bug fixed for mysql parser. support syntax 'set xxx = ON

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlSetTest_1.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 1999-2101 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.bvt.sql.mysql;
+
+import java.util.List;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+
+import junit.framework.TestCase;
+
+public class MySqlSetTest_1 extends TestCase {
+
+    public void test_0() throws Exception {
+        String sql = "SET @@session.autocommit = ON;";
+
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> stmtList = parser.parseStatementList();
+        SQLStatement stmt = stmtList.get(0);
+//        print(stmtList);
+
+        Assert.assertEquals(1, stmtList.size());
+
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        stmt.accept(visitor);
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+//        System.out.println("orderBy : " + visitor.getOrderByColumns());
+
+        Assert.assertEquals(0, visitor.getTables().size());
+        Assert.assertEquals(0, visitor.getColumns().size());
+        Assert.assertEquals(0, visitor.getConditions().size());
+
+        String text = SQLUtils.toMySqlString(stmt);
+
+        Assert.assertEquals("SET @@session.autocommit = ON", text);
+    }
+}

src/test/java/com/alibaba/druid/demo/sql/ExportParameters.java

@@ -0,0 +1,33 @@
+package com.alibaba.druid.demo.sql;
+
+import java.util.List;
+
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlExportParameterVisitor;
+import com.alibaba.druid.sql.visitor.ExportParameterVisitor;
+import com.alibaba.druid.util.JdbcConstants;
+
+import junit.framework.TestCase;
+
+public class ExportParameters extends TestCase {
+    public void test_export_parameters() throws Exception {
+        String sql = "select * from t where id = 3 and name = 'abc'";
+        
+        List<SQLStatement> stmtList = SQLUtils.parseStatements(sql, JdbcConstants.MYSQL);
+        
+        StringBuilder out = new StringBuilder();
+        ExportParameterVisitor visitor = new MySqlExportParameterVisitor(out);
+        for (SQLStatement stmt : stmtList) {
+            stmt.accept(visitor);
+        }
+        
+        String paramteredSql = out.toString();
+        System.out.println(paramteredSql);
+        
+        List<Object> paramters = visitor.getParameters(); // [3, "abc"]
+        for (Object param : paramters) {
+            System.out.println(param);
+        }
+    }
+}