Constructor Detail

• OverwriteMergeStrategy

  public OverwriteMergeStrategy()

Method Detail

• mergeAndCommit

  public void mergeAndCommit(KVTransaction src,
                    KVTransaction dst,
                    Date lastActiveTime)

  Description copied from interface: MergeStrategy
  Merge data from the source database being migrated away from into the destination database being migrated to.

  This method should commit() both transactions before returning; src should be committed before dst.

  If an exception is thrown, rollback() will be invoked on both transactions (a rollback() on an already-commit()'ed transaction does nothing).

  Specified by:

  mergeAndCommit in interface MergeStrategy

  Parameters:

  src - read-only view into the database being migrated away from

  dst - read-write transaction open on the database being migrated to

  lastActiveTime - time that dst was last active, or null if never

• overwrite

  protected void overwrite(KVTransaction src,
               KVTransaction dst)

  Overwrite one key/value database with another.

  This method deletes every key/value pair in dst, and then copy every key/value pair in src into dst.

  Does not commit src or dst.

• toString

  public String toString()

  Overrides:

  toString in class Object