improved sql parser.

src/test/java/com/alibaba/druid/bvt/sql/mysql/param/MySqlParameterizedOutputVisitorTest_47_hints.java

@@ -0,0 +1,47 @@
+package com.alibaba.druid.bvt.sql.mysql.param;
+
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.parser.SQLParserUtils;
+import com.alibaba.druid.sql.parser.SQLStatementParser;
+import com.alibaba.druid.sql.visitor.SQLASTOutputVisitor;
+import com.alibaba.druid.util.JdbcConstants;
+import junit.framework.TestCase;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Created by wenshao on 16/8/23.
+ */
+public class MySqlParameterizedOutputVisitorTest_47_hints extends TestCase {
+    public void test_for_parameterize() throws Exception {
+        final String dbType = JdbcConstants.MYSQL;
+        String sql = "/* ///d45b1886/ *//*+TDDL({'extra':{'SOCKET_TIMEOUT':'0'}})*/ DELETE FROM page_scores WHERE createdat <= '2017-06-16 00:39:09.1';";
+
+        SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
+        List<SQLStatement> stmtList = parser.parseStatementList();
+        SQLStatement statement = stmtList.get(0);
+
+        StringBuilder out = new StringBuilder();
+        SQLASTOutputVisitor visitor = SQLUtils.createOutputVisitor(out, JdbcConstants.MYSQL);
+        List<Object> parameters = new ArrayList<Object>();
+        visitor.setParameterized(true);
+        visitor.setParameterizedMergeInList(true);
+        visitor.setParameters(parameters);
+        /*visitor.setPrettyFormat(false);*/
+        statement.accept(visitor);
+       /* JSONArray array = new JSONArray();
+        for(String table : visitor.getTables()){
+            array.add(table.replaceAll("`",""));
+        }*/
+
+        String psql = out.toString();
+
+        System.out.println(psql);
+
+
+        assertEquals("DELETE FROM page_scores\n" +
+                "WHERE createdat <= ?;", psql);
+    }
+}

src/test/java/com/alibaba/druid/bvt/sql/mysql/select/MySqlFlushTest_0.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 1999-2017 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.select;
+
+import com.alibaba.druid.sql.MysqlTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
+import com.alibaba.druid.util.JdbcConstants;
+
+import java.util.List;
+
+public class MySqlFlushTest_0 extends MysqlTest {
+
+    public void test_0() throws Exception {
+        String sql = "flush tables with read lock";
+
+
+        List<SQLStatement> statementList = SQLUtils.parseStatements(sql, JdbcConstants.MYSQL, true);
+        SQLStatement stmt = statementList.get(0);
+
+        assertEquals(1, statementList.size());
+
+        SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(JdbcConstants.MYSQL);
+        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());
+        
+//        assertEquals(1, visitor.getTables().size());
+//        assertEquals(1, visitor.getColumns().size());
+//        assertEquals(0, visitor.getConditions().size());
+//        assertEquals(0, visitor.getOrderByColumns().size());
+        
+        {
+            String output = SQLUtils.toMySqlString(stmt);
+            assertEquals("FLUSH TABLES WITH READ LOCK", //
+                                output);
+        }
+        {
+            String output = SQLUtils.toMySqlString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION);
+            assertEquals("flush tables with read lock", //
+                                output);
+        }
+
+        {
+            String output = SQLUtils.toMySqlString(stmt, new SQLUtils.FormatOption(true, true, true));
+            assertEquals("FLUSH TABLES WITH READ LOCK", //
+                    output);
+        }
+    }
+}