# tFindRegexlibExpressions

Returns a dataset holding information about all of the regular expressions that match the request sent to the web server.

tFindRegexlibExpressions connects to a web service at *[http://regexlib.com](http://regexlib.com/)* to get a list of regular expressions for all languages, even those that are not supported by Talend .

This component is not shipped with your Talend Studio by default. You need to install it using the Feature Manager. For more information, see [Installing features using the Feature Manager](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/install-features-to-talend-studio).

## tFindRegexlibExpressions Standard properties

These properties are used to configure tFindRegexlibExpressions running in the Standard Job framework.

The Standard tFindRegexlibExpressions component belongs to the Data Quality family.

This component is available in Talend Data Management Platform, Talend Big Data Platform, Talend Real-Time Big Data Platform, Talend Data Services Platform and in Talend Data Fabric.

## Basic settings

| Properties | Description |
| --- | --- |
| Schema and Edit<br>Schema | These fields are read-only. The schema of this component contains<br>the following fields: *Title, Expression, Description,<br>Matches, Non-Matches, Author, Rating*. |
| Regexp Substring | Define a regular expression substring you want to use as a filter<br>on the regular expression list. |
| Key Words | Enter the key word(s) you want to use as a filter on the regular<br>expression list. Key words are separated by commas. |
| Min Rate | Define a regular expression rating you want to use as a filter on<br>the regular expression list. |
| Relative path | Type in the relative path pointing to the pattern folder you need<br>to create under the Patterns &gt;<br>Regex node in the DQ<br>Repository tree view for keeping the retrieved<br>patterns. For example, you need to create a folder called<br>*phone* with a sub-folder<br>*uk* for the phone patterns used in the U.K.,<br>then type in "phone/uk" in this Relative path field.<br><br>In order to create definitely the pattern folder in the DQ<br>Repository, you must import therein the retrieved regular expressions that have<br>been stored in a .csv file. For further information<br>about how to import regular expression from a .csv file,<br>see [Importing regular expressions or SQL patterns from a CSV file](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/importing-regular-expressions-or-sql-patterns-from-csv-file). |

## Advanced settings

| Properties | Description |
| --- | --- |
| tStat<br>Catcher<br>Statistics | Select this check box to collect log data at the component<br>level. |

## Global Variables

| Variables | Description |
| --- | --- |
| Global Variables | ERROR\_MESSAGE: the error message generated by the<br>component when an error occurs. This is an After variable and it returns a string. This<br>variable functions only if the Die on error checkbox is<br>cleared, if the component has this checkbox.<br><br>A Flow variable functions during the execution of a component<br>while an After variable functions after the execution of the component.<br><br>To fill up a field or expression with a variable, press Ctrl+Space to access the variable list and choose the variable to use from<br>it.<br><br>For more information about variables, see [Using contexts and variables](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/contexts-and-variables). |

## Usage

| Usage guidance | Description |
| --- | --- |
| **Usage rule** | This component is a start component. It requires an output flow,<br>usually a csv file. You can later import all collected expressions<br>from a well formatted csv file into *Talend Studio*.<br><br>For more information about importing patterns, see [Importing regular expressions or SQL patterns from a CSV file](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/importing-regular-expressions-or-sql-patterns-from-csv-file). |

**Related concepts**

* [Connecting to a web service and returning a list of regular expressions](https://help.qlik.com/talend/en-US/components/8.0/pattern-validation/tfindregexlibexpressions-tmap-tfileoutputdelimited-tfileoutputdelimited-connecting-to-web-service-and-returning-list-of-regular-expressions-standard-component-enterprise-this)