Field Detail

• sort

  private MergeSort sort

  The sort this inserter is for.

• tran

  private TransactionManager tran

  The transaction this inserter is in.

• mergeRuns

  private java.util.Vector<java.lang.Long> mergeRuns

  A vector of the conglomerate ids of the merge runs.

• sortBuffer

  private SortBuffer sortBuffer

  An in-memory ordered set that is used to sort rows before they're sent to merge runs.

• beginMemoryUsage

  private long beginMemoryUsage

  Information about memory usage to dynamically tune the in-memory sort buffer size.

• avoidMergeRun

  private boolean avoidMergeRun

• runSize

  private int runSize

• totalRunSize

  private int totalRunSize

• stat_sortType

  java.lang.String stat_sortType

• stat_numRowsInput

  int stat_numRowsInput

• stat_numRowsOutput

  int stat_numRowsOutput

• stat_numMergeRuns

  int stat_numMergeRuns

• stat_mergeRunsSize

  java.util.Vector<java.lang.Integer> stat_mergeRunsSize

Constructor Detail

• MergeInserter

  MergeInserter()

Method Detail

• insert

  public void insert​(DataValueDescriptor[] row)
              throws StandardException

  Insert a row into the sort.

  Specified by:

  insert in interface SortController

  Parameters:

  row - The row to insert into the SortController. The stored representations of the row's columns are copied into a new row somewhere in the sort.

  Throws:

  StandardException - Standard exception policy.

  See Also:

  SortController.insert(org.apache.derby.iapi.types.DataValueDescriptor[])

• completedInserts

  public void completedInserts()

  Called when the caller has completed inserting rows into the sorter.

  Specified by:

  completedInserts in interface SortController

  See Also:

  SortController.completedInserts()

• getSortInfo

  public SortInfo getSortInfo()
                       throws StandardException

  Return SortInfo object which contains information about the current sort.

  Specified by:

  getSortInfo in interface SortController

  Returns:

  The SortInfo object which contains info about current sort.

  Throws:

  StandardException - Standard exception policy.

  See Also:

  SortInfo

• initialize

  boolean initialize​(MergeSort sort,
                     TransactionManager tran)

  Initialize this inserter.

  Returns:

  true if initialization was successful