文本成果2015培训17.tabletree-recursive node

1、案例十七: Table:Treetable（TreeByKeyTableColumn）-Recursive Node一：需求Table 中进行如下的显示：1Edison_tc Tang canMSN：edi二：实现1. Context其中，一个recursive node 重用Destination 这一个节点。2. UI只需要看 这个 master column2Edison_tc Tang canMSN：edi同 byKeyTableColumn，绑定好 children, expanded, isLeaf。同时，这里，的 T1 显示为Destination 的 text3Edison_t

2、c Tang canMSN：edi3. Init:初始状态，第一层4Edison_tc Tang canMSN：edimethod WDNIT .DATA lt_connectionsTYPEnet310_t_con. DATA ls_connectionsTYPEnet310_s_con.DATA lo_nd_destination TYPE REF TO if_wd_context_node. DATA lo_el_destination TYPE REF TO if_wd_context_element. DATA lo_nd_connection TYPE REF TO if_wd_c

3、ontext_node.DATA ls_destination TYPE wd_this-element_destination. DATA lt_connection TYPE wd_this-elements_connection. DATA ls_connection TYPE wd_this-element_connection.* read related connections clear:ls_connections. ls_connections-CITYFROM = FC-1. ls_connections-CITYTO = TC-1. ls_connections-CARR

4、ID = CAID-1. ls_connections-CONNID = COID-1.append ls_connections to lt_connections. clear:ls_connections.ls_connections-CITYFROM = FC-1. ls_connections-CITYTO = TC-1. ls_connections-CARRID = CAID-2. ls_connections-CONNID = COID-2. append ls_connections to lt_connections. clear:ls_connections.ls_con

5、nections-CITYFROM = FC-1.它的效果就是：3.第二层第三层，以及多层5Edison_tc Tang canMSN：edi参数CONTEXT_ELEMENTimportingIF_WD_CONTEXT_ELEMENT method ONACTIONLOAD_DESTINATIONS .ls_connections-CITYTO = TC-2. ls_connections-CARRID = CAID-1. ls_connections-CONNID = COID-1. append ls_connections to lt_connections. clear:ls_con

6、nections.ls_connections-CITYFROM = FC-1. ls_connections-CITYTO = TC-3. ls_connections-CARRID = CAID-1. ls_connections-CONNID = COID-1. append ls_connections to lt_connections.get reference to context node DESTINATIONlo_nd_destination=wd_context-get_child_node(wd_this-wdctx_destination ).define nodes

7、 and related itemsLOOPt_connectionsO ls_connections.IF ls_connections-cityto ls_destination-text. ls_destination-text = ls_connections-cityto.lo_el_destination=lo_nd_destination-bind_structure(new_item= ls_destinationset_initial_elements = abap_false ).lo_nd_connection=lo_el_destination-get_child_no

8、de(wd_this-wdctx_connection ).CLEAR lt_connection.ENDIF.CONCATENAs_connections-carrid ls_connections-connid O ls_connection-text SEPARATED BY space.lo_nd_connection-bind_structure( new_item= ls_connectionset_initial_elements = abap_false ).ENDLOOP.endmethod.6Edison_tc Tang canMSN：ediDATA lt_connecti

9、onsTYPEnet310_t_con. DATA ls_connectionsTYPEnet310_s_con.DATA lo_nd_destination_next TYPE REF TO if_wd_context_node. DATA lo_el_destination_next TYPE REF TO if_wd_context_element. DATA lo_nd_connectionTYPE REF TO if_wd_context_node.DATAls_destination_nextTYPEwd_this-element_destination_next.DATA lv_

10、cityfromTYPEs_city.DATA lt_connectionTYPEwd_this-elements_connection. DATA ls_connectionTYPEwd_this-element_connection.get selected destination city. This will be the departure city for the next connectioncontext_element-get_attribute( EXPORTING name = TEXTIMPORTING value = lv_cityfrom ).read relate

11、d connections for this departure city case lv_cityfrom.* 2nd levelWHEN TC-1.clear:ls_connections. ls_connections-CITYFROM = TC-1.ls_connections-CITYTO = TC-1-SUB1. ls_connections-CARRID = TC-1-SUB1-CAID-1. ls_connections-CONNID = TC-1-SUB1-COID-1. append ls_connections to lt_connections. clear:ls_co

12、nnections.ls_connections-CITYFROM = TC-1. ls_connections-CITYTO = TC-1-SUB1. ls_connections-CARRID = TC-1-SUB1-CAID-2. ls_connections-CONNID = TC-1-SUB1-COID-2. append ls_connections to lt_connections. clear:ls_connections.ls_connections-CITYFROM = TC-1. ls_connections-CITYTO = TC-1-SUB2. ls_connect

13、ions-CARRID = CAID-1. ls_connections-CONNID = COID-1. append ls_connections to lt_connections.WHEN TC-2.clear:ls_connections. ls_connections-CITYFROM = TC-2.ls_connections-CITYTO = TC-2-SUB1. ls_connections-CARRID = CAID-1. ls_connections-CONNID = COID-1. append ls_connections to lt_connections. cle

14、ar:ls_connections.ls_connections-CITYFROM = TC-2. ls_connections-CITYTO = TC-2-SUB2. ls_connections-CARRID = CAID-1. ls_connections-CONNID = COID-1. append ls_connections to lt_connections.WHEN TC-3.clear:ls_connections. ls_connections-CITYFROM = TC-3.ls_connections-CITYTO = TC-3-SUB1. ls_connection

15、s-CARRID = CAID-1. ls_connections-CONNID = COID-1. append ls_connections to lt_connections. clear:ls_connections.ls_connections-CITYFROM = TC-3. ls_connections-CITYTO = TC-3-SUB2. ls_connections-CARRID = CAID-1. ls_connections-CONNID = COID-1.7Edison_tc Tang canMSN：ediappend ls_connections to lt_con

16、nections.* 3rd levelWHEN TC-3-SUB2.clear:ls_connections.ls_connections-CITYFROM = TC-3-SUB2. ls_connections-CITYTO = TC-3-SUB2-sub1. ls_connections-CARRID = CAID-1. ls_connections-CONNID = COID-1.append ls_connections to lt_connections. clear:ls_connections.ls_connections-CITYFROM = TC-3-SUB2. ls_co

17、nnections-CITYTO = TC-3-SUB2-sub2. ls_connections-CARRID = CAID-2. ls_connections-CONNID = COID-2.append ls_connections to lt_connections. endcase.*get reference to context node DESTINATION_NEXTsince this is a recurnode, it can be created multiple times in multiple levelsif this node has not been cr

18、eated yet, it will be created automatically by the frameworkthe componenterface does not contain a constant with the nodes name!lo_nd_destination_next=context_element-get_child_node( DESTINATION_NEXT ).*define nodes and related itemsLOOPt_connectionsO ls_connections.IF ls_connections-cityto ls_destination_next-text. ls_dest