    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
    015    package org.apache.tapestry5.services;
    016
    017    import 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     */
    024    public 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    }