/*
 * Copyright 2015-2016 michael-simons.eu.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package eu.euregjug.site.support;

import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

/**
 * This class is an advice that takes care of mapping Exceptions to "sane" HTTP
 * status codes.
 *
 * @author Michael J. Simons, 2015-11-16
 */
@ControllerAdvice
public class ExceptionHandlerAdvice {

    @ExceptionHandler(IllegalArgumentException.class)
    public ResponseEntity<String> handleIllegalArgumentException(IllegalArgumentException e) {
	return new ResponseEntity<>(e.getMessage(), HttpStatus.BAD_REQUEST);
    }

    @ExceptionHandler(DataIntegrityViolationException.class)
    public ResponseEntity<String> handleDataIntegrityViolationException(DataIntegrityViolationException e) {
	return new ResponseEntity<>(HttpStatus.CONFLICT);
    }
}

/*
 * Copyright 2015-2016 michael-simons.eu.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package eu.euregjug.site.support;

import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

/**
 * This class is an advice that takes care of mapping Exceptions to "sane" HTTP
 * status codes.
 *
 * @author Michael J. Simons, 2015-11-16
 */
@ControllerAdvice
public final class ExceptionHandlerAdvice {

    @ExceptionHandler(IllegalArgumentException.class)
    public ResponseEntity<String> handleIllegalArgumentException(IllegalArgumentException e) {
	return new ResponseEntity<>(e.getMessage(), HttpStatus.BAD_REQUEST);
    }

    @ExceptionHandler(DataIntegrityViolationException.class)
    public ResponseEntity<String> handleDataIntegrityViolationException(DataIntegrityViolationException e) {
	return new ResponseEntity<>(HttpStatus.CONFLICT);
    }
}

Make advice final