/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 my.test.command.ddl;

import my.test.TestBase;

public class CreateUserDataTypeTest extends TestBase {
	public static void main(String[] args) throws Exception {
		new CreateUserDataTypeTest().start();
	}

	//测试org.h2.command.Parser.parseCreateUserDataType()
	//和org.h2.command.ddl.CreateUserDataType、org.h2.engine.UserDataType
	@Override
	public void startInternal() throws Exception {
		stmt.executeUpdate("DROP DOMAIN IF EXISTS EMAIL");
		//VALUE是CREATE DOMAIN语句的默认临时列名
		stmt.executeUpdate("CREATE DOMAIN IF NOT EXISTS EMAIL AS VARCHAR(255) CHECK (POSITION('@', VALUE) > 1)");
		stmt.executeUpdate("CREATE TYPE IF NOT EXISTS EMAIL AS VARCHAR(255) CHECK (POSITION('@', VALUE) > 1)");
		stmt.executeUpdate("CREATE DATATYPE IF NOT EXISTS EMAIL AS VARCHAR(255) CHECK (POSITION('@', VALUE) > 1)");
		
		//stmt.executeUpdate("CREATE DATATYPE IF NOT EXISTS int AS VARCHAR(255) CHECK (POSITION('@', VALUE) > 1)");
		
		//从第二个名称开始的都是隐藏类型的，如下面的int
        //new String[]{"INTEGER", "INT", "MEDIUMINT", "INT4", "SIGNED"}
        //隐藏类型在用户在数据库中没有建表时可以覆盖
        //如CREATE DATATYPE IF NOT EXISTS int AS VARCHAR(255)
        //但是非隐藏类型就不能覆盖
        //如CREATE DATATYPE IF NOT EXISTS integer AS VARCHAR(255)
		//stmt.executeUpdate("CREATE DATATYPE IF NOT EXISTS integer AS VARCHAR(255) CHECK (POSITION('@', VALUE) > 1)");
	}
}