Examples of org.apache.lucene.index.Term

org.apache.lucene.index.Term
A Term represents a word from text. This is the unit of search. It is composed of two elements, the text of the word, as a string, and the name of the field that the text occurred in. Note that terms may represent more than words from text fields, but also things like dates, email addresses, urls, etc.

    String fieldname = String.valueOf(condition.getField().getId());


    switch (specifier) {
      case IS:
      case IS_NOT:
        return new TermQuery(new Term(fieldname, value));


      case IS_GREATER_THAN: {
        Term lowerBound = new Term(fieldname, value);
        Term upperBound = new Term(fieldname, MAX_NUMBER);


        return new ConstantScoreRangeQuery(fieldname, lowerBound.text(), upperBound.text(), false, false);
      }


      case IS_LESS_THAN: {
        Term lowerBound = new Term(fieldname, MIN_NUMBER);
        Term upperBound = new Term(fieldname, value);


        return new ConstantScoreRangeQuery(fieldname, lowerBound.text(), upperBound.text(), false, false);
      }
    }


    throw new UnsupportedOperationException("Unsupported Specifier for Number Queries");
  }

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        if (newsDoc.addFields()) {
          docCount++;


          /* Update Event */
          if (isUpdate) {
            Term term = createTerm(news);
            if (acid)
              fUncommittedNews.addUpdatedEntity(news);
            fIndexWriter.updateDocument(term, newsDoc.getDocument());
          }

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  synchronized void removeFromIndex(Collection<NewsReference> entities) throws IOException {
    int docCount = 0;


    /* For each entity */
    for (NewsReference newsRef : entities) {
      Term term = createTerm(newsRef);
      fUncommittedNews.addRemovedEntityId(newsRef.getId());
      fIndexWriter.deleteDocuments(term);
      docCount++;
    }

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    return indexWriter;
  }


  private Term createTerm(ModelReference reference) {
    String value = String.valueOf(reference.getId());
    return new Term(SearchDocument.ENTITY_ID_TEXT, value);
  }

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    return new Term(SearchDocument.ENTITY_ID_TEXT, value);
  }


  private Term createTerm(IEntity entity) {
    String value = String.valueOf(entity.getId());
    return new Term(SearchDocument.ENTITY_ID_TEXT, value);
  }

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    String fieldName = String.valueOf(INews.STATE);
    Occur occur = condition.getSpecifier().isNegation() ? Occur.MUST_NOT : Occur.SHOULD;
    EnumSet<INews.State> newsStates = (EnumSet<State>) condition.getValue();
    for (INews.State state : newsStates) {
      String value = String.valueOf(state.ordinal());
      TermQuery stateQuery = new TermQuery(new Term(fieldName, value));
      statesQuery.add(new BooleanClause(stateQuery, occur));
    }


    /* Check if the match-all-docs query is required */
    if (condition.getSpecifier().isNegation())

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   * Will fallback to a TermQuery if the search-term is not valid for a
   * WildcardQuery
   */
  private static Query createWildcardQuery(String field, String term) {
    if (String.valueOf(INews.LABEL).equals(field) || isValidWildcardTerm(term))
      return new WildcardQuery(new Term(field, term));


    return new TermQuery(new Term(field, term));
  }

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  }


  private static Query createAgeQuery(ISearchCondition condition, String fieldname, String value) {
    switch (condition.getSpecifier()) {
      case IS: {
        return new TermQuery(new Term(fieldname, value));
      }


      case IS_GREATER_THAN: {
        Term lowerBound = new Term(fieldname, MIN_DATE);
        Term upperBound = new Term(fieldname, value);


        return new ConstantScoreRangeQuery(fieldname, lowerBound.text(), upperBound.text(), false, false);
      }


      case IS_LESS_THAN: {
        Term lowerBound = new Term(fieldname, value);
        Term upperBound = new Term(fieldname, MAX_DATE);


        return new ConstantScoreRangeQuery(fieldname, lowerBound.text(), upperBound.text(), false, false);
      }
    }


    throw new UnsupportedOperationException("Unsupported Specifier for Age Query"); //$NON-NLS-1$
  }

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      }
    }


    /* The folder could be empty, make sure to add at least 1 Clause */
    if (bQuery.clauses().isEmpty())
      bQuery.add(new TermQuery(new Term(String.valueOf(INews.FEED), "")), Occur.SHOULD); //$NON-NLS-1$


    return bQuery;
  }

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    if (bookmark != null) {
      BooleanQuery bookMarkLocationQuery = new BooleanQuery();


      /* Match on Feed */
      String feed = bookmark.getFeedLinkReference().getLinkAsText().toLowerCase();
      bookMarkLocationQuery.add(new TermQuery(new Term(String.valueOf(INews.FEED), feed)), Occur.MUST);


      /* But ignore News from Bins */
      bookMarkLocationQuery.add(new TermQuery(new Term(String.valueOf(INews.PARENT_ID), NumberTools.longToString(0))), Occur.MUST);


      bQuery.add(bookMarkLocationQuery, Occur.SHOULD);
    }
  }

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