icu.mhb.mybatisplus.plugln.interceptor

类 JoinInterceptor

java.lang.Object

icu.mhb.mybatisplus.plugln.interceptor.JoinInterceptor

所有已实现的接口:

org.apache.ibatis.plugin.Interceptor

@Order(value=-2147483648)
 @Intercepts(value=@Signature(type=org.apache.ibatis.executor.Executor.class,method="query",args={org.apache.ibatis.mapping.MappedStatement.class,java.lang.Object.class,org.apache.ibatis.session.RowBounds.class,org.apache.ibatis.session.ResultHandler.class}))
public class JoinInterceptor
extends Object
implements org.apache.ibatis.plugin.Interceptor

join返回类型拦截器

作者:

mahuibo

嵌套类概要

嵌套类

限定符和类型	类和说明
private static class	JoinInterceptor.FieldTransAnnotationInfo FieldTrans注解信息
private static class	JoinInterceptor.ManyToManyAnnotationInfo ManyToMany注解信息
private static class	JoinInterceptor.OneToOneAnnotationInfo OneToOne注解信息

字段概要

字段

限定符和类型	字段和说明
private static Map<String,Map<org.apache.ibatis.session.Configuration,org.apache.ibatis.mapping.MappedStatement>>	MS_CACHE 缓存MappedStatement
private MybatisPlusJoinConfig	mybatisPlusJoinConfig

构造器概要

构造器

构造器和说明
JoinInterceptor()

方法概要

限定符和类型	方法和说明
private void	addResultMapSafely(org.apache.ibatis.session.Configuration configuration, org.apache.ibatis.mapping.ResultMap resultMap, String id) 安全地添加ResultMap
private String	buildMappedStatementId(org.apache.ibatis.mapping.MappedStatement ms, SupportJoinWrapper joinWrapper, Class<?> classType) 构建MappedStatement ID
private org.apache.ibatis.mapping.MappedStatement	buildNewMappedStatement(org.apache.ibatis.mapping.MappedStatement ms, String id, SupportJoinWrapper joinWrapper, Class<?> classType) 构建新的MappedStatement
private String	buildResultMapId(org.apache.ibatis.mapping.MappedStatement ms, SupportJoinWrapper joinWrapper, Class<?> classType) 构建ResultMap ID
private org.apache.ibatis.mapping.ResultMapping	buildResultMapping(org.apache.ibatis.session.Configuration configuration, FieldMapping fieldMapping, Class<?> clz) 构建单个结果映射
private List<org.apache.ibatis.mapping.ResultMapping>	buildResultMappings(org.apache.ibatis.session.Configuration configuration, List<FieldMapping> fieldMappings, Class<?> clz) 构建结果映射
private Object	convertToVO(Object source, Class<?> targetClass) 将实体对象转换为VO对象 使用Spring的BeanUtils进行属性拷贝
private org.apache.ibatis.mapping.MappedStatement	createMappedStatement(org.apache.ibatis.mapping.MappedStatement ms, SupportJoinWrapper joinWrapper, Class<?> classType) 创建新的MappedStatement
private org.apache.ibatis.mapping.ResultMap	createResultMap(org.apache.ibatis.mapping.MappedStatement ms, SupportJoinWrapper joinWrapper, Class<?> classType) 创建ResultMap，处理并发情况
private Class<?>	getFieldType(Class<?> clazz, String fieldName) 获取字段类型
private Class<?>	getListGenericType(Field field) 获取List字段的泛型类型 使用MyBatis-Plus的GenericTypeUtils获取泛型类型
Object	intercept(org.apache.ibatis.plugin.Invocation invocation)
private boolean	isUseMsCache()
private void	processAnnotationMapping(Object result, Class<?> returnClass) 处理注解映射 (OneToOne 和 ManyToMany)
private void	processFieldTransAnnotation(Collection<?> dataList, Map<String,JoinInterceptor.FieldTransAnnotationInfo> fieldTransMap, Map<String,Field> fieldMap) 处理FieldTrans注解 从子表中查询数据，提取指定字段并映射到当前对象的字段上
private void	processManyToManyAnnotation(Collection<?> dataList, Map<String,JoinInterceptor.ManyToManyAnnotationInfo> manyToManyMap, Map<String,Field> fieldMap) 处理ManyToMany注解
private void	processManyToManyMapping(org.apache.ibatis.session.Configuration configuration, String baseId, SupportJoinWrapper joinWrapper, List<org.apache.ibatis.mapping.ResultMapping> resultMappings) 处理多对多映射
private void	processOneToOneAnnotation(Collection<?> dataList, Map<String,JoinInterceptor.OneToOneAnnotationInfo> oneToOneMap, Map<String,Field> fieldMap) 处理OneToOne注解
private void	processOneToOneMapping(org.apache.ibatis.session.Configuration configuration, String baseId, SupportJoinWrapper joinWrapper, List<org.apache.ibatis.mapping.ResultMapping> resultMappings) 处理一对一映射

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.apache.ibatis.plugin.Interceptor

plugin, setProperties

字段详细资料

mybatisPlusJoinConfig

@Autowired(required=false)
private MybatisPlusJoinConfig mybatisPlusJoinConfig

MS_CACHE

private static final Map<String,Map<org.apache.ibatis.session.Configuration,org.apache.ibatis.mapping.MappedStatement>> MS_CACHE

缓存MappedStatement

构造器详细资料

JoinInterceptor

public JoinInterceptor()

方法详细资料

intercept

public Object intercept(org.apache.ibatis.plugin.Invocation invocation)
                 throws Throwable

指定者:

intercept 在接口中 org.apache.ibatis.plugin.Interceptor

抛出:

Throwable

createMappedStatement

private org.apache.ibatis.mapping.MappedStatement createMappedStatement(org.apache.ibatis.mapping.MappedStatement ms,
                                                                        SupportJoinWrapper joinWrapper,
                                                                        Class<?> classType)

创建新的MappedStatement

buildMappedStatementId

private String buildMappedStatementId(org.apache.ibatis.mapping.MappedStatement ms,
                                      SupportJoinWrapper joinWrapper,
                                      Class<?> classType)

构建MappedStatement ID

buildNewMappedStatement

private org.apache.ibatis.mapping.MappedStatement buildNewMappedStatement(org.apache.ibatis.mapping.MappedStatement ms,
                                                                          String id,
                                                                          SupportJoinWrapper joinWrapper,
                                                                          Class<?> classType)

构建新的MappedStatement

createResultMap

private org.apache.ibatis.mapping.ResultMap createResultMap(org.apache.ibatis.mapping.MappedStatement ms,
                                                            SupportJoinWrapper joinWrapper,
                                                            Class<?> classType)

创建ResultMap，处理并发情况

processOneToOneMapping

private void processOneToOneMapping(org.apache.ibatis.session.Configuration configuration,
                                    String baseId,
                                    SupportJoinWrapper joinWrapper,
                                    List<org.apache.ibatis.mapping.ResultMapping> resultMappings)

处理一对一映射

processManyToManyMapping

private void processManyToManyMapping(org.apache.ibatis.session.Configuration configuration,
                                      String baseId,
                                      SupportJoinWrapper joinWrapper,
                                      List<org.apache.ibatis.mapping.ResultMapping> resultMappings)

处理多对多映射

addResultMapSafely

private void addResultMapSafely(org.apache.ibatis.session.Configuration configuration,
                                org.apache.ibatis.mapping.ResultMap resultMap,
                                String id)

安全地添加ResultMap

buildResultMapId

private String buildResultMapId(org.apache.ibatis.mapping.MappedStatement ms,
                                SupportJoinWrapper joinWrapper,
                                Class<?> classType)

构建ResultMap ID

buildResultMappings

private List<org.apache.ibatis.mapping.ResultMapping> buildResultMappings(org.apache.ibatis.session.Configuration configuration,
                                                                          List<FieldMapping> fieldMappings,
                                                                          Class<?> clz)

构建结果映射

buildResultMapping

private org.apache.ibatis.mapping.ResultMapping buildResultMapping(org.apache.ibatis.session.Configuration configuration,
                                                                   FieldMapping fieldMapping,
                                                                   Class<?> clz)

构建单个结果映射

isUseMsCache

private boolean isUseMsCache()

processAnnotationMapping

private void processAnnotationMapping(Object result,
                                      Class<?> returnClass)

处理注解映射 (OneToOne 和 ManyToMany)

processOneToOneAnnotation

private void processOneToOneAnnotation(Collection<?> dataList,
                                       Map<String,JoinInterceptor.OneToOneAnnotationInfo> oneToOneMap,
                                       Map<String,Field> fieldMap)

处理OneToOne注解

processManyToManyAnnotation

private void processManyToManyAnnotation(Collection<?> dataList,
                                         Map<String,JoinInterceptor.ManyToManyAnnotationInfo> manyToManyMap,
                                         Map<String,Field> fieldMap)

处理ManyToMany注解

processFieldTransAnnotation

private void processFieldTransAnnotation(Collection<?> dataList,
                                         Map<String,JoinInterceptor.FieldTransAnnotationInfo> fieldTransMap,
                                         Map<String,Field> fieldMap)

处理FieldTrans注解 从子表中查询数据，提取指定字段并映射到当前对象的字段上

getFieldType

private Class<?> getFieldType(Class<?> clazz,
                              String fieldName)

获取字段类型

getListGenericType

private Class<?> getListGenericType(Field field)

获取List字段的泛型类型 使用MyBatis-Plus的GenericTypeUtils获取泛型类型

convertToVO

private Object convertToVO(Object source,
                           Class<?> targetClass)

将实体对象转换为VO对象 使用Spring的BeanUtils进行属性拷贝