cn.crane4j.core.executor.handler

类 AbstractAssembleOperationHandler<T extends AbstractAssembleOperationHandler.Target>

java.lang.Object

cn.crane4j.core.executor.handler.AbstractAssembleOperationHandler<T>

类型参数:

T - target type

所有已实现的接口:

AssembleOperationHandler

直接已知子类:

OneToOneAssembleOperationHandler

public abstract class AbstractAssembleOperationHandler<T extends AbstractAssembleOperationHandler.Target>
extends Object
implements AssembleOperationHandler

This class serves as the top-level template class and defines the key steps required by most AssembleOperationHandler:
Object processing phase:

• collectToEntities(java.util.Collection<cn.crane4j.core.executor.AssembleExecution>): Expands the target objects to be operated on from the AssembleExecution and wraps them as AbstractAssembleOperationHandler.Target objects, which will be used for subsequent processing;
• introspectForEntities(java.util.Collection<T>): If the Container for the current operation is not specified, directly use the target objects as the data source for field mapping;

If the Container for the current operation is specified, it enters the data source preparation phase:

• getSourcesFromContainer(cn.crane4j.core.container.Container<?>, java.util.Collection<T>): Obtains the required data sources based on the objects to be processed;
• getTheAssociatedSource(T, java.util.Map<java.lang.Object, java.lang.Object>): Retrieves the associated data source object corresponding to the key value of the object to be processed from the data sources;

Finally, if the object has an associated data source object, the completeMapping(java.lang.Object, T) method is called to perform property mapping between them.

The implementation logic of this template class is based on the encapsulation of AbstractAssembleOperationHandler.Target, which may introduce unnecessary performance overhead.

作者:

huangchengxing

嵌套类概要

嵌套类

限定符和类型	类和说明
protected static class	AbstractAssembleOperationHandler.Target Target object to be processed.

构造器概要

构造器

构造器和说明
AbstractAssembleOperationHandler()

方法概要

限定符和类型	方法和说明
protected abstract Collection<T>	collectToEntities(Collection<AssembleExecution> executions) Split the AssembleExecution into pending objects and wrap it as AbstractAssembleOperationHandler.Target.
protected abstract void	completeMapping(Object source, T target) Complete attribute mapping between the target object and the data source object.
protected abstract Map<Object,Object>	getSourcesFromContainer(Container<?> container, Collection<T> targets) Obtain the corresponding data source object from the data source container based on the entity's key value.
protected abstract Object	getTheAssociatedSource(T target, Map<Object,Object> sources) Get the data source object associated with the target object.
protected void	introspectForEntities(Collection<T> targets) When the container is EmptyContainer, introspect the object to be processed.
void	process(Container<?> container, Collection<AssembleExecution> executions) Perform assembly operation.

从类继承的方法 java.lang.Object

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

构造器详细资料

AbstractAssembleOperationHandler

public AbstractAssembleOperationHandler()

方法详细资料

process

public void process(Container<?> container,
                    Collection<AssembleExecution> executions)

Perform assembly operation.

指定者:

process 在接口中 AssembleOperationHandler

参数:

container - container

executions - operations to be performed

collectToEntities

protected abstract Collection<T> collectToEntities(Collection<AssembleExecution> executions)

Split the AssembleExecution into pending objects and wrap it as AbstractAssembleOperationHandler.Target.

参数:

executions - executions

返回:

AbstractAssembleOperationHandler.Target

introspectForEntities

protected void introspectForEntities(Collection<T> targets)

When the container is EmptyContainer, introspect the object to be processed.

参数:

targets - targets

getSourcesFromContainer

protected abstract Map<Object,Object> getSourcesFromContainer(Container<?> container,
                                                              Collection<T> targets)

Obtain the corresponding data source object from the data source container based on the entity's key value.

参数:

container - container

targets - targets

返回:

source objects

getTheAssociatedSource

protected abstract Object getTheAssociatedSource(T target,
                                                 Map<Object,Object> sources)

Get the data source object associated with the target object.

参数:

target - target

sources - sources

返回:

data source object associated with the target object

completeMapping

protected abstract void completeMapping(Object source,
                                        T target)

Complete attribute mapping between the target object and the data source object.

参数:

source - source

target - target