Mergeable (Spring Framework 4.3.30.RELEASE API)

所有已知实现类:
ManagedArray, ManagedList, ManagedMap, ManagedProperties, ManagedSet, MockHttpServletRequestBuilder, MockMultipartHttpServletRequestBuilder
```
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

所有方法实例方法抽象方法
修饰符和类型	方法	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(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).