io.manbang.ebatis.core.response

接口 ResponseExtractor<T>

所有已知子接口:

BulkResponseExtractor<T>, ConcreteResponseExtractor<T,R>, DeleteByQueryResponseExtractor<T>, DeleteResponseExtractor<T>, IndexResponseExtractor<T>, MetricSearchResponseExtractor<T>, MultiGetResponseExtractor<T>, MultiSearchResponseExtractor<T>, SearchResponseExtractor<T>, UpdateByQueryResponseExtractor<T>, UpdateResponseExtractor<T>

所有已知实现类:

AggregationListResponseExtractor, AggregationMapResponseExtractor, AggregationsResponseExtractor, AgvAggResponseExtractor, ArrayDocumentExtractor, ArrayListSearchResponseExtractor, ArrayMultiGetResponseExtractor, ArrayMultiSearchResponseExtractor, BoolArrayMultiSearchResponseExtractor, BooleanArrayMultiSearchResponseExtractor, BooleanBulkResponseExtractor, BooleanDeleteResponseExtractor, BooleanIndexResponseExtractor, BooleanListMultiSearchResponseExtractor, BooleanUpdateResponseExtractor, CardinalityAggResponseExtractor, DocumentExtractor, DocumentPageExtractor, GetResultUpdateResponseExtractor, ListArraySearchResponseExtractor, ListMultiSearchResponseExtractor, MaxAggResponseExtractor, MinAggResponseExtractor, NoDocumentExtractor, PageArrayMultiSearchResponseExtractor, PageMultiSearchResponseExtractor, RestStatusResponseExtractor, ResultResponseExtractor, ScrollResponseExtractor, SingleDocumentExtractor, StringIndexResponseExtractor, SumAggResponseExtractor, TotalHitsArrayMultiSearchResponseExtractor, TotalHitsBasicArrayMultiSearchResponseExtractor, TotalHitsListMultiSearchResponseExtractor, TotalHitsSearchResponseExtractor, ValueCountAggResponseExtractor, VoidResponseExtractor

函数接口:

这是一个函数接口, 因此可用作 lambda 表达式或方法引用的赋值目标。

@FunctionalInterface
public interface ResponseExtractor<T>

从以下版本开始:

2019/12/24 11:58

作者:

章多亮

方法概要

限定符和类型	方法和说明
default void	catchException(Exception ex) 异常处理，如果降级使能的话，此方法就不调用，直接调动 fallback(Exception)
default T	empty() 用于调试，不实际调用ES
T	extractData(org.elasticsearch.action.ActionResponse response) 提取响应，转为是业务实体
default T	fallback(Exception ex) 如果响应有异常，执行降级操作
default boolean	fallbackEnabled() 判断提取器是否启用fallback
default <R extends org.elasticsearch.action.ActionResponse> R	narrow(org.elasticsearch.action.ActionResponse response, Class<R> responseClass)
default boolean	validate(org.elasticsearch.action.ActionResponse response) 验证响应是否正确

方法详细资料

narrow

default <R extends org.elasticsearch.action.ActionResponse> R narrow(org.elasticsearch.action.ActionResponse response,
                                                                     Class<R> responseClass)

extractData

T extractData(org.elasticsearch.action.ActionResponse response)

提取响应，转为是业务实体

参数:

response - 响应

返回:

实体

validate

default boolean validate(org.elasticsearch.action.ActionResponse response)

验证响应是否正确

参数:

response - 响应返回值

返回:

如果响应正常，返回true

empty

default T empty()

用于调试，不实际调用ES

返回:

空值

catchException

default void catchException(Exception ex)

异常处理，如果降级使能的话，此方法就不调用，直接调动 fallback(Exception)

参数:

ex - 任意异常

fallbackEnabled

default boolean fallbackEnabled()

判断提取器是否启用fallback

返回:

如果启用fallback，返回true

fallback

default T fallback(Exception ex)

如果响应有异常，执行降级操作

参数:

ex - 降级是发生的异常

返回:

降级返回值