Java Code Examples for org.apache.lucene.search.Searcher#close()

@Transactional(readOnly = true)
public Pagination searchPage(Directory dir, String queryString,String category,String workplace,
		Integer siteId, Integer channelId, Date startDate, Date endDate,
		int pageNo, int pageSize) throws CorruptIndexException,
		IOException, ParseException {
	Searcher searcher = new IndexSearcher(dir);
	try {
		Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_30);
		Query query = LuceneContent.createQuery(queryString,category,workplace, siteId,
				channelId, startDate, endDate, analyzer);
		TopDocs docs = searcher.search(query, pageNo * pageSize);
		Pagination p = LuceneContent.getResultPage(searcher, docs, pageNo,
				pageSize);
		List<?> ids = p.getList();
		List<Content> contents = new ArrayList<Content>(ids.size());
		for (Object id : ids) {
			contents.add(contentMng.findById((Integer) id));
		}
		p.setList(contents);
		return p;
	} finally {
		searcher.close();
	}
}
 

@Transactional(readOnly = true)
public List<Content> searchList(Directory dir, String queryString,String category,String workplace,
		Integer siteId, Integer channelId, Date startDate, Date endDate,
		int first, int max) throws CorruptIndexException, IOException,
		ParseException {
	Searcher searcher = new IndexSearcher(dir);
	try {
		Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_30);
		Query query = LuceneContent.createQuery(queryString,category,workplace, siteId,
				channelId, startDate, endDate, analyzer);
		if (first < 0) {
			first = 0;
		}
		if (max < 0) {
			max = 0;
		}
		TopDocs docs = searcher.search(query, first + max);
		List<Integer> ids = LuceneContent.getResultList(searcher, docs,
				first, max);
		List<Content> contents = new ArrayList<Content>(ids.size());
		for (Object id : ids) {
			contents.add(contentMng.findById((Integer) id));
		}
		return contents;
	} finally {
		searcher.close();
	}
}
 

@Override
public <T> void query(
        @NonNull Collection<? super T> result,
        @NonNull Convertor<? super Document, T> convertor,
        @NullAllowed FieldSelector selector,
        @NullAllowed AtomicBoolean cancel,
        @NonNull Query... queries) throws IOException, InterruptedException {
    Parameters.notNull("queries", queries);   //NOI18N
    Parameters.notNull("convertor", convertor); //NOI18N
    Parameters.notNull("result", result);       //NOI18N   
    
    if (selector == null) {
        selector = AllFieldsSelector.INSTANCE;
    }
    
    lock.readLock().lock();
    try {
        final IndexReader in = getReader();
        if (in == null) {
            return;
        }
        final BitSet bs = new BitSet(in.maxDoc());
        final Collector c = new BitSetCollector(bs);
        final Searcher searcher = new IndexSearcher(in);
        try {
            for (Query q : queries) {
                if (cancel != null && cancel.get()) {
                    throw new InterruptedException ();
                }
                searcher.search(q, c);
            }
        } finally {
            searcher.close();
        }        
        for (int docNum = bs.nextSetBit(0); docNum >= 0; docNum = bs.nextSetBit(docNum+1)) {
            if (cancel != null && cancel.get()) {
                throw new InterruptedException ();
            }
            final Document doc = in.document(docNum, selector);
            final T value = convertor.convert(doc);
            if (value != null) {
                result.add (value);
            }
        }
    } finally {
        lock.readLock().unlock();
    }
}
 

@Override
public <S, T> void queryDocTerms(
        @NonNull Map<? super T, Set<S>> result,
        @NonNull Convertor<? super Document, T> convertor,
        @NonNull Convertor<? super Term, S> termConvertor,
        @NullAllowed FieldSelector selector,
        @NullAllowed AtomicBoolean cancel,
        @NonNull Query... queries) throws IOException, InterruptedException {
    Parameters.notNull("result", result);   //NOI18N
    Parameters.notNull("convertor", convertor);   //NOI18N
    Parameters.notNull("termConvertor", termConvertor); //NOI18N
    Parameters.notNull("queries", queries);   //NOI18N
    
    
    if (selector == null) {
        selector = AllFieldsSelector.INSTANCE;
    }

    lock.readLock().lock();
    try {
        final IndexReader in = getReader();
        if (in == null) {
            return;
        }
        final BitSet bs = new BitSet(in.maxDoc());
        final Collector c = new BitSetCollector(bs);
        final Searcher searcher = new IndexSearcher(in);
        final TermCollector termCollector = new TermCollector(c);
        try {
            for (Query q : queries) {
                if (cancel != null && cancel.get()) {
                    throw new InterruptedException ();
                }
                if (q instanceof TermCollector.TermCollecting) {
                    ((TermCollector.TermCollecting)q).attach(termCollector);
                } else {
                    throw new IllegalArgumentException (
                            String.format("Query: %s does not implement TermCollecting",    //NOI18N
                            q.getClass().getName()));
                }
                searcher.search(q, termCollector);
            }
        } finally {
            searcher.close();
        }

        for (int docNum = bs.nextSetBit(0); docNum >= 0; docNum = bs.nextSetBit(docNum+1)) {
            if (cancel != null && cancel.get()) {
                throw new InterruptedException ();
            }
            final Document doc = in.document(docNum, selector);
            final T value = convertor.convert(doc);
            if (value != null) {
                final Set<Term> terms = termCollector.get(docNum);
                if (terms != null) {
                    result.put (value, convertTerms(termConvertor, terms));
                }
            }
        }
    } finally {
        lock.readLock().unlock();
    }
}