Using the Application Explorer

The Application Explorer is available to all developer roles. To show the rules in your application:

1. If your access group provides access to more than one application, select the application of interest using Switch Application > application name from the Application menu. BYRNB 2/16/10
2. From the Application menu, select Switch Work Pool > work pool nameBYRNB 2/16/10 to select a work pool name. The name appears in the workspace.
3. Locate the Explorer Items menu on the left side of the Designer Studio window.
4. Select Application Explorer from the picker.
5. Use the drop-down list to select a class that is to be the root of the tree structure.
   The classes displayed in the drop-down list contain one or more best bets at the top. A Best Bet is a class in your application that is the Applies To key part of one or more rules.

Through preferences, you can control:

• Whether rule names (the final key part) or their Short Description text appears
• Which class appears as the top-level of the tree structure for any selected work pool PROJ-118
• Which additional RuleSets to include in the tree structure for any selected work pool
• Where in the key structure the rules that do not have an Applies To key part appear

See Setting Application Explorer preferences.

The tree contains nodes that correspond to the category of rules they contain. Each node contains several types of rules, and then individual instances of each rule type in the deepest level. Each node only appears if it is not empty.

Rule Categories:

Application Definition		Data Model
Decision		Integration (and others, for the moment)
Process		Reports
SysAdmin		Technical
User Interface

Within each rule type node, the following icons represent individual rules.

• — Identifies the name found in one or more than one rules that has an Applies To key part that matches the work type or embedded class.
• — Identifies a circumstance-qualified rule. Expand this icon to show the base rule identified by an icon named Base and the circumstanced rule.
• — Identifies a rule that is circumstanced either by a single property or a multivariate circumstance. A single-property circumstance displays this expression: .property=value. A multivariate circumstance displays this expression: CircumstanceTemplate rule=CircumstanceDefinition rule.
• — Identifies a rule that is circumstanced by a date property which displays this expression: .DateTime property=datetime value. This icon also identifies a rule that is qualified by a date range, which displays this expression: Starting datetime value Ending datetime value.
• — Marks a property that is the target property of a Declare Expression rule. C-2064
• — Marks a starter flow rule, one that creates a new work object. You can start this flow by clicking the icon.

For properties with a mode other than Single Value, an icon indicates the mode. The following modes are most common:

• — Marks a property with mode Value List.
• — Marks a property with mode Value Group.
• — Marks an embedded Page mode property. C-2042Click the plus icon to expand the subtree of embedded properties. Click the minus sign to collapse the subtree.
• — Marks a Page List property. C-2042Click the plus icon to expand the subtree of embedded properties, or the minus sign to collapse the subtree.
• — Marks a Page Group property. C-2042Click the plus icon to expand the subtree of embedded properties, or the minus sign to collapse the subtree.

Use these operations on the tree structure:

• Click a plus sign to expand the display and view the subtree beneath a node. Click a minus sign to collapse a portion of the tree.
• Click a work type name to list the flow rules for that work type in the workspace.
• Click a Rule Category icon to open the New dialog box to create a rule of the selected type. If the rule type requires an Applies To key part, the Applies To key part of the currently selected rule appears as a default. C-1969
• For nodes labeled with a dot (), click the rule name or label to open a rule with that name into the workspace. Because multiple rules in your application may have common final key parts, this operation uses rule resolution based on your current RuleSet list to determine which rule to open. The rule opened may be circumstance or time-qualified, or may be an ancestor or sibling of the rule you seek. If the rule opened is not the one you need, click the toolbar Related Rules button () to choose another rule.
• Right-click to display a context menu for the rule. The choices that appear depend on the rule and your capabilities.
• Select an Applies To class from the selection list to see the structure of rules that have that class as the first key part.

When you open or operate on a rule presented in the Application Explorer, Process Commander uses rule resolution to find the highest rule on your RuleSet list that you can execute. However, the tree structure in the Application Explorer presents all versions of rules in a RuleSet, not those you can execute. In unusual situations, the Application Explorer display may include a rule that you cannot execute.

When working in Visio you can add new flow shapes by dragging rule instances from the Application Explorer and dropping them onto the diagram. Click the icon to select the rule.

You can drag and drop rules of these types onto Visio diagrams. Proj-179, GRP-2259 v6.1 For an example, see Pega Developer Network article PRKB-26016 How to drag rules from the Application Explorer into shapes on a Visio flow diagram.

You can (although not recommended) use an activity in a Utility shape that is not a Utility type (see table above). Doing so displays a warning message in the Utility Properties panel. The shape does not affect flow processing. Here is an example of a Validate activity:

You can drop some types of rule instances on a connector and automatically re-attach and create new arrows connecting the new shape to existing shapes. See Flow form - Editing in Visio — Connectors and flow actions.

Select a text value and right-click to access a context menu.

Depending on the type of the rule you select and other factors, a context menu can include the following menu options:

Menu item	Result
Clone a Class Group	Starts a wizard to copy the classes in a class group. See How to clone a class group. 5.4 TASK-1391 PROJ-787 WHEN DOES THIS APPEAR?
Collapse	Collapses the subtree below the selected node.
Delegate	Delegates the rule; this action is equivalent to clicking the Favorites toolbar button (). C-2252
Delete	Deletes the rule. Available only for rules in top-level classes that belong to unlocked RuleSet versions. C-1969 (If the rule is checked out to you, the checked-out rule opens; the system asks you to confirm the deletion.)
Define Expression	For properties where the expression icon () is not present, creates the Declare Expression rule associated with this property at the current clipboard context. C-2064
Define Properties	Starts the Define Properties wizard using the current work type or class as an input. See About the Define Properties wizard. C-2269
Definition	Opens the class rule form. This menu item appears only when the selected item is a class.
Expand	Expands a Page, Page List, or Page Group property to display the subtree of its embedded properties.C-1969
Favorites	Opens a form allowing you to add the selected rule to your set of favorites. See favorites.
Filter by RuleSet	Opens a form allowing you to select RuleSets from those on your RuleSet list. After you click Submit, the tree substructure for the current class is refreshed to show only those rules that belong to the selected RuleSets. 5.5 GRP-458 This change remains in force until you use this menu choice again for this class, or log off. A check mark by the menu item indicates that filtering is in force for the selected class. Filtering affects only the Application Explorer display of the selected class; it does not affect the display of subclasses that are derived from this class. Press the F5 key to refresh the display and remove all filtering. The Filter by RuleSet menu item appears only when the selected item is a class.
Inheritance	Starts the Class Inheritance display for the class in the Applies To key part of the selected rule. See About the Class Inheritance display.
Index Property	Starts a wizard to build a Declare Index rule for the selected embedded property within a Page, Page List, or Page Group property. Requires special database privileges. See About the Declarative Index wizard. Proj-840 5.4
New > category > type	Create a new rule, using the selected class as the Applies To key part. This menu item appears only when the selected item is a class.
Open Expression	For properties where the expression icon () is present, opens the Declare Expression rule associated with this property and context. C-2064
Preview	Presents a preview of the runtime appearance of the rule. This action is equivalent to clicking the Preview toolbar button (). C-2252
Related Rules	Presents a second-level menu identifying other rules that related to this one — for example, circumstance-qualified, time-qualified, or checked out. Choose an item in the Related Rules submenu to open it. See Working with the Related Rules menu. C-2444
Rename Class	Starts a wizard to rename the rules that apply to a class. See About the Rename a Class wizard. 5.4 TASK-1391 PROJ-787 (Appears only for class rules.)
Save As	Opens the Save As dialog box, so you can copy the rule. C-1969
Show Calls	For activities, displays the interactive Show Calls tree, which identifies called activities. See Activity form — Completing the Steps tab — Show Calls button. C-1107
Structure	Displays the Class Structure diagram that includes this class. See About the Class Structure viewer.
Switch Class	Appears for classes only. Makes the selected class the base class for the Application Explorer display.
Refactor	Starts the Refactor Rules tool, to allow you to copy rules with a specific Applies To class (optionally including descendent classes) from one RuleSet into another RuleSet. See About the Refactor Rules tool. GRP-212 5.5 This menu item appears only when the selected item is a class.
Refresh RuleSet	Updates the Application Explorer display to reflect rules recently created (or renamed or deleted) by other developers in the RuleSet that contains the selected rule. (Rules you create, rename, or delete are always visible.)
Refresh All	Updates the Application Explorer display to reflect rules recently created (or renamed or deleted) by other developers. (Rules you create, rename, or delete are always visible.) C-1969
Run	Opens the rule and starts the unit test of the rule. This action is equivalent to clicking the Run toolbar button (). C-2252
View > Applicable Rules	Produce a report, in a separate window, of all rules that have the selected class as the Applies To key part, summarized by rule type. This menu item appears only when the selected item is a class. 5.5 GRP-458?
View > category > Type	List rules of a specific rule type that have the selected class as the Applies To key part. This menu item appears only when the selected item is a class.
View > INSTANCES > View	Lists instances of the class (and subclasses). This menu item appears only when the selected item is a class.
View > INSTANCES > Pop-Up	Lists instances of the class (and subclasses), in a separate window. This menu item appears only when the selected item is a class.

When you open or operate on a rule presented in the Application Explorer, Process Commander uses rule resolution to find the highest rule on your RuleSet list that you can execute. However, the tree structure in the Application Explorer presents all versions of rules in a RuleSet, not those you can execute. In unusual situations, the Application Explorer display can include a rule that you cannot execute.

To create a rule in your application:

1. Determine to which work type the new rule is to belong. (That is, determine the Applies To key part.) Locate that node in the tree structure.
2. Click the category icon next to that work type to access a list of categories.
3. Click a category name to see the types in that category.
4. Select a rule type. The New dialog box appears.

You can also choose New from a right-click context menu at the category level:

1. Determine to which work type the new rule belongs. (That is, determine the Applies To key part.) Locate that node in the tree structure.
2. Locate the category for the new rule. Click the category icon ( for example) next to that work type to access a list of rule types.
3. Select a rule type. The New dialog box appears

Which rules the Application Explorer presents depends on your current application, a work pool, and preferences. In some situations, the Application Explorer display may include rules that you do not consider part of the application, or may exclude others you expect. revised v5.1

• The Application Explorer includes rules for RuleSets listed in the application rule for the application name identified on the Designer Studio header. It also includes the Local Customization RuleSet, identified on the Settings tab of your access group. To review this collection of RuleSets, select [Developer Name Menu] > Application. ZEGAM 02/18/2010
• If you have associated additional RuleSets to a work pool for using the App Explorer button (on the Edit group of the Preferences panel), rules from these RuleSets also appear.
• The Application Explorer does not include rules checked out to you, or rules in RuleSets listed in the Production RuleSets array of the Access tab.
• Rules from RuleSet versions listed in the Requestor Type data instance, Organization data instance, or Division data instance are not included, (unless they also appear in the application rule).
• Rules from RuleSet versions listed as a prerequisite application rule in the application rule are not included.

The Application Explorer display filters by RuleSet but not by version. In some cases, the display can include rules in versions higher than the highest version to which you have access. It can also include blocked rules and rules with major versions lower than the current major version. You may not be able to open such rules or execute them. ZELEK 10/7/04, 7/7/05

Operation of the Application Explorer uses information in a view of the PegaRULES database named pr4_rule_summary, corresponding to the class Data-Rule-Summary. SR-437 SR-121

In unusual cases, the developer can select a work pool that does not match (belong to) the current application. In this case, the Application Explorer includes all rules from the RuleSets that use the work pool's RuleSet Version as a pre-requisite. BUG-7502 ZELEK Rejected