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From "Richard S. Hall (JIRA)" <j...@apache.org>
Subject [jira] Commented: (FELIX-2663) Allow ConfigInstaller to perform placeholder substitution from framework properties
Date Thu, 14 Oct 2010 20:50:32 GMT

    [ https://issues.apache.org/jira/browse/FELIX-2663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921115#action_12921115

Richard S. Hall commented on FELIX-2663:

File Install just needs to use BundleContext.getProperty() for its property lookup instead
of calling System.getProperty() directly, since the former already exposes system properties
unless they are overwritten by configuration properties.

> Allow ConfigInstaller to perform placeholder substitution from framework properties
> -----------------------------------------------------------------------------------
>                 Key: FELIX-2663
>                 URL: https://issues.apache.org/jira/browse/FELIX-2663
>             Project: Felix
>          Issue Type: Improvement
>          Components: File Install
>    Affects Versions: fileinstall-3.0.2
>            Reporter: David Hay
> The ConfigInstaller class will perform placeholder substitution using configuration values
defined elsewhere in the .cfg file or using System properties.  Would be nice if it could
also use properties defined by the framework (i.e. BundleContext.getProperty())
> The use case is this:  As part of the OSGi framework initialization, some properties
are set on the framework that define things such as a "home" directory.  The various configuration
files could then refer to resources relative to this "home" directory.  For example:
> props.setProperty("app.home", homeDir); // homeDir provided by JNDI config, env variable,
> frameworkFactory.newFramework(props);
> ...
> Then, in a configuration file read by the FileInstall bundle, it would be nice to be
able to do:
> data.directory=${app.home}/data/

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