Scenario: Deleting master data from an MDM Hub - 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 six-component Job that deletes the specified data record from the MDM Hub. It also makes use of the tMDMCommit and tMDMRollback components so that changes to the database are only made on successful completion of the Job.

Dropping and linking the components

  1. Drop tMDMConnection, tMDMCommit, tMDMClose, tMDMInput, tMDMDelete, and tMDMRollback from the Talend MDM family from the Palette onto the design workspace.

  2. Connect tMDMInput to tMDMDelete using a Row > Main link.

  3. Connect tMDMConnection to tMDMInput using a Trigger > OnSubjobOk link.

  4. Connect tMDMDelete to tMDMCommit, tMDMCommit to tMDMClose and tMDMRollback to tMDMClose using Trigger > OnComponentOk links.

  5. Connect tMDMDelete to tMDMRollback using a Trigger > OnComponentError link.

Configuring the MDM server connection

In this scenario, a tMDMConnection component is used to open an MDM server connection for convenient reuse in the subsequent subjob that performs the data record deletion task.

  1. Double-click tMDMConnection to display its Basic settings view and define the component properties.

  2. In the URL field, enter the MDM server URL, between quotation marks: for example, "http://localhost:8180/talendmdm/services/soap".

  3. In the Username and Password fields, enter your user name and password to connect to the MDM server.

  4. Double-click tMDMCommit to display its Basic settings view and define the component properties.

    This component commits the changes made to the database on successful completion of the proceeding subjob.

  5. From the Component List list, select the component for the server connection you want to close if you have configured more than one MDM server connection. In this use case, there is only one MDM server connection open, so simply use the default setting.

  6. Deselect the Close Connection check box if it is selected. In this example, the tMDMClose component closes the connection to the MDM Server.

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

    This component rolls back any changes and returns the database to its previous state if the proceeding subjob fails.

  8. From the Component List list, select the component for the server connection you want to close if you have configured more than one MDM server connection. In this use case, there is only one MDM server connection open, so simply use the default setting.

  9. Deslect the Close Connection check box if it is selected. In this example, the tMDMClose component closes the connection to the MDM Server.

  10. Double-click tMDMClose to display its Basic settings view and define the component properties.

    Note

    The tMDMClose component is used to close the connection after the successful execution of the Job. You can also close the connection by selecting the Close Connection check box in the tMDMCommit and tMDMRollback components, but for the purposes of this scenario the tMDMClose component is used instead.

  11. From the Component List list, select the component for the server connection you want to close if you have configured more than one MDM server connection. In this use case, there is only one MDM server connection open, so simply use the default setting.

Configuring data retrieval

  1. Double-click tMDMInput to display its Basic settings view and define the component properties.

  2. From the Property Type list, select Built-in to complete the fields manually.

    If you have stored the MDM connection information in the repository metadata, select Repository from the list and the fields will be completed automatically.

  3. From the Schema list, select Built-in and click [...] next to Edit schema to open a dialog box.

    Here you can define the structure of the master data you want to read in the MDM hub.

  4. The master data is collected in a three-column schema of the type String: Id, Name and Price. Click OK to close the dialog box and proceed to the next step.

  5. Select the Use an existing connection check box, and from the Component List list that appears, select the component you have configured to open your MDM server connection.

    In this scenario, only one MDM server connection exists, so simply use the default selection.

  6. In the Entity field, enter the name of the business entity that holds the data record(s) you want to read, between quotation marks. Here, we want to access the Product entity.

  7. In the Data Container field, enter the name of the data container that holds the master data you want to read, between quotation marks. In this example, we use the Product container.

    Note

    The Use multiple conditions check box is selected by default.

  8. In the Operations table, define the conditions to filter the master data you want to delete as follows:

    • Click the plus button to add a new line.

    • In the Xpath column, enter the Xpath and the tag of the XML node on which you want to apply the filter, between quotation marks. In this example, we work with the Product entity, so enter "Product/Name".

    • In the Function column, select the function you want to use. In this scenario, we use the Contains function.

    • In the Value column, enter the value of your filter. Here, we want to filter the master data where the Name contains mug.

  9. In the Component view, click Advanced settings to set the advanced parameters.

  10. In the Loop XPath query field, enter the structure and the name of the XML node on which the loop is to be carried out, between quotation marks.

  11. In the Mapping table and in the XPath query column, enter the name of the XML tag in which you want to collect the master data, next to the corresponding output column name, between quotation marks.

Configuring data record deletion

  1. In the design workspace, double-click the tMDMDelete component to display the Basic settings view and set the component properties.

  2. From the Schema list, select Built-in and click the three-dot button next to the Edit Schema field to describe the structure of the master data in the MDM hub.

  3. Click the plus button to the right to add one column of the type String. In this example, name this column outputXML. Click OK to close the dialog box and proceed to the next step.

  4. Select the Use an existing connection check box, and from the Component List list that appears, select the component you have configured to open your MDM server connection.

    In this scenario, only one MDM server connection exists, so simply use the default selection.

  5. In the Entity field, enter the name of the business entity that holds the master data you want to delete, the Product entity in this example.

  6. In the Data Container, enter the name of the data container that holds the data to be deleted, Product in this example.

  7. In the Keys table, click the plus button to add a new line. In the Keys column, select the column that holds the key of the Product entity. Here, the key of the Product entity is set on the Id field.

    Note

    If the entity has multiple keys, add as many line as required for the keys and select them in sequential order.

  8. If needed, select the Fire Delete event check box, so that the delete event will be generated and written into UpdateReport.

  9. Select the Logical delete check box if you do not want to delete the master data permanently. This will send the deleted data to the Recycle bin. Once in the Recycle bin, the master data can be restored or permanently deleted. If you leave this check box clear, the master data will be permanently deleted.

Saving and executing the Job

  1. Press Ctrl+S to save your Job to ensure that all the parameters you have configured take effect.

  2. Press F6 to execute your Job.

The master data with the Name containing "mug" have been deleted and sent to MDM Recycle bin.