Scenario: Extracting only the data that corresponds to a defined pattern from a delimited file - 6.1

Talend Components Reference Guide

EnrichVersion
6.1
EnrichProdName
Talend Big Data
Talend Big Data Platform
Talend Data Fabric
Talend Data Integration
Talend Data Management Platform
Talend Data Services Platform
Talend ESB
Talend MDM Platform
Talend Open Studio for Big Data
Talend Open Studio for Data Integration
Talend Open Studio for Data Quality
Talend Open Studio for ESB
Talend Open Studio for MDM
Talend Real-Time Big Data Platform
task
Data Governance
Data Quality and Preparation
Design and Development
EnrichPlatform
Talend Studio

This scenario describes a four-component Job where the tExtractPattern component is used to extract only customers' email addresses (that match the Email address pattern) from a delimited file that holds different customer data. Then it writes the extracted data into another delimited file. A tFilterColumns component is used to adapt the output schema.

Setting up the Job

  1. Drop the following components from the Palette to the design workspace: tFileInputDelimited, tPatternExtract, tFilterColumns, and tFileOutputDelimited.

  2. Connect the tFileInputDelimited component to the tPatternExtract component using a Row > Main connection.

  3. Connect the tPatternExtract component to the tFilterColumns component using the Row > Matching Data connection.

  4. Connect the tFilterColumns component to the tFileOutputDelimited component using a Row > Main connection.

Configuring the components

  1. Double-click tFileInputDelimited to display its Basic settings view and define the component properties, including the input file name, the number of header rows to skip, and the schema.

    In this scenario, the delimited file holds names, email addresses and telephone numbers, all in a single column: Name_Telephone_Address. The following shows an extract of the input file.

    Therefore, define the input schema as follows:

  2. Double-click tPatternExtract to display its Basic settings view and define the component properties.

  3. From the Column to check list, select the column you want to check its data against the defined pattern, Name_Telephone_Address in this example.

  4. In the Pattern type list, select the pattern you want to extract data according to, /Regex/internet/Email Address in this example.

  5. In the Basic settings view of the tFilterColumns component, click the [...] button next to Edit schema to open the [Schema] dialog box.

  6. Select the column of interest from the Input schema, and click the right arrow button to copy the column to the output schema. Then, click OK to close the dialog box.

  7. Double-click tFileOutputDelimited to display its Basic settings view and define the component properties.

  8. In the File Name field, specify the path to the file you want to write the output data to.

  9. Define the row and field separators in the corresponding fields, if any. In this example, we want to separate customers' email addresses by semicolons.

Executing the Job

  • Save your Job and press F6 to execute it.

    Customers' email addresses are extracted from the selected column according to the defined Email pattern and written in the output file using semicolons as row separators. You can then, for example, send an email to all your customers in one go.