[jira] Reopened: (JCR-2067) FileDataStore: only open a stream when really necessary

["Thomas Mueller (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JCR-2067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Mueller reopened JCR-2067:
---------------------------------


I just found out, there is already a class LazyFileInputStream (that does basically the same) in the package org.apache.jackrabbit.util. However this one doesn't close the file after reading the last byte.

> FileDataStore: only open a stream when really necessary
> -------------------------------------------------------
>
>                 Key: JCR-2067
>                 URL: https://issues.apache.org/jira/browse/JCR-2067
>             Project: Jackrabbit Content Repository
>          Issue Type: Improvement
>            Reporter: Thomas Mueller
>            Assignee: Thomas Mueller
>
> Currently, PropertyImpl.getValue() opens a FileInputStream if the FileDataStore is used.
> If the application doesn't use the value, this stream is never closed.
> PropertyImpl.getValue():
>   return internalGetValue().toJCRValue(session);
> InternalValue.toJCRValue(..):
>   case PropertyType.BINARY:
>     return new BinaryValue(((BLOBFileValue) val).getStream());
> BLOBInDataStore.getStream():
>   return getDataRecord().getStream();
> FileDataRecord.getStream():
>   return new FileInputStream(file);
> One solution is to return a 'lazy' file input stream that only opens the file when reading from the stream (and closing the file when the last byte was read). Maybe there is already a class (in Apache Commons maybe?) that can do that.

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