Lock

Ensures the integrity of shared data.

Component Signature

<bx:Lock name=[string]
scope=[string]
type=[string]
timeout=[Integer]
throwOnTimeout=[boolean] />

Attributes

Atrribute	Type	Required	Description	Default
name	string	false	Lock name. Mutually exclusive with the scope attribute. Only one request can execute the code within a lock component with a given name at a time. Cannot be an empty string.
scope	string	false	Lock scope. Mutually exclusive with the name attribut Lock name. Only one request in the specified scope can execute the code within this component (or within any other lock component with the same lock scope scope) at a time.
type	string	false	readOnly: lets more than one request read shared data. exclusive: lets one request read or write shared data.	exclusive
timeout	Integer	true	Maximum length of time, in seconds, to wait to obtain a lock. If lock is obtained, tag execution continues. Otherwise, behavior depends on throwOnTimeout attribute value. A value of 0 will wait forever.
throwOnTimeout	boolean	false	True: if lock is not obtained within the timeout period, a runtime exception is thrown. False: if lock is not obtained, the body of the component is skipped and execution continues without running the statements in the component.	true

Examples

Script Syntax

bx:lock timeout="60" scope="session" type="exclusive" {
	session.MYVAR = "Hello";
}

Tag Syntax

<bx:lock timeout="60" scope="session" type="exclusive"> 
 <bx:set session.MYVAR = "Hello" > 
 </bx:lock>