ReturnRegexHandler

Description

This handler returns the results of a regular expression as a string.

Class

com.dooris.bpm.actionhandler.ReturnRegexHandler

Parameter

Parameter name	Default value	Description	Valid examples

Parameter name	Default value	Description	Valid examples
`regex`		This parameter is used to set the regular expressions. The following Regex example can be used to extract a valid e-mail from an arbitrary text. `([a-zA-Z0-9.]+@([a-zA-Z0-9-]+\.)+[a-zA-Z0-9_-]+)`	`([a-zA-Z0-9.]+@([a-zA-Z0-9-]+\.)+[a-zA-Z0-9_-]+)`
`content`		The tested string, present as either a variable `${Prozessvariable}` or a string directly.	`${emailListe}`
`writeNameInVariable`		The process variable into which the results are written.	`ersteEmail`
`matchAll`	`true`	Boolean(`true`/`false`). If it is set to `true`, all results are written to the process variable. If it is set to `false`, only the first result will be stored.	`false`

Example:

In this example a process model with only one task is needed. At process instance start a text which contains email adresses will be inserted into a textfield the Form. After instance start, only the email addresses from the text should be displayed in a second input field.

Process model:

The ReturnRegexHandler is implemented on the task ‘Return Regex’ with the following parameters and values:

Parameter	Wert

Parameter	Wert
`regex`	`([a-zA-Z0-9.]+@([a-zA-Z0-9-]+\.)+[a-zA-Z0-9_-]+)`
`content`	`${sampletext}`
`writeNameInVariable`	`emailaddresses`

Furthermore, a form is needed with an input field for the text and an output field for the result from the ReturnRegexHandler.

After publishing the process, it can be started after entering a text containing email addresses into the first input field.

After process start, the Form can be viewed in "Started process instances" and the e-mail addresses from the text above are displayed in the 2nd input field.