Created by Jerry Wang, last modified on May 12, 2014

UI上的object component 用ID 来区分: 110056

用下列的代码能够根据ID 得到该component的其他三个ID:

data: i_comp type IBAP_DAT1,i_comp_det type IBAP_COMP2.
i_comp-instance = '110056'.
call function 'CRM_IBASE_COMP_GET_DETAIL'EXPORTINGi_comp = i_compIMPORTINGE_COMP_DET = I_comp_det.
WRITE: / i_comp_det-guid_comp.
WRITE: / i_comp_det-guid_compc.
WRITE: / i_comp_det-objnr.

在UI上修改description保存之后再call 一次，发现GUID_COMP发生了变化，但 guid_compc和objnr始终不变:

debug FM CRM_IBASE_COMP_GET_DETAIL的逻辑，发现guid_comp和guid_compc都是动态计算出来的:

guid_comp来自object component的in_recno field, 而guid_compc 来自objnr.

当修改Object component之后，会在DB里面将对应entry的VALTO 更新成change时的timestamp，同时插入以change timestamp作为valid from 插入一条新的entry. 两条entry的in_guid和in_objnr都保持不变，只有in_recno发生变化，因此CRM_IBASE_COMP_GET_DETAIL的最后输出里，guid_compc和objnr保持不变( time independent ), 而guid_comp则每次change都会发生变化。

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Created by Jerry Wang, last modified on May 12, 2014

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