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From "Sergio Bossa (JIRA)" <j...@apache.org>
Subject [jira] Updated: (COLLECTIONS-270) Proposal for a new List implementation: BackedList
Date Mon, 08 Oct 2007 09:45:50 GMT

     [ https://issues.apache.org/jira/browse/COLLECTIONS-270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergio Bossa updated COLLECTIONS-270:
-------------------------------------

    Attachment: BackedListTest.java
                DataAccessStrategy.java
                BackedList.java

Here are BackedList sources and tests.

Tests need JUnit 3.8.1+ and JMock 1.1.

> Proposal for a new List implementation: BackedList
> --------------------------------------------------
>
>                 Key: COLLECTIONS-270
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-270
>             Project: Commons Collections
>          Issue Type: New Feature
>          Components: List
>    Affects Versions: 3.2
>            Reporter: Sergio Bossa
>         Attachments: BackedList.java, BackedListTest.java, DataAccessStrategy.java
>
>
> Here is a new List implementation named BackedList, to use for transparently accessing
values of a generic data source as it were a normal List.
> This List implementation dynamically accesses data source values through a proper strategy
object, keeping in memory only a limited, configurable, buffer of values.
> So, it is useful for:
> 1) Providing a List-like view of different data source values.
> 2) Avoiding to pre-load all values in a standard list, providing better performances
and less memory consumption.
> As a side note, this list implementation is already used in production for implementing
pagination over a relational data source.

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