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@156 b9813039-fb51-4c41-a8b9-e21c2acb5095

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

@@ -158,6 +158,28 @@ public class ArithmeticOperatorsTest extends TestCase {
 
         Assert.assertEquals("SELECT N % M;", text);
     }
+    
+    public void test_12() throws Exception {
+        String sql = "SELECT 1 = 0 OR A > ?;";
+
+        SQLStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> stmtList = parser.parseStatementList();
+
+        String text = output(stmtList);
+
+        Assert.assertEquals("SELECT 1 = 0 OR A > ?;", text);
+    }
+    
+    public void test_13() throws Exception {
+        String sql = "SELECT 1 = 0 AND ID = ?;";
+        
+        SQLStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> stmtList = parser.parseStatementList();
+        
+        String text = output(stmtList);
+        
+        Assert.assertEquals("SELECT 1 = 0 AND ID = ?;", text);
+    }
 
     private String output(List<SQLStatement> stmtList) {
         StringBuilder out = new StringBuilder();

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

@@ -0,0 +1,34 @@
+package com.alibaba.druid.sql.mysql.bvt;
+
+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 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 1 = 0 AND ID = 5", "SELECT * FROM T WHERE 1 = 0 AND ID = ?");
+    }
+
+    void validate(String sql, String expect) {
+
+        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);
+
+        Assert.assertEquals(expect, out.toString());
+    }
+}