    001    // Copyright 2006, 2007, 2008 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
    015    package org.apache.tapestry5.services;
    016
    017    import org.apache.tapestry5.Asset;
    018    import org.apache.tapestry5.ioc.Resource;
    019
    020    /**
    021     * Used by {@link AssetSource} to create new {@link Asset}s as needed.
    022     *
    023     * @see org.apache.tapestry5.services.AssetSource
    024     */
    025    public interface AssetFactory
    026    {
    027        /**
    028         * Returns the Resource representing the root folder of the domain this factory is responsible for.
    029         */
    030        Resource getRootResource();
    031
    032        /**
    033         * Creates an instance of an asset. Starting with 5.1.0.0, it is preferred (but not required) that the factory
    034         * return an instance of {@link org.apache.tapestry5.Asset2}.
    035         *
    036         * @param resource a resource within this factories domain (derived from the {@linkplain #getRootResource() root
    037         *                 resource})
    038         * @return an Asset for the resource
    039         */
    040        Asset createAsset(Resource resource);
    041    }