From 8d3523c12255b43c22762ab0eae150dbed8201a2 Mon Sep 17 00:00:00 2001
From: unknown <owenludong.lud@ALI-55658.hz.ali.com>
Date: Mon, 24 Jun 2013 18:44:13 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=BA=E6=95=B0=E6=8D=AE=E5=BA=93=E5=AD=97?=
 =?UTF-8?q?=E6=AE=B5=E6=B7=BB=E5=8A=A0=E6=97=A5=E6=9C=9F=E8=BD=AC=E6=8D=A2?=
 =?UTF-8?q?=E5=87=BD=E6=95=B0=20=E6=94=AF=E6=8C=81mysql=E5=92=8Coracle?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../com/alibaba/druid/util/JdbcUtils.java     | 33 +++++++++++++++++++
 .../druid/bvt/utils/JdbcUtilsTest.java        |  9 +++++
 2 files changed, 42 insertions(+)

diff --git a/src/main/java/com/alibaba/druid/util/JdbcUtils.java b/src/main/java/com/alibaba/druid/util/JdbcUtils.java
index 8aa458ae1d..87b55963d9 100644
--- a/src/main/java/com/alibaba/druid/util/JdbcUtils.java
+++ b/src/main/java/com/alibaba/druid/util/JdbcUtils.java
@@ -682,4 +682,37 @@ public final class JdbcUtils implements JdbcConstants {
 
         return sql.toString();
     }
+    
+    
+    /**
+     * @author owenludong.lud
+     * @param  columnName
+     * @param  tableAlias 
+     * @param  pattern if pattern is null,it will be set {%Y-%m-%d %H:%i:%s} as mysql default value and set {yyyy-mm-dd hh24:mi:ss} as oracle default value
+     * @param  dbType  {@link JdbcConstants} if dbType is null ,it will be set the mysql as a default value
+     */
+    public static String formatColumnToDateType(String columnName,String tableAlias,String pattern,String dbType){    	
+     	StringBuilder sql = new StringBuilder();    	
+     	if(!StringUtils.isEmpty(columnName)){    		
+         	if(StringUtils.isEmpty(dbType))    dbType = JdbcConstants.MYSQL;   
+         	String formatMethod = "";
+         	if(MYSQL.equalsIgnoreCase(dbType)){
+         		formatMethod = "STR_TO_DATE";
+         		if(StringUtils.isEmpty(pattern)) pattern = "%Y-%m-%d %H:%i:%s";
+         	}else if(ORACLE.equalsIgnoreCase(dbType)){
+         		formatMethod = "TO_DATE";
+         		if(StringUtils.isEmpty(pattern)) pattern = "yyyy-mm-dd hh24:mi:ss";
+         	}else{
+         		//expand date's handle method for other database 
+         	}
+         	sql.append(formatMethod).append("(");        	
+     		if(!StringUtils.isEmpty(tableAlias))
+     			sql.append(tableAlias).append("."); 
+     		sql.append(columnName).append(",");
+     		sql.append("'");
+     		sql.append(pattern);
+     		sql.append("')");
+     	}    	
+     	return sql.toString();
+     }
 }
diff --git a/src/test/java/com/alibaba/druid/bvt/utils/JdbcUtilsTest.java b/src/test/java/com/alibaba/druid/bvt/utils/JdbcUtilsTest.java
index 739da78143..2296e36b67 100644
--- a/src/test/java/com/alibaba/druid/bvt/utils/JdbcUtilsTest.java
+++ b/src/test/java/com/alibaba/druid/bvt/utils/JdbcUtilsTest.java
@@ -23,6 +23,7 @@ import junit.framework.Assert;
 import junit.framework.TestCase;
 
 import com.alibaba.druid.pool.DruidDataSource;
+import com.alibaba.druid.util.JdbcConstants;
 import com.alibaba.druid.util.JdbcUtils;
 
 public class JdbcUtilsTest extends TestCase {
@@ -79,4 +80,12 @@ public class JdbcUtilsTest extends TestCase {
             Assert.assertEquals(0, list.size());
         }
     }
+    
+    public void test_formatColumnToDateType(){
+    	String colunExp = JdbcUtils.formatColumnToDateType("gmt_create","oo","",JdbcConstants.ORACLE);
+		Assert.assertEquals("TO_DATE(oo.gmt_create,'yyyy-mm-dd hh24:mi:ss')", colunExp);
+		
+		String colunExp2 = JdbcUtils.formatColumnToDateType("gmt_create","oo","",JdbcConstants.MYSQL);
+		Assert.assertEquals("STR_TO_DATE(oo.gmt_create,'%Y-%m-%d %H:%i:%s')", colunExp2);	
+    }
 }