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From "Luca Burgazzoli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ARIES-1601) Support for nested property placeholders
Date Wed, 24 Aug 2016 16:44:20 GMT

    [ https://issues.apache.org/jira/browse/ARIES-1601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15435258#comment-15435258
] 

Luca Burgazzoli commented on ARIES-1601:
----------------------------------------

[~gnt] 

As per our discussion today on IRC, I've opened a PR with initial support for nested property
placeholder resolutions which is based on commons-lang StrSubstitutor (with minimal modifications
to reduce dependencies).

Let me know if it is good enough and if there is anything I should change.



> Support for nested property placeholders
> ----------------------------------------
>
>                 Key: ARIES-1601
>                 URL: https://issues.apache.org/jira/browse/ARIES-1601
>             Project: Aries
>          Issue Type: Improvement
>          Components: Blueprint
>            Reporter: Luca Burgazzoli
>
> As today property placeholders are resolved sequentially but it would be nice to have
the possibility to resolve nested placeholders like:
> {code}
> ${jre-${java.specification.version}}
> {code}
> The problem in blueprint seems to be located in [AbstractPropertyPlaceholder|https://github.com/apache/aries/blob/trunk/blueprint/blueprint-core/src/main/java/org/apache/aries/blueprint/ext/AbstractPropertyPlaceholder.java#L429-L455]
> I've been using StrSubstitutor from Commons-Lang and could be ported to blueprint-ext.
> See:
> - https://issues.apache.org/jira/browse/LANG-482 
> - https://commons.apache.org/proper/commons-lang/javadocs/api-3.4/org/apache/commons/lang3/text/StrSubstitutor.html



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