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OPENJPA-1566: Allow access to keys of the statistics.

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git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@922311 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Pinaki Poddar 2010-03-12 16:14:47 +00:00
parent f04031edc1
commit 732ff354b3
1 changed files with 12 additions and 0 deletions
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12
openjpa-kernel/src/main/java/org/apache/openjpa/kernel/QueryStatistics.java
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@ -23,6 +23,7 @@ import java.io.Serializable;
import java.util.Date; import java.util.Date;
import java.util.HashMap; import java.util.HashMap;
import java.util.Map; import java.util.Map;
import java.util.Set;
/** /**
* Records query execution statistics. * Records query execution statistics.
@ -38,6 +39,11 @@ import java.util.Map;
* *
*/ */
public interface QueryStatistics<T> extends Serializable { public interface QueryStatistics<T> extends Serializable {
/**
* Gets all the identifier keys for the cached queries.
*/
public Set<T> keys();
/** /**
* Record that the given query has been executed. * Record that the given query has been executed.
@ -126,6 +132,10 @@ public interface QueryStatistics<T> extends Serializable {
private Map<T, long[]> astats = new HashMap<T, long[]>(); private Map<T, long[]> astats = new HashMap<T, long[]>();
private Date start = new Date(); private Date start = new Date();
private Date since = start; private Date since = start;
public Set<T> keys() {
return stats.keySet();
}
public long getExecutionCount() { public long getExecutionCount() {
return stat[READ]; return stat[READ];
@ -205,6 +215,8 @@ public interface QueryStatistics<T> extends Serializable {
} }
public void recordExecution(T query) { public void recordExecution(T query) {
if (query == null)
return;
boolean cached = (astats.containsKey(query)); boolean cached = (astats.containsKey(query));
addSample(query, READ); addSample(query, READ);
if (cached) if (cached)