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Code Issues Releases Wiki Activity

改进PreparedStatementCache

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git-svn-id: http://code.alibabatech.com/svn/druid/trunk@916 b9813039-fb51-4c41-a8b9-e21c2acb5095
This commit is contained in:
wenshao
2011-09-29 00:49:34 +00:00
parent 38fcc483f6
commit 0aafc4ab96
10 changed files with 170 additions and 114 deletions
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src/main/java/com/alibaba/druid/pool/PreparedStatementPool.java
+20 -9
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@@ -15,7 +15,8 @@
*/
package com.alibaba.druid.pool;
import java.sql.PreparedStatement;
import java.util.HashMap;
import java.util.Map;
import com.alibaba.druid.pool.PoolablePreparedStatement.PreparedStatementKey;
import com.alibaba.druid.util.LRUCache;
@@ -25,26 +26,36 @@ import com.alibaba.druid.util.LRUCache;
*/
public class PreparedStatementPool {
private final LRUCache<PreparedStatementKey, PreparedStatement> map;
private final Map<PreparedStatementKey, PreparedStatementHolder> map;
public PreparedStatementPool(int maxSize){
map = new LRUCache<PreparedStatementKey, PreparedStatement>(maxSize);
if (maxSize < 0) {
map = new HashMap<PreparedStatementKey, PreparedStatementHolder>(maxSize);
} else {
map = new LRUCache<PreparedStatementKey, PreparedStatementHolder>(maxSize);
}
}
public static enum MethodType {
M1, M2, M3, M4, M5, M6, Precall_1, Precall_2, Precall_3
}
public PreparedStatement get(PreparedStatementKey key) {
return map.remove(key);
public PreparedStatementHolder get(PreparedStatementKey key) {
PreparedStatementHolder holder = map.remove(key);
if (holder != null) {
holder.incrementReusedCount();
}
return holder;
}
public void put(PoolablePreparedStatement poolableStatement) {
PreparedStatementKey key = poolableStatement.getKey();
map.put(key, poolableStatement.getRawPreparedStatement());
public void put(PreparedStatementHolder holder) {
PreparedStatementKey key = holder.getKey();
map.put(key, holder);
}
public LRUCache<PreparedStatementKey, PreparedStatement> getMap() {
public Map<PreparedStatementKey, PreparedStatementHolder> getMap() {
return map;
}