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Date: Wed, 2 Feb 2011 10:01:28 +0000 (UTC)
From: "Thomas Mueller (JIRA)" <jira@apache.org>
To: dev@jackrabbit.apache.org
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Subject: [jira] Resolved: (JCR-2872) DataStore: changing the modified date
 fails if the file is open for reading (Windows only)
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     [ https://issues.apache.org/jira/browse/JCR-2872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Mueller resolved JCR-2872.
---------------------------------

    Resolution: Fixed

Committed in the trunk and 2.2 branch.

> DataStore: changing the modified date fails if the file is open for reading (Windows only)
> ------------------------------------------------------------------------------------------
>
>                 Key: JCR-2872
>                 URL: https://issues.apache.org/jira/browse/JCR-2872
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core
>         Environment: Windows
>            Reporter: Thomas Mueller
>            Assignee: Thomas Mueller
>             Fix For: 2.2.3
>
>
> If the file is open for reading, Windows doesn't allow to change the last modified time using File.setLastModified():
> org.apache.jackrabbit.core.data.DataStoreException: Failed to update record
> modified date: 2ac72495fd1e270777821b8a872903c79c84a8d9
>         at org.apache.jackrabbit.core.data.FileDataStore.addRecord(FileDataStore.java:250)
>         at org.apache.jackrabbit.core.value.BLOBInDataStore.getInstance(BLOBInDataStore.java:119)
>         at org.apache.jackrabbit.core.value.InternalValue.getBLOBFileValue(InternalValue.java:619)
>         at org.apache.jackrabbit.core.value.InternalValue.create(InternalValue.java:369)
>         at org.apache.jackrabbit.core.value.InternalValueFactory.create(InternalValueFactory.java:94)
>         at org.apache.jackrabbit.core.value.ValueFactoryImpl.createBinary(ValueFactoryImpl.java:74)
> Test case and possible workaround:
> import java.io.File;
> import java.io.FileInputStream;
> import java.io.RandomAccessFile;
> public class Test {
>     public static void main(String... args) throws Exception {
>         String name = "test.txt";
>         File test = new File(name);
>         RandomAccessFile r = new RandomAccessFile(name, "rw");
>         r.write(0);
>         r.close();
>         long mod = test.lastModified();
>         Thread.sleep(3000);
>         FileInputStream in = new FileInputStream(name);
>         if (!test.setLastModified(test.lastModified()+1)) {
>         	if (!test.canWrite()) {
>         		System.out.println("Can't write to " + name);
>         	} else {
>             	System.out.println("canWrite ok");
>             	r = new RandomAccessFile(name, "rw");
>             	int old = r.read();
>             	r.seek(0);
>             	r.write(old);
>             	r.close();
>         	}
>         } else {
>         	System.out.println("setLastModified ok");
>         }
>         System.out.println("Modified old: " + mod);
>         System.out.println("Modified now: " + test.lastModified());
>         in.close();
>         System.out.println("input closed");
>         if (!test.setLastModified(test.lastModified()+1)) {
>         	if (!test.canWrite()) {
>         		System.out.println("Can't write to " + name);
>         	} else {
>             	System.out.println("canWrite ok");
>         	}
>         } else {
>         	System.out.println("setLastModified ok");
>         }
>         new File(name).delete();
>     }
> }

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