/*
* 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.isis.core.metamodel.spec.feature;
import com.google.common.base.Function;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.consent.Consent;
import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
import org.apache.isis.core.metamodel.spec.ObjectSpecification;
/**
* Provides reflective access to a field on a domain object that is used to
* reference another domain object.
*/
public interface OneToOneAssociation extends ObjectAssociation, OneToOneFeature, MutableCurrentHolder {
/**
* Initialise this field in the specified object with the specified
* reference - this call should only affect the specified object, and not
* any related objects. It should also not be distributed. This is strictly
* for re-initialising the object and not specifying an association, which
* is only done once.
*/
void initAssociation(ObjectAdapter inObject, ObjectAdapter associate);
/**
* Determines if the specified reference is valid for setting this field in
* the specified object, represented as a {@link Consent}.
*/
public Consent isAssociationValid(
final ObjectAdapter targetAdapter,
final ObjectAdapter proposedAdapter,
final InteractionInitiatedBy interactionInitiatedBy);
// //////////////////////////////////////////////////////
// Functions
// //////////////////////////////////////////////////////
public static class Functions {
public static Function<String, OneToOneAssociation> fromId(final ObjectSpecification noSpec) {
return new Function<String, OneToOneAssociation>() {
@Override
public OneToOneAssociation apply(final String id) {
return (OneToOneAssociation) noSpec.getAssociation(id);
}
};
}
}
}