枫芸志

【Dynamics AX】判断对象是否是某个类的子类实例

调用SysDictClass类的两个函数

static boolean isSuperclass(classId  _id, classId  _potentialAncestorId)
static boolean isEqualOrSuperclass(classId  _id, classId  _potentialAncestorId)





实例代码

SalesTableType          stt;
SalesTableType_Journal  stt_j;
;

// This is true as stt is an ''instance'' of SalesTableType
if (SysDictClass::isEqualOrSuperclass(classidget(stt), classnum(SalesTableType)))
{
    // Code here will be run
}

// This is true as stt_j is a ''subclass'' of SalesTableType
if (SysDictClass::isEqualOrSuperclass(classidget(stt_j), classnum(SalesTableType)))
{
    // Code here will be run
}

// This is true as stt_j is an ''instance'' of SalesTableType_Journal
if (SysDictClass::isEqualOrSuperclass(classidget(stt_j), classnum(SalesTableType_Journal)))
{
    // Code here will be run
}

// This is FALSE as stt is NOT an instance or subclass of SalesTableType_Journal
if (SysDictClass::isEqualOrSuperclass(classidget(stt), classnum(SalesTableType_Journal)))
{
    // Code here will NOT be run
}

参考：Determining if an object is a subclass




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标签： Dynamics AX
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