| // 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.tapestry5.services; |
| |
| import java.util.Map; |
| |
| /** |
| * An object which manages a list of {@link org.apache.tapestry5.services.InvalidationListener}s. There are multiple |
| * event hub services implementing this interface, each with a specific marker annotation; each can register listeners |
| * and fire events; these are based on the type of resource that has been invalidated. Tapestry has built-in support |
| * for: |
| * <dl> |
| * <dt>message catalog resources |
| * <dd>{@link org.apache.tapestry5.services.ComponentMessages} marker annotation |
| * <dt>component templates |
| * <dd>{@link org.apache.tapestry5.services.ComponentTemplates} marker annotation |
| * <dt>component classes |
| * <dd>{@link org.apache.tapestry5.services.ComponentClasses} marker annotation |
| * </dl> |
| * |
| * Starting in Tapestry 5.3, these services are disabled in production (it does nothing). |
| * |
| * @since 5.1.0.0 |
| */ |
| public interface InvalidationEventHub |
| { |
| /** |
| * Adds a listener, who needs to know when an underlying resource of a given category has changed (so that the |
| * receiver may discard any cached data that may have been invalidated). Does nothing in production mode. |
| * |
| * @deprecated in 5.4, use {@link #addInvalidationCallback(Runnable)} instead} |
| */ |
| void addInvalidationListener(InvalidationListener listener); |
| |
| /** |
| * Adds a callback that is invoked when an underlying tracked resource has changed. Does nothing in production mode. |
| * |
| * @since 5.4 |
| */ |
| void addInvalidationCallback(Runnable callback); |
| |
| /** |
| * Adds a callback that clears the map. |
| * |
| * @since 5.4 |
| */ |
| void clearOnInvalidation(Map<?,?> map); |
| } |