com.browserup.bup.rest.validation.mapper.ConstraintViolationExceptionMapper Maven / Gradle / Ivy
package com.browserup.bup.rest.validation.mapper;
import com.browserup.bup.rest.validation.mapper.model.ConstraintsErrors;
import org.apache.commons.lang3.StringUtils;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;
public class ConstraintViolationExceptionMapper implements ExceptionMapper {
private static final String PARAMETER_NAME_ATTRIBUTE = "paramName";
@Override
public Response toResponse(ConstraintViolationException exception) {
return Response.status(Response.Status.BAD_REQUEST)
.entity(createConstraintErrors(exception))
.type(MediaType.APPLICATION_JSON_TYPE)
.build();
}
private ConstraintsErrors createConstraintErrors(ConstraintViolationException exception) {
ConstraintsErrors errors = new ConstraintsErrors();
exception.getConstraintViolations().stream()
.filter(v -> StringUtils.isNotEmpty(v.getMessage()))
.forEach(violation -> errors.addError(getArgumentName(violation), violation.getMessage()));
return errors;
}
private String getArgumentName(ConstraintViolation violation) {
String argumentIdentifier;
Object paramName = violation.getConstraintDescriptor().getAttributes().get(PARAMETER_NAME_ATTRIBUTE);
if (paramName instanceof String && paramName.toString().length() > 0) {
argumentIdentifier = (String) paramName;
} else {
argumentIdentifier = StringUtils.substringAfterLast(violation.getPropertyPath().toString(), ".");
}
return argumentIdentifier;
}
}