Examples with RTCHashMap org.opennms.netmgt.rtc.datablock.RTCHashMap used on opensource projects

Example 1 with RTCHashMap

use of org.opennms.netmgt.rtc.datablock.RTCHashMap in project opennms by OpenNMS.

the class DataManager method afterPropertiesSet.

/**
 * Constructor. Parses categories from the categories.xml and populates them
 * with 'RTCNode' objects created from data read from the database (services
 * and outage tables)
 *
 * @exception SQLException
 *                if there is an error reading initial data from the
 *                database
 * @exception FilterParseException
 *                if a rule in the categories.xml was incorrect
 * @exception RTCException
 *                if the initialization/data reading does not go through
 * @throws org.xml.sax.SAXException if any.
 * @throws java.io.IOException if any.
 * @throws java.sql.SQLException if any.
 * @throws org.opennms.netmgt.filter.api.FilterParseException if any.
 * @throws org.opennms.netmgt.rtc.RTCException if any.
 */
@Override
public void afterPropertiesSet() throws Exception {
    // read the categories.xml to get all the categories
    m_categories = RTCUtils.createCategoriesMap();
    if (m_categories == null || m_categories.isEmpty()) {
        throw new RTCException("No categories found in categories.xml");
    }
    LOG.debug("Number of categories read: {}", m_categories.size());
    // create data holder
    m_map = new RTCHashMap(30000);
    m_transactionTemplate.execute(new TransactionCallbackWithoutResult() {

        @Override
        protected void doInTransactionWithoutResult(TransactionStatus arg0) {
            // Populate the nodes initially from the database
            try {
                populateNodesFromDB(null, null);
            } catch (FilterParseException e) {
                throw new IllegalStateException("Cannot load RTC data from the database: " + e.getMessage(), e);
            } catch (SQLException e) {
                throw new IllegalStateException("Cannot load RTC data from the database: " + e.getMessage(), e);
            } catch (RTCException e) {
                throw new IllegalStateException("Cannot load RTC data from the database: " + e.getMessage(), e);
            }
        }
    });
}