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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5955) Prepare Derby to run with Compact Profiles (JEP 161)
Date Tue, 22 Jan 2013 07:52:14 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13559461#comment-13559461

Knut Anders Hatlen commented on DERBY-5955:

Thanks, Dag. Re 1): I was referring to DataSourceSerializationTest, which has code similar
to this in many test cases:

+        if (JDBC.vmSupportsJNDI()) {
+            final String EMBEDDED_CLASS = "EmbeddedDataSource";
+            deSerializeDs(EMBEDDED_CLASS, VERSION_10_0_2_1);
+            deSerializeDs(EMBEDDED_CLASS, VERSION_10_1_3_1);
+            deSerializeDs(EMBEDDED_CLASS, VERSION_10_2_2_0);
+            deSerializeDs(EMBEDDED_CLASS, VERSION_10_3_2_1);
+            deSerializeDs(EMBEDDED_CLASS, VERSION_10_10_1_0);
+            deSerializeDs(EMBEDDED_CLASS + _40Suffix, VERSION_10_10_1_0);
+        } else {
+            final String EMBEDDED_CLASS = "NonJNDIEmbeddedDataSource40";
+            deSerializeDs(EMBEDDED_CLASS, VERSION_10_10_1_0);
+        }

I was thinking that it might work in JNDI environment if the else branch was made unconditional.
It's not that simple in other tests, so I'm not suggesting that we run all DataSource tests
with both variants on platforms supporting JNDI. Just that we have some minimal sanity checking
if it doesn't require too much effort.
> 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-make-tests-run-01.diff, derby-5955-make-tests-run-01.stat, derby-5955-make-tests-run-02.diff,
derby-5955-make-tests-run-02.stat, derby-5955-make-tests-run-03.diff, 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-b.zip, 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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