org.apache.derby.impl.sql.execute.rts
Class RealHashTableStatistics

java.lang.Object
  extended by org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
      extended by org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
          extended by org.apache.derby.impl.sql.execute.rts.RealHashTableStatistics
All Implemented Interfaces:
XPLAINable, ResultSetStatistics

public class RealHashTableStatistics
extends RealNoPutResultSetStatistics

ResultSetStatistics implemenation for HashTableResultSet.


Field Summary
 ResultSetStatistics childResultSetStatistics
           
 int[] hashKeyColumns
           
 int hashtableSize
           
 java.lang.String isolationLevel
           
 java.lang.String nextQualifiers
           
 FormatableProperties scanProperties
           
 ResultSetStatistics[] subqueryTrackingArray
           
 
Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
indent, resultSetNumber, sourceDepth, subIndent
 
Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
closeTime, constructorTime, inspectDesc, inspectNum, inspectOverall, nextTime, numOpens, openTime, optimizerEstimatedCost, optimizerEstimatedRowCount, rowsFiltered, rowsSeen
 
Constructor Summary
RealHashTableStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, int hashtableSize, int[] hashKeyColumns, java.lang.String nextQualifiers, java.util.Properties scanProperties, double optimizerEstimatedRowCount, double optimizerEstimatedCost, ResultSetStatistics[] subqueryTrackingArray, ResultSetStatistics childResultSetStatistics)
           
 
Method Summary
 void accept(XPLAINVisitor visitor)
          This method gets called to let a visitor visit this XPLAINable object.
 java.lang.String getNodeName()
          Format for display, a name for this node.
 java.lang.String getNodeOn()
          If this node is on a database item (like a table or an index), then provide a string that describes the on item.
 java.lang.String getRSXplainDetails()
           
 java.lang.String getRSXplainType()
           
 java.lang.Object getScanPropsDescriptor(java.lang.Object scanPropsID)
           
 java.lang.String getScanStatisticsText(java.lang.String tableName, int depth)
          Return information on the scan nodes from the statement execution plan as a String.
 java.lang.String getStatementExecutionPlanText(int depth)
          Return the statement execution plan as a String.
 java.lang.String toString()
           
 
Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
initFormatInfo
 
Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
dumpEstimatedCosts, dumpTimeStats, getChildren, getChildrenTime, getEstimatedRowCount, getNodeTime, getResultSetDescriptor, getResultSetTimingsDescriptor, getSortPropsDescriptor, getTotalTime
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

hashtableSize

public int hashtableSize

hashKeyColumns

public int[] hashKeyColumns

isolationLevel

public java.lang.String isolationLevel

nextQualifiers

public java.lang.String nextQualifiers

scanProperties

public FormatableProperties scanProperties

childResultSetStatistics

public ResultSetStatistics childResultSetStatistics

subqueryTrackingArray

public ResultSetStatistics[] subqueryTrackingArray
Constructor Detail

RealHashTableStatistics

public RealHashTableStatistics(int numOpens,
                               int rowsSeen,
                               int rowsFiltered,
                               long constructorTime,
                               long openTime,
                               long nextTime,
                               long closeTime,
                               int resultSetNumber,
                               int hashtableSize,
                               int[] hashKeyColumns,
                               java.lang.String nextQualifiers,
                               java.util.Properties scanProperties,
                               double optimizerEstimatedRowCount,
                               double optimizerEstimatedCost,
                               ResultSetStatistics[] subqueryTrackingArray,
                               ResultSetStatistics childResultSetStatistics)
Method Detail

getStatementExecutionPlanText

public java.lang.String getStatementExecutionPlanText(int depth)
Return the statement execution plan as a String.

Parameters:
depth - Indentation level.
Returns:
String The statement executio plan as a String.

getScanStatisticsText

public java.lang.String getScanStatisticsText(java.lang.String tableName,
                                              int depth)
Return information on the scan nodes from the statement execution plan as a String.

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

toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object

getNodeOn

public java.lang.String getNodeOn()
If this node is on a database item (like a table or an index), then provide a string that describes the on item.

Overrides:
getNodeOn in class RealBasicNoPutResultSetStatistics

getNodeName

public java.lang.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 java.lang.String getRSXplainType()

getRSXplainDetails

public java.lang.String getRSXplainDetails()
Specified by:
getRSXplainDetails in interface XPLAINable
Overrides:
getRSXplainDetails in class RealBasicNoPutResultSetStatistics

getScanPropsDescriptor

public java.lang.Object getScanPropsDescriptor(java.lang.Object scanPropsID)
Specified by:
getScanPropsDescriptor in interface XPLAINable
Overrides:
getScanPropsDescriptor in class RealBasicNoPutResultSetStatistics

Built on Thu 2010-12-23 20:49:13+0000, from revision ???

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