Class RealHashScanStatistics
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.RealHashScanStatistics
- All Implemented Interfaces:
ResultSetStatistics
,XPLAINable
- Direct Known Subclasses:
RealDistinctScanStatistics
ResultSetStatistics implemenation for HashScanResultSet.
-
Field Summary
FieldsModifier and TypeFieldDescriptionint[]
int
boolean
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
ConstructorsConstructorDescriptionRealHashScanStatistics
(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, String tableName, String indexName, boolean isConstraint, int hashtableSize, int[] hashKeyColumns, String scanQualifiers, String nextQualifiers, Properties scanProperties, String startPosition, String stopPosition, String isolationLevel, String lockString, double optimizerEstimatedRowCount, double optimizerEstimatedCost) -
Method Summary
Modifier and TypeMethodDescriptionvoid
accept
(XPLAINVisitor visitor) This method gets called to let a visitor visit this XPLAINable object.Format for display, a name for this node.If this node is on a database item (like a table or an index), then provide a string that describes the on item.getResultSetDescriptor
(Object rsID, Object parentID, Object scanID, Object sortID, Object stmtID, Object timingID) getScanPropsDescriptor
(Object scanPropsID) getScanStatisticsText
(String tableName, int depth) Return information on the scan nodes from the statement execution plan as a String.getStatementExecutionPlanText
(int depth) Return the statement execution plan as a 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, getResultSetTimingsDescriptor, getSortPropsDescriptor, getTotalTime
-
Field Details
-
isConstraint
public boolean isConstraint -
hashtableSize
public int hashtableSize -
hashKeyColumns
public int[] hashKeyColumns -
isolationLevel
-
lockString
-
tableName
-
indexName
-
nextQualifiers
-
scanQualifiers
-
startPosition
-
stopPosition
-
scanProperties
-
-
Constructor Details
-
RealHashScanStatistics
public RealHashScanStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, String tableName, String indexName, boolean isConstraint, int hashtableSize, int[] hashKeyColumns, String scanQualifiers, String nextQualifiers, Properties scanProperties, String startPosition, String stopPosition, String isolationLevel, String lockString, double optimizerEstimatedRowCount, double optimizerEstimatedCost)
-
-
Method Details
-
getStatementExecutionPlanText
Return the statement execution plan as a String.- Parameters:
depth
- Indentation level.- Returns:
- String The statement executio plan as a String.
-
getScanStatisticsText
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 onlydepth
- Indentation level.- Returns:
- String The information on the scan nodes from the statement execution plan as a String.
-
toString
-
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 classRealBasicNoPutResultSetStatistics
-
getNodeName
Format for display, a name for this node.- Specified by:
getNodeName
in classRealBasicNoPutResultSetStatistics
-
accept
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
-
getRSXplainDetails
- Specified by:
getRSXplainDetails
in interfaceXPLAINable
- Overrides:
getRSXplainDetails
in classRealBasicNoPutResultSetStatistics
-
getScanPropsDescriptor
- Specified by:
getScanPropsDescriptor
in interfaceXPLAINable
- Overrides:
getScanPropsDescriptor
in classRealBasicNoPutResultSetStatistics
-
getResultSetDescriptor
public Object getResultSetDescriptor(Object rsID, Object parentID, Object scanID, Object sortID, Object stmtID, Object timingID) - Specified by:
getResultSetDescriptor
in interfaceXPLAINable
- Overrides:
getResultSetDescriptor
in classRealBasicNoPutResultSetStatistics
-