Re: JDBC date insert -- JAVA400-L

I agree (again) that using strings is not ideal. Your guess is more or
less accurate. I'm using a set of classes for database access that does
not currently provide for SQL date objects.

Thanks,
Todd

"James Perkins"
<jrperkinsjr@gmai
l.com> To
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java400-l-bounces iSeries / AS400"
@midrange.com <java400-l@xxxxxxxxxxxx>
cc

2008-11-05 17:14 Subject
Re: JDBC date insert

Please respond to
Java Programming
on and around the
iSeries / AS400
<java400-l@midran
ge.com>

I think you might need to explain why your are restricted strings. Treating
everything as a string is not very OO and is hard to deal with when using
an
OO language.

My guess is that you are sending "insert into myfile (cmdate, cmtime)
values(cast('11/5/2008' as date),cast('4:02:04' as time))" as a string to
another class to execute the SQL statement?

If that's the case I would think using a Date object and the
SimpleDateFormat would give you what you need.

James R. Perkins

On Wed, Nov 5, 2008 at 1:38 PM, <TAllen@xxxxxxxxxxxx> wrote:

The issue I have is that I am restricted to using strings so I cannot use

Date type as in your example. See my last reply. I cannot use a
PreparedStatement sinc I am working with an existing set of classes.

Thanks,
Todd

"Joe Sam Shirah"
<joe_sam@bellsout
h.net> To
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2008-11-05 16:07

Subject

Re: JDBC date insert

Please respond to
Java Programming
on and around the
iSeries / AS400
<java400-l@midran
ge.com>

Hi Todd,

Well, Alan wants you to use an entirely separate piece of software

that

will only work on the AS/400. I don't know if you looked at the link I
sent, but to me, the pertinent part is "That will work on any database

with

a compliant driver." I will grant that valueOf() wants a specific

format,

but you aren't tied to anything the AS/400 or other platform has.

Second,

it's the standard Java API, no driver properties involved, and is a one
liner after any formatting. Trivial example of one way:

String sMyDate = "2010-01-31";
ps.setDate( java.sql.Date.valueOf( sMyDate ) );

If those arguments make sense to you, use it. If not, find a way that
does. You're certainly not going to hurt my feelings.

Joe Sam

Joe Sam Shirah - http://www.conceptgo.com
conceptGO - Consulting/Development/Outsourcing
Java Filter Forum: http://www.ibm.com/developerworks/java/
Just the JDBC FAQs: http://www.jguru.com/faq/JDBC
Going International? http://www.jguru.com/faq/I18N
Que Java400? http://www.jguru.com/faq/Java400

----- Original Message -----
From: <TAllen@xxxxxxxxxxxx>
To: "Java Programming on and around the iSeries / AS400"
<java400-l@xxxxxxxxxxxx>
Sent: Wednesday, November 05, 2008 2:42 PM
Subject: Re: JDBC date insert

I also agree. However, I am restricted to using strings right now. I
cannot use a date object. Also, I do not have access to the driver
properties.

Inserting a date in all different formats (e.g. 11/4/2008, 2008-11-4)
works
fine from the SQL green screen. All fail using JDBC. The JDBC insert
seems to want the date in perfect MM/DD/YYYY format with leading zeros,

as

is set for the system date format. It seems the only option is to

modify

the string to be in MM/DD/YYY format . I don't forsee the system date
format changing but I'd rather not tie myself to it. Is there another
way?

Thanks,
Todd

"Joe Sam Shirah"
<joe_sam@bellsout
h.net>

To

Sent by: "Java Programming on and around

the

java400-l-bounces iSeries / AS400"
@midrange.com <java400-l@xxxxxxxxxxxx>

2008-11-05 12:07

Subject

Re: JDBC date insert

Please respond to
Java Programming
on and around the
iSeries / AS400
<java400-l@midran
ge.com>

Hi Todd,

I agree with both Paul and James.

If you need to specify values other than the current date and time,

use

the valueOf() methods of java.sql.Date, java.sql.Time,

java.sql.Timestamp

with the values in standard escape syntax. That will work on any

database

with a compliant driver.

See:

http://www.jguru.com/faq/view.jsp?EID=422110

under " The second method..." for an example, and review the javadocs.

Joe Sam

Joe Sam Shirah - http://www.conceptgo.com
conceptGO - Consulting/Development/Outsourcing
Java Filter Forum: http://www.ibm.com/developerworks/java/
Just the JDBC FAQs: http://www.jguru.com/faq/JDBC
Going International? http://www.jguru.com/faq/I18N
Que Java400? http://www.jguru.com/faq/Java400

----- Original Message -----
From: <TAllen@xxxxxxxxxxxx>
To: "Java Programming on and around the iSeries / AS400"
<java400-l@xxxxxxxxxxxx>
Sent: Wednesday, November 05, 2008 11:42 AM
Subject: RE: JDBC date insert

It is a prepared statement but I was trying to keep the Java code

simple

by
dealing with only strings. It seems I'll need to do the conversion in

the

Java code rather than in the SQL statement.

Thanks,
Todd

"Clapham, Paul"
<pclapham@core-ma
rk.com>

To

Sent by: "Java Programming on and around

the

java400-l-bounces iSeries / AS400"
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cc

2008-11-05 11:25

Subject

RE: JDBC date insert

Please respond to
Java Programming
on and around the
iSeries / AS400
<java400-l@midran
ge.com>

Well, don't do it that way. Just use a PreparedStatement. It takes

care

of all those annoying details on your behalf.

java.util.Date date = // a date 11/5/2008 with time 4:02:04
PreparedStatement ps = conn.prepareStatement("insert into myfile
(cmdate, cmtime) values(?, ?)");
ps.setDate(1, new java.sql.Date(date.getTime()));
ps.setTime(2, new java.sql.Time(date.getTime()));
ps.executeUpdate();

PC2

-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx
[mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of

TAllen@xxxxxxxxxxxx

Sent: November 5, 2008 07:16
To: Java Programming on and around the iSeries / AS400
Subject: JDBC date insert

I am having trouble with a JDBC insert of a string into date or time
columns in a database table. The same command works fine from the SQL
green screen.
The insert statement fails with the "Data type mismatch" SQL

exception.

The odd thing is that this only fails when the date or time does not
have all leading zeros.
Date of 11/14/2008 - success
Date of 11/4/2008 - error
Time of 22:00:00 - success
Time of 4:00:00 - error

The insert statement looks like this:

insert into myfile (cmdate, cmtime) values(cast('11/5/2008' as date),
cast('4:02:04' as time))

Thanks,
Todd

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