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From "Daniel John Debrunner (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2150) Reduce use of synchronized collections in GenericLanguageConnectionContext
Date Wed, 10 Jan 2007 18:08:27 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12463651

Daniel John Debrunner commented on DERBY-2150:

patch 1b Looks good, minor comment on this line:

maxActsSize = Math.max(acts.size(), maxActsSize);

This will mean that maxActsSize (a field)  is always modified, even if it isn't changing.
Would a simple if statement be better?

if (acts.size() > maxActsSize)
    maxActsSize = acts.size();

> Reduce use of synchronized collections in GenericLanguageConnectionContext
> --------------------------------------------------------------------------
>                 Key: DERBY-2150
>                 URL: https://issues.apache.org/jira/browse/DERBY-2150
>             Project: Derby
>          Issue Type: Improvement
>          Components: Performance, SQL
>    Affects Versions:
>            Reporter: Knut Anders Hatlen
>         Assigned To: Knut Anders Hatlen
>            Priority: Minor
>         Attachments: derby-2150-1a.diff, derby-2150-1b.diff
> In org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext, it is probably safe
to replace some of the synchronized collections with unsynchronized ones. This should be investigated,
and the unnecessary synchronization should be removed. See discussion here: http://www.nabble.com/Use-of-synchronized-containers-in-engine-code-tf2754469.html

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