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.facets.object.objectvalidprops;
  
  import org.apache.causeway.core.metamodel.facetapi.Facet;
  import org.apache.causeway.core.metamodel.facets.objectvalue.mandatory.MandatoryFacet;
  import org.apache.causeway.core.metamodel.interactions.ValidatingInteractionAdvisor;
  import org.apache.causeway.core.metamodel.interactions.val.ObjectValidityContext;
  
  /**
   * Object-level {@link ValidatingInteractionAdvisor validator} that ensures that
   * all {@link MandatoryFacet mandatory} properties are entered prior to
   * persisting the object.
   */
  public interface ObjectValidPropertiesFacet extends Facet, ValidatingInteractionAdvisor {
  
      /**
       * The reason the object is invalid.
       *
       * <p>
       * . If the object is actually valid, should return <tt>null</tt>.
       */
      public String invalidReason(ObjectValidityContext context);
  
  }
  