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.tabular.internal;
  
  import java.util.Optional;
  
  import org.apache.causeway.commons.internal.binding._Observables;
  import org.apache.causeway.commons.internal.binding._Observables.LazyObservable;
  import org.apache.causeway.core.metamodel.spec.feature.ObjectAssociation;
  import org.apache.causeway.core.metamodel.tabular.DataColumn;
  
  import org.jspecify.annotations.NonNull;
  
  record DataColumnInternal(
      @NonNull String columnId,
      @NonNull ObjectAssociation associationMetaModel,
      @NonNull LazyObservable<String> columnFriendlyNameObservable,
      @NonNull LazyObservable<Optional<String>> columnDescriptionObservable)
  implements DataColumn {
  
      DataColumnInternal(final DataTableInternal parentTable, final ObjectAssociation associationMetaModel) {
          this(associationMetaModel.getId(),
              associationMetaModel,
              _Observables.lazy(associationMetaModel::getCanonicalFriendlyName),
              _Observables.lazy(associationMetaModel::getCanonicalDescription));
      }
  
  }
  