Splitting a message and renaming the sub-messages according to contained information
This scenario applies only to Talend ESB, Talend Data Services Platform, Talend MDM Platform, Talend Real Time Big Data Platform, and Talend Data Fabric.
For more technologies supported by Talend, see Talend Mediation Components.
In this scenario, a file message containing people information is split into sub-messages. Each sub-messages is renamed according the city name it contains, and then routed to another endpoint.
The following is the example XML file used in this use case:
<people>
<person>
<firstName>Pierre</firstName>
<lastName>Dubois</lastName>
<city>Paris</city>
</person>
<person>
<firstName>Nicolas</firstName>
<lastName>Yang</lastName>
<city>Beijing</city>
</person>
<person>
<firstName>Ellen</firstName>
<lastName>Ripley</lastName>
<city>Washington</city>
</person>
</people>A predefined JavaBean, setFileNames, is called by the cSetHeader component used in this use case to define a file name for each message according to the city name it contains. For more information about creating and using JavaBeans, see Talend Studio User Guide.
package beans;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
public class setFileNames {
public String getCityName(Document document) {
NodeList cities = document.getDocumentElement().getElementsByTagName(
"city");
Element city = (Element) cities.item(0);
String textContent = city.getTextContent();
return textContent+".xml";
}
}