content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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 org.apache.causeway.testdomain.persistence.jpa;
  
  import java.util.NoSuchElementException;
  
  import org.springframework.dao.DataAccessException;
  import org.springframework.dao.support.DataAccessUtils;
  import org.springframework.orm.jpa.JpaTransactionManager;
  
  import org.apache.causeway.commons.functional.Try;
  import org.apache.causeway.commons.internal.exceptions._Exceptions;
  
  final class _JpaExceptionTranslator {
  
      // not used, but maybe keep for debugging purposes
      static DataAccessException translate(final Throwable failure, final JpaTransactionManager txManager) {
  
          return (DataAccessException) Try.failure(failure)
  
          .mapFailure(ex-> _Exceptions.streamCausalChain(ex)
                  .filter(e->e instanceof RuntimeException)
                  .map(RuntimeException.class::cast)
                  // call Spring's exception translation mechanism
                  .map(nextEx->DataAccessUtils.translateIfNecessary(nextEx, txManager.getJpaDialect()))
                  .filter(nextEx -> nextEx instanceof DataAccessException)
                  .findFirst()
                  .orElseGet(()->new RuntimeException(ex)))
  
          .getFailure()
          .orElse(new NoSuchElementException("No value present"));
  
      }
  
  }
  