11# lambda-query 1.0 版本
2- [ ![ ] ( https://travis-ci.org/xuejike/lambda-query.svg?branch=master )]
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2+ [ ![ ] ( https://travis-ci.org/xuejike/lambda-query.svg?branch=master )] ( https://github.com/xuejike/lambda-query )
3+ [ ![ Maven Central] ( https://maven-badges.herokuapp.com/maven-central/com.github.xuejike/lambda-query/badge.svg )] ( https://mvnrepository.com/artifact/com.github.xuejike )
54## 介绍
65LambdaQuery 将支持通过Lambda进行多种数据源的查询 实现java端的简单数据的统一查询
76## 功能规划
@@ -10,7 +9,7 @@ LambdaQuery 将支持通过Lambda进行多种数据源的查询 实现java端的
109* [ ] 实现 新增,删除,更新等基础操作[ 开发中]
1110
1211### 2. mybatis-plus
13- * [ ] 接入mybatis-plus的查询接口
12+ * [x ] 接入mybatis-plus的查询接口(已完成)
1413* [ ] 接入mybatis-plus 的新增,删除,更新操作
1514* [ ] 新增LoadJoin功能,通过selectIn的方式进行数据表join
1615* [ ] 新增Cache功能,采用redis 进行数据缓存,配合selectIn方式避免join查询直接访问数据库
@@ -46,13 +45,236 @@ LambdaQuery 将支持通过Lambda进行多种数据源的查询 实现java端的
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4746
4847
49- ### 3.持久化操作
48+ ## 使用说明
49+ ### 1.依赖引入
50+ 1 . springBoot自动配置
51+ ``` xml
52+ <!-- Mongo 查询器依赖-->
53+ <dependency >
54+ <groupId >com.github.xuejike</groupId >
55+ <artifactId >lambda-query-mongo-starter</artifactId >
56+ <version >${jkquery.version}</version >
57+ </dependency >
58+ <!-- MybatisPlus 查询器依赖-->
59+
60+ <dependency >
61+ <groupId >com.github.xuejike</groupId >
62+ <artifactId >lambda-query-mybatis-plus-starter</artifactId >
63+ <version >${jkquery.version}</version >
64+ </dependency >
65+
66+ ```
67+ 2 . 手动配置
68+
69+ 引入依赖
70+ ``` xml
71+ <!-- Mongo 查询器依赖-->
72+ <dependency >
73+ <groupId >com.github.xuejike</groupId >
74+ <artifactId >lambda-query-mongo</artifactId >
75+ <version >${jkquery.version}</version >
76+ </dependency >
77+
78+ <!-- MybatisPlus 查询器依赖-->
79+
80+ <dependency >
81+ <groupId >com.github.xuejike</groupId >
82+ <artifactId >lambda-query-mybatis-plus</artifactId >
83+ <version >${jkquery.version}</version >
84+ </dependency >
85+
86+ ```
87+
88+ 初始化工厂类
89+ ``` java
90+ // MongoDB 查询器初始化
91+ @Bean
92+ public MongoDaoFactory mongoDaoFactory(MongoTemplate mongoTemplate){
93+ return new MongoDaoFactory (mongoTemplate);
94+ }
95+
96+ // MybatisPlus 查询器初始化
97+ @Bean
98+ public MyBatisPlusDaoFactory myBatisPlusDaoFactory(Collection<BaseMapper > mapperCollection){
99+ MyBatisPlusDaoFactory myBatisPlusDaoFactory = new MyBatisPlusDaoFactory (mapperCollection);
100+ return myBatisPlusDaoFactory;
101+ }
102+ ```
103+ ### 2.Mongo查询器使用
104+
105+ 1 . 创建实体类
106+
107+ ``` java
108+ @Document (" demo_doc"
109+ @Data
110+ // 采用mongo进行查询
111+ @MongoDaoSelect
112+ public class TestDoc {
113+ @MongoId
114+ private String id;
115+ private String name;
116+ private String title;
117+ private Long num;
118+ private List<Title > toc;
119+ @Data
120+ public static class Title {
121+ private String title;
122+ private String desc;
123+
124+ }
125+ }
126+
127+ ```
128+
129+ 2 . 进行查询
130+ ``` java
131+
132+ /**
133+ * == 查询
134+ */
135+ @Test
136+ public void testEq(){
137+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class). eq(TestDoc :: getName, " name_1" . list();
138+ Assertions . assertEquals(list. size(),1 );
139+ TestDoc testDoc = list. get(0 );
140+ Assertions . assertEquals(testDoc. getTitle()," title_1"
141+ }
142+
143+ /**
144+ * 大于号查询
145+ *
146+ */
147+ @Test
148+ public void testGt(){
149+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class). gt(TestDoc :: getNum,3 ). list();
150+ Assertions . assertEquals(list. size(),1 );
151+ TestDoc testDoc = list. get(0 );
152+ Assertions . assertEquals(testDoc. getTitle()," title_4"
153+ }
154+
155+ /**
156+ * 大于等于查询
157+ */
158+ @Test
159+ public void testGte(){
160+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class). gte(TestDoc :: getNum,4 ). list();
161+ Assertions . assertEquals(list. size(),1 );
162+ TestDoc testDoc = list. get(0 );
163+ Assertions . assertEquals(testDoc. getTitle()," title_4"
164+ }
165+
166+ /**
167+ * 小于号查询
168+ */
169+ @Test
170+ public void testLt(){
171+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class). lt(TestDoc :: getNum,1 ). list();
172+ Assertions . assertEquals(list. size(),1 );
173+ TestDoc testDoc = list. get(0 );
174+ Assertions . assertEquals(testDoc. getTitle()," title_0"
175+ }
176+
177+ /**
178+ * 小于等于查询
179+ */
180+ @Test
181+ public void testLte(){
182+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class). lte(TestDoc :: getNum,0 ). list();
183+ Assertions . assertEquals(list. size(),1 );
184+ TestDoc testDoc = list. get(0 );
185+ Assertions . assertEquals(testDoc. getTitle()," title_0"
186+ }
187+
188+ /**
189+ * In 查询
190+ */
191+ @Test
192+ public void testIn(){
193+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class)
194+ .in(TestDoc :: getTitle," title_0" . list();
195+ Assertions . assertEquals(list. size(),1 );
196+ TestDoc testDoc = list. get(0 );
197+ Assertions . assertEquals(testDoc. getTitle()," title_0"
198+ }
199+
200+ /**
201+ * NotIn 查询
202+ */
203+ @Test
204+ public void testNotIn(){
205+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class)
206+ .notIn(TestDoc :: getTitle," title_0" " title_1" " title_2" " title_3" . list();
207+ Assertions . assertEquals(list. size(),1 );
208+ TestDoc testDoc = list. get(0 );
209+ Assertions . assertEquals(testDoc. getTitle()," title_4"
210+ }
211+
212+ /**
213+ * or 查询
214+ */
215+ @Test
216+ public void testOr(){
217+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class). or(). eq(TestDoc :: getNum, 0 ). or(). eq(TestDoc :: getNum, 1 ). list();
218+ Assertions . assertEquals(list. size(),2 );
219+
220+ list = JkQuerys . lambdaQuery(TestDoc . class). or(it- > {
221+ it. eq(TestDoc :: getNum,0 ). eq(TestDoc :: getName," name_0"
222+ }). or(it- > {
223+ it. eq(TestDoc :: getNum,1 ). eq(TestDoc :: getName," name_1"
224+ }). list();
225+ Assertions . assertEquals(list. size(),2 );
226+
227+
228+ }
229+
230+ /**
231+ * 排序查询
232+ */
233+ @Test
234+ public void testOrder(){
235+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class). in(TestDoc :: getNum, 1 , 2 ). orderAsc(TestDoc :: getNum). list();
236+ Assertions . assertEquals(list. size(),2 );
237+ Assertions . assertEquals(list. get(0 ). getNum(),1 );
238+ Assertions . assertEquals(list. get(1 ). getNum(),2 );
239+
240+ list = JkQuerys . lambdaQuery(TestDoc . class). in(TestDoc :: getNum, 1 , 2 ). orderDesc(TestDoc :: getNum). list();
241+ Assertions . assertEquals(list. size(),2 );
242+ Assertions . assertEquals(list. get(0 ). getNum(),2 );
243+ Assertions . assertEquals(list. get(1 ). getNum(),1 );
244+ }
245+
246+ /**
247+ * 二级字段查询
248+ */
249+ @Test
250+ public void testSubField(){
251+ List<TestDoc > list = JkQuerys . lambdaQuery(TestDoc . class). eq(of(). subList(TestDoc :: getToc). sub(TestDoc . Title :: getTitle), " sub_title_0_0" . list();
252+ Assertions . assertEquals(list. size(),1 );
253+ Assertions . assertEquals(list. get(0 ). getNum(),0 );
254+ }
255+ public CascadeField<TestDoc ,TestDoc > of(){
256+ return new CascadeField<> ();
257+ }
258+
259+ ```
260+
261+
262+ ### 3.MybatisPlus查询器使用
263+
264+ mybatis-plus 实体初始化
265+
266+ ``` java
267+ @Data
268+ @TableName (" u1"
269+ @MyBatisPlusDaoSelect
270+ public class U1 {
271+ @TableId (type = IdType . AUTO
272+ private Long id;
273+ private String name;
274+ private String type;
50275
51- * 新增
52- * 删除
53- * 更新
54- * 条件更新
276+ }
55277
56- ## 扩展其他查询
57278
279+ ```
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