| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed 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.tapestry.util.io; |
| |
| import java.io.IOException; |
| |
| import org.apache.tapestry.Tapestry; |
| import org.apache.tapestry.util.ComponentAddress; |
| |
| /** |
| * Squeezes a org.apache.tapestry.ComponentAddress. |
| * |
| * @author mindbridge |
| * @version $Id$ |
| * @since 2.2 |
| * |
| **/ |
| |
| public class ComponentAddressAdaptor implements ISqueezeAdaptor |
| { |
| private static final String PREFIX = "A"; |
| private static final char SEPARATOR = '/'; |
| |
| public String squeeze(DataSqueezer squeezer, Object data) throws IOException |
| { |
| ComponentAddress address = (ComponentAddress) data; |
| |
| // a 'null' id path is encoded as an empty string |
| String idPath = address.getIdPath(); |
| if (idPath == null) |
| idPath = ""; |
| |
| return PREFIX + address.getPageName() + SEPARATOR + idPath; |
| } |
| |
| public Object unsqueeze(DataSqueezer squeezer, String string) throws IOException |
| { |
| int separator = string.indexOf(SEPARATOR); |
| if (separator < 0) |
| throw new IOException(Tapestry.getMessage("ComponentAddressAdaptor.no-separator")); |
| |
| String pageName = string.substring(1, separator); |
| String idPath = string.substring(separator + 1); |
| if (idPath.equals("")) |
| idPath = null; |
| |
| return new ComponentAddress(pageName, idPath); |
| } |
| |
| public void register(DataSqueezer squeezer) |
| { |
| squeezer.register(PREFIX, ComponentAddress.class, this); |
| } |
| |
| } |