fix: 修复fieldMapping 基础类型查询null的情况，添加测试代码

mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/FieldMapping.java

@@ -0,0 +1,66 @@
+package com.mybatisflex.test.model;
+
+
+import com.mybatisflex.annotation.Column;
+import com.mybatisflex.annotation.Id;
+import com.mybatisflex.annotation.KeyType;
+import com.mybatisflex.annotation.Table;
+import com.mybatisflex.core.activerecord.Model;
+import com.mybatisflex.core.keygen.KeyGenerators;
+
+import java.util.Date;
+import java.util.Objects;
+
+
+@Table("field_mapping")
+public class FieldMapping extends Model<FieldMapping> {
+    @Id(keyType = KeyType.Generator,value = KeyGenerators.snowFlakeId)
+    private String id;
+    @Column(ignore = true)
+    private Date innerDate;
+
+    public String getId() {
+        return id;
+    }
+
+    public static FieldMapping create() {
+        return new FieldMapping();
+    }
+
+    public FieldMapping setId(String id) {
+        this.id = id;
+        return this;
+    }
+
+    public Date getInnerDate() {
+        return innerDate;
+    }
+
+    public FieldMapping setInnerDate(Date innerDate) {
+        this.innerDate = innerDate;
+        return this;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        FieldMapping that = (FieldMapping) o;
+        return Objects.equals(id, that.id) && Objects.equals(innerDate, that.innerDate);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, innerDate);
+    }
+
+    @Override
+    public String toString() {
+        return "FieldMapping{" +
+            "id='" + id + '\'' +
+            ", innerDate=" + innerDate +
+            '}';
+    }
+
+}
+

mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/java/com/mybatisflex/test/model/FieldMappingInner.java

@@ -0,0 +1,71 @@
+package com.mybatisflex.test.model;
+
+import com.mybatisflex.annotation.Id;
+import com.mybatisflex.annotation.KeyType;
+import com.mybatisflex.annotation.Table;
+import com.mybatisflex.core.activerecord.Model;
+import com.mybatisflex.core.keygen.KeyGenerators;
+
+import java.util.Date;
+import java.util.Objects;
+
+@Table("field_mapping_inner")
+public class FieldMappingInner extends Model<FieldMappingInner> {
+    @Id(keyType = KeyType.Generator,value = KeyGenerators.snowFlakeId)
+    private String id;
+    private String outId;
+    private Date createDate;
+
+    public static FieldMappingInner create() {
+        return new FieldMappingInner();
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public FieldMappingInner setId(String id) {
+        this.id = id;
+        return this;
+    }
+
+    public String getOutId() {
+        return outId;
+    }
+
+    public FieldMappingInner setOutId(String outId) {
+        this.outId = outId;
+        return this;
+    }
+
+    public Date getCreateDate() {
+        return createDate;
+    }
+
+    public FieldMappingInner setCreateDate(Date createDate) {
+        this.createDate = createDate;
+        return this;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        FieldMappingInner that = (FieldMappingInner) o;
+        return Objects.equals(id, that.id) && Objects.equals(outId, that.outId) && Objects.equals(createDate, that.createDate);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, outId, createDate);
+    }
+
+    @Override
+    public String toString() {
+        return "FieldMappingInner{" +
+            "id='" + id + '\'' +
+            ", outId='" + outId + '\'' +
+            ", createDate=" + createDate +
+            '}';
+    }
+}

mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/resources/application.yml

@@ -7,7 +7,7 @@ spring:
 #    driver-class-name: com.mysql.cj.jdbc.Driver
     url: jdbc:mysql://localhost:3306/flex_test
     username: root
-    password: 12345678
+    password: Aa123456#
   #    driver-class-name:
   #  datasource:
   #    driver-class-name: org.h2.Driver

mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/resources/field_mapping_test.sql

@@ -0,0 +1,12 @@
+create table field_mapping
+(
+    id varchar(255) not null
+        primary key
+);
+create table field_mapping_inner
+(
+    id          varchar(255) not null
+        primary key,
+    out_id      varchar(255) null,
+    create_date timestamp null
+);

mybatis-flex-test/mybatis-flex-spring-boot-test/src/test/java/com/mybatisflex/test/service/FieldMappingTest.java

@@ -0,0 +1,30 @@
+package com.mybatisflex.test.service;
+
+import com.mybatisflex.test.mapper.FieldMappingInnerMapper;
+import com.mybatisflex.test.mapper.FieldMappingMapper;
+import com.mybatisflex.test.model.FieldMapping;
+import com.mybatisflex.test.model.FieldMappingInner;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import java.util.Date;
+
+@SpringBootTest
+public class FieldMappingTest {
+    @Autowired
+    FieldMappingMapper fieldMappingMapper;
+    @Autowired
+    FieldMappingInnerMapper fieldMappingInnerMapper;
+    @Test
+    void testFieldMapping() {
+        String fieldId = FieldMapping.create().saveOpt().get().getId();
+        FieldMappingInner.create().setCreateDate(new Date()).setOutId(fieldId).save();
+        FieldMapping.create()
+            .withFields()
+            .fieldMapping(FieldMapping::getInnerDate, con ->
+                FieldMappingInner.create().select(FieldMappingInner::getCreateDate).where(FieldMappingInner::getOutId).eq(con.getId()).toQueryWrapper()
+            )
+            .list().forEach(System.out::println);
+    }
+}