Package org.apache.jackrabbit.oak.plugins.index.importer

Class AsyncLaneSwitcher

java.lang.Object
org.apache.jackrabbit.oak.plugins.index.importer.AsyncLaneSwitcher
public class AsyncLaneSwitcher extends Object
Coordinates the switching of indexing lane for indexes which are to be imported. Its support idempotent operation i.e. if an indexer is switched to temp lane then a repeat of same operation would be no op.

  • Constructor Details

    • AsyncLaneSwitcher

      public AsyncLaneSwitcher()

  • Method Details

    • switchLane

      public static void switchLane(NodeBuilder idxBuilder, String laneName)
      Make a copy of current async value and replace it with one required for offline reindexing. The switch lane operation can be safely repeated: if the index lane is already set to the target lane, the call is a no-op.

      If async-previous is present but async does not already equal laneName, the property is treated as stale (e.g. copied from a running system into a user-provided index definition). In that case the stale value is discarded and the switch proceeds normally so the index is not silently skipped during reindexing. If async-previous is missing, then the switch to the temporary lane required for offline reindexing has not yet happened and will be carried out.

    • isLaneSwitched

      public static boolean isLaneSwitched(NodeBuilder idxBuilder)

    • getTempLaneName

      public static String getTempLaneName(String laneName)

    • revertSwitch

      public static void revertSwitch(NodeBuilder idxBuilder, String indexPath)

    • isNone

      public static boolean isNone(PropertyState previousAsync)