SEARCH VIEW:
Visiting any transaction information first requires a search.
We need to search the required business object, and then we can view its
information.
Let us build a search view, which will give us an ability to
search service contracts.
VIEW
A block that is used to display the certain information on
the WEB UI. In the entire component hierarchy view
comes at the bottom place.
Every view has one controller class. Generally we call it as
view implementation class. The class name generally ends with *IMPL suffix.
In order to display any view on web ui, it must be assigned
to either window or to VIEW SET ( here again VIEW SET must be assigned to the
WINDOW).
Open the component and click on component structure browser
and right click on VIEWS and select the view. We can see another option ‘CREATE
SEARCH PAGE’. This is a new feature available EHP 1. As we want to know the
concepts, choose just ‘CREATE’ option.
Enter view name and choose continue.
In the next step, we need to add the model node.
MODEL NODE:
Any context node that is based on any BOL entity, is called
Model node.
VALUE NODE:
Any context node that is not based on any BOL entity is
called VALUE NODE.
Here we will add model node because we have bol entity. Here
we are going to create search page. So we will select a BOL entity that will
help us to search the contracts. We will look for objects that belong to
dynamic search objects category in the one order MODEL.
Enter the context node name and choose the BOL entity as
shown below. Once you entered the
details choose continue.
BTQSrvCon is a dynamic search object used to find service
contracts. We can check it in the GENIL
MODEL BROWSER transaction in the ONEORDER component set , under the DYNAMIC
QUERY OBJECT node.
In the next step, we need to enter the value node. However
we are not dealing with any value node here, just press continue until you
reach the last step ‘SELECT VIEW TYPE’ as shown in the below screenshot. Select
the view type as EMPTY and complete the wizard. In the last complete step, it
will summarize the all details , that we have entered so far.
Then we will be asked to save the view. If we observe
carefully, we can see the framework will create certain classes.
Context node class.
ZL_ZTUTCOMP_SEARCHPAGE_CN00
Just double click the newly
created view, all the classes that were created will be presented in the tree
hierarchy. At bottom , we have context node class. This class will hold the
data for our view. We can see all attributes of BOL entity that we added under
this class. This class will have most important attributes and methods to
manipulate the data.
Context class.
ZL_ZTUTCOMP_SEARCHPAGE_CTXT
Every view will have one context class controller, ends with
*CTXT suffix. If there is any context
node exists, then it will be an attribute of this context class. Here we have
one context node SEARCH; we can see this node as property of above class. Just
double click on the context class.
View implementation class
ZL_ZTUTCOMP_SEARCHPAGE_IMPL.
This is main view controller and will be responsible for
handling all events raised in the view. The context class will be an attribute
of view controller. We can in the below
screen shot the context class became an attribute with the name TYPED_CONTEXT.
So in order to access any context node from a method in the
view controller, generally we see the below syntax.
ME->TYPED_CONTEXT->SEARCH (here ME refers instance of
view controller class). You can find
this syntax in almost all UI components.
So far we have designed just controllers. We did not design
anything that user can see on the screen that is layout.
We will design the layout in the next
chapter.
I am not able to double click on the view IMPLEMENTATION CLASS. It is saying object type doesnot exist. Please help me so that i can see it.
ReplyDeleteGo out and come back by typing transaction BSP_WD_CMPWB and enter component name. Sometimes we have issue while loading component.
DeleteHello,
ReplyDeleteIn View Implementation class i can't find attribute TYPED_CONTEXT. I have restarted transaction BSP_WD_CMPWB but still I could not find. Please help me
Hello Sampath,
DeleteCheck if you have unchecked filter option.
If you are getting an error "BOL entity does not exist" on the Add Model Node section, make sure you have exited and gone back in after adding and saving your Model Node from the previous tutorial/page.
ReplyDeletecan u explain search empty view configaration in advanced search
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ReplyDelete