SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析

For project reason I need to figure out the logic how the field list is assembled when folder “Attributes” for a given context node is expanded in CRM WebClient UI workbench:


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


Debugging entry point is CL_BSP_WD_GUI_LIST_TREE~ON_EXPAND_NO_CHILDREN:


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


There are three kinds of fields which will appear under “Attributes” folder:


(1) direct attribute


get the public method list of context node class with naming convention that method name starts with GET_, and have one importing parameter ATTRIBUTE_PATH and one returning parameter VALUE.


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


And then extract the attribute name and stored it to internal table lt_direct_attribute.


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


Once the direct attribute of the current context node class has been extracted, there is a recursive call with the same extraction logic on the super class.


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


Since I am using UI component BT116H_SRVO, context node BTADMH to debug, the inheritance hierarchy from children to parent in this example is:

CL_BT116H_S_DETAILS_CN00 -> CL_CRM_UIU_BTADMINH_CN -> CL_CRM_UIU_BT_EASYCNDENTRY_FCN -> CL_BSP_WD_CONTEXT_NODE -> CL_BSP_MODEL

For example, there is a method GET_BILL_BLOCK_STATUS with the specified signature,


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


so BILL_BLOCK_STATUS is regarded as one direct attribute for this context node:


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


(2) implicit attribute

Retrieved from method get_implicite_cnode_attr,


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


Attributes defined in DDIC structure CRMST_ADMINH_BTIL are regarded as implicit attribute.


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


This structure is bound to context node BTAdminH in Genil model editor.


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


(3) AET attribute ( Application Enhancement Tool )


In fact AET attribute could be regarded as a special kind of implicit attribute as it is physically appended to EEW structure just the same way as implicit attribute. AET fields are retrieved via method get_extension_cnode_attr:


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


Those fields are retrieved with API cl_axt_uif_access=>get_ext_attributes and marked with prefix EXT in UI component workbench:


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析


SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析

You can use the following report to print out the attribute list of a given UI component’s context node:

SAP WebClient UI开发工具中attribute文件夹展开的实现原理分析

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