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
020package org.apache.isis.core.metamodel.specloader.specimpl;
021
022import org.apache.isis.core.metamodel.adapter.MutableProposedHolder;
023import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
024import org.apache.isis.core.metamodel.facetapi.FeatureType;
025import org.apache.isis.core.metamodel.facets.TypedHolder;
026import org.apache.isis.core.metamodel.spec.Instance;
027import org.apache.isis.core.metamodel.spec.feature.OneToOneActionParameter;
028
029public class OneToOneActionParameterImpl extends ObjectActionParameterAbstract implements OneToOneActionParameter {
030
031    public OneToOneActionParameterImpl(final int index, final ObjectActionImpl actionImpl, final TypedHolder peer) {
032        super(index, actionImpl, peer);
033    }
034
035    @Override
036    public FeatureType getFeatureType() {
037        return FeatureType.ACTION_PARAMETER;
038    }
039
040    @Override
041    public boolean isObject() {
042        return true;
043    }
044
045
046    // /////////////////////////////////////////////////////////////
047    // getInstance
048    // /////////////////////////////////////////////////////////////
049
050    @Override
051    public Instance getInstance(final ObjectAdapter adapter) {
052        final OneToOneActionParameter specification = this;
053        return adapter.getInstance(specification);
054    }
055
056    // //////////////////////////////////////////////////////////////////////
057    // get, set
058    // //////////////////////////////////////////////////////////////////////
059
060    /**
061     * Gets the proposed value of the {@link Instance} (downcast as a
062     * {@link MutableProposed}, wrapping the proposed value into a
063     * {@link ObjectAdapter}.
064     */
065    @Override
066    public ObjectAdapter get(final ObjectAdapter owner) {
067        final MutableProposedHolder proposedHolder = getProposedHolder(owner);
068        final Object proposed = proposedHolder.getProposed();
069        return getAdapterMap().adapterFor(proposed);
070    }
071
072    /**
073     * Sets the proposed value of the {@link Instance} (downcast as a
074     * {@link MutableProposed}, unwrapped the proposed value from a
075     * {@link ObjectAdapter}.
076     */
077    public void set(final ObjectAdapter owner, final ObjectAdapter newValue) {
078        final MutableProposedHolder proposedHolder = getProposedHolder(owner);
079        final Object newValuePojo = newValue.getObject();
080        proposedHolder.setProposed(newValuePojo);
081    }
082
083    private MutableProposedHolder getProposedHolder(final ObjectAdapter owner) {
084        final Instance instance = getInstance(owner);
085        if (!(instance instanceof MutableProposedHolder)) {
086            throw new IllegalArgumentException("Instance should implement MutableProposedHolder");
087        }
088        final MutableProposedHolder proposedHolder = (MutableProposedHolder) instance;
089        return proposedHolder;
090    }
091
092
093}