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SDO_DAS_ChangeSummary::getChangeType — Get the type of change made to an SDO_DataObject
本函数是实验性的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随 PHP 以后的发布而改变。使用本函数风险自担。
Get the type of change which has been made to the supplied SDO_DataObject.
The SDO_DataObject which has been changed.
The type of change which has been made. The change type is expressed as an enumeration and will be one of the following four values:
SDO_DAS_ChangeSummary::NONE
SDO_DAS_ChangeSummary::MODIFICATION
SDO_DAS_ChangeSummary::ADDITION
SDO_DAS_ChangeSummary::DELETION