Class RealHashScanStatistics
- 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.RealHashScanStatistics
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- All Implemented Interfaces:
ResultSetStatistics
,XPLAINable
- Direct Known Subclasses:
RealDistinctScanStatistics
public class RealHashScanStatistics extends RealNoPutResultSetStatistics
ResultSetStatistics implemenation for HashScanResultSet.
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Field Summary
Fields Modifier and Type Field Description int[]
hashKeyColumns
int
hashtableSize
java.lang.String
indexName
boolean
isConstraint
java.lang.String
isolationLevel
java.lang.String
lockString
java.lang.String
nextQualifiers
FormatableProperties
scanProperties
java.lang.String
scanQualifiers
java.lang.String
startPosition
java.lang.String
stopPosition
java.lang.String
tableName
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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 RealHashScanStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, java.lang.String tableName, java.lang.String indexName, boolean isConstraint, int hashtableSize, int[] hashKeyColumns, java.lang.String scanQualifiers, java.lang.String nextQualifiers, java.util.Properties scanProperties, java.lang.String startPosition, java.lang.String stopPosition, java.lang.String isolationLevel, java.lang.String lockString, double optimizerEstimatedRowCount, double optimizerEstimatedCost)
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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.Object
getResultSetDescriptor(java.lang.Object rsID, java.lang.Object parentID, java.lang.Object scanID, java.lang.Object sortID, java.lang.Object stmtID, java.lang.Object timingID)
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, getResultSetTimingsDescriptor, getSortPropsDescriptor, getTotalTime
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Field Detail
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isConstraint
public boolean isConstraint
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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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lockString
public java.lang.String lockString
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tableName
public java.lang.String tableName
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indexName
public java.lang.String indexName
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nextQualifiers
public java.lang.String nextQualifiers
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scanQualifiers
public java.lang.String scanQualifiers
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startPosition
public java.lang.String startPosition
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stopPosition
public java.lang.String stopPosition
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scanProperties
public FormatableProperties scanProperties
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Constructor Detail
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RealHashScanStatistics
public RealHashScanStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, java.lang.String tableName, java.lang.String indexName, boolean isConstraint, int hashtableSize, int[] hashKeyColumns, java.lang.String scanQualifiers, java.lang.String nextQualifiers, java.util.Properties scanProperties, java.lang.String startPosition, java.lang.String stopPosition, java.lang.String isolationLevel, java.lang.String lockString, double optimizerEstimatedRowCount, double optimizerEstimatedCost)
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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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getResultSetDescriptor
public java.lang.Object getResultSetDescriptor(java.lang.Object rsID, java.lang.Object parentID, java.lang.Object scanID, java.lang.Object sortID, java.lang.Object stmtID, java.lang.Object timingID)
- Specified by:
getResultSetDescriptor
in interfaceXPLAINable
- Overrides:
getResultSetDescriptor
in classRealBasicNoPutResultSetStatistics
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