#vulnerable code 
                                @Override
    public void indexDocument(Queue<CodeIndexDocument> documentQueue) throws IOException {
        // Need to connect to each sphinx config eventually
        SphinxSearchConfig sphinxSearchConfig = new SphinxSearchConfig();
        Connection connection = null;
        PreparedStatement stmt = null;

        try {
            connection = sphinxSearchConfig.getConnection();
        } catch (SQLException ex) {
            return;
        }
        finally {
            this.helpers.closeQuietly(connection);
        }

        try {
//            for (SearchcodeCodeResult codeResult: codeResultList) {
//                try {
//                    stmt = connection.prepareStatement("REPLACE INTO codesearchrt1 VALUES(?,?,?,?,?,?,?,?,?)");
//
//                    stmt.setInt(1, codeResult.getId());
//                    stmt.setString(2, CodeIndexer.runCodeIndexPipeline(Singleton.getSearchCodeLib(), codeResult.getContent()));
//                    stmt.setString(3, codeResult.getFilename());
//                    stmt.setInt(4, codeResult.getRepoid());
//                    stmt.setInt(5, codeResult.getFiletypeid());
//                    stmt.setInt(6, codeResult.getLangugeid());
//                    stmt.setInt(7, codeResult.getSourceid());
//                    stmt.setInt(8, 0); //CCR
//                    stmt.setInt(9, codeResult.getLinescount());
//                    stmt.execute();
//                } catch (SQLException ex) {
//                    Singleton.getLogger().warning(ex.toString());
//                }
//            }
        }
        finally {
            this.helpers.closeQuietly(stmt);
            this.helpers.closeQuietly(connection);
        }
    } 
                            #location 38 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Override
    public void indexDocument(Queue<CodeIndexDocument> documentQueue) throws IOException {
        // Need to connect to each sphinx config eventually
        SphinxSearchConfig sphinxSearchConfig = new SphinxSearchConfig();
        Connection connection = null;
        PreparedStatement stmt = null;

        try {
            connection = sphinxSearchConfig.getConnection();
        } catch (SQLException ignored) { }


        CodeIndexDocument codeIndexDocument = documentQueue.poll();
        List<CodeIndexDocument> codeIndexDocumentList = new ArrayList<>();

        while (codeIndexDocument != null) {
            codeIndexDocumentList.add(codeIndexDocument);
            codeIndexDocument = documentQueue.poll();
        }


        try {
            for (CodeIndexDocument codeResult: codeIndexDocumentList) {
                try {
                    stmt = connection.prepareStatement("REPLACE INTO codesearchrt1 VALUES(?,?,?,?,?,?,?,?,?)");

//                    stmt.setInt(1, codeResult.getId());
//                    stmt.setString(2, CodeIndexer.runCodeIndexPipeline(Singleton.getSearchCodeLib(), codeResult.getContent()));
                    stmt.setString(3, codeResult.getFileName());
//                    stmt.setInt(4, codeResult.getRepoid());
//                    stmt.setInt(5, codeResult.getFiletypeid());
//                    stmt.setInt(6, codeResult.getLangugeid());
//                    stmt.setInt(7, codeResult.getSourceid());
//                    stmt.setInt(8, 0); //CCR
//                    stmt.setInt(9, codeResult.getLinescount());
                    stmt.execute();
                } catch (SQLException ex) {
                    Singleton.getLogger().warning(ex.toString());
                }
            }
        }
        finally {
            this.helpers.closeQuietly(stmt);
            this.helpers.closeQuietly(connection);
        }
    }