Real Use Cases

Use Case: Build

Section: Main

Use case: Build
Actors: Expert
Purpose: Create and fill a structured matcher with expert knowledge.
Overview: An expert builds a structured matcher tree by building individual simple matcher and adding them to tree structure. During the building of the simple matcher, the expert creates and arranges the questions in a manner that represents his knowledge.
Type: primary and real
Cross References: Functions 1, 2, 7
Typical Course of Events
Actor Actions System Response
1. The Expert starts the program by invoking java SM.Main or from a short-cut. 2. Creates a structured matcher view JFrame with a JTree with one empty simple matcher as it's root node named Untitled.
3. The Expert can
a) Create and attach a new simple matcher to an existing simple matcher.. See section Create a simple matcher.
b) Populate an existing simple matcher by double clicking . See section Populate a simple matcher.		 See the pertinent sections for system response.
4. The Expert saves the structured matcher by selecting the File - Save menu item and filling in the File dialog with the serialized file name. Saves the structured matcher to the disk using object serialization.

Section: Create a simple matcher



Typical Course of Events
Actor Actions System Response
1. The Expert selects an existing simple matcher by clicking on a node. 2. Acknowledges the selection by hightlighting the selected node.
3. Issues command to create a new simple matcher by choosing add from either the Node menu or the context pop up menu (activated by holding down the right mouse button ). 4. Prompts for a name for the new simple matcher by popping up a JOptionPane with a textfield.
5. Enters a new simple matcher name by typing into the textfield and selecting the OK button. 5. Creates a new simple matcher and links it to the selected simple matcher.
6. Updates the visual representation by adding a new node icon to the tree.
Alternative Courses

Section: Populate a simple matcher

Typical Course of Events
Actor Actions System Response
1. The Expert can open up a view of the Simple Matcher which is a JFrame with a JTable, by double clicking on a tree node in the structured matcher view. Then within the simple matcher view frame, the expert can
a) Add a column (question) to the simple matcher. See section Add a question to a simple matcher.
b) Add a row to the simple matcher. See section Add a row to a simple matcher.
c) Edit any cell in the simple matcher. See section Edit a cell in a simple matcher. 		See the pertinent sections for system response.

Section: Add a question to a simple matcher

Typical Course of Events
Actor Actions System Response
1. The Expert issues the command to add a new question to the simple matcher by selecting the Column - Add Question. 2. Prompts the expert to select an existing question (if any) or to create a new one by entering the title, body and type of the question. This is accomplished with a custom dialog which includes a list of all previously defined question.
3. Selects an existing question by clicking on the questions JList or enters the prompted information in Ref JTextfield and Body JTextfield. 4. Saves the new question if one was added by adding it to the Questions Hashtable and links the question to the simple matcher by putting a reference to the question into the column header.
5. Updates the visual representation of the simple matcher. The JTable gets a new column with the name of the question in it's header. The rows of that column shows the Don't Care condition which represents the data in the column Vector.
Alternative Courses

Section: Add a row to a simple matcher

Typical Course of Events
Actor Actions System Response
1. The Expert issues the command to add a new row to the simple matcher by selecting the Row - add row menu item. 2. Inserts a new row into the simple matcher by adding a Don't Caret to the end of each column Vector except the last which a Likelihood.Neutral is inserted.
3. Updates the visual representation of the simple matcher by adding a new row to the JTable with Don't Care in it's cells according to the number and type of existing columns.

Section: Edit a cell in a simple matcher

Typical Course of Events
Actor Actions System Response
1. The Expert selects a cell for editing by double clicking on it. 2. Depending on the type of information that cell contains, present the data editor dialog appropriate to the cell's PluggableDataType.
3. Edits the value(s) in the cell with the DataEditor and indicate done editing by clicking on the OK button. 4. Updates the contents of the Column Vector with the matching condition returned from the DataEditor and the visual representation of the cell with the data's toString() return value.

e-mail:wingkeonxxerasethisxx@ecst.csuchico.edu

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