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.viewer.restfulobjects.viewer.mappers.entity;
  
  import java.util.List;
  import java.util.stream.Stream;
  
  import jakarta.xml.bind.annotation.XmlAccessType;
  import jakarta.xml.bind.annotation.XmlAccessorType;
  import jakarta.xml.bind.annotation.XmlElement;
  import jakarta.xml.bind.annotation.XmlElementWrapper;
  import jakarta.xml.bind.annotation.XmlRootElement;
  import jakarta.xml.bind.annotation.XmlType;
  
  import org.jspecify.annotations.Nullable;
  
  import org.apache.causeway.applib.services.exceprecog.RootCauseFinder;
  import org.apache.causeway.commons.internal.collections._Lists;
  import org.apache.causeway.commons.internal.exceptions._Exceptions;
  
  import lombok.Getter;
  import lombok.NoArgsConstructor;
  
  @XmlRootElement(
          name = "exceptionDetail"
          )
  @XmlType(
          name = "exceptionDetail"
          , propOrder = {
                  "className",
                  "message",
                  "stackTrace",
                  "causedBy"
          }
          )
  @XmlAccessorType(XmlAccessType.FIELD)
  @NoArgsConstructor
  public class ExceptionDetail {
  
      @Getter private String className;
      @Getter private String message;
  
      @XmlElementWrapper()
      @XmlElement(name="element")
      private List<String> stackTrace = _Lists.newArrayList();
  
      @Getter private ExceptionDetail causedBy;
  
      public ExceptionDetail(
              final Throwable ex,
              final @Nullable List<RootCauseFinder> rootCauseFinders) {
          this.className = ex.getClass().getName();
          this.message = ex.getMessage();
  
          Stream.of(ex.getStackTrace())
              .map(ExceptionDetail::format)
              .forEach(stackTrace::add);
  
          this.causedBy = _Exceptions.getRootCause(ex, rootCauseFinders)
              .filter(cause->cause!=ex)
              .map(cause->new ExceptionDetail(cause, rootCauseFinders))
              .orElse(null);
      }
  
      // -- HELPER
  
      private static String format(final StackTraceElement stackTraceElement) {
          return stackTraceElement.toString();
      }
  
  }
  