| /* |
| * $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.tiles.autotag.core.runtime; |
| |
| import java.io.IOException; |
| import java.io.StringWriter; |
| import java.io.Writer; |
| |
| import org.apache.tiles.autotag.core.runtime.util.NullWriter; |
| |
| /** |
| * Base class for the abstraction of the body. |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public abstract class AbstractModelBody implements ModelBody { |
| |
| /** |
| * The default writer to use. |
| */ |
| private Writer defaultWriter; |
| |
| /** |
| * Constructor. |
| * |
| * @param defaultWriter The default writer to use. |
| */ |
| public AbstractModelBody(Writer defaultWriter) { |
| this.defaultWriter = defaultWriter; |
| } |
| |
| @Override |
| public void evaluate() throws IOException { |
| evaluate(defaultWriter); |
| } |
| |
| @Override |
| public String evaluateAsString() throws IOException { |
| StringWriter writer = new StringWriter(); |
| try { |
| evaluate(writer); |
| } finally { |
| writer.close(); |
| } |
| String body = writer.toString(); |
| if (body != null) { |
| body = body.replaceAll("^\\s*|\\s*$", ""); |
| if (body.length() <= 0) { |
| body = null; |
| } |
| } |
| return body; |
| } |
| |
| @Override |
| public void evaluateWithoutWriting() throws IOException { |
| NullWriter writer = new NullWriter(); |
| try { |
| evaluate(writer); |
| } finally { |
| writer.close(); |
| } |
| } |
| |
| } |