    001// Copyright 2007 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.internal.services;
    016
    017/**
    018 * Interface used when assembling an attribute value that contains expansions.
    019 */
    020public interface StringProvider
    021{
    022    /**
    023     * Ask the object to provide the desired string. Often this involves computing the string value dynamically, or
    024     * aggregating together multiple StringProviders.
    025     */
    026    String provideString();
    027}