Oracle Application Express API Reference describes the Application Programming Interfaces, referred to as APIs, available when programming in the Oracle Application Express environment.


Topic Overview

Topics in this help set include:

Title Description
Use the APEX_APPLICATION package to take advantage of a number of global variables.
The APEX_APPLICATION_INSTALL package provides a number of methods to modify application attributes during the Application Express application installation process.
Use APEX_COLLECTION to temporarily capture one or more nonscalar values. You can use collections to store rows and columns currently in session state so they can be accessed, manipulated, or processed during a user's specific session.
The APEX_CSS package provides utility functions for adding CSS styles to HTTP output. This package is usually used for plug-in development.
Use the APEX_CUSTOM_AUTH package to perform various operations related to authentication and session management.
The APEX_DEBUG_MESSAGE package provides utility functions for managing the debug message log.
The APEX_INSTANCE_ADMIN package provides utilities for managing an Oracle Application Express runtime environment. Use the APEX_INSTANCE_ADMIN package to get and set email settings, wallet settings, report printing settings and to manage scheme to workspace mappings.
Use the APEX_ITEM package to create form elements dynamically based on a SQL query instead of creating individual items page by page.
The APEX_JAVASCRIPT package provides utility functions for adding dynamic JavaScript code to HTTP output. This package is usually used for plug-in development.
Use APEX_LANG API to translate messages.
Use APEX_LDAP to perform various operations related to Lightweight Directory Access Protocol (LDAP) authentication.
Use the APEX_MAIL package to send an email from an Oracle Application Express application.
Use APEX_PLSQL_JOB package to run PL/SQL code in the background of your application. This is an effective approach for managing long running operations that do not need to complete for a user to continue working with your application.
The APEX_PLUGIN package provides the interface declarations and some utility functions to work with plug-ins.
The APEX_PLUGIN_UTIL package provides utility functions that solve common problems when writing a plug-in.
You can use the APEX_UI_DEFAULT_UPDATE package to set the user interface defaults associated with a table within a schema. The package must be called from within the schema that owns the table you are updating.
Use the APEX_UTIL package to get and set session state, get files, check authorizations for users, reset different states for users, and also to get and set preferences for users.
The APEX_WEB_SERVICE API allows you to integrate other systems with Application Express by allowing you to interact with Web services anywhere you can utilize PL/SQL in your application. The API contains procedures and functions to call both SOAP and RESTful style Web services.
JavaScript APIs
Use these JavaScript functions and objects to provide client-side functionality, such as showing and hiding page elements, or making XML HTTP Asynchronous JavaScript and XML (AJAX) requests.


In release 2.2, Oracle Application Express APIs were renamed using the prefix APEX_. Note that API's using the previous prefix HTMLDB_ are still supported to provide backward compatibility. As a best practice, however, use the new API names for new applications unless you plan to run them in an earlier version of Oracle Application Express.


Oracle Application Express API Reference is intended for application developers who are building database-centric Web applications using Oracle Application Express. The guide describes the APIs available when programming in the Oracle Application Express environment.

To use this guide, you need to have a general understanding of relational database concepts as well as an understanding of the operating system environment under which you are running Oracle Application Express.

See Also:

Oracle 2 Day + Application Express Developer's Guide

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