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https://issues.apache.org/jira/browse/DERBY-5955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dag H. Wanvik updated DERBY-5955:
---------------------------------
Attachment: derby-5955-add-cp2-to-jars.diff
Uploading patch derby-5955-add-cp2-to-jars.diff. This changes the top level
build.xml to add a new attribute to MANIFEST.MF in Derby's jar files:
Profile: compact2
This will ensure that if Derby is ever attempted run on a less capable
platform, i.e. compact1, java will issue an error informing the user that Derby
requires at least compact2 level.
Cf. this quite in http://openjdk.java.net/jeps/161:
"jar — The JAR-file manifest specification will be extended with a new
attribute which can be used to specify the minimum Profile required by the code
in a JAR file."
In the current code line, the format used is the one shown above.
> Prepare Derby to run with Compact Profiles (JEP 161)
> ----------------------------------------------------
>
> Key: DERBY-5955
> URL: https://issues.apache.org/jira/browse/DERBY-5955
> Project: Derby
> Issue Type: Improvement
> Components: Documentation, JDBC, Services, SQL
> Reporter: Dag H. Wanvik
> Assignee: Dag H. Wanvik
> Attachments: apidiff.zip, client-graph.png,
> derby-5955-add-cp2-to-jars.diff, derby-5955-client-restructure-01.diff,
> derby-5955-client-restructure-01.stat,
> derby-5955-client-restructure-02-delta.diff,
> derby-5955-client-restructure-02.diff, derby-5955-client-restructure-02.stat,
> derby-5955-embed-restructure-01.diff, derby-5955-embed-restructure-01.stat,
> derby-5955-embed-restructure-02.diff, derby-5955-embed-restructure-02.stat,
> derby-5955-embed-restructure-03.diff, derby-5955-embed-restructure-03.stat,
> derby-5955-embed-restructure-04.diff, derby-5955-embed-restructure-04.stat,
> derby-5955-embed-restructure-followup.diff,
> derby-5955-embed-restructure-followup.stat,
> derby-5955-new-non-jndi-ds-01.diff, derby-5955-new-non-jndi-ds-01.stat,
> derby-5955-new-non-jndi-ds-02.diff, derby-5955-new-non-jndi-ds-02.stat,
> derby-5955-proof-of-concept-2.diff, derby-5955-proof-of-concept-2.stat,
> derby-5955-proof-of-concept.diff, derby-5955-proof-of-concept.stat,
> derby-5955-ser.zip, embedded-graph.png, old-client-graph.png,
> old-embedded-graph.png, publishedapi.zip, publishedapi.zip
>
>
> While waiting for a Java module system (aka project Jigsaw), it has been
> decided to define a few subsets of the Java SE Platform Specification, cf JEP
> 161 ( http://openjdk.java.net/jeps/161).
> A quote from the JEP: "More broadly, this feature is intended to enable the
> migration of applications currently built on top of the Java ME Connected
> Device Configuration (CDC) to appropriate Profiles of the Java SE Platform,
> part of the long-term effort to converge CDC with Java SE."
> It would be good if we make Derby to run on such limited profiles. The
> current proposal places JDBC in Compact Profile 2 (cf. link above), while
> other libraries used by Derby, e.g. javax.naming (JNDI) are in Profile 3
> (larger).
> It would be good if Derby could run on the smallest posible platform, i.e.
> Profile 2, but that will probably involve some changes to make Derby
> gracefully limit functionality when some libraries are missing.
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