From 04321df02cdc77de3d624d9014fb3234da1e9647 Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Mon, 19 Nov 2012 17:13:06 +0800
Subject: [PATCH] bug fixed for dbType

---
 src/main/java/com/alibaba/druid/pool/DruidDataSource.java | 4 ++++
 src/main/java/com/alibaba/druid/wall/WallFilter.java      | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 0f06d961e4..f7830e468f 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -336,6 +336,10 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
             this.id = DruidDriver.createDataSourceId();
 
             loadFilterFromSystemProperty();
+            
+            if (this.dbType == null || this.dbType.length() == 0) {
+                this.dbType = JdbcUtils.getDbType(jdbcUrl, null);
+            }
 
             for (Filter filter : filters) {
                 filter.init(this);
diff --git a/src/main/java/com/alibaba/druid/wall/WallFilter.java b/src/main/java/com/alibaba/druid/wall/WallFilter.java
index 4f4ca8d54f..c81a6802aa 100644
--- a/src/main/java/com/alibaba/druid/wall/WallFilter.java
+++ b/src/main/java/com/alibaba/druid/wall/WallFilter.java
@@ -58,6 +58,10 @@ public class WallFilter extends FilterAdapter implements WallFilterMBean {
         if (this.dbType == null || this.dbType.trim().length() == 0) {
             this.dbType = dataSource.getDbType();
         }
+        
+        if (dbType == null) {
+            dbType = JdbcUtils.getDbType(dataSource.getUrl(), null);
+        }
 
         if (JdbcUtils.MYSQL.equals(dbType)) {
             if (config == null) {