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仿照JBOSS实现PreparedStatementCache

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git-svn-id: http://code.alibabatech.com/svn/druid/trunk@912 b9813039-fb51-4c41-a8b9-e21c2acb5095
This commit is contained in:
wenshao
2011-09-28 14:20:00 +00:00
parent a7f4299a4b
commit 9dff400ff6
16 changed files with 832 additions and 205 deletions
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src/main/java/com/alibaba/druid/pool/PreparedStatementPool.java
+6 -31
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@@ -15,9 +15,8 @@
*/
package com.alibaba.druid.pool;
import java.util.ArrayList;
import java.sql.PreparedStatement;
import java.util.HashMap;
import java.util.List;
import com.alibaba.druid.pool.PoolablePreparedStatement.PreparedStatementKey;
@@ -26,46 +25,22 @@ import com.alibaba.druid.pool.PoolablePreparedStatement.PreparedStatementKey;
*/
public class PreparedStatementPool {
private HashMap<PreparedStatementKey, List<PoolablePreparedStatement>> map = new HashMap<PreparedStatementKey, List<PoolablePreparedStatement>>();
private HashMap<PreparedStatementKey, PreparedStatement> map = new HashMap<PreparedStatementKey, PreparedStatement>();
public static enum MethodType {
M1, M2, M3, M4, M5, M6, Precall_1, Precall_2, Precall_3
}
public PoolablePreparedStatement get(PreparedStatementKey key) {
List<PoolablePreparedStatement> list = map.get(key);
if (list == null) {
list = new ArrayList<PoolablePreparedStatement>();
map.put(key, list);
return null;
}
int size = list.size();
if (size == 0) {
return null;
}
PoolablePreparedStatement last = list.remove(size - 1);
return last;
public PreparedStatement get(PreparedStatementKey key) {
return map.remove(key);
}
public void put(PoolablePreparedStatement poolableStatement) {
PreparedStatementKey key = poolableStatement.getKey();
List<PoolablePreparedStatement> list = map.get(key);
if (list == null) {
list = new ArrayList<PoolablePreparedStatement>();
map.put(key, list);
}
list.add(poolableStatement);
map.put(key, poolableStatement.getRawPreparedStatement());
}
public HashMap<PreparedStatementKey, List<PoolablePreparedStatement>> getMap() {
public HashMap<PreparedStatementKey, PreparedStatement> getMap() {
return map;
}