Class RealHashTableStatistics
- java.lang.Object
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- org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
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- org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
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- org.apache.derby.impl.sql.execute.rts.RealHashTableStatistics
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- All Implemented Interfaces:
ResultSetStatistics
,XPLAINable
public class RealHashTableStatistics extends RealNoPutResultSetStatistics
ResultSetStatistics implemenation for HashTableResultSet.
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Field Summary
Fields Modifier and Type Field Description ResultSetStatistics
childResultSetStatistics
int[]
hashKeyColumns
int
hashtableSize
java.lang.String
isolationLevel
java.lang.String
nextQualifiers
FormatableProperties
scanProperties
ResultSetStatistics[]
subqueryTrackingArray
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Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
indent, resultSetNumber, sourceDepth, subIndent
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Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
closeTime, constructorTime, inspectDesc, inspectNum, inspectOverall, nextTime, numOpens, openTime, optimizerEstimatedCost, optimizerEstimatedRowCount, rowsFiltered, rowsSeen
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Constructor Summary
Constructors Constructor Description 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)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description 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()
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Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
initFormatInfo
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Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
dumpEstimatedCosts, dumpTimeStats, getChildren, getChildrenTime, getEstimatedRowCount, getNodeTime, getResultSetDescriptor, getResultSetTimingsDescriptor, getSortPropsDescriptor, getTotalTime
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Field Detail
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hashtableSize
public int hashtableSize
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hashKeyColumns
public int[] hashKeyColumns
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isolationLevel
public java.lang.String isolationLevel
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nextQualifiers
public java.lang.String nextQualifiers
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scanProperties
public FormatableProperties scanProperties
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childResultSetStatistics
public ResultSetStatistics childResultSetStatistics
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subqueryTrackingArray
public ResultSetStatistics[] subqueryTrackingArray
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Constructor Detail
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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)
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Method Detail
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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.
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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.
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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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 classRealBasicNoPutResultSetStatistics
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getNodeName
public java.lang.String getNodeName()
Format for display, a name for this node.- Specified by:
getNodeName
in classRealBasicNoPutResultSetStatistics
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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.
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getRSXplainType
public java.lang.String getRSXplainType()
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getRSXplainDetails
public java.lang.String getRSXplainDetails()
- Specified by:
getRSXplainDetails
in interfaceXPLAINable
- Overrides:
getRSXplainDetails
in classRealBasicNoPutResultSetStatistics
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getScanPropsDescriptor
public java.lang.Object getScanPropsDescriptor(java.lang.Object scanPropsID)
- Specified by:
getScanPropsDescriptor
in interfaceXPLAINable
- Overrides:
getScanPropsDescriptor
in classRealBasicNoPutResultSetStatistics
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