Example usage for org.apache.lucene.index IndexReader close

Introduction

In this page you can find the example usage for org.apache.lucene.index IndexReader close.

Prototype

@Override
public final synchronized void close() throws IOException 

Source Link

Document

Closes files associated with this index.

Usage

From source file:it.doqui.index.ecmengine.business.personalization.multirepository.index.lucene.IndexInfoProxyService.java

License:Open Source License

/**
 * Chiude il mainReader associato ad un repository
 *
 * @param repoPath path dello store degli indici
 * @throws LuceneIndexException//from   w ww  .  j a v  a 2  s . co m
 * @throws IOException
 */
public synchronized void closeMainReader(String repoPath) throws LuceneIndexException, IOException {
    if (s_logger.isDebugEnabled()) {
        s_logger.debug("[IndexInfoProxyService::closeMainReader] (" + this + ") Status: " + toString()
                + " - isSafe: " + isIntegritySafe());
    }
    // Creo un nuovo riferimento al main
    IndexReader main = getReader(repoPath);
    // Chiudo il primo invocato dalla chiamata getReader()
    main.close();
    // Chiudo il secondo che era quello che dovevo effettivamente chiudere
    main.close();
}

---

From source file:it.doqui.index.ecmengine.business.personalization.multirepository.index.lucene.IndexInfoProxyServiceNoTC.java

License:Open Source License

/**
 * Chiude il mainReader associato ad un repository
 *
 * @param repoPath path dello store degli indici
 * @throws LuceneIndexException/*ww w .j a  v a  2s .co m*/
 * @throws IOException
 */
public synchronized void closeMainReader(String repoPath) throws LuceneIndexException, IOException {
    if (s_logger.isDebugEnabled()) {
        s_logger.debug("[IndexInfoProxyServiceNoTC::closeMainReader] (" + this + ") Status: " + toString()
                + " - isSafe: " + isIntegritySafe());
    }
    // Creo un nuovo riferimento al main
    IndexReader main = getReader(repoPath);
    // Chiudo il primo invocato dalla chiamata getReader()
    main.close();
    // Chiudo il secondo che era quello che dovevo effettivamente chiudere
    main.close();
}

---

From source file:it.doqui.index.ecmengine.business.personalization.multirepository.index.lucene.RepositoryAwareAbstractLuceneIndexerImpl.java

License:Open Source License

/**
 * Delete all index entries which do not start with the goven prefix
 *
 * @param prefix/*  www  .j  a v a  2s.  co m*/
 */
public void deleteAll(String prefix) {
    IndexReader mainReader = null;
    try {
        //            mainReader = getReader();
        for (int doc = 0; doc < mainReader.maxDoc(); doc++) {
            if (!mainReader.isDeleted(doc)) {
                Document document = mainReader.document(doc);
                String[] ids = document.getValues("ID");
                if ((prefix == null) || nonStartwWith(ids, prefix)) {
                    deletions.add(ids[ids.length - 1]);
                }
            }
        }

    } catch (IOException e) {
        // If anything goes wrong we try and do a roll back
        throw new LuceneIndexException("Failed to delete all entries from the index", e);
    } finally {
        if (mainReader != null) {
            try {
                mainReader.close();
            } catch (IOException e) {
                throw new LuceneIndexException("Filed to close main reader", e);
            }
        }
    }
}

---

From source file:it.doqui.index.ecmengine.business.personalization.splitting.index.lucene.SplittingADMIndexerImpl.java

License:Open Source License

private void addRootNodesToDeletionList() {
    IndexReader mainReader = null;
    try {/*from w w w.j  a v a2s .  c  o m*/
        try {
            mainReader = getReader();
            TermDocs td = mainReader.termDocs(new Term("ISROOT", "T"));
            while (td.next()) {
                int doc = td.doc();
                Document document = mainReader.document(doc);
                String id = document.get("ID");
                NodeRef ref = new NodeRef(id);
                deleteImpl(ref.toString(), false, true, mainReader);
            }
        } catch (IOException e) {
            throw new LuceneIndexException("Failed to delete all primary nodes", e);
        }
    } finally {
        if (mainReader != null) {
            try {
                mainReader.close();
            } catch (IOException e) {
                throw new LuceneIndexException("Filed to close main reader", e);
            }
        }
    }
}

---

From source file:it.doqui.index.ecmengine.business.personalization.splitting.index.lucene.SplittingADMIndexerImpl.java

License:Open Source License

void doFTSIndexCommit() throws LuceneIndexException {

    s_logger.error("###############################################################");
    s_logger.error("###############################################################");
    s_logger.error("###############################################################");
    s_logger.error("### Root: '" + getLuceneConfig().getIndexRootLocation() + "'");
    s_logger.error("###############################################################");
    s_logger.error("###############################################################");
    s_logger.error("###############################################################");

    // TODO: controllare multirepo
    IndexReader mainReader = null;
    IndexReader deltaReader = null;/*from  www  . ja v  a 2 s .  c  om*/
    IndexSearcher mainSearcher = null;
    IndexSearcher deltaSearcher = null;

    try {
        try {
            mainReader = getReader();
            deltaReader = getDeltaReader();
            mainSearcher = new IndexSearcher(mainReader);
            deltaSearcher = new IndexSearcher(deltaReader);

            for (Helper helper : toFTSIndex) {
                deletions.add(helper.ref);
            }

        } finally {
            if (deltaSearcher != null) {
                try {
                    deltaSearcher.close();
                } catch (IOException e) {
                    s_logger.warn("Failed to close delta searcher", e);
                }
            }
            if (mainSearcher != null) {
                try {
                    mainSearcher.close();
                } catch (IOException e) {
                    s_logger.warn("Failed to close main searcher", e);
                }
            }
            try {
                closeDeltaReader();
            } catch (LuceneIndexException e) {
                s_logger.warn("Failed to close delta reader", e);
            }
            if (mainReader != null) {
                try {
                    mainReader.close();
                } catch (IOException e) {
                    s_logger.warn("Failed to close main reader", e);
                }
            }
        }

        setInfo(docs, getDeletions(), true);
        // mergeDeltaIntoMain(new LinkedHashSet<Term>());
    } catch (IOException e) {
        // If anything goes wrong we try and do a roll back
        rollback();
        throw new LuceneIndexException("Commit failed", e);
    } catch (LuceneIndexException e) {
        // If anything goes wrong we try and do a roll back
        rollback();
        throw new LuceneIndexException("Commit failed", e);
    } finally {
        // Make sure we tidy up
        // deleteDelta();
    }
}

---

From source file:it.polito.tellmefirst.lucene.IndexesUtil.java

License:Open Source License

public static ArrayList<String> getBagOfConcepts(String uri, String lang) {
    LOG.debug("[getBagOfConcepts] - BEGIN");
    ArrayList<String> result = new ArrayList<String>();
    try {//from   ww w.ja va 2s.co  m
        String KBPath = (lang.equals("it")) ? TMFVariables.KB_IT : TMFVariables.KB_EN;
        MMapDirectory directory = new MMapDirectory(new File(KBPath));
        IndexReader reader = IndexReader.open(directory, true);
        IndexSearcher is = new IndexSearcher(directory, true);
        Query q = new TermQuery(new Term("URI", uri));
        TopDocs hits = is.search(q, 1);
        is.close();
        if (hits.totalHits != 0) {
            int docId = hits.scoreDocs[0].doc;
            org.apache.lucene.document.Document doc = reader.document(docId);
            String wikilinksMerged = doc.getField("KB").stringValue();
            String[] wikiSplits = wikilinksMerged.split(" ");
            //no prod
            LOG.debug("Bag of concepts for the resource " + uri + ": ");
            for (String s : wikiSplits) {
                result.add(s);
                //no prod
                LOG.debug("* " + s);
            }
        }
        reader.close();
    } catch (Exception e) {
        LOG.error("[getBagOfConcepts] - EXCEPTION: ", e);
    }
    LOG.debug("[getBagOfConcepts] - END");
    return result;
}

---

From source file:it.polito.tellmefirst.lucene.IndexesUtil.java

License:Open Source License

public static ArrayList<String> getResidualBagOfConcepts(String uri, String lang) {
    LOG.debug("[getResidualBagOfConcepts] - BEGIN");
    ArrayList<String> result = new ArrayList<String>();
    try {//from  w  w w. j a va  2  s  . c om
        String residualKBPath = (lang.equals("it")) ? TMFVariables.RESIDUAL_KB_IT : TMFVariables.RESIDUAL_KB_EN;
        MMapDirectory directory = new MMapDirectory(new File(residualKBPath));
        IndexReader reader = IndexReader.open(directory, true);
        IndexSearcher is = new IndexSearcher(directory, true);
        Query q = new TermQuery(new Term("URI", uri));
        TopDocs hits = is.search(q, 1);
        is.close();
        if (hits.totalHits != 0) {
            int docId = hits.scoreDocs[0].doc;
            org.apache.lucene.document.Document doc = reader.document(docId);
            String wikilinksMerged = doc.getField("KB").stringValue();
            String[] wikiSplits = wikilinksMerged.split(" ");
            //no prod
            LOG.debug("Residual bag of concepts for the resource " + uri + ": ");
            for (String s : wikiSplits) {
                result.add(s);
                //no prod
                LOG.debug("* " + s);
            }
        }
        reader.close();
    } catch (Exception e) {
        LOG.error("[getResidualBagOfConcepts] - EXCEPTION: ", e);
    }
    LOG.debug("[getResidualBagOfConcepts] - END");
    return result;
}

---

From source file:it.polito.tellmefirst.lucene.KBIndexSearcher.java

License:Open Source License

/**
 * Get DBpedia concepts related to a specific URI from the Lucene Index. These DBpedia concepts appear as wikilink
 * more than once in the Wikipedia page identified by the URI.
 *
 * @param uri Input URI.//from   www .java  2s .  c o m
 *
 * In the previous versions of TellMeFirst, the getBagOfConcepts method take as input the
 * URI of a DBpedia resource (String) and the language parameter (String). We have decide to
 * modify the API in order to separate this module from the core of TellMeFirst.
 *
 * @since 3.0.0.0.
 */
public List<String> getBagOfConcepts(String uri) throws Exception {
    LOG.debug("[getBagOfConcepts]  BEGIN");
    List<String> result = new ArrayList<String>();

    try {
        MMapDirectory directory = new MMapDirectory(new File(kb));
        IndexReader reader = IndexReader.open(directory, true);
        IndexSearcher is = new IndexSearcher(directory, true);
        Query q = new TermQuery(new Term("URI", uri));
        TopDocs hits = is.search(q, 1);
        is.close();
        if (hits.totalHits != 0) {
            int docId = hits.scoreDocs[0].doc;
            org.apache.lucene.document.Document doc = reader.document(docId);
            String wikilinksMerged = doc.getField("KB").stringValue();
            String[] wikiSplits = wikilinksMerged.split(" ");
            LOG.debug("Bag of concepts for the resource " + uri + ": ");
            for (String s : wikiSplits) {
                result.add(s);
                LOG.debug("* " + s);
            }
        }
        reader.close();
    } catch (Exception e) {
        LOG.error("[getBagOfConcepts]  EXCEPTION: ", e);
        throw new Exception(e);
    }
    LOG.debug("[getBagOfConcepts]  END");
    return result;
}

---

From source file:it.polito.tellmefirst.lucene.KBIndexSearcher.java

License:Open Source License

/**
 * Get DBpedia concepts related to a specific URI from the Lucene Index. These DBpedia concepts appear as wikilink
 * once in the Wikipedia page identified by the URI.
 *
 * @param uri Input URI.//w  ww  .j  a  v  a  2  s .  c  o m
 *
 * In the previous versions of TellMeFirst, the getResidualBagOfConcepts method take as input the
 * URI of a DBpedia resource (String) and the language parameter (String). We have decide to
 * modify the API in order to separate this module from the core of TellMeFirst.
 *
 * @since 3.0.0.0.
 */
public ArrayList<String> getResidualBagOfConcepts(String uri) {
    LOG.debug("[getResidualBagOfConcepts] - BEGIN");
    ArrayList<String> result = new ArrayList<String>();
    try {
        MMapDirectory directory = new MMapDirectory(new File(residualKb));
        IndexReader reader = IndexReader.open(directory, true);
        IndexSearcher is = new IndexSearcher(directory, true);
        Query q = new TermQuery(new Term("URI", uri));
        TopDocs hits = is.search(q, 1);
        is.close();
        if (hits.totalHits != 0) {
            int docId = hits.scoreDocs[0].doc;
            org.apache.lucene.document.Document doc = reader.document(docId);
            String wikilinksMerged = doc.getField("KB").stringValue();
            String[] wikiSplits = wikilinksMerged.split(" ");
            //no prod
            LOG.debug("Residual bag of concepts for the resource " + uri + ": ");
            for (String s : wikiSplits) {
                result.add(s);
                //no prod
                LOG.debug("* " + s);
            }
        }
        reader.close();
    } catch (Exception e) {
        LOG.error("[getResidualBagOfConcepts] - EXCEPTION: ", e);
    }
    LOG.debug("[getResidualBagOfConcepts] - END");
    return result;
}

---

From source file:it.unibz.instasearch.indexing.SearchResultDoc.java

License:Open Source License

/**
 * /*from  ww  w .j av  a 2s . c  om*/
 * @return
 * @throws IOException
 */
private float[] getTermScoreVector() throws IOException {
    if (termScoreVector == null) {
        IndexReader reader = IndexReader.open(indexDir, true);

        if (termFreqVector == null)
            createFreqVect(reader);

        termScoreVector = createTermScoreVector(termFreqVector, reader);
        reader.close();
    }

    return termScoreVector;
}

---

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