    001//  Copyright 2008,, 2009 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007//     http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.ioc.internal;
    016
    017import org.apache.tapestry5.ioc.Invokable;
    018import org.apache.tapestry5.ioc.ObjectCreator;
    019import org.apache.tapestry5.ioc.OperationTracker;
    020
    021/**
    022 * Makes sure the operations tracker is notified knows that a service is being realized.
    023 */
    024public class OperationTrackingObjectCreator implements ObjectCreator
    025{
    026    private final OperationTracker tracker;
    027
    028    private final String message;
    029
    030    private final ObjectCreator delegate;
    031
    032    public OperationTrackingObjectCreator(OperationTracker tracker, String message, ObjectCreator delegate)
    033    {
    034        this.tracker = tracker;
    035        this.message = message;
    036        this.delegate = delegate;
    037    }
    038
    039    @Override
    040    public Object createObject()
    041    {
    042        Invokable<Object> operation = new Invokable<Object>()
    043        {
    044            @Override
    045            public Object invoke()
    046            {
    047                return delegate.createObject();
    048            }
    049        };
    050
    051        return tracker.invoke(message, operation);
    052    }
    053}