IBM Branch Transformation Toolkit 5.1 Migration and Usage Guidelines

454 IBM Branch Transformation Toolkit 5.1 Migration and Usage Guidelines

Table 8-9 Swing components

8.4.4 Connecting the view to the operation

To link the client operation to the view, the following tasks need to be complete:

򐂰 Defining the fields in view, that will interact with the operation. This task was

completed when you set the DSE_dataName properties of the components in

the OperationPanel.

򐂰 Setting the operation attribute of the view with the client operation

instance.This too was done when you specified the DSE_operationName

property of the OperationPanel.

SpComboBox beanName:vbAccountNumber

DSE_dataName:AccountNubmer

DSE_dataNameForList:accountListData

SpTextField beanName:vbAmount

DSE_dataName:Amount

DSE_mandatory:true

DSE_autoTab:true

DSE_maxChar:5

DSE_formatter:FloatFormatter

SpLabel beanName:vbAccountBalance

DSE_dataName:AccountBalance

SpErrorList beanName:vbErrorList

SpButton beanName:vbWithdrawal

text:OK

DSE_type:ok

SpButton beanName:vbClose

text:Close

DSE_type:close

Swing beans Properties

JLabel text:Customer Name:

JLabel text:Select Account Nubmer:

JLabel text:Amount:

JLabel text:Available Balance:

JLabel text:Error Messages:

DSE visual beans Properties

Running H/F 1 455

򐂰 Notifying the view when the operation execution is finished. You may have

noticed that when carrying out visual composition, you were setting the

attribute DSE_dataName of the input and output components as the ID of the

fields from the operation context. This is all that you require to define which

fields will interact with the operation context.

In order to create a client operation instance, initialize the Branch Transformation

Toolkit environment. In this sample, since you are working in a client/server

environment, initialize the complete Branch Transformation Toolkit client

environment. To do this, use the initialize() method of the view that has been

automatically created.

1. Navigate to the class declaration of the WithdrawalView (right-click it and

select Open With → Java Editor), add a statement to import the contents of

the com.ibm.dse.base package, as shown in Example 8-40.

Example 8-40 Add import class

...

import java.io.BufferedInputStream;

import com.ibm.btt.dse.base.*;

import com.ibm.dse.clientserver.CSClientService;

...

2. Create a new method named initEnv() in the class WithdrawalView that

throws Exception. This method initializes the entire Branch Transformation

Toolkit client environment.The source code is shown in Example 8-41.

Example 8-41 Add method initEnv

...

private void initEnv() throws Exception{

String iniPath =

"http://127.0.0.1:9080/BTTBankAppClientWeb/dse/dse.ini";//$NON-NLS-1$

Context.reset();

Settings.reset(iniPath);

Settings.initializeExternalizers(Settings.MEMORY);

Context context= (Context)Context.readObject("workstationCtx");

System.out.println(context);

System.out.println(context.getService("CSClient"));

((CSClientService) context.getService("CSClient")).establishSession();

ClientOperation anOp =

(ClientOperation)DSEOperation.readObject("startupClientOp");

anOp.execute();

}

...

456 IBM Branch Transformation Toolkit 5.1 Migration and Usage Guidelines

3. Add a call to this method in initialize() at the top of the method. See

Example 8-42.

Example 8-42 Add method initEnv() into initialize()

//user code begin {1}

try{

initEnv();

}catch(Exception e){

System.out.println(e.toString());

}

//user code end

4. Use the refresh method to update the visual components at the end of the

method. See Example 8-43.

Example 8-43 Add refresh method into initialize method

// user code begin {2}

refresh();

// user code end

This step is necessary if you require interaction between the view

components and the operation when the operation execution is completed. In

this sample, the view should get the AccountBalance and the

TrxErrorMessage values when the operation finishes.

After you have completed step 3 and step 4, the initialize() method will look as

shown in Example 8-44.

Example 8-44 Initialize method

private void initialize() {

//user code begin {1}

try {

initEnv();

} catch (Exception e) {

// TODO Auto-generated catch block

System.out.println(e.toString());

}

//user code end

this.add(getSpLabel(), null);

this.add(getJLabel(), null);

this.add(getJLabel1(), null);

this.add(getSpComboBox(), null);

this.add(getJLabel2(), null);

this.add(getJLabel3(), null);

this.add(getJLabel4(), null);

this.add(getSpTextField(), null);

this.add(getSpButton(), null);