Mutual Fund Web Application

Requirements Specification

Interface Between JSP and AppComposer Capsules

login.zac

Login is the main entry point servlet for the mutual fund web application. It supports both GET and POST requests.

GET displays the login form defined by login.jsp

POST processes the username and password, creates a UserAccountManager EJB, and stores the EJB in the servlet session under the name fundUserEJB.

Expected Inputs:

No parameters required for GET request.

For POST request, two required parameters:

• username - the username of the current user
• password - the password of the current user

Required external capsule callback methods:

• getErrorString - return a string describing the error or exception that occurred during login. This callback is called by the loginError.jsp page

login.jsp

offers user form for logging in to system

Action is to POST to login servlet/capsule

two text input fields - username and password

loginError.jsp -

page to display when a login error occurs

uses getErrorString callback to get error message from login capsule.

summary.zac

The summary servlet/capsule displays a table showing the fund holdings of the current user. It handles both GET and POST request in the same way.

Expected Inputs:

Summary expects to find a UserAccountManager EJB stored in the servlet session under the name fundUserEJB

Required external capsule callback methods:

• moreRows: are there more rows to display in summary table?
• getName: customer's name
• getFundURL: URL of info page for a given fund
• getFundName: name of fund
• getNumShares: number of shares for a given fund
• getAveragePrice: average purchase price for a given fund
• getCurrentPrice: current trading price for a given fund
• getFundId: fund ID, used for dynamic linking between pages

summary.jsp

page that displays a table listing the current users fund holdings. It calls the external callback methods for the summary capsule to get the data to fill in the table cells.