[jbosstools-issues] [JBoss JIRA] Updated: (JBIDE-4895) Provide a better algorithm for layout of mapping diagrams

[Vitali Yemialyanchyk (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBIDE-4895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vitali Yemialyanchyk updated JBIDE-4895:
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    Attachment: screenshot-minimize-edge-crossing-example.jpg


this graph is result of Autolayout - the obvious enhansment here - selected region has 2 nodes with very long edge connection; there is a set of algorithms in graph theory which could help to enhance this.

> Provide a better algorithm for layout of mapping diagrams
> ---------------------------------------------------------
>
>                 Key: JBIDE-4895
>                 URL: https://jira.jboss.org/jira/browse/JBIDE-4895
>             Project: Tools (JBoss Tools)
>          Issue Type: Feature Request
>          Components: Hibernate
>    Affects Versions: 3.1.0.M2
>            Reporter: Yahor Radtsevich
>            Assignee: Vitali Yemialyanchyk
>             Fix For: LATER
>
>         Attachments: 3.1.0.M3_drawing-1.png, screenshot-minimize-edge-crossing-example.jpg
>
>
> Current mapping diagram drawing algorithm seems to be almost random (see 3.1.0.M3_drawing-1.png).
> A better algorithm should:
> 1. Never cross tables with lines.
> 2. Draw as few line crossings as possible.
> 3. Draw tables closer if they have more constraints.

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