| /* |
| * 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.shiro.session.mgt; |
| |
| /** |
| * @since 1.3 |
| */ |
| public interface UpdateDeferrable { |
| |
| /** |
| * Returns {@code true} if modifications that require persistence (updates) can be deferred until a future time, |
| * for example, at the end of a request or method invocation. Returns {@code false} if update operations must |
| * be relayed immediately to the backing data store as they occur. |
| * <p/> |
| * This interface corresponds only to updates; create and delete operations will always be immediately relayed |
| * to the underlying data store. |
| * <p/> |
| * A {@code true} value reduces the number of times the backing data store (such as a cache or database) must be |
| * accessed during particular scope (e.g. request or thread). A {@code false} value indicates that the backing |
| * data store will handle updates immediately, probably because it has its own caching mechanism in place to limit |
| * data store round trips. For example, if the data store had a built-in first level cache with a pluggable |
| * second-level cache). |
| * <p/> |
| * For Shiro 1.3 and later, the default value is {@code true}. Setting this to {@code false} reverts to Shiro |
| * 1.2 and earlier behavior, but expects the backing datastore to handle many reads/writes during a single |
| * request or invocation. |
| * |
| * @return {@code true} if state modifications during the course of a request or invocation can be persisted at the |
| * end of a request/invocation, or {@code false} if session modifications must be immediately relayed to |
| * backing data store as they occur. |
| * @see <a href="https://issues.apache.org/jira/browse/SHIRO-317">SHIRO-317</a> |
| * @since 1.3 |
| */ |
| boolean isUpdateDeferred(); |
| |
| void setUpdateDeferred(boolean deferred); |
| } |