ex6_72.txt

来自「j2ee core design patterns」· 文本 代码 · 共 34 行

Example 6.72 ViewAccountDetailsCommand
public class AccountCommand implements Command {
	public AccountCommand() { }

	// view account details operation
	public ResponseContext execute(RequestContext requestContext) {

		String accountId = 
			requestContext.getStringParameter("AccountId");

		/** Use an business delegate to retrieve data 
		 * from application service, and store result 
		 * in a response object.
		 * Note: Object creation could be avoided via 
		 * factory, but for example purposes object 
		 * instantiation is shown **/ 

		AccountDelegate delegate = new AccountDelegate();
		AccountTO accountTO;
		accountTO= delegate.getAccountProfile(accountId);

		// This info could come from biz-tier components
		String logicalViewName = "AccountProfile"; 

		ResponseContextFactory factory =
			ResponseContextFactory.getInstance();

		ResponseContext responseContext = 
			factory.createResponseContext(accountTO, logicalViewName);

		return responseContext;

	}
}