Class KeepOnlyLastCommitDeletionPolicy

java.lang.Object
org.apache.lucene.index.IndexDeletionPolicy
org.apache.lucene.index.KeepOnlyLastCommitDeletionPolicy

public final class KeepOnlyLastCommitDeletionPolicy extends IndexDeletionPolicy
This IndexDeletionPolicy implementation that keeps only the most recent commit and immediately removes all prior commits after a new commit is done. This is the default deletion policy.
  • Constructor Details

    • KeepOnlyLastCommitDeletionPolicy

      public KeepOnlyLastCommitDeletionPolicy()
      Sole constructor.
  • Method Details

    • onInit

      public void onInit(List<? extends IndexCommit> commits)
      Deletes all commits except the most recent one.
      Specified by:
      onInit in class IndexDeletionPolicy
      Parameters:
      commits - List of current point-in-time commits, sorted by age (the 0th one is the oldest commit). Note that for a new index this method is invoked with an empty list.
    • onCommit

      public void onCommit(List<? extends IndexCommit> commits)
      Deletes all commits except the most recent one.
      Specified by:
      onCommit in class IndexDeletionPolicy
      Parameters:
      commits - List of IndexCommit, sorted by age (the 0th one is the oldest commit).