org.springframework.beans

接口 Mergeable

所有已知实现类:

ManagedArray, ManagedList, ManagedMap, ManagedProperties, ManagedSet

public interface Mergeable

Interface representing an object whose value set can be merged with that of a parent object.

从以下版本开始:

2.0

作者:

Rob Harrop

另请参阅:

ManagedSet, ManagedList, ManagedMap, ManagedProperties

方法概要

限定符和类型	方法和说明
boolean	isMergeEnabled() Is merging enabled for this particular instance?
Object	merge(Object parent) Merge the current value set with that of the supplied object.

方法详细资料

isMergeEnabled

boolean isMergeEnabled()

Is merging enabled for this particular instance?

merge

Object merge(@Nullable
             Object parent)

Merge the current value set with that of the supplied object.

The supplied object is considered the parent, and values in the callee's value set must override those of the supplied object.

参数:

parent - the object to merge with

返回:

the result of the merge operation

抛出:

IllegalArgumentException - if the supplied parent is null

IllegalStateException - if merging is not enabled for this instance (i.e. mergeEnabled equals false).