    001// Copyright 2010 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;
    016
    017import org.apache.tapestry5.PropertyConduit2;
    018
    019
    020/**
    021 * Extension to {@link org.apache.tapestry5.PropertyConduit2} that adds a method to determine the name of the property.
    022 *
    023 * @since 5.2.0
    024 *
    025 */
    026public interface InternalPropertyConduit extends PropertyConduit2
    027{
    028    /**
    029     * Returns the name of the property read or updated by the conduit or null.
    030     * If the expression points to a property on a bean (e.g. user.name) this method returns the last property in the chain.
    031     * Otherwise this method returns {@code null}.
    032     *
    033     * @return property name or {@code null}
    034     *
    035     */
    036    String getPropertyName();
    037}