Class RealScalarAggregateStatistics

java.lang.Object
org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
org.apache.derby.impl.sql.execute.rts.RealScalarAggregateStatistics
All Implemented Interfaces:
ResultSetStatistics, XPLAINable
Direct Known Subclasses:
RealDistinctScalarAggregateStatistics
public class RealScalarAggregateStatistics extends RealNoPutResultSetStatistics
ResultSetStatistics implemenation for ScalarAggregateResultSet.

  • Field Details

    • rowsInput

      public int rowsInput

    • indexKeyOptimization

      public boolean indexKeyOptimization

    • childResultSetStatistics

      public ResultSetStatistics childResultSetStatistics

  • Constructor Details

    • RealScalarAggregateStatistics

      public RealScalarAggregateStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, boolean indexKeyOptimization, int rowsInput, double optimizerEstimatedRowCount, double optimizerEstimatedCost, ResultSetStatistics childResultSetStatistics)

  • Method Details

    • getStatementExecutionPlanText

      public String getStatementExecutionPlanText(int depth)
      Return the statement execution plan as a String.
      Parameters:
      depth - Indentation level.
      Returns:
      String The statement execution plan as a String.

    • getScanStatisticsText

      public String getScanStatisticsText(String tableName, int depth)
      Return information on the scan nodes from the statement execution plan as a String.
      Parameters:
      tableName - if not NULL then print information for this table only
      depth - Indentation level.
      Returns:
      String The information on the scan nodes from the statement execution plan as a String.

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • getChildren

      public Vector<ResultSetStatistics> getChildren()
      Description copied from class: RealBasicNoPutResultSetStatistics
      Get the objects to be displayed when this tree object is expanded.

      The objects returned can be of any type, including addtional Inspectables.

      Overrides:
      getChildren in class RealBasicNoPutResultSetStatistics
      Returns:
      java.util.Vector A vector of objects.

    • getNodeName

      public String getNodeName()
      Format for display, a name for this node.
      Specified by:
      getNodeName in class RealBasicNoPutResultSetStatistics

    • accept

      public void accept(XPLAINVisitor visitor)
      Description copied from interface: XPLAINable
      This method gets called to let a visitor visit this XPLAINable object. The general contract is to implement pre-order, depth-first traversal to produce a predictable traversal behaviour.

    • getRSXplainType

      public String getRSXplainType()

    • getResultSetDescriptor

      public Object getResultSetDescriptor(Object rsID, Object parentID, Object scanID, Object sortID, Object stmtID, Object timingID)
      Specified by:
      getResultSetDescriptor in interface XPLAINable
      Overrides:
      getResultSetDescriptor in class RealBasicNoPutResultSetStatistics