commons-dev@db.apache.org Archives

commons-dbcp setLoginTimeout issue

2007-07-19T22:28:06Z


BasicDatasource.setLoginTimeout throws UnsupportedOperationException from
commons-dbcp. Is there any other way of implementing the timeout while pool
is trying to establish a physical connection to the database.

Thanks in advance
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apache.commons.pool.impl.GenericObjectPool.borrowObject(Unknown Source)

2006-08-18T09:45:23Z


While trying to get the connection pool of "Socket" objects, getting the
error as below.

java.lang.NullPointerException
at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(Unknown
Source)

The generic object pooling instance is not null. 

Can we have a pool of Socket connections using GenericObjectPooling (apache
commons pool)?

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The ddlToDatabase task

2005-11-21T15:08:47Z

The documentation for the ddlToDatabase task says to use the sub
element dataSource yet the example says to use,



I am asking this because when I use dataSource it is not accepted and
when I use database I get the error,
"org.apache.ddlutils.DynaSqlException: Could not get a connection from
the datasource". I am using the configuration

        
        
            
            
        

I tried a couple of things I changed driverClassName to
EmbeddedDataSource. I tried including the createDatabase subtag.

Any clues?

Philip


--
Philip Donaghy
donaghy.blogspot.com del.icio.us/donaghy
connection.oreilly.com/users/profile.public.php?user_id=4371
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Skype: philipmarkdonaghy
Office: +33 5 56 60 88 02
Mobile: +33 6 20 83 22 62

XMLBeans sample that was using commons-sql

2005-11-21T13:46:15Z

I have looked into changing the sample,
http://xmlbeans.apache.org/samples/vxsdb.html , that I wrote for XMLBeans.

It generates a Torque xml from an xml schema. I use to create the
database.xml to ddl using an ant task called DDLTask from the jakarta
commons sql package. I see now that the tasks have changed somewhat, and the
project as well.

Is there are roadmap for this package? I don't see any releases on ibiblio
or cvs.apache.org/repository 

If help is needed let me know where. I am compiling the latest source from
svn.

Sincerely,
Philip
--
Philip Donaghy
donaghy.blogspot.com 
del.icio.us/donaghy
connection.oreilly.com/users/profile.public.php?user_id=4371
www.linkedin.com/profile?viewProfile=&key=1811119
www.capferret.org 
Skype: philipmarkdonaghy
Office: +33 5 56 60 88 02
Mobile: +33 6 20 83 22 62

HttpClient and classpath issues

2005-07-11T17:48:23Z

Hi all,

> I'm running into some issues running the modem simulator on UNIX  (it runs fine on Windows)
and I was wondering if anyone else has encountered similar behaviour.  I'll try to briefly
sum up what's happening:
> 
> Here's my shell script:
> 
> java -verbose -classpath .:classes:lib\mail.jar:lib\activation.jar:lib\xalan.jar:lib\j2ee.jar:lib\sun-xercesImpl.jar:lib\xercesImpl.jar:lib\dom.jar:lib\saaj-api.jar:lib\saaj-impl.jar:lib\commons-httpclient-2.0.jar:lib\commons-logging.jar:lib\commons-logging-api.jar:lib\commons-httpclient-2.0.jar
com.supportsoft.acs.modemsimulator.simulate_n_modem $*
> 
> And now the console output (note that I've turned verbosity on, and included the most
important parts):
> 
> .Finished processing...
> Use -Kill commands to kill the modems
> [Loaded com.supportsoft.acs.modemsimulator.UserInterfaceHttpListener]
> [Loaded java.io.UnsupportedEncodingException from /usr/local/j2sdk1.4.1_07/jre/lib/rt.jar]
> 
>          -Kill_range n,m= kills modem starting from n to m
>          -Kill_one n= kills nth modem
>          -Kill_all = kills all the launched modem
>          -Start_one n= restarts nth modem
> Listening for incoming HTTP requests on port 8181
> [Loaded java.lang.ClassFormatError from /usr/local/j2sdk1.4.1_07/jre/lib/rt.jar]
> java.lang.NoClassDefFoundError: org/apache/commons/httpclient/HttpClient
> [Loaded java.lang.StackTraceElement from /usr/local/j2sdk1.4.1_07/jre/lib/rt.jar]
>         at java.lang.ClassLoader.defineClass0(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
>         at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
>         at java.net.URLClassLoader.defineClass(URLClassLoader.java:250)
>         at java.net.URLClassLoader.access$100(URLClassLoader.java:54)
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:193)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
>         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:272)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
>         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
>         at com.supportsoft.acs.modemsimulator.worker.do_the_real_work(worker.java:49)
>         at com.supportsoft.acs.modemsimulator.worker.run(worker.java:479)
>         at java.lang.Thread.run(Thread.java:536)
> 
> 
> Appears to be an issue with commons-httpclient-2.0.jar.  I'm not sure if the presence
of the ClassFormatError indicates that it is corrupt, but that seems unlikely as I have tried
copying the same file from other areas on aluminum.  I've also tried playing with the classpath-ordering
of the jar file, to no avail.  Debugging it from the command-line hasn't turned up anything
useful either.  Help, I'm running out of ideas!
> 
> P.S. - I AM using the same java version between Windows and UNIX  (1.4.1_07), so that
shouldn't be an issue.
> 
> --
> Brad Barkhouse
> Senior Software Engineer
> SupportSoft Canada Inc.
> brad.barkhouse@supportsoft.com
> http://www.supportsoft.com
> v. (902) 481-5750 ext. 2146
> f. (902) 481-5799
> 
> 
>

[db commons] component proposal

2005-02-02T01:16:59Z

Hi folks, I dono if you are open for this idea or if this topic was already
discussed but let me explain:

I�m working on a project where I decide to use the "pattern" Data Transfer
Rowset (a fast lane reader) given by Marinescu on book EJB Design Patterns.
When I decided this (four months ago) I do some research and look for some
open source implementations but the only implementation I found was the sun
CachedRowset implementation (with SCSL license and, for java 1.4.2, the
sources is unavailable).

The version done by sun was done for use with java 1.4.2 (and I was using
WAS 4, with java 1.3.1!!!)
I faced many problems with this (and my envinronment) and, yet now, does not
exist a CachedRowset implementation ...

Months ago, when sun releases tiger, I try to see the sources looking for
the CachedRowsetImpl but this source is not given yet (and, as I see, never
will).

I know there is another implementation, but is not open source too (is from
oracle, with huge bugs).

Once this component is the base of any good db solution I think this is the
right place to a component like this. I'm right?
I have some work done in this direction and wanna knows if can I help (with
hands on).

Tks

Woody

[fileupload] Re: Feature request. Multiple file upload.

2004-09-01T16:26:07Z

I think you're looking for commmons-dev@jakarta.apache.org, which I've 
cc'ed.

- Rod

On Wed, 1 Sep 2004 David.Pawson@rnib.org.uk wrote:

> I've been asking on commons-user about how to upload
> multiple files at once, and I'm told this is not
> a feature of fileUpLoad.
>
> The classic interface would be a file chooser,
> shift select for a group, control select for n individuals,
> then ftp to the server.
>
> This is not provided by HTML, and is a mess in javascript.
> If the number of files is not known in advance it gets
> really messy.
>
>
> Regards DaveP.
>
> **** snip here *****
>
> -- 
> DISCLAIMER:
>
> NOTICE: The information contained in this email and any attachments is
> confidential and may be privileged. If you are not the intended
> recipient you should not use, disclose, distribute or copy any of the
> content of it or of any attachment; you are requested to notify the
> sender immediately of your receipt of the email and then to delete it
> and any attachments from your system.
>
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> its staff are free from viruses or other contaminants. However, it
> cannot accept any responsibility for any  such which are transmitted.
> We therefore recommend you scan all attachments.
>
> Please note that the statements and views expressed in this email and
> any attachments are those of the author and do not necessarily represent
> those of RNIB.
>
> RNIB Registered Charity Number: 226227
>
> Website: http://www.rnib.org.uk
>

Feature request. Multiple file upload.

2004-09-01T06:55:39Z

I've been asking on commons-user about how to upload
multiple files at once, and I'm told this is not 
a feature of fileUpLoad.

The classic interface would be a file chooser,
shift select for a group, control select for n individuals,
then ftp to the server.

This is not provided by HTML, and is a mess in javascript.
If the number of files is not known in advance it gets
really messy.


Regards DaveP.

**** snip here *****

-- 
DISCLAIMER: 

NOTICE: The information contained in this email and any attachments is 
confidential and may be privileged. If you are not the intended 
recipient you should not use, disclose, distribute or copy any of the 
content of it or of any attachment; you are requested to notify the 
sender immediately of your receipt of the email and then to delete it 
and any attachments from your system. 

RNIB endeavours to ensure that emails and any attachments generated by 
its staff are free from viruses or other contaminants. However, it 
cannot accept any responsibility for any  such which are transmitted.
We therefore recommend you scan all attachments. 

Please note that the statements and views expressed in this email and 
any attachments are those of the author and do not necessarily represent 
those of RNIB. 

RNIB Registered Charity Number: 226227 

Website: http://www.rnib.org.uk

Re [15]:

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Moderator volunteers?

2004-03-01T10:58:46Z

Obviously there is more spam than not on this list.  Does someone want 
to volunteer to be moderator of the db commons-dev and commons-user lists?

I don't really want to do it as I don't have much to do with with db 
commons at present.

If you could let me know off list (I am not even subscribed) that you 
are interested, I can organise it with the powers that be.

Thanks,

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-- 
Scott Eade
Backstage Technologies Pty. Ltd.
http://www.backstagetech.com.au

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2004-02-29T11:42:07Z

Can someone please apply the patch below and update the commons-dev site.

BTW: The db commons wiki (which is empty anyway) has been migrated 
across to the new MoinMoin based wiki: http://wiki.apache.org/db-commons/

Cheers,

Scott

-- 
Scott Eade
Backstage Technologies Pty. Ltd.
http://www.backstagetech.com.au


Index: project.xml
===================================================================
retrieving revision 1.1
diff -u -r1.1 project.xml
--- project.xml    10 Mar 2003 01:17:53 -0000    1.1
+++ project.xml    29 Feb 2004 11:37:28 -0000
@@ -39,13 +39,13 @@
       DB Commons User List
       commons-user-subscribe@db.apache.org
       commons-user-unsubscribe@db.apache.org
-      
http://archives.apache.org/eyebrowse/SummarizeList?listName=commons-user@db.apache.org
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of waste such as: Municipal, agricultural, forestry, industrial, medical, 
as well as sewage sludge, and the huge market of used tires are all 
converted in the Biosphere Process. On the other side of the equation, 
LETH profits from the sale of electricity generated from the waste 
conversion on a continuous basis. 

LETH is an alliance partner with Tetra Tech, Inc. (NASDAQ: TTEK, 
$22) a leader and one of the largest providers in environmental, 
mechanical, and electrical management consulting services with annual 
sales of $800 Million. Tetra Tech will coordinate permitting, 
installation and continuous worldwide monitoring of the Biosphere 
Process System for LETH. Tetra Tech is now in the process of 
obtaining Department of Environmental Quality permitting for the 
Biosphere Process in the state of Louisiana. This is a monumental event 
for LETH which opens the floodgates for major project revenues in 
Louisiana while having a parallel effect on LETH stock in the form of a 
huge near-term announcement. 

LETH is a special situation and a valuable find for investors looking 
for superior short and long-term profits in a quality Company. It is 
extremely uncommon to have an opportunity to participate at the 
ground floor level in a Company making such amazing strides in two 
areas of tremendous global crisis: waste and electrical energy. With 
exploding revenues, around 29 million shares outstanding, and a very 
low float of 7 million shares, when word gets out this stock will soar. 
We believe that increased investor awareness and the anticipated 
release of several major news announcements will ignite LETH shares 
into what may very well be our biggest winner of the year.

Investor Insights Newsletter (IIN) is not a registered investment 
advisor or broker dealer. Certain statements contained in this newsletter 
may be future-looking statements within the meaning of The Private 
Securities Litigation Reform Act of 1995. Such terms as "expect", 
"believe", "may", "will", and "intend" or similar terms may identify 
these statements. Past performance is not an indicator of future results.  
This is not an offer to buy or sell securities. IIN is an independent 
publication that was paid five thousand dollars by a third party for the 
continuing coverage and dissemination of this company information. 
Investors are advised to seek proper guidance from a financial advisor 
or a registered financial broker. Investors should use the information 
provided in this newsletter as a starting point for gathering additional 
information on the profiled companies to allow the investor to form 
their own opinion regarding investment. Investing in micro-cap 
securities is highly speculative and carries an extremely high degree of 
risk and may result in the loss of some or all of the investment.
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Investor Insights Newsletter features companies with revolutionary products and 
soaring revenues. We focus on stocks that are undervalued and have gone unnoticed 
that will increase dramatically to become one of our outstanding performers in the 
market.  

We recently highlighted UGHO at .15 with a target of .85. UGHO hit a high of 2.81 
in 14 days. We picked EENT at .18 setting our target at .60. It hit .88 in 8 days.
 
Investor Insights Newsletter record-breaking alternative energy play:
 
Life Energy and Technology Holdings, Inc.

OTCBB: LETH

Recommended Price---1.00

Results from latest 10-Q:

Working Capital--- 23.4 million vs. deficit

Total Assets--- 36.8 million vs. 16.8 million

10 day target--- 1.75

30 day target--- 3.20

Rating--- Extremely Undervalued

LETH's innovative, cutting-edge technology is destined to make a major impact on a 
global scale by utilizing their Biosphere Process System to safely, efficiently, and 
profitably convert waste materials into electrical energy. The Biosphere Process 
offers boundless and unlimited benefits by solving the global waste problem while a 
major push for generating electricity from alternative sources continues to be the hot 
topic due to shortages and massive power failures.

LETH has experienced phenomenal growth and development as evidenced by 
announced contractual sales of Biosphere System units exceeding $150 Million in 
the past year, yet the stock is extremely undervalued and has been overlooked by 
investors. Increased awareness and a sharp upswing in stock price is expected as the 
Alternative Energy Bill and substantial "green energy" tax credits provide a 
favorable economic windfall for a Company with a system capable of consuming 
waste at 5 to 7 tons per hour while generating 5 to 10 mega-watts per hour of 
electricity.

Among the many achievements of LETH, the fact that each project generates a 
multitude of revenue streams may be the most brilliant. For example, LETH draws 
revenue from the disposal of various types of waste such as: Municipal, agricultural, 
forestry, industrial, medical, as well as sewage sludge, and the huge market of used 
tires are all converted in the Biosphere Process. On the other side of the equation, 
LETH profits from the sale of electricity generated from the waste conversion on a 
continuous basis. 

LETH is an alliance partner with Tetra Tech, Inc. (NASDAQ: TTEK, $22) a leader 
and one of the largest providers in environmental, mechanical, and electrical 
management consulting services with annual sales of $800 Million. Tetra Tech will 
coordinate permitting, installation and continuous worldwide monitoring of the 
Biosphere Process System for LETH. Tetra Tech is now in the process of obtaining 
Department of Environmental Quality permitting for the Biosphere Process in the 
state of Louisiana. This is a monumental event for LETH which opens the 
floodgates for major project revenues in Louisiana while having a parallel effect on 
LETH stock in the form of a huge near-term announcement.

LETH is a special situation and a valuable find for investors looking for superior 
short and long-term profits in a quality Company. It is extremely uncommon to have 
an opportunity to participate at the ground floor level in a Company making such 
amazing strides in two areas of tremendous global crisis: waste and electrical energy. 
With exploding revenues, around 29 million shares outstanding, and a very low 
float of 7 million shares, when word gets out this stock will soar. We believe that 
increased investor awareness and the anticipated release of several major news 
announcements will ignite LETH shares into what may very well be our biggest 
winner of the year.

Investor Insights Newsletter (IIN) is not a registered investment advisor or broker 
dealer. Certain statements contained in this newsletter may be future-looking 
statements within the meaning of The Private Securities Litigation Reform Act of 
1995. Such terms as "expect", "believe", "may", "will", and "intend" or similar terms 
may identify these statements. Past performance is not an indicator of future results. 
This is not an offer to buy or sell securities. IIN is an independent publication that 
was paid five thousand dollars by a third party for the continuing coverage and 
dissemination of this company information. Investors are advised to seek proper 
guidance from a financial advisor or a registered financial broker. Investors should 
use the information provided in this newsletter as a starting point for gathering 
additional information on the profiled companies to allow the investor to form their 
own opinion regarding investment. Investing in micro-cap securities is highly 
speculative and carries an extremely high degree of risk and may result in the loss of 
some or all of the investment.

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Re: new project question

2004-02-14T16:21:38Z

I put an actualized version of the library online 
(http://www.oliver-heger.privat.t-online.de/retrieve.zip). There are a 
some more QueryPart classes and more unit tests.

There is also a new class QueryWrapper (not sure if the name fits) that 
deals with executing queries: an instance is initialized with a 
QueryPart object, and then for this a PreparedStatement can be created. 
This statement can then be executed (for execution itself I would like 
to use something like commons dbutils).

Oliver

Brian McCallister wrote:

> First glance over it is quite complete -- though I am having trouble 
> seeing the best ways to use it.
>
> A few questions --
>
> Why render query into the StringBuffer argument instead of returning 
> the query string directly as a String? Do you foresee a use case where 
> the StringBuffer will need to be modified before or after rendering? 
> This is particularly true as you (quite cleanly) abstract out the 
> ability to plug different systems sql quirks in.
>
> -Brian
>

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2004-02-11T19:43:09Z

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Re: new project question

2004-02-09T07:21:51Z

Thank you, Brian.

The StringBuffer approach is mostly used for performance reasons. 
Because a whole SQL statement will likely consist of a bunch of 
QueryPart objects I tried to avoid that each object would have to create 
a String in its render() method. The actual approach makes it possible 
that they all render in the same buffer.

I was also thinking about moving this StringBuffer into the 
RenderContext class to get rid off this parameter in many methods. But I 
am not sure about that.

Oliver

Brian McCallister schrieb:
> First glance over it is quite complete -- though I am having trouble 
> seeing the best ways to use it.
> 
> A few questions --
> 
> Why render query into the StringBuffer argument instead of returning the 
> query string directly as a String? Do you foresee a use case where the 
> StringBuffer will need to be modified before or after rendering? This is 
> particularly true as you (quite cleanly) abstract out the ability to 
> plug different systems sql quirks in.
> 
> -Brian
>

Re: new project question

2004-02-09T00:34:54Z

First glance over it is quite complete -- though I am having trouble 
seeing the best ways to use it.

A few questions --

Why render query into the StringBuffer argument instead of returning 
the query string directly as a String? Do you foresee a use case where 
the StringBuffer will need to be modified before or after rendering? 
This is particularly true as you (quite cleanly) abstract out the 
ability to plug different systems sql quirks in.

-Brian

On Feb 8, 2004, at 2:38 PM, Oliver Heger wrote:

> Hi,
>
> did anyone had a look at that code? I would really appreciate some 
> comments.
>
> Thanks.
> Oliver
>
> Oliver Heger wrote:
>
>> Brian,
>>
>> sorry for the delay. You can now find the actual code at the 
>> following URL:
>>
>>    http://www.oliver-heger.privat.t-online.de/retrieve.zip
>>
>> Some short words for explanation:
>>
>> Heart of the library is the Query class in the parts sub package. 
>> Together with the other part classes it can be used to construct 
>> SELECT statements. Some important parts are still missing, e.g. for 
>> ORDER BY clauses or for generating lists for the IN operator.
>>
>> In the retrieve package there are some classes and interfaces that 
>> represent database structures. They have two purposes:
>>
>> 1. They are used for the mapping facilities. It is possible to 
>> address tables and columns with logic names, which are then 
>> transformed into real database names.
>> 2. They provide information for automatic generation of join 
>> conditions. One use case for this library was a highly configurable 
>> application that allows its user to choose the fields of a table and 
>> its related tables that should be displayed. For instance imagine an 
>> application that reads a tasks table for displaying a todo list. It 
>> allows its users to define the view of their tasks. If a user only 
>> wants to see fields that are contained in the tasks table, the 
>> resulting SELECT statement will be quite simple. If he or she is also 
>> interested in the name and some other attributes of the user who has 
>> created the task, the user table has to be joined. The library is 
>> designed that it can automatically detect the involved tables and 
>> fetch the necessary information about the relations between them 
>> through the RelationProvider interface. With this information it can 
>> dynamically create a statement with a join if necessary; the calling 
>> application need not bother about that.
>>
>> Of course a couple of unit tests must be added, though the test for 
>> Query also tests many other classes. Now I am looking forward to your 
>> comments!
>>
>> Oliver
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