    001// Copyright 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.services;
    016
    017import org.apache.tapestry5.MarkupWriter;
    018
    019/**
    020 * Default object renderer as a catch all for class <code>Object</code>.
    021 *
    022 * @since 5.2.0
    023 */
    024public class DefaultObjectRenderer implements ObjectRenderer<Object>
    025{
    026    public void render(Object object, MarkupWriter writer)
    027    {
    028        try
    029        {
    030            writer.write(String.valueOf(object));
    031        }
    032        catch (Exception ex)
    033        {
    034            writer.element("span", "class", "t-render-object-error");
    035
    036            String message = ex.getMessage();
    037
    038            String exceptionClassName = ex.getClass().getName();
    039
    040            String exceptionId = message == null ? exceptionClassName : String.format("(%s) %s", ex
    041                    .getClass().getName(), message);
    042
    043            writer.writef("Exception rendering description for object of type %s: %s", object
    044                    .getClass().getName(), exceptionId);
    045
    046            writer.end();
    047
    048        }
    049    }
    050}