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.core.metamodel.tree;
  
  import java.io.InvalidObjectException;
  import java.io.ObjectInputStream;
  import java.io.Serializable;
  
  import org.apache.causeway.applib.annotation.Programmatic;
  import org.apache.causeway.applib.graph.tree.TreeAdapter;
  import org.apache.causeway.commons.internal.base._Casts;
  import org.apache.causeway.commons.internal.exceptions._Exceptions;
  import org.apache.causeway.core.metamodel.context.MetaModelContext;
  
  import org.jspecify.annotations.NonNull;
  
  /**
   * Wraps a non-serializable {@link TreeAdapter} using a serializable record.
   */
  @Programmatic
  public record TreeAdapterRecord<T>(
      TreeAdapter<T> treeAdapter) implements Serializable {
  
      // -- SERIALIZATION PROXY
  
      private Object writeReplace() {
          return new SerializationProxy(this);
      }
  
      private void readObject(final ObjectInputStream stream) throws InvalidObjectException {
          throw new InvalidObjectException("Proxy required");
      }
  
      private static class SerializationProxy implements Serializable {
          private static final long serialVersionUID = 1L;
  
          private final @NonNull Class<? extends TreeAdapter<?>> treeAdapterClass;
  
          private SerializationProxy(final TreeAdapterRecord<?> treeAdapterRecord) {
              this.treeAdapterClass = _Casts.uncheckedCast(treeAdapterRecord.treeAdapter().getClass());
          }
  
          @SuppressWarnings({ "rawtypes", "unchecked" })
          private Object readResolve() {
              var mmc = MetaModelContext.instanceElseFail();
              try {
                  return new TreeAdapterRecord(mmc.getFactoryService().getOrCreate(treeAdapterClass));
              } catch (Exception e) {
                  throw _Exceptions.unrecoverable(e, "failed to instantiate tree adapter of type %s via FactoryService",
                      treeAdapterClass.getName());
              }
          }
      }
  
  }
  