[jboss-jira] [JBoss JIRA] Closed: (JBAS-5793) Array interception for pojos stored in FIELD granularity web sessions

[Brian Stansberry (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBAS-5793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Stansberry closed JBAS-5793.
----------------------------------

    Resolution: Done


> Array interception for pojos stored in FIELD granularity web sessions
> ---------------------------------------------------------------------
>
>                 Key: JBAS-5793
>                 URL: https://jira.jboss.org/jira/browse/JBAS-5793
>             Project: JBoss Application Server
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: Clustering, Web (Tomcat) service
>            Reporter: Brian Stansberry
>            Assignee: Brian Stansberry
>             Fix For: JBossAS-5.0.0.CR2
>
>
> PojoCache 2.2.0.CR5+ supports array interception.  Task here is to uncomment the section in jbossweb-cluster.aop/META-INF/jboss-aop.xml that enables it and add a couple tweaks to  the FIELD test cases so it gets exercised.
> This can't be done until aop moves to 2.0.0.CR14.
> Array interception means invoking the changeIt(...) method in a web session pojo would result in the change being detected and just one String being replicated:
> public class Pojo {
>   private String[] array = new String[1000];
>    public void changeIt(int index, String newValue) {
>        this.array[index] = newValue;
>    }
> }
> Before this PojoCache improvement, PC wouldn't detect the array element change, so the changeIt(...) method would have had to reassign the 'array' field:
> public class Pojo {
>   private String[] array = new String[1000];
>    public void changeIt(int index, String newValue) {
>        String[] array1 = array;
>        array1[index] = newValue;
>        // Do a new field assignment so PojoCache knows something changed
>        this.array = array1;
>    }
> }
> Besides being odd looking and easy to forget to do, that code would result in the whole array being replicated rather than just one String.

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