Examples of org.apache.lucene.search.WildcardQuery

org.apache.lucene.search.WildcardQuery
Implements the wildcard search query. Supported wildcards are *, which matches any character sequence (including the empty one), and ?, which matches any single character. Note this query can be slow, as it needs to iterate over many terms. In order to prevent extremely slow WildcardQueries, a Wildcard term should not start with one of the wildcards * or ?.
This query uses the {@link MultiTermQuery#CONSTANT_SCORE_AUTO_REWRITE_DEFAULT}rewrite method. @see WildcardTermEnum

  {
    if (lowercaseExpandedTerms) {
      termStr = termStr.toLowerCase();
    }
    Term t = new Term(field, termStr);
    return new WildcardQuery(t);
  }

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         final ValueFactoryImpl valueFactory = new ValueFactoryImpl(new LocationFactory(nsReg));
         BooleanQuery.setMaxClauseCount(Integer.MAX_VALUE);
         BooleanQuery query = new BooleanQuery();


         final String prefix = nsReg.getNamespacePrefixByURI(uri);
         query.add(new WildcardQuery(new Term(FieldNames.LABEL, prefix + ":*")), Occur.SHOULD);
         // name of the property
         query.add(new WildcardQuery(new Term(FieldNames.PROPERTIES_SET, prefix + ":*")), Occur.SHOULD);


         result = getNodes(query);


         // value of the property


         try
         {
            final Set<String> props = getFieldNames();


            query = new BooleanQuery();
            for (final String fieldName : props)
            {
               if (!FieldNames.PROPERTIES_SET.equals(fieldName))
               {
                  query.add(new WildcardQuery(new Term(fieldName, "*" + prefix + ":*")), Occur.SHOULD);
               }
            }
         }
         catch (final IndexException e)
         {

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                    } else {
                        qs.add(new PrefixQuery(new Term(name, first)));
                    }
                } else {
                    if (JCR_PATH.equals(name)) {
                        qs.add(new WildcardQuery(newPathTerm(first)));
                    } else {
                        qs.add(new WildcardQuery(new Term(name, first)));
                    }
                }
                continue;
            }

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                qs.add(pq);
            } else {
                if (!token.endsWith("*")) {
                    token = token + "*";
                }
                qs.add(new WildcardQuery(newFulltextTerm(token)));
            }
            return;
        }


        BooleanQuery q = new BooleanQuery();

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                    } else {
                        qs.add(new PrefixQuery(new Term(name, first)));
                    }
                } else {
                    if (JCR_PATH.equals(name)) {
                        qs.add(new WildcardQuery(newPathTerm(first)));
                    } else {
                        qs.add(new WildcardQuery(new Term(name, first)));
                    }
                }
                continue;
            }

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            return new BooleanQuery();
        }
        if (tokens.size() == 1) {
            String token = tokens.iterator().next();
            if (hasFulltextToken(token)) {
                return new WildcardQuery(newFulltextTerm(token, fieldName));
            } else {
                return new TermQuery(newFulltextTerm(token, fieldName));
            }
        } else {
            if (hasFulltextToken(tokens)) {

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                    } else {
                        qs.add(new PrefixQuery(new Term(name, first)));
                    }
                } else {
                    if (JCR_PATH.equals(name)) {
                        qs.add(new WildcardQuery(newPathTerm(first)));
                    } else {
                        qs.add(new WildcardQuery(new Term(name, first)));
                    }
                }
                continue;
            }

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            return new BooleanQuery();
        }
        if (tokens.size() == 1) {
            String token = tokens.iterator().next();
            if (hasFulltextToken(token)) {
                return new WildcardQuery(newFulltextTerm(token, fieldName));
            } else {
                return new TermQuery(newFulltextTerm(token, fieldName));
            }
        } else {
            if (hasFulltextToken(tokens)) {

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            case BooleanQueryCriteria.OR:
                occur = BooleanClause.Occur.SHOULD;
                break;
            case BooleanQueryCriteria.NOT:
                occur = BooleanClause.Occur.MUST_NOT;
                booleanQuery.add(new WildcardQuery(new Term(((BooleanQueryCriteria) queryCriteria)
                        .getTerms().get(0).getElementName(), "*")), BooleanClause.Occur.SHOULD);
                break;
            default:
                throw new CatalogException("Invalid BooleanQueryCriteria opertor [" 
                        + ((BooleanQueryCriteria) queryCriteria).getOperator() + "]");

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                fieldName = smartNameFieldMappers.mapper().names().indexName();
                value = smartNameFieldMappers.mapper().indexedValue(value);
            }
        }


        WildcardQuery query = new WildcardQuery(new Term(fieldName, value));
        query.setRewriteMethod(QueryParsers.parseRewriteMethod(rewriteMethod));
        query.setBoost(boost);
        return wrapSmartNameQuery(query, smartNameFieldMappers, parseContext);
    }

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