MySqlSchemaStatVisitorTest_pk_0.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.visitor;

import com.alibaba.druid.sql.ast.SQLName;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
import com.alibaba.druid.sql.ast.statement.SQLTableElement;
import com.alibaba.druid.sql.ast.statement.SQLUnique;
import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
import com.alibaba.druid.stat.TableStat;
import junit.framework.TestCase;
import org.junit.Assert;

import java.util.List;

public class MySqlSchemaStatVisitorTest_pk_0 extends TestCase {

	public void test_0() throws Exception {
		String sql ="CREATE TABLE `m_dt` (\n" +
				"  `id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',\n" +
				"  `gmt_create` datetime NOT NULL COMMENT '创建时间',\n" +
				"  `gmt_modified` datetime NOT NULL COMMENT '修改时间',\n" +
				"  `instance_id` int(11) NOT NULL COMMENT '实例id',\n" +
				"  `schema_name` varchar(128) NOT NULL COMMENT '数据库schema名称',\n" +
				"  `state` tinyint(4) NOT NULL DEFAULT '0' COMMENT ' x dd ',\n" +
				"  `busi_user` varchar(64) DEFAULT NULL COMMENT 'JDBC业务用户',\n" +
				"  `bzp` varchar(128) DEFAULT NULL COMMENT 'bcp',\n" +
				"  `ecd` varchar(32) DEFAULT NULL COMMENT 'xxx',\n" +
				"  `last_sync_time` datetime DEFAULT NULL COMMENT '最后同步时间',\n" +
				"  `catalog_name` varchar(128) NOT NULL COMMENT '物理库名称',\n" +
				"  `search_name` varchar(256) NOT NULL COMMENT '用于搜索，区分不同数据库的不同字段信息',\n" +
				"  `db_type` tinyint(4) NOT NULL COMMENT '数据库类型，和meta_instance表一致',\n" +
				"  `et` varchar(32) NOT NULL DEFAULT '' COMMENT 'et',\n" +
				"  `ae` varchar(32) DEFAULT NULL COMMENT 'ae',\n" +
				"  PRIMARY KEY (`id`),\n" +
				"  UNIQUE KEY `uk_instanceid_schemaname` (`instance_id`,`catalog_name`,`schema_name`),\n" +
				"  KEY `idx_schema_name` (`schema_name`),\n" +
				"  KEY `idx_instance_id_state` (`instance_id`,`id`,`state`),\n" +
				"  KEY `idx_search_name` (`search_name`(255))\n" +
				") ENGINE=InnoDB AUTO_INCREMENT=408695 DEFAULT CHARSET=utf8 COMMENT='数据库表信息'";

//		sql = "select columnName from table1 where id in (select id from table3 where name = ?)";
		MySqlStatementParser parser = new MySqlStatementParser(sql);
		List<SQLStatement> statementList = parser.parseStatementList();
		SQLCreateTableStatement stmt = (SQLCreateTableStatement) statementList.get(0);

		Assert.assertEquals(1, statementList.size());

		MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
		stmt.accept(visitor);

		System.out.println(sql);
		System.out.println("Tables : " + visitor.getTables());
		System.out.println("fields : " + visitor.getColumns());

		Assert.assertEquals(1, visitor.getTables().size());
		Assert.assertEquals(true, visitor.containsTable("m_dt"));

		Assert.assertEquals(15, visitor.getColumns().size());

		{
			TableStat.Column column = visitor.getColumn("m_dt", "id");
			assertNotNull(column);
			assertTrue(column.isPrimaryKey());
		}
		{
			TableStat.Column column = visitor.getColumn("m_dt", "schema_name");
			assertNotNull(column);
			assertTrue(column.isUnique());
		}
		{
			TableStat.Column column = visitor.getColumn("m_dt", "instance_id");
			assertNotNull(column);
			assertTrue(column.isUnique());
		}

		for (SQLTableElement element : stmt.getTableElementList()) {
			if (element instanceof SQLUnique) {
				SQLName name = ((SQLUnique) element).getName();
				if (name != null) {
					String uniqueName = name.toString();
				}
			}
		}
		// Assert.assertEquals(true, visitor.getFields().contains(new
		// Column("users", "id")));
		// Assert.assertEquals(true, visitor.getFields().contains(new
		// Column("users", "name")));

	}

}