修正运算符优先级别处理不当的问题

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@157 b9813039-fb51-4c41-a8b9-e21c2acb5095

src/test/java/com/alibaba/druid/sql/OnlineSQLTest.java

@@ -4,19 +4,24 @@ import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.Statement;
+import java.util.List;
 
+import junit.framework.Assert;
 import junit.framework.TestCase;
 
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlParameterizedOutputVisitor;
+
 public class OnlineSQLTest extends TestCase {
-    private String url = "jdbc:mysql://10.20.129.146/dragoon_v25monitordb_online";
-    private String user = "dragoon";
+
+    private String url      = "jdbc:mysql://10.20.129.146/dragoon_v25monitordb_online";
+    private String user     = "dragoon";
     private String password = "dragoon";
-    
-    
-    
+
     public void test_list_sql() throws Exception {
         Connection conn = DriverManager.getConnection(url, user, password);
-        
+
         int count = 0;
         String sql = "SELECT id, value FROM m_sql_const";
         Statement stmt = conn.createStatement();
@@ -25,13 +30,38 @@ public class OnlineSQLTest extends TestCase {
             String value = rs.getString(2);
             System.out.println(value);
             System.out.println();
+            try {
+                validate(value);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
             count++;
         }
         rs.close();
         stmt.close();
-        
+
         System.out.println("COUNT : " + count);
-        
+
         conn.close();
     }
+
+    void validate(String sql) throws Exception {
+
+        try {
+            MySqlStatementParser parser = new MySqlStatementParser(sql);
+            List<SQLStatement> statementList = parser.parseStatementList();
+            SQLStatement statemen = statementList.get(0);
+
+            Assert.assertEquals(1, statementList.size());
+
+            StringBuilder out = new StringBuilder();
+            MySqlParameterizedOutputVisitor visitor = new MySqlParameterizedOutputVisitor(out);
+            statemen.accept(visitor);
+
+            System.out.println(sql);
+            System.out.println(out.toString());
+        } catch (Exception e) {
+            throw e;
+        }
+    }
 }

src/test/java/com/alibaba/druid/sql/mysql/bvt/AssignmentOperatorsTest.java

@@ -79,7 +79,7 @@ public class AssignmentOperatorsTest extends TestCase {
 
         String text = output(stmtList);
 
-        Assert.assertEquals("UPDATE t1 SET c1 = 2 WHERE c1 = @var1 := 1;", text);
+        Assert.assertEquals("UPDATE t1 SET c1 = 2 WHERE c1 = (@var1 := 1);", text);
     }
 
     private String output(List<SQLStatement> stmtList) {

src/test/java/com/alibaba/druid/sql/mysql/bvt/MySqlParameterizedOutputVisitorTest.java

@@ -12,8 +12,8 @@ import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlParameterizedOutputVisit
 public class MySqlParameterizedOutputVisitorTest extends TestCase {
 
     public void test_0() throws Exception {
-        //validate("SELECT * FROM T WHERE ID IN (?, ?, ?)", "SELECT * FROM T WHERE ID IN (##)");
-        //validate("SELECT * FROM T WHERE ID = 5", "SELECT * FROM T WHERE ID = ?");
+        validate("SELECT * FROM T WHERE ID IN (?, ?, ?)", "SELECT * FROM T WHERE ID IN (##)");
+        validate("SELECT * FROM T WHERE ID = 5", "SELECT * FROM T WHERE ID = ?");
         validate("SELECT * FROM T WHERE 1 = 0 AND ID = 5", "SELECT * FROM T WHERE 1 = 0 AND ID = ?");
     }