Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2014 abel533@gmail.com * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.github.abel533.entity.test; import com.github.abel533.entity.EntityMapper; import com.github.abel533.entity.Example; import com.github.abel533.entity.mapper.CommonMapper; import com.github.abel533.entity.model.Country; import com.github.abel533.mapper.MybatisHelper; import org.apache.ibatis.session.SqlSession; import org.junit.Assert; import org.junit.Test; import java.util.Arrays; import java.util.List; /** * Example * * @author liuzh */ public class TestExample { @Test public void testCountByExample() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CommonMapper commonMapper = sqlSession.getMapper(CommonMapper.class); EntityMapper entityMapper = new EntityMapper(commonMapper); Example example = new Example(Country.class); example.createCriteria().andGreaterThan("id", 100).andLessThanOrEqualTo("id", 150); int count = entityMapper.countByExample(example); Assert.assertEquals(50, count); example = new Example(Country.class); example.createCriteria().andLike("countryname", "A%"); count = entityMapper.countByExample(example); Assert.assertEquals(12, count); } finally { sqlSession.close(); } } @Test public void testDeleteByExample() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CommonMapper commonMapper = sqlSession.getMapper(CommonMapper.class); EntityMapper entityMapper = new EntityMapper(commonMapper); Example example = new Example(Country.class); example.createCriteria().andGreaterThan("id", 100).andLessThanOrEqualTo("id", 150); int count = entityMapper.deleteByExample(example); Assert.assertEquals(50, count); example = new Example(Country.class); example.createCriteria().andLike("countryname", "A%"); count = entityMapper.deleteByExample(example); Assert.assertEquals(12, count); } finally { // sqlSession.rollback(); sqlSession.close(); } } @Test public void testSelectByExample() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CommonMapper commonMapper = sqlSession.getMapper(CommonMapper.class); EntityMapper entityMapper = new EntityMapper(commonMapper); Example example = new Example(Country.class); example.createCriteria().andEqualTo("countryname", "China"); List<Country> countries = entityMapper.selectByExample(example); Assert.assertEquals(1, countries.size()); Assert.assertEquals("CN", countries.get(0).getCountrycode()); example = new Example(Country.class); example.createCriteria().andEqualTo("id", 100); countries = entityMapper.selectByExample(example); Assert.assertEquals(1, countries.size()); Assert.assertEquals("MY", countries.get(0).getCountrycode()); } finally { sqlSession.close(); } } @Test public void testSelectByExampleInNotIn() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CommonMapper commonMapper = sqlSession.getMapper(CommonMapper.class); EntityMapper entityMapper = new EntityMapper(commonMapper); Example example = new Example(Country.class); example.createCriteria().andIn("id", Arrays.asList(new Object[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 })) .andNotIn("id", Arrays.asList(new Object[] { 11 })); List<Country> countries = entityMapper.selectByExample(example); // Assert.assertEquals(10, countries.size()); } finally { sqlSession.close(); } } @Test public void testUpdateByExampleSelective() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CommonMapper commonMapper = sqlSession.getMapper(CommonMapper.class); EntityMapper entityMapper = new EntityMapper(commonMapper); Example example = new Example(Country.class); example.createCriteria().andEqualTo("countryname", "China"); Country country = new Country(); country.setCountryname("?"); int count = entityMapper.updateByExampleSelective(country, example); Assert.assertEquals(1, count); example = new Example(Country.class); example.createCriteria().andEqualTo("countryname", "?"); List<Country> countries = entityMapper.selectByExample(example); Assert.assertEquals(1, countries.size()); Assert.assertEquals("?", countries.get(0).getCountryname()); } finally { // sqlSession.rollback(); sqlSession.close(); } } @Test public void testUpdateByExample() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CommonMapper commonMapper = sqlSession.getMapper(CommonMapper.class); EntityMapper entityMapper = new EntityMapper(commonMapper); Example example = new Example(Country.class); example.createCriteria().andLike("countryname", "A%"); Country country = new Country(); country.setCountryname(""); int count = entityMapper.updateByExample(country, example); Assert.assertEquals(12, count); example = new Example(Country.class); example.createCriteria().andEqualTo("countryname", ""); List<Country> countries = entityMapper.selectByExample(example); Assert.assertEquals(12, countries.size()); Assert.assertEquals("", countries.get(0).getCountryname()); } finally { // sqlSession.rollback(); sqlSession.close(); } } }