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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
IPageRecorder.java | - | - | - | - |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.tapestry.engine;
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import org.apache.tapestry.IPage;
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import org.apache.tapestry.event.ChangeObserver;
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/**
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* Defines an object that can observe changes to properties of a page and its components, store the
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* state of the page between request cycles, and restore a page's state on a subsequent request
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* cycle.
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* <p>
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* Concrete implementations of this can store the changes in memory, as client-side cookies, in a
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* flat file, or in a database.
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*
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* @author Howard Lewis Ship
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*/
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public interface IPageRecorder extends ChangeObserver |
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{ |
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/**
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* Persists all changes that have been accumulated. If the recorder saves change incrementally,
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* this should ensure that all changes have been persisted.
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* <p>
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* After commiting, a page recorder automatically locks itself.
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*/
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public void commit(); |
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/**
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* Rolls back the page to the currently persisted state.
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* <p>
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* A page recorder can only rollback changes to properties which have changed at some point.
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* This can cause some minor problems, addressed by
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* {@link org.apache.tapestry.event.PageDetachListener#pageDetached(org.apache.tapestry.event.PageEvent)}.
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*/
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public void rollback(IPage page); |
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} |
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