    } else if (query instanceof PrefixQuery) {
      PrefixQuery q = (PrefixQuery) query;
      Term prefix = q.getPrefix();
      FieldType ft = writeFieldName(prefix.field(), schema, out, flags);
      out.append(prefix.text());
      out.append('*');
    } else if (query instanceof ConstantScorePrefixQuery) {
      ConstantScorePrefixQuery q = (ConstantScorePrefixQuery) query;
      Term prefix = q.getPrefix();
      FieldType ft = writeFieldName(prefix.field(), schema, out, flags);
      out.append(prefix.text());
      out.append('*');
    } else if (query instanceof WildcardQuery) {
      out.append(query.toString());
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    } else if(query instanceof WildcardQuery) {
      MultiTermQuery q = new WildcardQuery(query.getTerm());
      q.setBoost(query.getBoost());
      return q;
    } else if(query instanceof PrefixQuery) {
      MultiTermQuery q = new PrefixQuery(query.getTerm());
      q.setBoost(q.getBoost());
      return q;
    } else if(query instanceof FuzzyQuery) {
      FuzzyQuery q = (FuzzyQuery)query;
      q.setBoost(q.getBoost());
      return new FuzzyQuery(q.getTerm(), q.getMinSimilarity(), q.getPrefixLength());
    }
   
    return query;
  }
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   * Builds a new PrefixQuery instance
   * @param prefix Prefix term
   * @return new PrefixQuery instance
   */
  protected Query newPrefixQuery(Term prefix){
    PrefixQuery query = new PrefixQuery(prefix);
    query.setRewriteMethod(multiTermRewriteMethod);
    return query;
  }
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                break;
            }
            if (!path.endsWith("/")) {
                path += "/";
            }
            qs.add(new PrefixQuery(newPathTerm(path)));
            break;
        case DIRECT_CHILDREN:
            if (!path.endsWith("/")) {
                path += "/";
            }
            qs.add(new PrefixQuery(newPathTerm(path)));
            break;
        case EXACT:
            qs.add(new TermQuery(newPathTerm(path)));
            break;
        case PARENT:
            if (PathUtils.denotesRoot(path)) {
                // there's no parent of the root node
                // we add a path that can not possibly occur because there
                // is no way to say "match no documents" in Lucene
                qs.add(new TermQuery(new Term(FieldNames.PATH, "///")));
            } else {
                qs.add(new TermQuery(newPathTerm(PathUtils.getParentPath(path))));
            }
            break;
        case NO_RESTRICTION:
            break;
        }

        for (PropertyRestriction pr : filter.getPropertyRestrictions()) {

            if (pr.first == null && pr.last == null) {
                // ignore property existence checks, Lucene can't to 'property
                // is not null' queries (OAK-1208)
                continue;
            }

            String name = pr.propertyName;
            if (name.contains("/")) {
                // lucene cannot handle child-level property restrictions
                continue;
            }
            if ("rep:excerpt".equals(name)) {
                continue;
            }
            // TODO OAK-985
            if (JcrConstants.JCR_PRIMARYTYPE.equals(name)) {
                continue;
            }

            String first = null;
            String last = null;
            boolean isLike = pr.isLike;

            // TODO what to do with escaped tokens?
            if (pr.first != null) {
                first = pr.first.getValue(Type.STRING);
                first = first.replace("\\", "");
            }
            if (pr.last != null) {
                last = pr.last.getValue(Type.STRING);
                last = last.replace("\\", "");
            }

            if (isLike) {
                first = first.replace('%', WildcardQuery.WILDCARD_STRING);
                first = first.replace('_', WildcardQuery.WILDCARD_CHAR);

                int indexOfWS = first.indexOf(WildcardQuery.WILDCARD_STRING);
                int indexOfWC = first.indexOf(WildcardQuery.WILDCARD_CHAR);
                int len = first.length();

                if (indexOfWS == len || indexOfWC == len) {
                    // remove trailing "*" for prefixquery
                    first = first.substring(0, first.length() - 1);
                    if (JCR_PATH.equals(name)) {
                        qs.add(new PrefixQuery(newPathTerm(first)));
                    } else {
                        qs.add(new PrefixQuery(new Term(name, first)));
                    }
                } else {
                    if (JCR_PATH.equals(name)) {
                        qs.add(new WildcardQuery(newPathTerm(first)));
                    } else {
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                    Term t = new Term( indexerField.getKey(), query );

                    bq.add( new TermQuery( t ), Occur.SHOULD );

                    PrefixQuery pq = new PrefixQuery( t );
                    pq.setBoost( 0.8f );

                    bq.add( pq, Occur.SHOULD );

                    return bq;
                }
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        {
            return new TermQuery( new Term( field, q ) );
        }
        else if ( n > 0 && n == q.length() - 1 )
        {
            return new PrefixQuery( new Term( field, q.substring( 0, q.length() - 1 ) ) );
        }

        return new WildcardQuery( new Term( field, q ) );
    }
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