| package org.apache.velocity.app.event; |
| |
| /* |
| * 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. |
| */ |
| |
| import org.apache.velocity.context.Context; |
| |
| /** |
| * Reference 'Stream insertion' event handler. Called with object |
| * that will be inserted into stream via value.toString(). |
| * |
| * Please return an Object that will toString() nicely :) |
| * |
| * @author <a href="mailto:wglass@forio.com">Will Glass-Husain</a> |
| * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a> |
| * @version $Id$ |
| */ |
| public interface ReferenceInsertionEventHandler extends EventHandler |
| { |
| /** |
| * A call-back which is executed during Velocity merge before a reference |
| * value is inserted into the output stream. All registered |
| * ReferenceInsertionEventHandlers are called in sequence. If no |
| * ReferenceInsertionEventHandlers are are registered then reference value |
| * is inserted into the output stream as is. |
| * |
| * |
| * @param context current context |
| * @param reference Reference from template about to be inserted. |
| * @param value Value about to be inserted (after its <code>toString()</code> |
| * method is called). |
| * @return Object on which <code>toString()</code> should be called for |
| * output. |
| */ |
| Object referenceInsert(Context context, String reference, Object value); |
| |
| } |