Exemplo n.º 1
0
QueryExecutorPtr TermQuery::createExecutor(IndexReaderPtr& pIndexReader,
        FeatureProviderPtr& pProvider, PoolPtr& pPool) const
{
    TermReaderPtr pTermReader = pIndexReader->termReader();

    TermPostingIteratorPtr pPostIter = pTermReader->seek(m_pTerm.get());
    if (pPostIter.isNull())
    {
        return QueryExecutorPtr();
    }

    QueryExecutorPtr pExe = new TermQueryExecutor(this, pPostIter,
            pProvider, pPool);
    return pExe;
}
Exemplo n.º 2
0
void IndexTestCase::checkDocFreq(IndexReaderPtr& pIndexReader,
                                 const tstring& sField, 
                                 const tstring& sTerm,
                                 df_t expDf)
{
    TermReaderPtr pTermReader = pIndexReader->termReader();
    CPPUNIT_ASSERT(pTermReader);    

    StandardAnalyzer sa;
    sa.init();

    TokenViewPtr pTokens = sa.tokenize(sTerm.c_str(), sTerm.length());
    CPPUNIT_ASSERT(pTokens.isNull() != true);
    CPPUNIT_ASSERT(pTokens->getNumTokens() == 1);
    TokenView::Iterator it = pTokens->iterator();
    TermPtr pTerm(new Term(sField, it.next().getTextValue()));

    TermPostingIteratorPtr pPost = pTermReader->seek(pTerm.get());
    CPPUNIT_ASSERT(!pPost.isNull());    
    const TermMeta& termMeta = pPost->getTermMeta();
    CPPUNIT_ASSERT_EQUAL(expDf, termMeta.getDocFreq());
}
Exemplo n.º 3
0
void IndexTestCase::testDocumentDeletion()
{
    DocumentSchema schema;
    schema.addField("URL", "PRIMARY_KEY", true);
    schema.addTextField("BODY");
    schema.addField("MODIFIED", "INT64", true);
    
    stringstream ss1;
    const size_t NUM_DOCS = 1000;
    size_t i = 0;
    for (; i < NUM_DOCS; ++i)
    {
        ss1 << "url" << i << ", body" << i << " hot," 
            << (i * 100) % 1000 << ";";
    }
    buildIndex(schema, ss1.str());

    stringstream ss2;
    for (; i < 2 * NUM_DOCS; ++i)
    {
        ss2 << "url" << i << ", body" << i << " hot," 
            << (i * 100) % 1000 << ";";
    }

    buildIndex(schema, ss2.str(), true);

    StandardAnalyzerPtr sa(new StandardAnalyzer());
    sa->init();

    TokenViewPtr pTokens = sa->tokenize("hot", 3);
    CPPUNIT_ASSERT(pTokens.isNull() != true);
    CPPUNIT_ASSERT(pTokens->getNumTokens() == 1);
    TokenView::Iterator it = pTokens->iterator();
    TermPtr pTerm(new Term("BODY", it.next().getTextValue()));
    
    tstring str = getTestPath();
    
    std::set<docid_t> answer;

    {
        Index index;
        index.open(str, Index::RDWR, NULL); 
        IndexWriterPtr pIndexWriter = index.acquireWriter();
        CPPUNIT_ASSERT(pIndexWriter != NULL);

        IndexReaderPtr pIndexReader = index.acquireReader();
        CPPUNIT_ASSERT(pIndexReader != NULL);

        for (size_t i = 0; i < 2 * NUM_DOCS; ++i)
        {
            stringstream ss;
            ss << "url" << i;
            if (i == 1000 || i == 1500 || i == 1505 || i == 1999)
            {
                pIndexWriter->deleteDocument(ss.str());
            }
            else
            {
                TermReaderPtr pTermReader = pIndexReader->termReader();
                TermPtr pTerm(new Term("URL", ss.str()));
                TermPostingIteratorPtr pIt = pTermReader->seek(pTerm.get());
                docid_t docId = pIt->skipTo(0);
                answer.insert(docId);
            }
        }

        TermReaderPtr pTermReader = pIndexReader->termReader();
        TermPostingIteratorPtr pDocFreqs = pTermReader->seek(pTerm.get());
        CPPUNIT_ASSERT(!pDocFreqs.isNull());

        CPPUNIT_ASSERT_EQUAL((df_t)NUM_DOCS * 2, pDocFreqs->getTermMeta().getDocFreq());

        std::set<docid_t>::const_iterator it = answer.begin();
        for (docid_t i = 0; i < (docid_t)(2 * NUM_DOCS); )
        {        
            docid_t docId = pDocFreqs->skipTo((docid_t)i);
            i = docId + 1;
            if (docId == INVALID_DOCID)
            {
                break;
            }
            CPPUNIT_ASSERT_EQUAL(*it, docId);
            ++it;
        }
        CPPUNIT_ASSERT(it == answer.end());
    }

    {
        Index index;
        index.open(str, Index::READ, NULL); 
        IndexReaderPtr pIndexReader = index.acquireReader();
        CPPUNIT_ASSERT(pIndexReader != NULL);

        TermReaderPtr pTermReader = pIndexReader->termReader();
        TermPostingIteratorPtr pDocFreqs = pTermReader->seek(pTerm.get());
        CPPUNIT_ASSERT(!pDocFreqs.isNull());

        CPPUNIT_ASSERT_EQUAL((df_t)(2 * NUM_DOCS), pDocFreqs->getTermMeta().getDocFreq());
        std::set<docid_t>::const_iterator it = answer.begin();
        for (docid_t i = 0; i < (docid_t)(2 * NUM_DOCS); )
        {        
            docid_t docId = pDocFreqs->skipTo((docid_t)i);
            i = docId + 1;
            if (docId == INVALID_DOCID)
            {
                break;
            }
            CPPUNIT_ASSERT_EQUAL(*it, docId);
            ++it;
        }
        CPPUNIT_ASSERT(it == answer.end());

        // for (std::set<docid_t>::const_iterator it = answer.begin();
        //      it != answer.end(); ++it)
        // {
        //     docid_t docId = pDocFreqs->skipTo(*it);
        //     CPPUNIT_ASSERT_EQUAL(*it, docId);
        // }

        // docid_t docId = pDocFreqs->skipTo(NUM_DOCS + 0);
        // CPPUNIT_ASSERT_EQUAL((docid_t)NUM_DOCS + 1, docId);
        // docId = pDocFreqs->skipTo(NUM_DOCS + 500);
        // CPPUNIT_ASSERT_EQUAL((docid_t)NUM_DOCS + 501, docId);
        // docId = pDocFreqs->skipTo(NUM_DOCS + 505);
        // CPPUNIT_ASSERT_EQUAL((docid_t)NUM_DOCS + 506, docId);
        // docId = pDocFreqs->skipTo(2 * NUM_DOCS - 1);
        // CPPUNIT_ASSERT_EQUAL((docid_t)INVALID_DOCID, docId);
    }
}