Comments on: How to setup a mysql data source for Persevere

By: Antonio Fentanes

Antonio Fentanes — Mon, 11 Oct 2010 06:37:56 +0000

Hi, i have a question.

Any idea to avoid this exception?
java.lang.RuntimeException: No new unique key was generated from creating a new object
i have a my sql table with primary non incremental key
i hope you can helpme
thanks

By: yww

yww — Thu, 15 Apr 2010 11:13:18 +0000

hi , neyric

Thanks!
Can I add a new column in the web(explorer.html) without modify the config or database?

This can be?
Persevere support to add new column ?

Persevere whether support to add new column in the web?explorer.html??

By: neyric

neyric — Thu, 15 Apr 2010 09:27:17 +0000

@yww : you either don’t have this column in the database or in the “datacolumns” of your config…

By: yww

yww — Thu, 15 Apr 2010 08:55:03 +0000

Hi , neyric

i use mysql. success! but ,Have a wrong When I set column!

my error:
Error: Unable to load /persevere1.0/userstest123/1 status:500

??: java.lang.RuntimeException: java.lang.RuntimeException: The column sex is
not registered as a valid column in this table

help me ! Thanks!!

By: yww

yww — Wed, 14 Apr 2010 07:29:29 +0000

hi, my error :

2010-4-14 15:26:19 org.persvr.remote.PersevereFilter$DefaultHandler call waring: org.mozilla.javascript.EcmaError: AccessError: Writing to Customer/1 is not permitted, you do not have write permission

Why? Thanks!!

By: Ronan

Ronan — Sat, 20 Feb 2010 13:25:30 +0000

Hi.

I was wondering if there is a way to avoid the redundant “sourceClass” “driver” and “connection” info for each table.

Is there any way to inherit those properties ?

Thanks !

By: Juri Urbainczyk

Juri Urbainczyk — Fri, 15 Jan 2010 10:44:48 +0000

Hi,
the MySql JDBJ database driver file
has to be in the persevere/WEB-INF/lib directory and
*not* in persevere/lib
Cheers

By: Christian

Christian — Thu, 03 Dec 2009 07:58:18 +0000

It seems I can answer the second question myself:

dataColumns:[
...
],
“schema”:{
properties: {
nameOfObjectColumn: {lazy: false}
}
}

By: Christian

Christian — Wed, 02 Dec 2009 10:00:00 +0000

This looks very promising, especially the binding of foreign keys:

sources: [
{
...
dataColumns: [
...
{
foreignSource:"Name of foreign database data source",
databaseColumn:"Name of foreign key column",
relationshipType:"many-to-one",
objectColumn:"Name of object property to map to"
}
]
…
}]

Two question though:
- Is it possible to use inheritance with SQL sources, i.e. Table B inherits from Table A (Table B contains all fields of Table A plus its own)

- Is it possible to specify which references (to foreign rows) that should be automatically resolved (i.e. not lazy loaded)

By: jamie

jamie — Wed, 02 Sep 2009 23:56:01 +0000

I don’t know if the driver has been changed recently but I got an error…decided not to read the jdbc documentation — what a bad idea — it took me ages to figure out i was getting no where

my error

Access denied for user ‘root’@’localhost’ (using password: NO)

fixed line – change pass to password

“jdbc:mysql://localhost/myDatabase?user=myDbUser&password=yourPasswordHere”