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java.lang.Objectorg.apache.openjpa.kernel.QueryStatistics.Default<T>
public static class QueryStatistics.Default<T>
A default implementation. Maintains statistics for only a fixed number of queries. Statistical counts are approximate and not exact (to keep thread synchorization overhead low).
| Nested Class Summary | 
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| Nested classes/interfaces inherited from interface org.apache.openjpa.kernel.QueryStatistics | 
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| QueryStatistics.Default<T>, QueryStatistics.None<T> | 
| Constructor Summary | |
|---|---|
| QueryStatistics.Default() | |
| Method Summary | |
|---|---|
|  void | clear()Clears all statistics accumulated since start. | 
|  void | dump(PrintStream out)Dumps on the given output stream. | 
|  long | getEvictionCount()Gets number of total query evictions since last reset. | 
|  long | getExecutionCount()Gets number of total query execution since last reset. | 
|  long | getExecutionCount(T query)Gets number of executions for the given query since last reset. | 
|  long | getHitCount()Gets number of total query execution that are cached since last reset. | 
|  long | getHitCount(T query)Gets number of executions for the given query that are cached since last reset. | 
|  long | getTotalEvictionCount()Gets number of total query evictions since start. | 
|  long | getTotalExecutionCount()Gets number of total query execution since start. | 
|  long | getTotalExecutionCount(T query)Gets number of executions for the given query since start. | 
|  long | getTotalHitCount()Gets number of total query execution that are cached since start. | 
|  long | getTotalHitCount(T query)Gets number of executions for the given query that are cached since start. | 
|  Set<T> | keys()Gets all the identifier keys for the cached queries. | 
| (package private)  long | pct(long per,
    long cent) | 
|  void | recordEviction(T query)Record that the given query has been evicted. | 
|  void | recordExecution(T query)Record that the given query has been executed. | 
|  void | reset()Clears all statistics accumulated since last reset. | 
|  Date | since()Gets the time of last reset. | 
|  Date | start()Gets the time of start. | 
| (package private)  String | toString(long[] row) | 
| Methods inherited from class java.lang.Object | 
|---|
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
| Constructor Detail | 
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public QueryStatistics.Default()
| Method Detail | 
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public Set<T> keys()
QueryStatistics
keys in interface QueryStatistics<T>public long getExecutionCount()
QueryStatistics
getExecutionCount in interface QueryStatistics<T>public long getTotalExecutionCount()
QueryStatistics
getTotalExecutionCount in interface QueryStatistics<T>public long getExecutionCount(T query)
QueryStatistics
getExecutionCount in interface QueryStatistics<T>public long getTotalExecutionCount(T query)
QueryStatistics
getTotalExecutionCount in interface QueryStatistics<T>public long getHitCount()
QueryStatistics
getHitCount in interface QueryStatistics<T>public long getTotalHitCount()
QueryStatistics
getTotalHitCount in interface QueryStatistics<T>public long getHitCount(T query)
QueryStatistics
getHitCount in interface QueryStatistics<T>public long getTotalHitCount(T query)
QueryStatistics
getTotalHitCount in interface QueryStatistics<T>public Date since()
QueryStatistics
since in interface QueryStatistics<T>public Date start()
QueryStatistics
start in interface QueryStatistics<T>public void reset()
QueryStatistics
reset in interface QueryStatistics<T>public void clear()
QueryStatistics
clear in interface QueryStatistics<T>public void recordExecution(T query)
QueryStatistics
recordExecution in interface QueryStatistics<T>public void recordEviction(T query)
QueryStatistics
recordEviction in interface QueryStatistics<T>public void dump(PrintStream out)
QueryStatistics
dump in interface QueryStatistics<T>
long pct(long per,
         long cent)
String toString(long[] row)
public long getEvictionCount()
QueryStatistics
getEvictionCount in interface QueryStatistics<T>public long getTotalEvictionCount()
QueryStatistics
getTotalEvictionCount in interface QueryStatistics<T>| 
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