8.3 Current Watcher Listing
| < Day Day Up > |
| The code for the main user interface page, as shown in Example 8-3, is centered around looping over the results from the static method, AbstractWatcher.getSortedWatches( ). Example 8-3. Main interface JSP<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="com.cascadetg.ch08.AbstractWatcher" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Watches</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <link href="../ch04/www/default.css" rel="stylesheet" type="text/css" /> </head> <body> <table width="100%" border="0" cellpadding="3" cellspacing="3"> <tr> <td colspan="2"><strong>Target</strong></td> <td><strong>Last Update </strong></td> <td> </td> </tr> <tr><td colspan="4"><hr></td></tr> <% AbstractWatcher[] myWatches = AbstractWatcher.getSortedWatches( ); if(myWatches != null) { if(myWatches.length > 0) { for(int i = 0; i < myWatches.length; i ++ ) { %> <tr> <td width="20"> </td> <td> <%= myWatches[i].getHumanType( ) %><br /> <%= myWatches[i].getTarget( ) %></td> <td> <small><%= myWatches[i].getLastUpdate( ).toString( ) %><br><%= myWatches[i].getFrequency( ) %></small></td><td> <a href="delete.jsp?id=<%= myWatches[i].getID( ) %>">Delete</a> </td></tr> <% if(myWatches[i].getAttributes( ).size( ) > 0) { %> <tr><td width="20"> </td> <td colspan="2"><small> <% java.util.Iterator attributeKeys = myWatches[i].getAttributes( ) .keySet( ).iterator( ); while(attributeKeys.hasNext( )) { String name = (String)attributeKeys.next( ); String key = myWatches[i].getFormattedAttribute(name); %> <%= name %> : <%=key %><br> <% } %> </small> </td><td> </td></tr><% } %> <tr><td colspan="6"><hr></td></tr> <% } } } %> </table> <p><a href="add_item.jsp">New Watcher</a> </p> </body> </html>As shown in Figure 8-5, even a few defined watchers can start to overwhelm the default presentation. It's easy to envision adding additional user-interface functionality to deal with the data being mined, such as a Swing client or a more sophisticated DHTML design. Figure 8-5. Several defined watchers |
| < Day Day Up > |
