001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one
003     *  or more contributor license agreements.  See the NOTICE file
004     *  distributed with this work for additional information
005     *  regarding copyright ownership.  The ASF licenses this file
006     *  to you under the Apache License, Version 2.0 (the
007     *  "License"); you may not use this file except in compliance
008     *  with the License.  You may obtain a copy of the License at
009     *
010     *        http://www.apache.org/licenses/LICENSE-2.0
011     *
012     *  Unless required by applicable law or agreed to in writing,
013     *  software distributed under the License is distributed on an
014     *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     *  KIND, either express or implied.  See the License for the
016     *  specific language governing permissions and limitations
017     *  under the License.
018     */
019    
020    package org.apache.isis.core.progmodel.facets.object.validprops;
021    
022    import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
023    import org.apache.isis.core.metamodel.facetapi.FacetHolder;
024    import org.apache.isis.core.metamodel.interactions.ObjectValidityContext;
025    import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
026    import org.apache.isis.core.metamodel.spec.feature.ObjectAssociationFilters;
027    import org.apache.isis.core.metamodel.spec.feature.OneToOneAssociation;
028    
029    public class ObjectValidPropertiesFacetImpl extends ObjectValidPropertiesFacetAbstract {
030    
031        public ObjectValidPropertiesFacetImpl(final FacetHolder holder) {
032            super(holder);
033        }
034    
035        @Override
036        public String invalidReason(final ObjectValidityContext context) {
037            final StringBuilder buf = new StringBuilder();
038            final ObjectAdapter adapter = context.getTarget();
039            for (final ObjectAssociation property : adapter.getSpecification().getAssociations(
040                ObjectAssociationFilters.PROPERTIES)) {
041                // ignore hidden properties
042                if (property.isVisible(context.getSession(), adapter).isVetoed()) {
043                    continue;
044                }
045                // ignore disabled properties
046                if (property.isUsable(context.getSession(), adapter).isVetoed()) {
047                    continue;
048                }
049                final OneToOneAssociation otoa = (OneToOneAssociation) property;
050                final ObjectAdapter value = otoa.get(adapter);
051                if (otoa.isAssociationValid(adapter, value).isVetoed()) {
052                    if (buf.length() > 0) {
053                        buf.append(", ");
054                    }
055                    buf.append(property.getName());
056                }
057            }
058            if (buf.length() > 0) {
059                return "Invalid properties: " + buf.toString();
060            }
061            return null;
062        }
063    
064    }