Examples of org.apache.derby.iapi.services.daemon.IndexStatisticsDaemon

Package org.apache.derby.iapi.services.daemon

Examples of org.apache.derby.iapi.services.daemon.IndexStatisticsDaemon

org.apache.derby.iapi.services.daemon.IndexStatisticsDaemon
Daemon acting as a coordinator for creating and updating index statistics.
There are two modes of operation:
- explicit - generates index statistics due to an explict request from the user. The entrypoint is runExplicitly.
- background - generates index statistics as a background task due to an event that has triggered a statistics update. The entrypoint is schedule.


                    // Schedule updates of any stale index statistics we may
                    // have detected when creating the plan.
                    TableDescriptor[] tds = qt.updateIndexStatisticsFor();
                    if (tds.length > 0) {
                        IndexStatisticsDaemon isd = lcc.getDataDictionary().
                            getIndexStatsRefresher(true);
                        if (isd != null) {
                            for (int i=0; i < tds.length; i++) {
                                isd.schedule(tds[i]);
                            }
                        }
                    }
                }
        catch (StandardException e)   // hold it, throw it

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                    // Schedule updates of any stale index statistics we may
                    // have detected when creating the plan.
                    TableDescriptor[] tds = qt.updateIndexStatisticsFor();
                    if (tds.length > 0) {
                        IndexStatisticsDaemon isd = lcc.getDataDictionary().
                            getIndexStatsRefresher(true);
                        if (isd != null) {
                            for (int i=0; i < tds.length; i++) {
                                isd.schedule(tds[i]);
                            }
                        }
                    }
                }
        catch (StandardException e)   // hold it, throw it

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                    // Schedule updates of any stale index statistics we may
                    // have detected when creating the plan.
                    TableDescriptor[] tds = qt.updateIndexStatisticsFor();
                    if (tds.length > 0) {
                        IndexStatisticsDaemon isd = lcc.getDataDictionary().
                            getIndexStatsRefresher(true);
                        if (isd != null) {
                            for (int i=0; i < tds.length; i++) {
                                isd.schedule(tds[i]);
                            }
                        }
                    }
                }
        catch (StandardException e)   // hold it, throw it

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                    // Schedule updates of any stale index statistics we may
                    // have detected when creating the plan.
                    TableDescriptor[] tds = qt.updateIndexStatisticsFor();
                    if (tds.length > 0) {
                        IndexStatisticsDaemon isd = lcc.getDataDictionary().
                            getIndexStatsRefresher(true);
                        if (isd != null) {
                            for (int i=0; i < tds.length; i++) {
                                isd.schedule(tds[i]);
                            }
                        }
                    }
                }
        catch (StandardException e)   // hold it, throw it

View Full Code Here


                    // Schedule updates of any stale index statistics we may
                    // have detected when creating the plan.
                    TableDescriptor[] tds = qt.updateIndexStatisticsFor();
                    if (tds.length > 0) {
                        IndexStatisticsDaemon isd = lcc.getDataDictionary().
                            getIndexStatsRefresher(true);
                        if (isd != null) {
                            for (int i=0; i < tds.length; i++) {
                                isd.schedule(tds[i]);
                            }
                        }
                    }
                }
        catch (StandardException e)   // hold it, throw it

View Full Code Here

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