io.permazen.kv.raft.fallback.OverwriteMergeStrategy

public class OverwriteMergeStrategy extends Object implements MergeStrategy

MergeStrategy that completely overwrites the destination database with the content of the source database.

Constructor Details
- OverwriteMergeStrategy
  
  public OverwriteMergeStrategy()
Method Details
- 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.
  
  Parameters:
  
  src - database to copy from
  
  dst - database to copy src onto
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object

Class OverwriteMergeStrategy

Constructor Summary