How to implement auto increment in jpa

Hi all
how can we indicate that the strategy for primary key generation in auto increment?( the database is mysql5)
thanks for help

Hi Rachid,
Have a look at this...
http://www.developerscrappad.com/408/java/java-ee/ejb3-jpa-3-ways-of-generating-primary-key-through-generatedvalue/
Cheers,
Vlad

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Best way to implement auto increment in JPA.

What is the best way to implement auto increment in JPA so that it will support all databases such as MySQL, MSSQL Server, Oracle etc. ? Or is there any way to set auto increment strategy in common place such as persistence.xml? Please help...

All JPA strategies require something (like a table or sequence object) be in the database, with table sequencing being the most portable, though EclipseLink does allow custom sequence stratgies where you could use something else, such as the UUID. Sequencing is described here described here http://wiki.eclipse.org/EclipseLink/Examples/JPA/PrimaryKey with a custom UUID example shown here http://wiki.eclipse.org/EclipseLink/Examples/JPA/CustomSequencing .

How to use auto-increment and search option for MS Access DB

Dear All,
I have configured our invoice in Adobe Livecycle and connected it to MS Acess 2007 as per http://forms.stefcameron.com/2006/09/18/connecting-a-form-to-a-database/.
All is working fine, I can insert, retrieve data from DB to invoice and vice versa.
Now I want few things to be implemented on our invoice.
When ever I open our invoice, it populate the first entry from DB, Is it possible to populate the last entry ?
Auto increment invoice number from MS Access DB every time we open our invoice after save.
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As far as I know there is not any auto increment data type in Oracle. Instead of this you should create a sequence and get the next value of the sequence while creating a row in your table.
CREATE SEQUENCE Test_Sequence ;
CREATE TABLE Test_Table ( Id NUMBER , Foo VARCHAR2(4) ) ;
ALTER TABLE Test_Table ADD CONSTRAINT Test_Table_PK_Id PRIMARY KEY ( Id ) ;
INSERT INTO Test_Table ( Id , Information ) VALUES ( Test_Sequence.NEXTVAL , 'FOO' ) ;

How to use "Auto increment" in temp table Oracle

Pleas tell me yaar,
In MS Sql for Auto increment i am using like this "seqid int identity" for temp table
t_seq_tbl table(seqid int identity,EVENT_SEQ_NO varchar(30))
In oracle how to use....

As far as I know there is not any auto increment data type in Oracle. Instead of this you should create a sequence and get the next value of the sequence while creating a row in your table.
CREATE SEQUENCE Test_Sequence ;
CREATE TABLE Test_Table ( Id NUMBER , Foo VARCHAR2(4) ) ;
ALTER TABLE Test_Table ADD CONSTRAINT Test_Table_PK_Id PRIMARY KEY ( Id ) ;
INSERT INTO Test_Table ( Id , Information ) VALUES ( Test_Sequence.NEXTVAL , 'FOO' ) ;

How to get auto-increment value after insert on ACCESS db?

When you insert a new record to a table with an auto-incrementing key, how do you find the value for the row you just inserted? This works differently with different databases. I know how it's done on ORACLE and mySql.
How does it work with ACCESS through ODBC? How about MSSQL?

I have discovered there's a LAST aggregate function which when I've tested it gets the just inserted auto-increment, but I'm not sure if it's reliable. You have to do:
SELECT LAST(index-field) FROM table
That ought to be faster than MAX, which I've noticed some people use. Persumable LAST will get the value from the last row in the table's natural order.
In fact an auto-increment field has no business filling in missing slots since the main point is a a foreign key in other tables and a foreign key pointing to a deleted table row ought to be invalidated, not point to some unrelated successor record.
I could use a separate table as a source of counters, of course, though that's one more call. In either case I'm worried about thread safety. In Oracle there are special sequence objects for this purpose which are incremented and read atomically. I'm not sure if the access driver transaction handling works adequately.
Perhaps the safest approach might be to use a separate sequencer table and Java sychronisation to serialise access to each row in the sequencer table (assuming all the access is from the same app).

How to implement Auto Suggest Widget

Hi there
I have a dynamic asp classic page, where the data come from an access db.
On this page, many documents (category and title ) are displayed for download.
I want to implement Auto Suggest Widget in order to find the document easier and to jump to it (href="#document_xy") directly for download.
I don't have a clue on how to implement the Auto Suggest Widget.
The ASP sample works with XML File.
http://labs.adobe.com/technologies/spry/samples/autosuggest/SuggestSample.html
All replies, hints, tutorials are highly appreciated.
kind regards
joey00x
I am using Win XP, Dreamweaver CS3

Hi,
thanks for trying to help.
I am sorry to ask again. I am not at all familiar with xml.
I have tried to modify the ASP script you've suggested, but I get strange XML error, which doesn't make sense to me.
I understand that with the script the server creates an XML File on the fly. First I have to connect to my access database, then I fill the records into a recordset object. And then the server loops through the RS and creates the xml file. Is that correct?
The error message I get, points to a complete different place in the code, to a javascript module, which is working perfectly without below code.
Any suggestions where the bug is?
Thanks for your time
kind regards
joey00x
Here the code that I am using:
<%
Dim objRS
Dim SQLxml
SQLxml = "Select category, subcategory, title from DocumentView"
Set objRS=Server.CreateObject("ADODB.Recordset")
objRS.Open SQLxml , objConn, 0, 1
' Send the headers
Response.ContentType = "text/xml"
Response.AddHeader "Pragma", "public"
Response.AddHeader "Cache-control", "private"
Response.AddHeader "Expires", "-1"
%>
<?xml version="1.0" encoding="utf-8"?>
<root>
<% While (NOT objRS.EOF) %>
    <row>
         <%
            For each field in objRS.Fields
            column = field.name
         %>
        <<%=column%>><![CDATA[<%=(objRS.Fields.Item(column).Value)%>]]></<%=column%>>
        <%
            Next
        %>
    </row>
    <%
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    Wend
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</root>
<%
objRS.Close()
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%>

How to use auto incremented tabe to create a CMP Entity Bean

hi,
I want create a CMP entitybean with an auto incremented table in
Oracel. So I need to know
- how to create a table with an auto-incremented field in oracel and
- how to change the create() method according to that.
I am using Sun studio enterprise for EJB developing.
kaushalya

For auto increment in Oracle you should use Sequence/Trigger combination.
And useful thread from EJB forum:
http://forum.java.sun.com/thread.jspa?forumID=13&threadID=478783

Hello, everyone, can anyone tell me how to implement auto cash?

hello everyone :
      who can tell me how to implement the business process of Auto Cash in Sap, could't thank you more.
      Best Regards.
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hello, frank.
could you please explain the "Auto Cash" scenario a little more? we might know it by another term.
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How to create auto increment value in my column using identity ?

hi Team,
I have an requirement where i create an auto increment value ,with my table column
Create table Temp(
DeptID int IDENTITY(1,1) PRIMARY KEY,
Name varchar(50),
Emailid nvarchar(50),
Phone varchar(50)
so this is my table structure ,Here my column name is
Deptid here i need to creat an autoincrement value with today's date like below
ex:STM0000120012015
STM0000221012015
STM0000322012015(Currentdate)
.......................................... like this
Here i need only one column like identity column with the given incremental order,not more than one column
so can u pls help me out any one.
Thanks!

Here the output came like this ,
1 STM0000120150121
2 STM0000220150121
3 STM0000320150121
4 STM0000420150121
5 STM0000520150121
6 STM0000620150121
7 STM0000720150121
8 STM0000820150121
9 STM0000920150121
10 STM00001020150121 --see this exceed length
and here i dnt need to increment that Stm000010,Here my output will come like this, idnt need to increment my charcter size
1 STM0000120150121
2 STM0000220150121
3 STM0000320150121
4 STM0000420150121
5 STM0000520150121
6 STM0000620150121
7 STM0000720150121
8 STM0000820150121
9 STM0000920150121
10 STM0001020150121
11 STM0001120150121
12 STM0001220150121
so here i dont need to increment my charcter length(16)
The length should be STM(3char)+00001(5Charcters)+CurrentDateFormat,
see the above suggested o/p
so can u pls help me out Dimant

How to Implement Auto tabbing feature in a table region???

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Sree

Sree,
check this if it helps ;
https://forums.oracle.com/thread/963732
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How to implement auto complete using swings?

Hi all ,
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Alex

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How to generate auto incremented ID using a user who has create,view permissions only

Hi
i am using the builtin ID
field to achieve generate sequence no in a list
every time a new item created in list
for this i used update list item action in workflow, its working fine but
i have a problem here user who login into sharepoint site and create a new list item
has only Create ,View Permissions only,
i created a Requesters permissions level with (Create,view ) rights only i did not added Edit Rights
because this user only create list items only he will not edit the list item.
adil

Hello adil,
If user is having "Add Items" rights then item ID should be created automatically and this is auto generate column in list.
Why you are using "update list item action"? Are you updating any other field?
If updating any other column value then add Impersonation steps in your code to update item.
http://sharepoint.stackexchange.com/questions/16232/impersonation-step-in-sharepoint-designer-2010
http://sharepointgroup.wordpress.com/2012/05/10/how-to-use-work-flow-to-change-list-item-permissions-by-sharepoint-designer-2010/
Hope it could help
Hemendra:Yesterday is just a memory,Tomorrow we may never see
Please remember to mark the replies as answers if they help and unmark them if they provide no help

How to generate auto increment id for sharepoint list item using calculated column?.

Dear all,
List Id will be auto generated in the format “TP_W1_SCO_00001”.(00001 Numbers will keep changing for the documents).
FOR EX:-
first listem ID :TP_W1_SCO_00001
sECOND listem ID :TP_W1_SCO_00002
Please tell me how to do it by using calculated column.
Regards
swapna
SWAPNA

In this solution you have to make two additional columns and one workflow.
step 1 :
create column ‘pID’ on the list of the type number.
Step 2:
Create on the list with SharePoint Designer a listworkflow
Set in the start option: ‘Start workflow automatically when an item is create’
In the workflow you set de column 'pID' with the value from 'ID' ( standard column)
Use for this the option: ‘Set field in current item’.
You need that because you can't use the column 'ID' in the formula in an calculated column
Step 3:
create column ‘IssueID’ on the list of the type calculated column.
Use the formula:
=""&"TP_W1_SCO_"&[pID]
/blog
twttr @esjord

How to use auto increment with "nchar" data type

Hello
I have a table that I want the value in one column to be generated automatically with "T-XXX" pattern which
"XXX" is a number. Can Microsoft SQL Server do that?

Hello,
Not directly.
You could use an integer column with "Identity" and then add a calculated column to generate the required pattern, like
'T' + convert(varchar, YourIntColumn)
Olaf Helper
[ Blog] [ Xing] [ MVP]

How could you auto-increment a number in a select

i have some select sentences that i think i could do in one line:
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0001)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0001 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0002)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0002 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0003)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0003 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0004)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0004 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0005)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0005 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0006)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0006 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0007)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0007 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0008)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0008 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0009)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0009 AND F_PAGADO IS NULL;
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = 0010)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = 0010 AND F_PAGADO IS NULL;
note that only the number changes. i would need it to go through EVERY row from table "RECIBO". please, some idea? thanks!
Edited by: user13475720 on 01-mar-2011 3:17

hi there
create s sequence
CREATE SEQUENCE scott.SEQ
START WITH 1
MAXVALUE 99
MINVALUE 1
NOCYCLE
NOCACHE
NOORDER;then put seq.nextval
in ur query
UPDATE RECIBO SET RECARGO = (SELECT FLOOR((SELECT MONTHS_BETWEEN (SYSDATE , (SELECT F_EMISION FROM RECIBO WHERE N_RECIBO = SEQ.NEXTVAL)) / 12 FROM DUAL)) FROM DUAL) WHERE N_RECIBO = SEQ.NEXTVAL AND F_PAGADO IS NULL;Regards
Hitesh

How to implement auto increment in jpa

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