A Comprehensive Guide to IBM WebSphere Host Publisher Version 3.5

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4. The output page is dynamically built including the obtained output variables.

5. The error page is called in case of an error.

10.2 Sample scenario

In this sample scenario, a previously created Integration Object is used to

develop an application using the Host Publisher Studio to generate the input,

output (execution) and error JavaServer Pages (JSPs). The Host Publisher

Studio provides a development environment where you can create Web

applications and manipulate the Integration Objects created in Host Access and

Database Access. It is useful to note that you are not required to use the Studio

to create your application. However, it is recommended for a quick and easy way

to initiate the development of applications.

These are the recommended steps to create an application using the Host

Publisher Studio:

Step 1: Create a new application

Launch the IBM WebSphere Host Publisher Studio and start a new application by

clicking File -> New Application..., as shown in Figure 10-2.

Figure 10-2 New application

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Step 2: Provide the application name

In this step, you provide a name for your application (see Figure 10-3) so that it

can be identified when you are ready to transfer and deploy it.

Figure 10-3 Naming the application

Step 3: Start building the application

As illustrated in Figure 10-4, there are two ways to start building your application.

Select the I prefer to start with data option if you are familiar with the Integration

Object input and output variables (properties) and want to create the input,

output and error pages. The second option allows you to start creating pages if

you already have a page layout for your application. In this sample scenario, the

option to start with data is selected.

Figure 10-4 Selecting how you want to start

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Step 4: Import the Integration Object

You need to import the Integration Object(s) that will be used for this new

application; to do so, click Import (see Figure 10-5) and select all the Integration

Objects you need.

Figure 10-5 Importing the Integration Object

Step 5: Define the Integration Object

After importing the Integration Object, define how it will be used. For this, select

the Integration Object and click Define (see Figure 10-6).

Figure 10-6 Defining how the Integration Object will be used

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At this time, the Host Publisher Studio knows which input and output properties

are required to be set (setters) and obtained (getters) for the defined Integration

Object.

Step 6: Output (execution) page name

In this step, Host Publisher Studio will start collecting information to create the

input and output (execution) JSPs. As shown in Figure 10-7, you are first

required to enter the name of the output page that will also invoke your

Integration Object.

Figure 10-7 Specifying the output page name

Step 7: Define input data

Host Publisher Studio has detected that the Integration Object has an input

property with name accountVar. This input property needs to be set prior to

invoking the Integration Object, therefore you are required to define how this

value should be obtained. In most cases, it will typically be requested using an

input page containing a form. As shown in Figure 10-8 on page 308, click Define

to proceed with this definition.

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Figure 10-8 Providing input data

Step 8: Input fields

In this step, you are required to define how the input fields are obtained. In this

sample scenario, there is only one field and it will be a new input field.

Figure 10-9 illustrates how the option is selected for a new input field.

Figure 10-9 New input field

Step 9: Create a new form

In this step, you are required to select whether you want to create a new form or

use an existing form if already created. Figure 10-10 on page 309 shows the

selection needed to create a new form.