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.progmodel.facets.collections.collection;
021
022import com.google.common.base.Function;
023
024import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
025import org.apache.isis.core.metamodel.adapter.mgr.AdapterManager;
026
027/**
028 * Uses the Commons Collection API to transform {@link Object}s into
029 * {@link ObjectAdapter} adapters.
030 * 
031 */
032public final class ObjectToAdapterFunction implements Function<Object,ObjectAdapter> {
033
034    private final AdapterManager adapterManager;
035
036    public ObjectToAdapterFunction(final AdapterManager adapterManager) {
037        this.adapterManager = adapterManager;
038    }
039
040    @Override
041    public ObjectAdapter apply(final Object object) {
042        return object != null? getAdapterManager().adapterFor(object): null;
043    }
044
045    // //////////////////////////////////////////////////////////////////
046    // Dependencies (from constructor)
047    // //////////////////////////////////////////////////////////////////
048
049    public AdapterManager getAdapterManager() {
050        return adapterManager;
051    }
052
053}