Chapter 8 using web sessions through rest

Chapter viii. adopt REST Use Web conversation （Sessions）

Enable REST Service to use Web conversation . This chapter describes why and how to do this .

Introduce

REST One of our goals is statelessness ; in other words , From a REST Call to the next , No knowledge is stored on the server . Span REST Call hold Web Conversation destroys the stateless paradigm , But you may want to keep Web There are two reasons for conversation ：

• Minimize connection time —— If each REST Call to create a new Web conversation , It needs to establish a new session on the server . By reservation Web conversation ,REST Call can connect faster .
• Span REST Call retain data — In some cases , May need to cross REST Call to reserve data to effectively meet business needs .

Enable REST Service to use Web conversation

To enable multiple REST The call uses a single Web conversation , Please add UseSession Parameter set to 1. for example ：

Parameter UseSession As Integer = 1;

Then recompile this class

If UseSession by 1, IRIS Across multiple REST Service call keeps one Web conversation . If the parameter is 0（ The default value is ）, IRIS For each REST The service invocation uses a new Web conversation .

Be careful ： When recompiling the specification class ,UseSession Parameters are copied to the scheduling class , This will lead to actual changes in behavior .