topic Re: Build a tree with recursion in Application Development and Automation Discussions

Build a tree with recursion

Former Member — Tue, 06 Jul 2010 06:31:09 GMT

I need to Create a tree and with recursion (not to use SAP FM)

and i have a tree like the following

assume i have a root like

root is level 1 -> customer

child level 2 -> like contact person & address

child level 3 like visiting hours (contact person ) & Email address (adress )

e.g. of the table that i need to provide as output is

item parent_key child_key

customer 0001

contant person 0001 0002

address 0001 0002

vist 0002 0003

email 0002 0003

etc...

let say i get as input always the root and i check for his child and for this node i

look for his child etc how can i provide a table like the above table

Thanks and Regards

James

Former Member — Wed, 07 Jul 2010 12:26:21 GMT

Hi,

build your tree step-by-step:

-root node is always shown -> initially add it to the node table of your alv-tree

->user expands root node

->event expand_no_children has to be handled

->check which node threw that event

->if root node, select all persons

->add the person nodes to your alv-tree node-list, as parent use the root node

->refresh alv tree

->user expands person-node

->event expand_no_children has to be handled

->check which node threw that event

->if person node, select all visiting hours

->add the visiting hour nodes to your alv-tree node-list, as parent use the person node

->refresh alv tree

Greetings,

dsp