增加通用Mapper二级缓存测试的例子。

Author: abel533

src/test/java/com/github/abel533/mapper/CachedCountryMapper.java

@@ -0,0 +1,36 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 [email protected]
+ *
+ * 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.mapper;
+
+import com.github.abel533.hsqldb.HsqldbMapper;
+import com.github.abel533.model.Country;
+import org.apache.ibatis.annotations.CacheNamespace;
+
+/**
+ * Created by liuzh on 2014/11/19.
+ */
+@CacheNamespace
+public interface CachedCountryMapper extends Mapper<Country>,HsqldbMapper<Country> {
+}

src/test/java/com/github/abel533/test/country/TestCache.java

@@ -0,0 +1,104 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 [email protected]
+ *
+ * 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.test.country;
+
+import com.github.abel533.mapper.CachedCountryMapper;
+import com.github.abel533.mapper.MybatisHelper;
+import com.github.abel533.model.Country;
+import org.apache.ibatis.session.SqlSession;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 通过实体类属性进行查询
+ *
+ * @author liuzh
+ */
+public class TestCache {
+
+    @Test
+    public void testCache() {
+        SqlSession sqlSession = MybatisHelper.getSqlSession();
+        try {
+            CachedCountryMapper mapper = sqlSession.getMapper(CachedCountryMapper.class);
+            Country country = new Country();
+            country.setCountrycode("CN");
+            //第一次查询，会被缓存
+            country = mapper.selectOne(country);
+            Assert.assertEquals(true, country.getId() == 35);
+            Assert.assertEquals("China", country.getCountryname());
+            //只有close才会真正缓存，而不是用一级缓存
+            sqlSession.close();
+
+            //======================================================================
+            sqlSession = MybatisHelper.getSqlSession();
+            mapper = sqlSession.getMapper(CachedCountryMapper.class);
+            country = new Country();
+            country.setCountrycode("CN");
+            //第二次查询，会使用第一次的缓存
+            country = mapper.selectOne(country);
+
+            Assert.assertEquals(true, country.getId() == 35);
+            Assert.assertEquals("China", country.getCountryname());
+            //只有close才会真正缓存，而不是用一级缓存
+            sqlSession.close();
+
+            //======================================================================
+            sqlSession = MybatisHelper.getSqlSession();
+            mapper = sqlSession.getMapper(CachedCountryMapper.class);
+
+            country = new Country();
+            country.setCountryname("天朝");
+            country.setId(35);
+            //更新操作会清空缓存
+            int result = mapper.updateByPrimaryKeySelective(country);
+            Assert.assertEquals(1, result);
+            sqlSession.commit();
+            //只有close才会真正缓存，而不是用一级缓存
+            sqlSession.close();
+
+            //======================================================================
+            sqlSession = MybatisHelper.getSqlSession();
+            mapper = sqlSession.getMapper(CachedCountryMapper.class);
+            country = new Country();
+            country.setCountrycode("CN");
+            //第三次查询，会重新查询，不使用缓存
+            country = mapper.selectOne(country);
+
+            Assert.assertEquals(true, country.getId() == 35);
+            Assert.assertEquals("天朝", country.getCountryname());
+
+            country = new Country();
+            country.setCountryname("China");
+            country.setId(35);
+            //还原
+            result = mapper.updateByPrimaryKeySelective(country);
+            sqlSession.commit();
+            Assert.assertEquals(1, result);
+        } finally {
+            sqlSession.close();
+        }
+    }
+}

src/test/resources/mybatis-java.xml

@@ -31,6 +31,7 @@
 	<mappers>
     <mapper class="com.github.abel533.entity.mapper.CommonMapper"/>
     <mapper class="com.github.abel533.mapper.CountryMapper" />
+    <mapper class="com.github.abel533.mapper.CachedCountryMapper" />
     <mapper class="com.github.abel533.mapper.Country2Mapper" />
     <mapper class="com.github.abel533.mapper.CountryTMapper" />
     <mapper class="com.github.abel533.mapper.CountryUMapper" />