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OPENJPA-703: Use template for QueryStatistics. 

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@745123 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Pinaki Poddar 2009-02-17 15:41:28 +00:00
parent 2582d4de0b
commit 556e09b69f
4 changed files with 23 additions and 23 deletions
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6
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/kernel/PreparedQueryCacheImpl.java
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@ -57,7 +57,7 @@ public class PreparedQueryCacheImpl implements PreparedQueryCache {
// Key: Query identifier Value: Reason why excluded
private final Map<String, String> _uncachables;
private List<String> _exclusionPatterns;
private final QueryStatistics _stats;
private final QueryStatistics<String> _stats;
private ReentrantLock _lock = new ReentrantLock();
private Log _log;
private Localizer _loc = Localizer.forPackage(PreparedQueryCacheImpl.class);
@ -65,7 +65,7 @@ public class PreparedQueryCacheImpl implements PreparedQueryCache {
public PreparedQueryCacheImpl() {
_delegate = new HashMap<String, PreparedQuery>();
_uncachables = new HashMap<String, String>();
_stats = new QueryStatistics.Default();
_stats = new QueryStatistics.Default<String>();
}
public Boolean register(String id, Query query, FetchConfiguration hints) {
@ -264,7 +264,7 @@ public class PreparedQueryCacheImpl implements PreparedQueryCache {
}
}
public QueryStatistics getStatistics() {
public QueryStatistics<String> getStatistics() {
return _stats;
}

2
openjpa-kernel/src/main/java/org/apache/openjpa/kernel/PreparedQueryCache.java
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@ -188,5 +188,5 @@ public interface PreparedQueryCache extends Configurable {
/**
* Gets the simple statistics for executed queries.
*/
public QueryStatistics getStatistics();
public QueryStatistics<String> getStatistics();
}

36
openjpa-kernel/src/main/java/org/apache/openjpa/kernel/QueryStatistics.java
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@ -37,13 +37,13 @@ import java.util.Map;
* @author Pinaki Poddar
*
*/
public interface QueryStatistics extends Serializable {
public interface QueryStatistics<T> extends Serializable {
/**
* Record that the given query has been executed. The boolean parameter
* designates whether the executed query is a cached version.
*/
void recordExecution(String query, boolean cached);
void recordExecution(T query, boolean cached);
/**
* Gets number of total query execution since last reset.
@ -58,12 +58,12 @@ public interface QueryStatistics extends Serializable {
/**
* Gets number of executions for the given query since last reset.
*/
public long getExecutionCount(String query);
public long getExecutionCount(T query);
/**
* Gets number of executions for the given query since start.
*/
public long getTotalExecutionCount(String query);
public long getTotalExecutionCount(T query);
/**
* Gets number of total query execution that are cached since last reset.
@ -79,13 +79,13 @@ public interface QueryStatistics extends Serializable {
* Gets number of executions for the given query that are cached since
* last reset.
*/
public long getHitCount(String query);
public long getHitCount(T query);
/**
* Gets number of executions for the given query that are cached since
* start.
*/
public long getTotalHitCount(String query);
public long getTotalHitCount(T query);
/**
* Gets the time of last reset.
@ -111,12 +111,12 @@ public interface QueryStatistics extends Serializable {
* A default implementation.
*
*/
public static class Default implements QueryStatistics {
public static class Default<T> implements QueryStatistics<T> {
private static final int ARRAY_SIZE = 2;
private long[] astat = new long[ARRAY_SIZE];
private long[] stat = new long[ARRAY_SIZE];
private Map<String, long[]> stats = new HashMap<String, long[]>();
private Map<String, long[]> astats = new HashMap<String, long[]>();
private Map<T, long[]> stats = new HashMap<T, long[]>();
private Map<T, long[]> astats = new HashMap<T, long[]>();
private Date start = new Date();
private Date since = start;
@ -131,11 +131,11 @@ public interface QueryStatistics extends Serializable {
return astat[READ];
}
public long getExecutionCount(String query) {
public long getExecutionCount(T query) {
return getCount(stats, query, READ);
}
public long getTotalExecutionCount(String query) {
public long getTotalExecutionCount(T query) {
return getCount(astats, query, READ);
}
@ -147,15 +147,15 @@ public interface QueryStatistics extends Serializable {
return astat[HIT];
}
public long getHitCount(String query) {
public long getHitCount(T query) {
return getCount(stats, query, HIT);
}
public long getTotalHitCount(String query) {
public long getTotalHitCount(T query) {
return getCount(astats, query, HIT);
}
private long getCount(Map<String, long[]> target, String query, int i) {
private long getCount(Map<T, long[]> target, T query, int i) {
long[] row = target.get(query);
return (row == null) ? 0 : row[i];
}
@ -174,14 +174,14 @@ public interface QueryStatistics extends Serializable {
since = new Date();
}
private void addSample(String query, int index) {
private void addSample(T query, int index) {
stat[index]++;
astat[index]++;
addSample(stats, query, index);
addSample(astats, query, index);
}
private void addSample(Map<String, long[]> target, String query, int i) {
private void addSample(Map<T, long[]> target, T query, int i) {
long[] row = target.get(query);
if (row == null) {
row = new long[ARRAY_SIZE];
@ -190,7 +190,7 @@ public interface QueryStatistics extends Serializable {
target.put(query, row);
}
public void recordExecution(String query, boolean cached) {
public void recordExecution(T query, boolean cached) {
addSample(query, READ);
if (cached)
addSample(query, HIT);
@ -210,7 +210,7 @@ public interface QueryStatistics extends Serializable {
out.println("\tSince Start \tSince Reset \t\tQuery");
}
int i = 0;
for (String key : stats.keySet()) {
for (T key : stats.keySet()) {
i++;
long[] arow = astats.get(key);
if (since == start) {

2
openjpa-persistence/src/main/java/org/apache/openjpa/persistence/QueryImpl.java
View File

@ -587,7 +587,7 @@ public class QueryImpl implements OpenJPAQuerySPI, Serializable {
Boolean registered = cache.register(_id, _query, fetch);
boolean alreadyCached = (registered == null);
String lang = _query.getLanguage();
QueryStatistics stats = cache.getStatistics();
QueryStatistics<String> stats = cache.getStatistics();
if (alreadyCached && LANG_PREPARED_SQL.equals(lang)) {
PreparedQuery pq = _em.getPreparedQuery(_id);
if (pq.isInitialized()) {