top.xiajibagao.crane.jackson.impl.handler

类 NullNodeOperateHandler

java.lang.Object

top.xiajibagao.crane.core.handler.AbstractOperateHandler

top.xiajibagao.crane.jackson.impl.handler.AbstractJacksonNodeOperateHandler

top.xiajibagao.crane.jackson.impl.handler.NullNodeOperateHandler

所有已实现的接口:

Comparable<Orderly>, org.springframework.core.Ordered, OperateHandler, Orderly, OperateProcessorComponent, Operator, SourceReader, TargetWriter

@ProcessorComponent(value="JSON_BEAN")
public class NullNodeOperateHandler
extends AbstractJacksonNodeOperateHandler

用于处理null值或NullNode节点，具有最高的优先级。 当待读取的数据源或待写入的待处理对象为null时，优先使用该节点处理， 避免后续节点被无意义的反复调用。

作者:

huangchengxing

字段概要

从类继承的字段 top.xiajibagao.crane.jackson.impl.handler.AbstractJacksonNodeOperateHandler

objectMapper

从类继承的字段 top.xiajibagao.crane.core.handler.AbstractOperateHandler

operateProcessor, operateProcessorComponentSign

从接口继承的字段 top.xiajibagao.crane.core.operator.interfaces.OperateProcessorComponent

OPERATE_GROUP_JAVA_BEAN, OPERATE_GROUP_JSON_BEAN

从接口继承的字段 top.xiajibagao.crane.core.helper.Orderly

ORDERLY_COMPARATOR

从接口继承的字段 org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

构造器概要

构造器

构造器和说明
NullNodeOperateHandler(com.fasterxml.jackson.databind.ObjectMapper objectMapper, OperateProcessor operateProcessor, String... defaultRegisterGroups)

方法概要

限定符和类型	方法和说明
int	getOrder()
com.fasterxml.jackson.databind.node.NullNode	readFromSource(Object source, PropertyMapping property, Operation operation)
boolean	sourceCanRead(Object source, PropertyMapping property, Operation operation)
boolean	targetCanWrite(Object sourceData, Object target, PropertyMapping property, AssembleOperation operation)
void	writeToTarget(Object sourceData, Object target, PropertyMapping property, AssembleOperation operation)

从类继承的方法 top.xiajibagao.crane.jackson.impl.handler.AbstractJacksonNodeOperateHandler

findNode, findNodeName, getTranslatedKeyPropertyName, translatePropertyName

从类继承的方法 top.xiajibagao.crane.core.handler.AbstractOperateHandler

getOperateProcessor, getOperateProcessorComponentSign, getRegisterGroups, isRegistrable

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 top.xiajibagao.crane.core.helper.Orderly

comparator, compareTo, getActualOrder

构造器详细资料

NullNodeOperateHandler

public NullNodeOperateHandler(com.fasterxml.jackson.databind.ObjectMapper objectMapper,
                              OperateProcessor operateProcessor,
                              String... defaultRegisterGroups)

方法详细资料

getOrder

public int getOrder()

sourceCanRead

public boolean sourceCanRead(@Nullable
                             Object source,
                             PropertyMapping property,
                             Operation operation)

readFromSource

public com.fasterxml.jackson.databind.node.NullNode readFromSource(@Nullable
                                                                   Object source,
                                                                   PropertyMapping property,
                                                                   Operation operation)

targetCanWrite

public boolean targetCanWrite(@Nullable
                              Object sourceData,
                              @Nullable
                              Object target,
                              PropertyMapping property,
                              AssembleOperation operation)

writeToTarget

public void writeToTarget(@Nullable
                          Object sourceData,
                          @Nullable
                          Object target,
                          PropertyMapping property,
                          AssembleOperation operation)