Java Code Examples for org.apache.lucene.search.PhraseQuery#add()

/**
 * Create a Lucene query using the bigrams in the given text
 * @param text
 */
public BooleanQuery queryFromSkipBigrams(String text) {
	BooleanQuery q = new BooleanQuery();
	String prev_word = null;
	for (String word : text.split("\\W+")) {
		if (prev_word != null) {
			PhraseQuery pq = new PhraseQuery();
			pq.setSlop(1);
			pq.add(new Term("text", prev_word));
			pq.add(new Term("text", word));
			q.add(pq, BooleanClause.Occur.SHOULD);
		}
		q.add(new TermQuery(new Term("text", word)), BooleanClause.Occur.SHOULD);
		prev_word = word;
	}
	return q;
}
 

/**
 * When a @FullTextFilterDef annotation associates this factory class with a given name, and a "FullTextQuery.enableFullTextFilter()" is 
 * called with that name as its input parameter, then this method is used to return a Filter with the actual filtering logic.  It is 
 * the @Factory annotation that designates this method as having that responsibility for this factory class. 
 */
@Factory
public Filter getFilter() {
	StringTokenizer tokenzier = new StringTokenizer(deviceName.toLowerCase());
	PhraseQuery query = new PhraseQuery();
	while(tokenzier.hasMoreTokens()) {
		// By default, field values were converted to lower-case when indexed by Lucene.  So be sure to 
		// convert search terms to lower-case in order to make them match.
		Term term = new Term("supportedDevices.name", tokenzier.nextToken().toLowerCase());
		query.add(term);
	}
	Filter filter = new QueryWrapperFilter(query);
	return new CachingWrapperFilter(filter);
}
 

/**
 * When a @FullTextFilterDef annotation associates this factory class with a given name, and a "FullTextQuery.enableFullTextFilter()" is 
 * called with that name as its input parameter, then this method is used to return a Filter with the actual filtering logic.  It is 
 * the @Factory annotation that designates this method as having that responsibility for this factory class. 
 */
@Factory
public Filter getFilter() {
	StringTokenizer tokenzier = new StringTokenizer(deviceName.toLowerCase());
	PhraseQuery query = new PhraseQuery();
	while(tokenzier.hasMoreTokens()) {
		// By default, field values were converted to lower-case when indexed by Lucene.  So be sure to 
		// convert search terms to lower-case in order to make them match.
		Term term = new Term("supportedDevices.name", tokenzier.nextToken().toLowerCase());
		query.add(term);
	}
	Filter filter = new QueryWrapperFilter(query);
	return new CachingWrapperFilter(filter);
}
 

/**
 * When a @FullTextFilterDef annotation associates this factory class with a given name, and a "FullTextQuery.enableFullTextFilter()" is 
 * called with that name as its input parameter, then this method is used to return a Filter with the actual filtering logic.  It is 
 * the @Factory annotation that designates this method as having that responsibility for this factory class. 
 */
@Factory
public Filter getFilter() {
	StringTokenizer tokenzier = new StringTokenizer(deviceName.toLowerCase());
	PhraseQuery query = new PhraseQuery();
	while(tokenzier.hasMoreTokens()) {
		// By default, field values were converted to lower-case when indexed by Lucene.  So be sure to 
		// convert search terms to lower-case in order to make them match.
		Term term = new Term("supportedDevices.name", tokenzier.nextToken().toLowerCase());
		query.add(term);
	}
	Filter filter = new QueryWrapperFilter(query);
	return new CachingWrapperFilter(filter);
}
 

/**
 * @param query
 *            - a query
 * @param field
 *            - the field where to search the query
 * @return number of documents containing the text in query in the given
 *         fields
 */
public int getFreq(String query, String field) {
	Query q = null;
	searcher = getSearcher();
	TopScoreDocCollector collector = TopScoreDocCollector.create(1, true);

	// try {

	Text t = new Text(query).disableStopwords();
	PhraseQuery pq = new PhraseQuery();
	int i = 0;
	for (String term : t.getTerms()) {
		pq.add(new Term(field, term), i++);
	}
	q = pq;
	logger.debug(q.toString());
	// } catch (ParseException e) {
	// logger.error("querying the index: {} ", e.toString());
	// return -1;
	// }
	try {
		searcher.search(q, collector);
	} catch (IOException e) {
		logger.error("querying the index: {} ", e.toString());
		return -1;
	}
	return collector.getTotalHits();
}
 

@Override
public void addFilterConstraint(final List<Query> filters, final String value, SolrQueryRequest request) {
	final PhraseQuery query = new PhraseQuery();
	query.add(new Term(Field.TEXT_OBJECT, value));
	filters.add(query);
}