Calling components in another component

Hi experts,
I am calling component B, component C and component D in component A by component usage.
I have created 3 view containers in comp A and I have set the visibility property to null.
I have 3 buttons in same view. If I click on button1 it will display the view container1 (Comp B) by setting the visibility property.
Similarly I have done for other 2 button.
Is there any way to call the view (Components B,C and D) in component A to increase the performance?
Another question is:
When will be the use components get loaded into memory?Will it affect the performance if all the components get loaded initially?
Thanks in Advance.

>When will be the use components get loaded into memory?Will it affect the performance if all the components get loaded initially?
Declaring the component usage doesn't immediately instaniate the inner component. The component will be instantiated upon first usage of its context, first visibility within the window, or when explicity created via API calls.
For instance, quite often with the ALV you will explicity create the instance of the inner component usage so that you can access its API methods. You always put this block of code within a check to see if it is already active, as the data binding of the context might have already been processed:
****Access Component Usage - Create it if it hasn't already been created by framework
data: l_ref_cmp_usage type ref to if_wd_component_usage.
l_ref_cmp_usage =   wd_this->wd_cpuse_alv( ).
if l_ref_cmp_usage->has_active_component( ) is initial.
    l_ref_cmp_usage->create_component( ).
endif.
****Access Component Interface
data l_salv_wd_table type ref to iwci_salv_wd_table.
l_salv_wd_table = wd_this->wd_cpifc_alv( ).
There is garbage collection for component usages but it tends to work on the safe side. If you really want to release memory it is better to explicity destroy the component usage. For instance if you have a tabstrip, you might want to destroy inner component usages displayed in one tab when the user switches to a different tab.
data: l_cmp_usage type ref to if_wd_component_usage.
* delete f4 component
l_cmp_usage =   wd_this->wd_cpuse_f4_config_id( ).
if l_cmp_usage->has_active_component( ) = abap_true.
    l_cmp_usage->delete_component( ).
endif.

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Component calling methods on another component

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In the Repository's init() method:
<cfloop query="qDocuments">

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How I can call controller's functions from another component?

Hi again!
I make a few web Dynpro components, for example first for user-data processing, second - for project-data processing. In the controller of 1-st controller there is a function getUserById(). In the controller of 2-nd component I need such function. And I don't want to make a dublicate for this function in the controller of 2-nd component. Is there a way to call function in one component from another?

Hi,
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1. Intra Component communication: The two components must be in same DC(project).
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regards,
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Edited by: Siva Rama Krushna on Dec 19, 2007 10:07 AM

Component group type assignment in call components in JIS

Hi All
How Component group type assignment is done in call components ?
Edited by: mayuresh bhurke on Jan 20, 2012 8:25 PM

Hi Mayuresh bhurke,
How the system will does the job:
The system carries out this function automatically, each time a JIT call is received. In this way it assigns each call component transmitted to a components group type. The components group type then takes on the internal control of the call components.
With sequenced JIT calls for assemblies, the system assigns several call components to the same components group type. With the other call types the call components and the components group type form a logical unit and the system therefore assigns a different components group type to each call component.
In the components group determination the system compares whether the characteristics of the call components match a components group type. As soon as it can assign a call component, it continues with the next one. In the profile for the components group determination you can define with which priority the system should consider the various characteristics. The system determines the relevant characteristics of the call components as follows:
JIT customer
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Unloading point and assembly location
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Components group material
The JIT customer generally transmits the components group material with a call. You have several options for defining the components group material of the call component before the components group determination.
You can realize an individual components group material determination using a customer exit. This is particularly recommended for sequenced JIT calls for assemblies, due to the large number of variants.
If you use the process for discrete materials, you can transfer the material of the call components as a components group material.
If you use the process for discrete materials and exactly one components group material can be assigned to a call component, you can transfer the configurable material of the call component as a components group material. To do this you must have entered the configurable material in the material master of the call component in the tab page Basic data 2 in the field Cross plant conf.mat.
Production version
You can also assign the production version using a customer exit. The production version allows you to assign two otherwise equal call components to different components group types, to produce them on different production lines, for example.
There are also call types:
please follow the below link:
http://help.sap.com/saphelp_di46c2/helpdata/EN/7a/ad7d2b1e4c11d3b69c0000e82d81c3/content.htm
I hope you can find the need full information.
Regards,
Madhu.G

Callinfg ALV from another component

Hi all,
We have a main component in which on press of a button we need to show alv which is in another component.
I am trying to follow these steps but i need your inputs
1. I have declared the component which calls alv in used components
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Hi,
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Hi Friends ,
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2
3 data:
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>>> message x000(00).
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27
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Hi Shikha,
Declare an atrribute in Component Controller and use this to exchange the value from one component to another.
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Hi,
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<mx:TitleWindow xmlns:mx="
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<?xml version="1.0" encoding="utf-8"?>
<mx:TitleWindow xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" width="100%" height="100%"
xmlns:util="userinterfaces.util.*" title="File Upload">
<mx:Script>
<![CDATA[
import mx.collections.XMLListCollection;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.events.ProgressEvent;
import mx.controls.Alert;
import flash.net.FileFilter;
import flash.net.FileReference;
import flash.events.SecurityErrorEvent;
import mx.controls.Button;
import mx.controls.TextInput;
import mx.controls.ProgressBar;
import mx.core.Application;
import flash.net.URLRequest;
import flash.net.URLRequestMethod;
import mx.core.UIComponent;
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/>
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<mx:Button id="btnCancel" label="Cancel"
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<mx:ProgressBar width="200"
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id="prgBarUpload" mode="manual"/>
</mx:VBox>
</mx:TitleWindow>
Its not even showing any error , i dont know whats the
problem with
it.
Thanks for your help,
Mario.

If I understand, you want to display a popup Titlewindow from
within another popup TitleWindow? This is possible.
Simplify your code to get it working first.
Tracy

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