[jbosstools-issues] [JBoss JIRA] (JBIDE-2173) Performance problems in reverse engineering for databases with a lot of tables

[Denis Golovin (JIRA)]

     [ https://issues.jboss.org/browse/JBIDE-2173?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Denis Golovin updated JBIDE-2173:
---------------------------------

    Summary: Performance problems in reverse engineering for databases with a lot of tables  (was: Performance problems with rather big db - Hibernate Console view can't process rather big amount of tables)

    
> Performance problems in reverse engineering for databases with a lot of tables
> ------------------------------------------------------------------------------
>
>                 Key: JBIDE-2173
>                 URL: https://issues.jboss.org/browse/JBIDE-2173
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: hibernate
>            Reporter: Vitali Yemialyanchyk
>            Assignee: Dmitry Geraskov
>            Priority: Critical
>             Fix For: 3.4.0.M1
>
>         Attachments: HSQLDB_JUnit_Screens.zip, JBIDE-2173_20081119.zip, JBIDE-2173_20100121.zip, JBIDE-2173_20100126.zip, JBIDE-2173_20100126_2.zip, JBIDE-2173_20100127_patch.zip, JBIDE-2173_20100211_patch.txt, JBIDE-2173_20110316_patch.txt, MySQL_JUnit_Screens.zip, Oracle_JUnit_Screens.zip, Postgre_JUnit_Screens.zip, with-and-without JBIDE-2173_20100127_patch failed junits.jpg
>
>
> For test purposes I create org.hibernate.eclipse.console.test -> org.hibernate.eclipse.console.db.test.BigDBCreateTest - the main goal of this class is creation test database with specified number of related tables. Then with help of BigDBCreateTest I create a big enough databases with different number of tables in it. And then I try to test hibernate plugins performance. I create a configuration for my test db.
> In Hibernate Console I try to expand tree. Here is a time:
> 200 tables in db - takes 40 seconds;
> 300 tables in db - takes 2 minutes 45 seconds;
> 500 tables in db - too long I do not get results.
> Remark: I use MySQL as test db. 3000 tables - too much for MySQL. Also - it is intresting - when I create such big db - I try to expand Hibernate Console tree - I get MySQL exception - but in this case Hibernate Console display all items quickly!
> JBIDE-2162 is related;
> JBIDE-2163 & JBIDE-2164 are related by implication - till the moment when I have fixed its in my test environment - I can't see performance problems.

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