Class QueryStatisticsData

java.lang.Object

org.h2.engine.QueryStatisticsData

public class QueryStatisticsData
extends Object

Maintains query statistics.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	QueryStatisticsData.QueryEntry	The collected statistics for one query.

Field Summary

Fields

Modifier and Type	Field	Description
private final HashMap<String, QueryStatisticsData.QueryEntry>	map
private int	maxQueryEntries
private static final Comparator<QueryStatisticsData.QueryEntry>	QUERY_ENTRY_COMPARATOR

Constructor Summary

Constructors

Constructor	Description
QueryStatisticsData(int maxQueryEntries)

Method Summary

Modifier and Type	Method	Description
List<QueryStatisticsData.QueryEntry>	getQueries()
void	setMaxQueryEntries(int maxQueryEntries)
void	update(String sqlStatement, long executionTimeNanos, long rowCount)	Update query statistics.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

QUERY_ENTRY_COMPARATOR

private static final Comparator<QueryStatisticsData.QueryEntry> QUERY_ENTRY_COMPARATOR

map

private final HashMap<String, QueryStatisticsData.QueryEntry> map

maxQueryEntries

private int maxQueryEntries

Constructor Details

QueryStatisticsData

public QueryStatisticsData(int maxQueryEntries)

Method Details

setMaxQueryEntries

public void setMaxQueryEntries(int maxQueryEntries)

getQueries

public List<QueryStatisticsData.QueryEntry> getQueries()

update

public void update(String sqlStatement,
 long executionTimeNanos,
 long rowCount)

Update query statistics.

Parameters:

sqlStatement - the statement being executed

executionTimeNanos - the time in nanoseconds the query/update took to execute

rowCount - the query or update row count