Examples with TableStoreCloseableRowIterator org.knime.core.data.container.storage.AbstractTableStoreReader.TableStoreCloseableRowIterator used on opensource projects

Example 1 with TableStoreCloseableRowIterator

use of org.knime.core.data.container.storage.AbstractTableStoreReader.TableStoreCloseableRowIterator in project knime-core by knime.

the class Buffer method iterator.

/**
 * Get a new <code>RowIterator</code>, traversing all rows that have been added. Calling this method makes only
 * sense when the buffer has been closed. However, no check is done (as it is available to package classes only).
 *
 * @return a new Iterator over all rows.
 */
synchronized CloseableRowIterator iterator() {
    if (usesOutFile()) {
        if (m_useBackIntoMemoryIterator) {
            // the order of the following lines is very important!
            m_useBackIntoMemoryIterator = false;
            m_backIntoMemoryIterator = iterator();
            // we never store more than 2^31 rows in memory, therefore it's safe to cast to int
            m_list = new ArrayList<BlobSupportDataRow>((int) size());
            return new FromListIterator();
        }
        try {
            LOGGER.debug("Opening input stream on file \"" + m_binFile.getAbsolutePath() + "\", " + m_nrOpenInputStreams + " open streams");
            TableStoreCloseableRowIterator iterator = m_outputReader.iterator();
            iterator.setBuffer(this);
            m_nrOpenInputStreams.incrementAndGet();
            synchronized (m_openIteratorSet) {
                m_openIteratorSet.put(iterator, DUMMY);
            }
            return iterator;
        } catch (IOException ioe) {
            StringBuilder b = new StringBuilder("Cannot read file \"");
            b.append(m_binFile != null ? m_binFile.getName() : "<unknown>");
            b.append("\"");
            checkAndReportOpenFiles(ioe);
            throw new RuntimeException(b.toString(), ioe);
        }
    } else {
        return new FromListIterator();
    }
}