Text Delimited, Regular Expression, JPath, and XPath extractors can have dynamic properties containing not only constant values but also variables. A dynamic property value consists of a combination of constant strings and variables.

The following property can be dynamic:

  • text before and text after, in the text delimited extractors
  • the regular expression in the regular expression extractors
  • JPath query in the Json Jpath Query extractor
  • XPath query in the XML Xpath Query extractor


To insert a variable in a dynamic property, use the variable notation described here. The following variable types are supported:

  • Extractors
  • Datasets
  • Data Generators
  • Functions
  • Scriptable variables

Create dynamic extractor

To create a dynamic extractor, the first step is to set the Is the extractor dynamic? property to Yes.

Then, when setting the extractor definition, you may use variables.

Verifying

Starting from v5.6, dynamic extractors can be verified in the create extractor dialog. If another extractor is used in the dynamic extractor's definition, the other extractor's recorded value will be used when verifying the dynamic extractor.

Example:

Imagine the following response:

<input .... name="John" id="11111" />

<input .... name="Laura" id="22222" />

<input .... name="Anita" id="33333" />

You need to extract the id of Laura (22222) because that was the value picked from the dataset. Create the following extractor

Text before: name="{{Contact.FName$Dataset}}" id="

Text after: "

If the value from the dataset on the next iteration would be John, then this extractor would return 11111.



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