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https://issues.apache.org/jira/browse/SLING-4801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Radu Cotescu updated SLING-4801:
--------------------------------
Description:
The {{org.apache.sling.scripting.javascript}} bundle should attempt to use
Nashorn, if available on the user's platform, for running JS code.
Alternatively it should switch to Rhino if the JRE is < 1.8.
Requirements:
* need to expose the {{jdk.nashorn.api.scripting;version="0.0.0.1_008_JavaSE"}}
package on JRE >= 1.8 in Sling's
{{launchpad/base/src/main/resources/jre-1.8.properties}} properties files
* the Rhino and Nashorn implementations need to co-exist, so that customers
still running on Java < 8 can use the Rhino implementation; the switch from
Rhino to Nashorn should happen automatically but should also be made
configurable in case customers really want to use a specific implementation;
while the Nashorn implementation requires Java 8 (and this can easily be
handled through the {{Require-Capability}} \[0\] and
{{Bundle-RequiredExecutionEnvironment}} \[1\] manifest headers) and the bundle
implementing Nashorn support won't start if the detected Java version is < 8, a
non-sticky run mode / configuration should handle the switch if customers would
still like to use the Rhino implementation on Java >= 8
* need to find a way to inject custom properties to all instances of a class,
similar to Rhino's host objects \[2\] (thread open on Nashorn's dev list at
\[3\]); this is needed in order to assure JavaScript API backwards
compatibility with the JS API exposed through the Rhino implementation
currently available in {{org.apache.sling.scripting.javascript}}; it seems that
Nashorn's public API only allows proxying an object, not all instances of a
class
\[0\] - http://wiki.osgi.org/wiki/Require-Capability
\[1\] - http://wiki.osgi.org/wiki/Bundle-RequiredExecutionEnvironment
\[2\] -
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Rhino/Embedding_tutorial#JavaScript_host_objects
\[3\] - http://mail.openjdk.java.net/pipermail/nashorn-dev/2015-June/004751.html
was:
The {{org.apache.sling.scripting.javascript}} bundle should attempt to use
Nashorn, if available on the user's platform, for running JS code.
Alternatively it should switch to Rhino if the JRE is < 1.8.
Requirements:
* need to expose the {{jdk.nashorn.api.scripting;version="0.0.0.1_008_JavaSE"}}
package on JRE >= 1.8 in Sling's
{{launchpad/base/src/main/resources/jre-1.8.properties}} properties files
* the Rhino and Nashorn implementations need to co-exist, so that customers
still running on Java < 8 can use the Rhino implementation; the switch from
Rhino to Nashorn should happen automatically but should also be made
configurable in case customers really want to use a specific implementation;
while the Nashorn implementation requires Java 8 (and this can easily be
handled through the {{Require-Capability}} \[0\] and
{{Bundle-RequiredExecutionEnvironment}} \[1\] manifest headers) and the bundle
implementing Nashorn support won't start if the detected Java version is < 8, a
non-sticky run mode / configuration should handle the switch if customers would
still like to use the Rhino implementation on Java >= 8
* need to find a way to inject custom properties to all instances of a class,
similar to Rhino's host objects \[2\] (thread open on Nashorn's dev list at
\[3\]); this is needed in order to assure JavaScript API backwards
compatibility with the JS API exposed through the Rhino implementation
currently available in {{org.apache.sling.scripting.javascript}}; it seems that
Nashorn's public API only allows proxying an object, not all instances of a
class
> Add support for Nashorn in the JavaScript Scripting Engine
> ----------------------------------------------------------
>
> Key: SLING-4801
> URL: https://issues.apache.org/jira/browse/SLING-4801
> Project: Sling
> Issue Type: Improvement
> Components: Scripting
> Affects Versions: Scripting JavaScript 2.0.16
> Reporter: Radu Cotescu
> Assignee: Radu Cotescu
> Attachments: SLING-4801.patch
>
>
> The {{org.apache.sling.scripting.javascript}} bundle should attempt to use
> Nashorn, if available on the user's platform, for running JS code.
> Alternatively it should switch to Rhino if the JRE is < 1.8.
> Requirements:
> * need to expose the
> {{jdk.nashorn.api.scripting;version="0.0.0.1_008_JavaSE"}} package on JRE >=
> 1.8 in Sling's {{launchpad/base/src/main/resources/jre-1.8.properties}}
> properties files
> * the Rhino and Nashorn implementations need to co-exist, so that customers
> still running on Java < 8 can use the Rhino implementation; the switch from
> Rhino to Nashorn should happen automatically but should also be made
> configurable in case customers really want to use a specific implementation;
> while the Nashorn implementation requires Java 8 (and this can easily be
> handled through the {{Require-Capability}} \[0\] and
> {{Bundle-RequiredExecutionEnvironment}} \[1\] manifest headers) and the
> bundle implementing Nashorn support won't start if the detected Java version
> is < 8, a non-sticky run mode / configuration should handle the switch if
> customers would still like to use the Rhino implementation on Java >= 8
> * need to find a way to inject custom properties to all instances of a class,
> similar to Rhino's host objects \[2\] (thread open on Nashorn's dev list at
> \[3\]); this is needed in order to assure JavaScript API backwards
> compatibility with the JS API exposed through the Rhino implementation
> currently available in {{org.apache.sling.scripting.javascript}}; it seems
> that Nashorn's public API only allows proxying an object, not all instances
> of a class
> \[0\] - http://wiki.osgi.org/wiki/Require-Capability
> \[1\] - http://wiki.osgi.org/wiki/Bundle-RequiredExecutionEnvironment
> \[2\] -
> https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Rhino/Embedding_tutorial#JavaScript_host_objects
> \[3\] -
> http://mail.openjdk.java.net/pipermail/nashorn-dev/2015-June/004751.html
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