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| <FONT color="green">001</FONT> package org.apache.archiva.transaction;<a name="line.1"></a> |
| <FONT color="green">002</FONT> <a name="line.2"></a> |
| <FONT color="green">003</FONT> /*<a name="line.3"></a> |
| <FONT color="green">004</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.4"></a> |
| <FONT color="green">005</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * distributed with this work for additional information<a name="line.6"></a> |
| <FONT color="green">007</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.7"></a> |
| <FONT color="green">008</FONT> * to you under the Apache License, Version 2.0 (the<a name="line.8"></a> |
| <FONT color="green">009</FONT> * "License"); you may not use this file except in compliance<a name="line.9"></a> |
| <FONT color="green">010</FONT> * with the License. You may obtain a copy of the License at<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a> |
| <FONT color="green">013</FONT> *<a name="line.13"></a> |
| <FONT color="green">014</FONT> * Unless required by applicable law or agreed to in writing,<a name="line.14"></a> |
| <FONT color="green">015</FONT> * software distributed under the License is distributed on an<a name="line.15"></a> |
| <FONT color="green">016</FONT> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.16"></a> |
| <FONT color="green">017</FONT> * KIND, either express or implied. See the License for the<a name="line.17"></a> |
| <FONT color="green">018</FONT> * specific language governing permissions and limitations<a name="line.18"></a> |
| <FONT color="green">019</FONT> * under the License.<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> <a name="line.21"></a> |
| <FONT color="green">022</FONT> import java.io.File;<a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.io.IOException;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.util.ArrayList;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.util.List;<a name="line.25"></a> |
| <FONT color="green">026</FONT> <a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.codehaus.plexus.digest.Digester;<a name="line.27"></a> |
| <FONT color="green">028</FONT> <a name="line.28"></a> |
| <FONT color="green">029</FONT> /**<a name="line.29"></a> |
| <FONT color="green">030</FONT> * Implement commit/rollback semantics for a set of files.<a name="line.30"></a> |
| <FONT color="green">031</FONT> *<a name="line.31"></a> |
| <FONT color="green">032</FONT> */<a name="line.32"></a> |
| <FONT color="green">033</FONT> public class FileTransaction<a name="line.33"></a> |
| <FONT color="green">034</FONT> {<a name="line.34"></a> |
| <FONT color="green">035</FONT> private List<AbstractTransactionEvent> events = new ArrayList<AbstractTransactionEvent>();<a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> public void commit()<a name="line.37"></a> |
| <FONT color="green">038</FONT> throws TransactionException<a name="line.38"></a> |
| <FONT color="green">039</FONT> {<a name="line.39"></a> |
| <FONT color="green">040</FONT> List<TransactionEvent> toRollback = new ArrayList<TransactionEvent>( events.size() );<a name="line.40"></a> |
| <FONT color="green">041</FONT> <a name="line.41"></a> |
| <FONT color="green">042</FONT> for ( TransactionEvent event : events )<a name="line.42"></a> |
| <FONT color="green">043</FONT> {<a name="line.43"></a> |
| <FONT color="green">044</FONT> try<a name="line.44"></a> |
| <FONT color="green">045</FONT> {<a name="line.45"></a> |
| <FONT color="green">046</FONT> event.commit();<a name="line.46"></a> |
| <FONT color="green">047</FONT> <a name="line.47"></a> |
| <FONT color="green">048</FONT> toRollback.add( event );<a name="line.48"></a> |
| <FONT color="green">049</FONT> }<a name="line.49"></a> |
| <FONT color="green">050</FONT> catch ( IOException e )<a name="line.50"></a> |
| <FONT color="green">051</FONT> {<a name="line.51"></a> |
| <FONT color="green">052</FONT> try<a name="line.52"></a> |
| <FONT color="green">053</FONT> {<a name="line.53"></a> |
| <FONT color="green">054</FONT> rollback( toRollback );<a name="line.54"></a> |
| <FONT color="green">055</FONT> <a name="line.55"></a> |
| <FONT color="green">056</FONT> throw new TransactionException( "Unable to commit file transaction", e );<a name="line.56"></a> |
| <FONT color="green">057</FONT> }<a name="line.57"></a> |
| <FONT color="green">058</FONT> catch ( IOException ioe )<a name="line.58"></a> |
| <FONT color="green">059</FONT> {<a name="line.59"></a> |
| <FONT color="green">060</FONT> throw new TransactionException(<a name="line.60"></a> |
| <FONT color="green">061</FONT> "Unable to commit file transaction, and rollback failed with error: '" + ioe.getMessage() + "'",<a name="line.61"></a> |
| <FONT color="green">062</FONT> e );<a name="line.62"></a> |
| <FONT color="green">063</FONT> }<a name="line.63"></a> |
| <FONT color="green">064</FONT> }<a name="line.64"></a> |
| <FONT color="green">065</FONT> }<a name="line.65"></a> |
| <FONT color="green">066</FONT> }<a name="line.66"></a> |
| <FONT color="green">067</FONT> <a name="line.67"></a> |
| <FONT color="green">068</FONT> private void rollback( List<TransactionEvent> toRollback )<a name="line.68"></a> |
| <FONT color="green">069</FONT> throws IOException<a name="line.69"></a> |
| <FONT color="green">070</FONT> {<a name="line.70"></a> |
| <FONT color="green">071</FONT> for ( TransactionEvent event : toRollback )<a name="line.71"></a> |
| <FONT color="green">072</FONT> {<a name="line.72"></a> |
| <FONT color="green">073</FONT> event.rollback();<a name="line.73"></a> |
| <FONT color="green">074</FONT> }<a name="line.74"></a> |
| <FONT color="green">075</FONT> }<a name="line.75"></a> |
| <FONT color="green">076</FONT> <a name="line.76"></a> |
| <FONT color="green">077</FONT> /**<a name="line.77"></a> |
| <FONT color="green">078</FONT> * @param source<a name="line.78"></a> |
| <FONT color="green">079</FONT> * @param destination<a name="line.79"></a> |
| <FONT color="green">080</FONT> * @param digesters {@link List}&lt;{@link org.codehaus.plexus.digest.Digester}> digesters to use for checksumming<a name="line.80"></a> |
| <FONT color="green">081</FONT> */<a name="line.81"></a> |
| <FONT color="green">082</FONT> public void copyFile( File source, File destination, List<? extends Digester> digesters )<a name="line.82"></a> |
| <FONT color="green">083</FONT> {<a name="line.83"></a> |
| <FONT color="green">084</FONT> events.add( new CopyFileEvent( source, destination, digesters ) );<a name="line.84"></a> |
| <FONT color="green">085</FONT> }<a name="line.85"></a> |
| <FONT color="green">086</FONT> <a name="line.86"></a> |
| <FONT color="green">087</FONT> /**<a name="line.87"></a> |
| <FONT color="green">088</FONT> * @param content<a name="line.88"></a> |
| <FONT color="green">089</FONT> * @param destination<a name="line.89"></a> |
| <FONT color="green">090</FONT> * @param digesters {@link List}&lt;{@link org.codehaus.plexus.digest.Digester}> digesters to use for checksumming<a name="line.90"></a> |
| <FONT color="green">091</FONT> */<a name="line.91"></a> |
| <FONT color="green">092</FONT> public void createFile( String content, File destination, List<? extends Digester> digesters )<a name="line.92"></a> |
| <FONT color="green">093</FONT> {<a name="line.93"></a> |
| <FONT color="green">094</FONT> events.add( new CreateFileEvent( content, destination, digesters ) );<a name="line.94"></a> |
| <FONT color="green">095</FONT> }<a name="line.95"></a> |
| <FONT color="green">096</FONT> }<a name="line.96"></a> |
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| </PRE> |
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