Processing Schema Validation error in BPM?

Question

Hi all,
We have a file to IDOC scenario where if the schema validation fails on the file adapter sender agreement, we want to pull the filename and send it in an error email. So, we are talking about the adapter specific message attribute "Filename".
unfortunately, this does not seem to be available as a container element for alert catagories in ALRTCATDEF. So, we are starting to look into using BPM to send a email via the email adapter. However, since the validation happens prior to BPM being called I am at a bit of a loss. Any ideas on how to get the email with the filename out to the suport group would be appreciated.
Thanks,
Chris

Answer 1

package com.validate;
import com.sap.aii.mapping.api.*;
import com.sap.aii.mappingtool.tf7.rt.Container;
import java.io.*;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.*;
public class ValidateXML extends AbstractTransformation {
    public void transform(TransformationInput transformationInput, TransformationOutput transformationOutput) throws StreamTransformationException {
        OutputStream outputstream = null;
        try {
            InputStream inputstream = transformationInput.getInputPayload().getInputStream();
            outputstream = transformationOutput.getOutputPayload().getOutputStream();
            byte[] b = new byte[inputstream.available()];
            inputstream.read(b);
            String XMLinputFileContent = new String(b);
            // define the type of schema - we use W3C:
            String schemaLang = "http://www.w3.org/2001/XMLSchema";
            // get validation driver:
            SchemaFactory factory = SchemaFactory.newInstance(schemaLang);
            //Place XSD file in PI server same as http://help.sap.com/saphelp_nwpi711/helpdata/en/44/0bf1b3ec732d2fe10000000a11466f/frameset.htm
            //OR I think you can place any where on server.
            File XSDfile = new File("C:/xi/runtime_server/validation/schema/SchemaFile.xsd");
            // create schema by reading it from an XSD file:
            Schema schema = factory.newSchema(new StreamSource(XSDfile));
            Validator validator = schema.newValidator();
            // at last perform validation:
            validator.validate(new StreamSource(XMLinputFileContent));
            //If XML it not valid, exception will be thrown, if it is valid sent this PassOutputXML to output
            String PassOutputXML = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><ns:MT_OutputXML xmlns:ns=\"http://sap.com/xi\"> <Name>FileName.txt</Name><Validation>Pass</Validation> </ns:MT_OutputXML>";
            outputstream.write(PassOutputXML.getBytes());
        } catch (Exception exception) {
            //Get File name using http://help.sap.com/saphelp_nwpi711/helpdata/en/43/03612cdecc6e76e10000000a422035/frameset.htm
            Container container = null;
            DynamicConfiguration conf = (DynamicConfiguration) container.getTransformationParameters().get(StreamTransformationConstants.DYNAMIC_CONFIGURATION);
            DynamicConfigurationKey key = DynamicConfigurationKey.create("http://sap.com/xi/XI/System/File", "FileName");
            String inputFileName = conf.get(key);
            String FailOutputXML = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><ns:MT_OutputXML xmlns:ns=\"http://sap.com/xi\"> <Name>" + inputFileName + "</Name><Validation>Fail</Validation> </ns:MT_OutputXML>";
            try {
                outputstream.write(FailOutputXML.getBytes());
            } catch (IOException ex) {
                exception.printStackTrace();
                ex.printStackTrace();