Custom domains and primary keys

hi to all;
I've in troubles, with custom domains and the fact that sometimes, they must be as primary keys.
Searching in this news i see that we have to code, equals() and hashcode() methods, trying it i've got better behaviors , but still in problems.
My domain is an String , in "show time" i need it masked and query time ( as in database it is stored without mask ) i need it without any mask;
findByKey method i never know when it will work and when it will not;
Could some one point me to a right solution ?
fowards thanks

Dan:
Yes. Provide the correct equals() and hash() is the most important thing you need to do. There are other things you need to think about if the domain is NOT a scalar domain (single value). But, BC4J assumes that the PK is a scalar value, so your custom domain should be a scalar value value ==> equals and hash are two thing you'd need.
Thanks.
Sung

Similar Messages

Usage of custom domains for primary keys

Hi,
I have a question regarding the possibility to use custom domains on primary key attributes: are there any special requirements/constraints in order to do this (like for example providing consistent equals() and hash() methods...)?
Thanks,
Dan

Dan:
Yes. Provide the correct equals() and hash() is the most important thing you need to do. There are other things you need to think about if the domain is NOT a scalar domain (single value). But, BC4J assumes that the PK is a scalar value, so your custom domain should be a scalar value value ==> equals and hash are two thing you'd need.
Thanks.
Sung

Difference between Unique key and Primary key(other than normal difference)

Hello,
1).Can any one tell me any other difference between Unique key and Primary key other than it having NULLs.
2). What is the difference the words 'DISTINCT' and 'UNIQUE' in a sql query.
Thanks in advance.

Hi
If you don't believe me than see the documentation in
OTN.
Ott Karesz
http://www.trendo-kft.hu
SQL> create table scott.tbl_clob
2 (sss CLOB)
3 /
Tabelle wurde angelegt.
SQL> insert into scott.tbl_clob values('wrwrwrw')
2 /
1 Zeile wurde erstellt.
SQL> insert into scott.tbl_clob values('wrwrwrw')
2 /
1 Zeile wurde erstellt.
SQL> select distinct sss from scott.tbl_clob
2 /
select distinct sss from scott.tbl_clob
FEHLER in Zeile 1:
ORA-00932: nicht übereinstimmende Datentypen
SQL> select unique sss from scott.tbl_clob
2 /
select unique sss from scott.tbl_clob
FEHLER in Zeile 1:
ORA-00932: nicht übereinstimmende Datentypen
SQL> select distinct to_char(sss) from scott.tbl_clob
2 /
TO_CHAR(SSS)
wrwrwrw
SQL> select unique to_char(sss) from scott.tbl_clob
2 /
TO_CHAR(SSS)
wrwrwrw
SQL>

Dynamic SQL Joining between tables and Primary keys being configured within master tables

Team , Thanks for your help in advance !
I'm looking out to code a dynamic SQL which should refer Master tables for table names and Primary keys and then Join for insertion into target tables .
EG:
INSERT INTO HUB.dbo.lp_order
SELECT *
FROM del.dbo.lp_order t1
where not exists ( select *
from hub.dbo.lp_order tw
where t1.order_id = t2.order_id )
SET @rows = @@ROWCOUNT
PRINT 'Table: lp_order; Inserted Records: '+ Cast(@rows AS VARCHAR)
-- Please note Databse names are going to remain the same but table names and join conditions on keys
-- should vary for each table(s) being configured in master tables
Sample of Master configuration tables with table info and PK Info :
Table Info
Table_info_ID   Table_Name
1       lp_order
7       lp__transition_record
Table_PK_Info
Table_PK_Info_ID   Table_info_ID   PK_Column_Name
2               1   order_id
8               7   transition_record_id
There can be more than one join condition for each table
Thanks you !
Rajkumar Yelugu

Hi Rajkumar,
It is glad to hear that you figured the question out by yourself.
There's a flaw with your while loop in your sample code, just in case you hadn't noticed that, please see below.
--In this case, it goes to infinite loop
DECLARE @T TABLE(ID INT)
INSERT INTO @T VALUES(1),(3),(2)
DECLARE @ID INT
SELECT @ID = MIN(ID) FROM @T
WHILE @ID IS NOT NULL
PRINT @ID
SELECT @ID =ID FROM @T WHERE ID > @ID
So a cursor would be the appropriate option in your case, please reference below.
DECLARE @Table_Info TABLE
Table_info_ID INT,
Table_Name VARCHAR(99)
INSERT INTO @Table_Info VALUES(1,'lp_order'),(7,'lp__transition_record');
DECLARE @Table_PK_Info TABLE
Table_PK_Info_ID INT,
Table_info_ID INT,
PK_Column_Name VARCHAR(99)
INSERT INTO @Table_PK_Info VALUES(2,1,'order_id'),(8,7,'transition_record_id'),(3,1,'order_id2')
DECLARE @SQL NVarchar(MAX),
@ID INT,
@Table_Name VARCHAR(20),
@whereCondition VARCHAR(99)
DECLARE cur_Tabel_Info CURSOR
FOR SELECT Table_info_ID,Table_Name FROM @Table_Info
OPEN cur_Tabel_Info
FETCH NEXT FROM cur_Tabel_Info
INTO @ID, @Table_Name
WHILE @@FETCH_STATUS = 0
BEGIN
SELECT @whereCondition =ISNULL(@whereCondition+' AND ','') +'t1.'+PK_Column_Name+'='+'t2.'+PK_Column_Name FROM @Table_PK_Info WHERE Table_info_ID=@ID
SET @SQL = 'INSERT INTO hub.dbo.'+@Table_Name+'
SELECT * FROM del.dbo.'+@Table_Name+' AS T1
WHERE NOT EXISTS (
SELECT *
FROM hub.dbo.'+@Table_Name+' AS T2
WHERE '+@whereCondition+')'
SELECT @SQL
--EXEC(@SQL)
SET @whereCondition = NULL
FETCH NEXT FROM cur_Tabel_Info
INTO @ID, @Table_Name
END
Supposing you had noticed and fixed the flaw, your answer sharing is always welcome.
If you have any question, feel free to let me know.
Eric Zhang
TechNet Community Support

Configuration fails to save a lot (related to custom domain and SSL)

Attempting to add a custom domain and then to apply an SSL certificate to that domain result in a lot of errors. The sequence of events that led to this screenshot http://cl.ly/image/2w1V2m0x3N0U were:
Add a custom domain (failed)
Attempt to add the same custom domain again (failed)
Attempt to add the same custom domain again (succeeded)
Attempt to assign an SSL certificate to that domain (failed)
I was performing similar actions on Monday with similar results...a lot of failures with some successes and no apparent reason for the failures and no different actions leading to the successes. On Monday I refreshed the page in the browser a lot, but it
didn't seem to help. During the above sequence, I didn't refresh the page.

We have been having the same issue with regards to custom SSL bindings and certs in our staging environment. No matter how I choose to enter the information or how many times I try, the save button is nonfunctional and navigating away from the page discards
my changes.

Unique and primary key

column with unique constraint + not null constraint = primary key! (to some extent) Is it correct?
I invite your ideas

http://www.techonthenet.com/oracle/unique.php
http://www.allapplabs.com/interview_questions/db_interview_questions.htm#q13
Difference between Unique key and Primary key(other than normal difference)

Table and Primary Key Case Sensitive in Automated Row Fetch

Why are the table and primary key fields case sensitive in the Automated Row Fetch process? I'm debugging an error in this process and I'm not sure what the case should be.

Russ - It's a defect of sorts. Use upper case in the process definition. I don't think these processes will work with tables or columns whose names are not known to the database as upper-case values, i.e., defined using double-quoted non-upper case.
Scott

CMP Entity Beans with custom finders an primary key class

Hi everybody.
I've got a Entity with a primary key class and a custom finder. I've defined
the finder into the xml file like iPlanet's documentation say, but, when I
try to run the aplication I get the following error:
Exception: SERVLET-run_failed: Failed in running template:
/PruebaGI/PruebaGI/pruebagi.jsp, java.lang.ClassCastException:
com.netscape.server.deployment.SessionBeanDescriptor
Exception Stack Trace:
java.lang.ClassCastException:
com.netscape.server.deployment.SessionBeanDescriptor
at
com.netscape.server.servlet.servletrunner.AppInfo.popWebAppDescriptor(Unknow
n Source)
at com.netscape.server.servlet.servletrunner.ServletInfo.service(Unknown
Source)
at com.netscape.server.servlet.servletrunner.ServletRunner.callJSP(Unknown
Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callJsp
Compiler(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callUri
(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callUri
RestrictOutput(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformRequestDispatcher.forward(U
nknown Source)
at com.netscape.server.servlet.jsp.JSPRunner.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
at com.netscape.server.servlet.servletrunner.ServletInfo.service(Unknown
Source)
at com.netscape.server.servlet.servletrunner.ServletRunner.execute(Unknown
Source)
at com.kivasoft.applogic.AppLogic.execute(Unknown Source)
at com.kivasoft.applogic.AppLogic.execute(Unknown Source)
at com.kivasoft.thread.ThreadBasic.run(Native Method)
at java.lang.Thread.run(Thread.java:479).
Could anybody help my? I need to resolve this question quickly.
Thx
..

Hi Juan,
Sounds like you've defined either a java.lang.String where it should have
said Java.util.Vector (or the other way around) in the part of the
deployment descriptor that defines your custom finder method parameter.
Regards,
Raymond
"Juan Jos� Ayuso" <[email protected]> wrote in message
news:[email protected]...
Hi everybody.
I've got a Entity with a primary key class and a custom finder. I'vedefined
the finder into the xml file like iPlanet's documentation say, but, when I
try to run the aplication I get the following error:
Exception: SERVLET-run_failed: Failed in running template:
/PruebaGI/PruebaGI/pruebagi.jsp, java.lang.ClassCastException:
com.netscape.server.deployment.SessionBeanDescriptor
Exception Stack Trace:
java.lang.ClassCastException:
com.netscape.server.deployment.SessionBeanDescriptor
at
com.netscape.server.servlet.servletrunner.AppInfo.popWebAppDescriptor(Unknow
n Source)
at com.netscape.server.servlet.servletrunner.ServletInfo.service(Unknown
Source)
atcom.netscape.server.servlet.servletrunner.ServletRunner.callJSP(Unknown
Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callJsp
Compiler(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callUri
(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callUri
RestrictOutput(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformRequestDispatcher.forward(U
nknown Source)
at com.netscape.server.servlet.jsp.JSPRunner.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
at com.netscape.server.servlet.servletrunner.ServletInfo.service(Unknown
Source)
atcom.netscape.server.servlet.servletrunner.ServletRunner.execute(Unknown
Source)
at com.kivasoft.applogic.AppLogic.execute(Unknown Source)
at com.kivasoft.applogic.AppLogic.execute(Unknown Source)
at com.kivasoft.thread.ThreadBasic.run(Native Method)
at java.lang.Thread.run(Thread.java:479).
Could anybody help my? I need to resolve this question quickly.
Thx

Update Key and Primary Key

Hi
When I am trying to define Update Key which is the other name for Alternate Key, then the primary key symbol (key) which is defined just beside my primary key column ( customer id) gets dissappeared and the new key symbol comes up besides the update key columns("marital status,salary and address")
Now why this happens and how to tackle.
In my project Customer id is a primary key which is responsible for insert of new records if not already presnt in the target table and the three other fields "marital status,salary and address" columns are responsible for update but these are not primary or composite keys.

Can anyone tell me the difference in terms of how oracle update mechanism work in both the case.Not sure what you're asking.
Have you done an explain plan for each statement?

Logical standby and Primary keys

Hi All,
Why primary keys are essential for creating logical standby database? I have created a logical standby database on testing basis without having primary keys on most of the tables and it's working fine. I have not event put my main DB in force logging mode.

I have not event put my main DB in force logging mode. This is because, redo log files or standby redo logfiles transforms into set of sql statements to update logical standby.
Have you done any DML operations with nologging options and do you notice any errors in the alert.log? I just curious to know.
But I wanted to know that, while system tablespace in hot backup mode,In the absence of both a primary key and a nonnull unique constraint/index, all columns of bounded size are logged as part of the UPDATE statement to identify the modified row. In other words, all columns except those with the following types are logged: LONG, LOB, LONG RAW, object type, and collections.
Jaffar

What is the diffrence between Row id and primary key ?

dear all
my question is about creating materialized views parameters (With Rowid and
With Primary kry)
my master table contains a primary key
and i created my materialized view as follow:
CREATE MATERIALIZED VIEW LV_BULLETIN_MV
TABLESPACE USERS
NOCACHE
LOGGING
NOCOMPRESS
NOPARALLEL
REFRESH FAST ON DEMAND
WITH PRIMARY KEY
AS
SELECT
BCODE ID, BTYPE BTYPE_ID,
BDATE THE_DATE,SYMBOL_CODE STOCK_CODE,
BHEAD DESC_E, BHEADARB DESC_A,
BMSG TEXT_E, BMSGARB TEXT_A,
BURL URL, BTIME THE_TIME
FROM BULLETIN@egid_sefit;
I need to know is there a diffrence between using (with row id) and (with primary key) on the performance of the query?

Hi again,
fast refreshing complex views based on rowids, according to the previous subject.
(You're example shows that) are not possible.
Complex remote (replication) snapshots cannot be based on Rowid too.
for 10.1
http://download-west.oracle.com/docs/cd/B14117_01/server.101/b10759/statements_6002.htm#sthref5054
for 10.2
http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_6002.htm#sthref6873
So I guess (didn't check it) that this applies ONLY to replication snapshots.
This is not documented clearly though (documentation bug ?!)
Documentation states that the following is generally not possible with Rowid MVIEWS:
Distinct or aggregate functions
GROUP BY or CONNECT BY clauses
Subqueries
Joins
Set operations
Rowid materialized views are not eligible for fast refresh after a master table reorganization until a complete refresh has been performed.
The main purpose of my statements was to try to give a few tips how to avoid common problems with this complex subject, like for example: being able to CREATE an MVIEW with fast refresh clause does not really guarantee that it will refresh fast in the long run (reorganisation, partition changes) if ROWID based, further the rowid mviews have limitations according to the documentation (no group by, no connect by, link see above) plus fast refresh means only to use filter columnns of the mview logs, plus for aggregates you need additional count (*) pseudo columns.
kind regards
Karsten

Problem with type conversion and primary key during row fetch

[Note, this error occurs in Oracle XE, APEX 2.1.0.00.39]
I have been having a problem with Automatic Row Fetch:
ORA-01460: unimplemented or unreasonable conversion requested
So in an effort to resolve this, I created a PL/SQL process with the query below and was able to isolate the same error. The problem seems to come from one of the primary keys being a "number" type (APP_ID). The error occurs on the line:
where u.app_id=:P5_APP_ID
I have tried the following variations on this line in an effort to resolve this, but all generate the same error:
1) where to_char(u.app_id) = :P5_APP_ID
2) where u.app_id = to_number(:P5_APP_ID)
3) where to_char(u.app_id) = to_char(:P5_APP_ID)
I've also tried the laternate syntax "&__." and "#__#", but these don't function in the Source field and show up as syntax errors.
Any suggestions are welcome.
begin
for r in (
select app_name, apptype, appcreator, appurl
from application_users u, application_info i
where u.app_id=:P5_APP_ID
and i.app_id=u.app_id
and u.username=:P5_USERNAME)
loop
begin
:P5_APP_NAME := r.app_name;
:P5_APPURL := r.appurl;
exception
when others then
raise_application_error(-20000,'In Loop Failure',true);
end;
end loop;
exception
when others then
raise_application_error(-20000,'Out of Loop Failure',true);
end;
Thanks in advance,
Barney

I found a prior post referencing a similar issue and it was solved by using the "v(__)" syntax. This did resolve my issue, however, I have a quick follow-on which I'm hoping someone can answer quickly...
Since the "v(__)" syntax won't work for the Automatic Row Fetch (at least to the best of my knowledge), I have to do a manual process. However, the manual query as shown above doesn't actually populate any of the form values through the bind variables. They all remain at their cached values from prior data entry on the form.
Is using the bind variables for assignment incorrect, or is there something that must be done to get the updates to show up in the form (ordering of processes, etc.).
My manual process is running in the Load: Before Header state so I would have expected it to update all of the fields.
Thanks in advance,
Barney

Null in Composite Primary Key and "Primary keys must not contain null"

Hello all.
I'm a newbie concerning to JPA/EJB3, but I was wondering if toplinks doesn't support composite primary keys with null in some field (something perfectly right in any RDBMS).
I used JDeveloper (I'm using Oracle 10g database and JDeveloper 10.1.3.2.) wizards to generate JPA classes and I checked out generated files (with annotations), so they should be right (by the way, other O-R mappings for my model are working right, but this one).
I'm getting the next error:
Exception Description: The primary key read from the row [DatabaseRecord(
     TSUBGRUPOSLDI.CD_GRUP => 01
     TSUBGRUPOSLDI.CD_SUBGRUP => null
     TSUBGRUPOSLDI.CG_POBL => 058
     TSUBGRUPOSLDI.CG_PROV => 28
     TSUBGRUPOSLDI.DSCR => Sanidad)] during the execution of the query was detected to be null. Primary keys must not contain null.
Compound primary key is (CD_GRUP, CD_SUBGRUP). No foreign keys, no joins (only a NamedQuery: "select o from ..."). It's the simplest case!
I checked out that everything runs ok if there's no "null" value in CD_SUBGRUP.
After some research (this and other forums) I'm beginning to believe that it's not supported, but not sure.
Am I doing sth wrong? If not, what is the reason to not support this? Will it be supported in the future?
Thanks in advance.

Null is a special value and in many databases is not comparable to another null value (hence the isNull operator) and may pose problems when used to uniquely identify an Entity. TopLink does not support null values within a composite PK. As the nullable column is most likely not designated as a PK within your database table (many databases do not allow this) I recommend updating the Entity PKs to match that of the database.
--Gordon

Diff b/w surragate keys and primary keys

Can any one of u pls explain the difference between primary key and surragate keys,pls explain me with simple example

Hi rajesh,
surrogate key: For every master data record, system create a SID (Surrogate ID). If that particular master data record is used in infocube, system store the SID corresponding to that master data in dimension table and the dimension id of the dimension table is stored in infocube Fact 'F' table.
Primary key: while creating a table we will select unique field and create as primary key..for eg empid acts as a unique key (primary key) for emp table. through this primary key we can identify the table to get the data from the table.
i hope this helps u.
regards
anil

Problems with database modelling and primary keys

Hi,
I use JDeveloper exclusively for data modelling and generating the sql to build my db.
Its good but i have found a bug that can be rather annoying:
If i change the primary key of a table, the change does not seem to register within the model. So when i try and create a foreign key relationship to another table, the type is of the old type (say i went from varchar2 to number).
The only way around this is to delete the table and create it again. This also causes problems because the db generation wizard will then refuse to open properly (because it does not know that a table has been deleted).
Is this a known issue?
Cheers
Rakesh

Is this forum meant for reporting bugs or not? This issue i have stated is repeatable and in the current version.
R

Custom domains and primary keys

Similar Messages

Maybe you are looking for