org.apache.derby.impl.sql.execute.rts
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:
- XPLAINable, ResultSetStatistics
- Direct Known Subclasses:
- RealDistinctScanStatistics
public class RealHashScanStatistics
- extends RealNoPutResultSetStatistics
ResultSetStatistics implemenation for HashScanResultSet.
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 |
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)
|
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.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()
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
isConstraint
public boolean isConstraint
hashtableSize
public int hashtableSize
hashKeyColumns
public int[] hashKeyColumns
isolationLevel
public java.lang.String isolationLevel
lockString
public java.lang.String lockString
tableName
public java.lang.String tableName
indexName
public java.lang.String indexName
nextQualifiers
public java.lang.String nextQualifiers
scanQualifiers
public java.lang.String scanQualifiers
startPosition
public java.lang.String startPosition
stopPosition
public java.lang.String stopPosition
scanProperties
public FormatableProperties scanProperties
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)
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
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 interface XPLAINable
- Overrides:
getResultSetDescriptor
in class RealBasicNoPutResultSetStatistics
Apache Derby V10.6 Internals - Copyright © 2004,2007 The Apache Software Foundation. All Rights Reserved.