减少PreparedStatementProxyImpl的内存占用

src/main/java/com/alibaba/druid/filter/logging/LogFilter.java

@@ -21,7 +21,6 @@ import java.sql.Savepoint;
 import java.sql.Types;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Map;
 
 import com.alibaba.druid.filter.FilterChain;
 import com.alibaba.druid.filter.FilterEventAdapter;
@@ -507,15 +506,16 @@ public abstract class LogFilter extends FilterEventAdapter implements LogFilterM
             return;
         }
 
-        Map<Integer, JdbcParameter> parameterMap = statement.getParameters();
-        if (parameterMap == null || parameterMap.size() == 0) {
+        int parametersSize = statement.getParametersSize();
+        if (parametersSize == 0) {
             statementLog("{conn-" + statement.getConnectionProxy().getId() + ", " + stmtId(statement) + "} executed. "
                          + sql);
             return;
         }
 
-        List<Object> parameters = new ArrayList<Object>(parameterMap.size());
-        for (JdbcParameter jdbcParam : parameterMap.values()) {
+        List<Object> parameters = new ArrayList<Object>(parametersSize);
+        for (int i = 0; i < parametersSize; ++i) {
+            JdbcParameter jdbcParam = statement.getParameter(i);
             parameters.add(jdbcParam.getValue());
         }
 
@@ -737,11 +737,16 @@ public abstract class LogFilter extends FilterEventAdapter implements LogFilterM
                 buf.append(stmtId(statement));
                 buf.append("}");
                 buf.append(" Parameters : [");
-                int parameterIndex = 0;
-                for (JdbcParameter parameter : statement.getParameters().values()) {
-                    if (parameterIndex != 0) {
+                
+                for (int i = 0, parametersSize = statement.getParametersSize(); i < parametersSize; ++i) {
+                    JdbcParameter parameter = statement.getParameter(i);
+                    if (i != 0) {
                         buf.append(", ");
                     }
+                    if (parameter == null) {
+                        continue;
+                    }
+                    
                     int sqlType = parameter.getSqlType();
                     Object value = parameter.getValue();
                     switch (sqlType) {
@@ -752,7 +757,6 @@ public abstract class LogFilter extends FilterEventAdapter implements LogFilterM
                             buf.append(String.valueOf(value));
                             break;
                     }
-                    parameterIndex++;
                 }
                 buf.append("]");
                 statementLog(buf.toString());
@@ -765,14 +769,16 @@ public abstract class LogFilter extends FilterEventAdapter implements LogFilterM
                 buf.append(stmtId(statement));
                 buf.append("}");
                 buf.append(" Types : [");
-                int parameterIndex = 0;
-                for (JdbcParameter parameter : statement.getParameters().values()) {
-                    if (parameterIndex != 0) {
+                for (int i = 0, parametersSize = statement.getParametersSize(); i < parametersSize; ++i) {
+                    JdbcParameter parameter = statement.getParameter(i);
+                    if (i != 0) {
                         buf.append(", ");
                     }
+                    if (parameter == null) {
+                        continue;
+                    }
                     int sqlType = parameter.getSqlType();
                     buf.append(JdbcUtils.getTypeName(sqlType));
-                    parameterIndex++;
                 }
                 buf.append("]");
                 statementLog(buf.toString());

src/main/java/com/alibaba/druid/proxy/jdbc/StatementProxy.java

@@ -1,56 +1,59 @@
-/*
- * Copyright 1999-2011 Alibaba Group Holding Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.alibaba.druid.proxy.jdbc;
-
-import java.sql.Statement;
-import java.util.List;
-import java.util.Map;
-
-import com.alibaba.druid.stat.JdbcSqlStat;
-
-/**
- * @author wenshao<szujobs@hotmail.com>
- */
-public interface StatementProxy extends Statement, WrapperProxy {
-
-    ConnectionProxy getConnectionProxy();
-
-    Statement getRawObject();
-
-    List<String> getBatchSqlList();
-
-    String getBatchSql();
-    
-    JdbcSqlStat getSqlStat();
-    
-    StatementExecuteType getLastExecuteType();
-    
-    void setSqlStat(JdbcSqlStat sqlStat);
-
-    String getLastExecuteSql();
-    
-    long getLastExecuteStartNano();
-    void setLastExecuteStartNano(long lastExecuteStartNano);
-    void setLastExecuteStartNano();
-    
-    long getLastExecuteTimeNano();
-    void setLastExecuteTimeNano(long nano);
-    void setLastExecuteTimeNano();
-    
-    Map<Integer, JdbcParameter> getParameters();
-    
-    boolean isFirstResultSet();
-}
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.proxy.jdbc;
+
+import java.sql.Statement;
+import java.util.List;
+import java.util.Map;
+
+import com.alibaba.druid.stat.JdbcSqlStat;
+
+/**
+ * @author wenshao<szujobs@hotmail.com>
+ */
+public interface StatementProxy extends Statement, WrapperProxy {
+
+    ConnectionProxy getConnectionProxy();
+
+    Statement getRawObject();
+
+    List<String> getBatchSqlList();
+
+    String getBatchSql();
+    
+    JdbcSqlStat getSqlStat();
+    
+    StatementExecuteType getLastExecuteType();
+    
+    void setSqlStat(JdbcSqlStat sqlStat);
+
+    String getLastExecuteSql();
+    
+    long getLastExecuteStartNano();
+    void setLastExecuteStartNano(long lastExecuteStartNano);
+    void setLastExecuteStartNano();
+    
+    long getLastExecuteTimeNano();
+    void setLastExecuteTimeNano(long nano);
+    void setLastExecuteTimeNano();
+    
+    Map<Integer, JdbcParameter> getParameters();
+    
+    int getParametersSize();
+    JdbcParameter getParameter(int i);
+    
+    boolean isFirstResultSet();
+}