Portal, Express Beta Version 6.1 Operating systems: i5/OS, Linux,Windows

Application parameters

Use the Parameters portlet to view and edit the parameters defined by a template for the applications and application components created from the template. From the drop-down menu of an application template that is listed in the Application Template Library, click Edit Template Parameters.

Each application template defines and stores the values of parameters used by the composite application and its components. Parameters specify the property values of the components that are instantiated by the application during runtime. The default value of a parameter can be provided by the application or a component, or it can use the value of another parameter of the same data type. If the source of the default value is the application or component, the parameter value is characterized as Self-defined. If the source of the default value is another parameter of the same data type, the parameter value is qualified by the name of the source parameter and its owner application or component, Application or Component name: parameter name.

Viewing parameters

Use the Parameters portlet to display the parameters defined by the template for the composite applications and components that will be instantiated during runtime. The parameters that are defined in the template and applied by applications created from the template vary with the application components deployed on the pages of the application. For each parameter listed, you can view its name and description, default value, and the source of the default value.

Editing parameters

Click the name of the parameter to display the Edit Parameter page. When you edit a parameter definition in the application template, you specify how its value is assigned: whether it is self-defined or uses the value of another parameter. You cannot delete parameters because they are provided by the components defined by the application template and used in instances of composite applications that are created from the template.

For more information about working with parameters in application templates, see the Help topics that are available after you select Edit Template Parameters from the menu of the application template.

Policy Selection Attribute

Every application template stores the value of the application parameter Policy Selection Attribute. The value of the Policy Selection Attribute that is set and stored in the application template is available for editing as a component property in particular applications created from the template. Each application is assigned a policy according to the value of the Policy Selection Attribute. The value of the Policy Selection Attribute is the name of the condition evaluated and applied by the policy rule for the application. You define values for the Policy Selection Attribute when you create or edit rules for application policies.

If your new application templates are based on Portal Blank Template, the default value of the Policy Selection Attribute is CompositeApp. This value assigns the main Composite Application policy to any applications that are created from Portal Blank Template. Consider creating application templates for each subset of applications that you want to manage with child policies. The new application policies that you create will be hierarchical specializations of the main Composite Application policy. Each child policy is based on a rule that uses the condition specified by the value of the Policy Selection Attribute.

For each new application template that you create, you can specify the value of the Policy Selection Attribute that assigns the child policy to all applications created from the template. The assigned policy specifies the application conditions that are monitored and reported to help you determine when to perform maintenance actions such as backing up, archiving, restoring, or deleting the application. To change the assigned policy, edit the value of the Policy Selection Attribute. You must type a value that has been specified as a condition in policy rules using CompositeApplication.PolicySelectionAttribute .