By Deepak Vohra
- decreased reaction time and diminished server load, because the entire web content isn't reposted.
- diminished bandwidth of net purposes as merely information is transferred and the HTML structure is utilized within the browser.
- Separation of information, layout and elegance.
The booklet covers internet seek and RSS Feed with Ajax in addition to shape validation with Ajax frameworks for Java, JSP, JSF, and Hypertext Preprocessor. It discusses utilizing Ajax in Oracle JDeveloper and is IDE dependent. JDeveloper has the subsequent benefits over Eclipse IDE.
- It additionally offers a Hypertext Preprocessor extension.
- JDeveloper has a integrated help for JSF and for JDBC.
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Additional info for Ajax in Oracle JDeveloper
Specify the SID as ORCL. Click on Test Connection. If a JDBC connection gets established a “Success” message gets displayed. Click on OK as shown in Fig. 11. 2 Setting the Environment 27 Fig. 11 Configuring a Connection A node for the connection gets added to IDE Connections node in Databases window as shown in Fig. 12. The Catalog table may be modified if required using the SQL Worksheet. 28 2 Developing an Ajax Web Application Fig. 12 New Database Connection Connection AjaxConnection in Databases window is available as datasource with JNDI name jdbc/AjaxConnectionDS.
2 Setting the Environment 23 Click on Next in Create HTTP Servlet Wizard. In Servlet Information window, specify a Servlet name, FormValidationServlet, and click on Next as shown in Fig. 6. Fig. 6 Specifying Servlet Class In the Mapping Information window specify a servlet mapping URL, /validateForm for example, and click on Next as shown in Fig. 7. 24 2 Developing an Ajax Web Application Fig. 7 Specifying Servlet Mapping URL In Servlet Parameters window, specify any servlet parameters if required (none by default) and click on Finish.
Specifies if the XMLHttpRequest be sent asynchronously. Default is true. If HTTP request method is ‘post’, specifies the request’s body. Specifies an array of HTTP headers to be sent with the request. Specifies the functions that are invoked at various stages of the request. Recieves an argument representing the XMLHttpRequest and an argument representing the response header. 1 (continued) Property onSuccess, onFailure, onException Description Specifies the function to be invoked when AJAX request completes successfully, or fails, or generates an exception.