ZK Huge Grouping Model
Robert Wenzel, Engineer, Potix Corporation
August, 2013
ZK 6.5 (or later)
This page is under construction, so we cannot guarantee the accuracy of the content!
Introduction
bla bla you have some big data... how to display
article already handles display big data in a flat list http://books.zkoss.org/wiki/Small_Talks/2009/July/Handling_huge_data_using_ZK
The challenge
grouping is a powerful feature in ZK but also adds an extra layer of complexity
paging and grouping challenges
1. groups can be open or closed (also interactively) -> the number of pages changes, when opening/closing nodes... (needs efficient counting, and state keeping)
2. groups can have arbitrary number of children -> random access to a specific page ... how to know the current group and position inside the group --> implement a scalable search
1. + 2. combining both in an efficient, memory preserving way limitations... needs to store the state in memory (humans are limited, so one is unlikely to toggle 100+ groups)
Implementation
Generating the Test data
Counting & State keeping
Random Access Paging
Appendix
Download
Comments
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