You can code conditional WebSphere TX map logic within map rules using the PRESENT function, which tests to see if a particular data object is found in a data structure.
可以在映射规则中使用present函数编写有条件的WebSphereTX映射逻辑，这个函数检查在数据结构中是否可以找到某个数据对象。
You can code conditional WebSphere TX map logic within map rules using the PRESENT function, which tests to see if a particular data object is found in a data structure.
可以在映射规则中使用present函数编写有条件的WebSphereTX映射逻辑，这个函数检查在数据结构中是否可以找到某个数据对象。
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