MySqlAlterTableTest5.java

/*
 * 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.alter;

import org.junit.Assert;
import junit.framework.TestCase;

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 com.alibaba.druid.sql.parser.Token;
import com.alibaba.druid.stat.TableStat.Column;

public class MySqlAlterTableTest5 extends TestCase {

    public void test_alter_first() throws Exception {
        String sql = "ALTER TABLE table_name   change COLUMN column_name column_newname char(50)";
        MySqlStatementParser parser = new MySqlStatementParser(sql);
        SQLStatement stmt = parser.parseStatementList().get(0);
        parser.match(Token.EOF);

        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());

        String output = SQLUtils.toMySqlString(stmt);
        Assert.assertEquals("ALTER TABLE table_name" + //
        		"\n\tCHANGE COLUMN column_name column_newname char(50)", output);

        Assert.assertEquals(1, visitor.getTables().size());
        Assert.assertEquals(1, visitor.getColumns().size());
        Assert.assertTrue(visitor.getColumns().contains(new Column("table_name", "column_name")));
    }

}