The Forms Listener servlet manages the creation of a Forms Runtime process for each client and manages the network communications between the client and its associated Forms Runtime process.
#Java web form builder code#
The Forms Runtime process, in the right side of the image, executes the code contained in a particular Forms application. In the center of the image, the HTTP Listener acts as the network endpoint for the client, keeping the other server computers and ports from being exposed at the firewall. In this image, the client is to the left. Oracle Forms Services uses the Forms Listener servlet to start, stop, and communicate with the Forms Runtime process.
The introduction.html#GUID-C5778A9D-F5B7-4A8F-A1E2-19206B6F7D5F_I1012487 shows how the client sends HTTP requests and receives HTTP responses from Forms Services. The Forms Listener servlet is a broker between the Java client and the Forms Runtime process.įorms Listener servlet takes connection requests from Java client processes and initiates a Forms Runtime process on their behalf.
#Java web form builder software#
The database tier, in the lower portion of the image, is the database server, where database server software is stored. The Forms Runtime process, also resides on the middle tier. The Forms Listener servlet resides on the middle tier. The middle tier, in the center of the image, is the application server, where application logic and server software are stored. The Forms Standalone Launcher (FSAL) and a Java Runtime Environment or Java Development Kit (JDK). The client tier, at the top of the image, may contain one of the following two configurations:Ī Web browser, where the application is displayed or from where it is launched and the Java Plug-In (JPI/JRE). The three tiers of the architecture are as follows: Some minor changes in application code may be required when moving to a three-tier architecture. Developers can also take current applications that were previously deployed in client/server and move them to a three-tier architecture. Developers build Forms applications with Forms Developer and deploy them with Forms Services. The Forms Services architecture is made up of three-tiers. Oracle Forms Services is a middle-tier application framework for deploying complex, transactional Forms applications to a network such as an intranet or the Internet.
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