How to throw exception

[AbdulHammed]

Hi Experts,

My Scenario is File(Tab delimiter) to proxy and the requirement is when ever i get an invalid char any where in file have to throw an exception.

Can you please suggest me guys.

Regards

Abdul.

[former_member182412]

Hi Abdul,

Use below java mapping before message mapping to throw an exception if there are any special characters.

import java.io.InputStream;
import java.io.OutputStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


import com.sap.aii.mapping.api.AbstractTransformation;
import com.sap.aii.mapping.api.StreamTransformationException;
import com.sap.aii.mapping.api.TransformationInput;
import com.sap.aii.mapping.api.TransformationOutput;


public class CheckSpecialCharacters extends AbstractTransformation {
  @Override
  public void transform(TransformationInput transformationInput, TransformationOutput transformationOutput)
  throws StreamTransformationException {
  try {
  InputStream inputStream = transformationInput.getInputPayload().getInputStream();
  OutputStream outputStream = transformationOutput.getOutputPayload().getOutputStream();
  byte[] buf = new byte[inputStream.available()];
  inputStream.read(buf);
  String inputPayload = new String(buf);
  Pattern pattern = Pattern.compile("[^\\p{ASCII}]");
  Matcher matcher = pattern.matcher(inputPayload);
  if (matcher.find())
  throw new StreamTransformationException("File got invalid characters");
  outputStream.write(inputPayload.getBytes());
  } catch (Exception ex) {
  getTrace().addDebugMessage(ex.getMessage());
  throw new StreamTransformationException(ex.toString());
  }
  }
}

Test mapping:

Regards,

Praveen.

[former_member186851]

Hello Abdul,

If the Invalid characters are causing the mapping failure you can trigger an alert and mail will be sent to configured users.

Refer the below links

[AbdulHammed]

Thanks Raghu,

But mapping is not failing when i tried to test with invalid char file.

can u please suggest me an UDF to throw an exception at mapping level.

[iaki_vila]

Hi Abdul,

Check this blog Throwing Smart Exceptions in XI Graphical Mapping | SCN or Debashish answer UDF to raise exception | SCN

Regards.

[former_member186851]

Abdul,

Links shared by Inaki should help you.

Once more link for your reference

SAPTechnical.COM - Handling and Tracing Runtime Exceptions in Java Mapping (SAP PI/XI)