BC4J with InterConnect ?

We have some J2ee project, that is based on BC4J technology.
This overall project have many application system, like HR,INV, Account,PUR...., if we want to adopt Oracle Integration product(InterConnect) for these application integration(A2A), which Adapter shall we to use ?
Do we need to customize the Adapter for our project specific ? If yes, where can I find the Adapter SDK to get detail information.

Hi Faraz,
Please repost your question in the JDeveloper discussion forum for a better response -JDeveloper and ADF
Sujatha
http://otn.oracle.com/sample_code/content.html

Similar Messages

How to use BC4J with JDeveloper 9i in a Team

Hello
I'm not sure if I'm to stupid, but to say the truth I didn't found the clue how to share a BC4J Application between several develeopers. Maybe someone can give me a hint.
That's my situation:
Our team is going to develop a web application using BC4J and BC4J-JSP, nothing special I think.
But my problem is, that BC4J and especially the wizards refer to a lot of different files. Even simple changes often result in multiple files being changed in different parts of the project.
Creating a view link between view objects in two packages for example changes the view objects in both packages. Also the project (.jpr) file or several "BC4J.xcfg" files are changed very often.
So it is not easy to find parts of code from which I can say they are owned by one developer and others which are owned by another. Most often, if you have to merge the work of different developers, you have to edit the BC4J-XML-Files using an external editor. Or did someone find a better way? Please tell me!
So, what is the best way to share code between developers?
Should I partition the application by packages?
- advantage:
it allows a fine partitioning
- disadvantages:
it has the great danger that BC4J makes changes in other packages which will be overseen when merging.
Should I create a projects for each developer and distribute code between the projects using libraries?
- advantage: no unseen changes will happen, as the libraries are readonly.
- disadvantages: no view links between view objects in different projects (Libraries) are possible! Also a lot of "load errors" can occure when updating a library, which have to be manually corrected in the dependent projects.
Are source code management systems a real help in this problem or do they just "manage" the problem? I already tried SCM and PVCS but was not very happy with the way of working. As JDeveloper is not "really easy" to use with theese tools.
So I would like to get any hints how other developers are dealing with this problem. Are you using BC4J with JDeveloper 9i in a team? Please tell me how do it and how you have partitioned your application.
Thanks in advance
Frank Brandstetter

Hi,
I'm not sure whether my answer is good enough for you, but it might help.
First of all, you have to use JDev 9.0.3, because 9.0.2 has big problems with associations/view links between objects in different projects.
Creating a view link between view objects in two packages for example changes the view objects in both packages. Also the project (.jpr) file or several "BC4J.xcfg" files are changed very often.This is not completely true in 9.0.3, as you may choose not to create an accessor in the imported object (and usually you don't need it neither!). As for bc4j.xcfg, there is a trick: define a "standard" database connection name to use all over your project! This will prevent modifying these files all the time!
Should I create a projects for each developer and distribute code between the projects using libraries?
- advantage: no unseen changes will happen, as the libraries are readonly.
- disadvantages: no view links between view objects in different projects (Libraries) are possible! Also a lot of "load errors" can occure when updating a library, which have to be manually corrected in the dependent projects.I would say, projects for each application component, which by chance will be managed by a single developer at a time.
As for the disadvantages, in 9.0.3 you are able to properly create associations and links using read-only objects. Hopefully, the release version will solve some generation inconsistencies...
Concerning the errors that occur when modifying a library, this might be balanced by the relative independence of the components... If you are able to develop following the dependency tree, you will not meet the problem very often.
Are source code management systems a real help in this problem or do they just "manage" the problem? I already tried SCM and PVCS but was not very happy with the way of working. As JDeveloper is not "really easy" to use with theese tools.Indeed, I do not have a SCMS really able to manage merges in the BC4J XML files... We rather try not to arrive there!
So I would like to get any hints how other developers are dealing with this problem. Are you using BC4J with JDeveloper 9i in a team? Please tell me how do it and how you have partitioned your application.I really hope that my hints will help.
Regards,
Adrian

HOWTO: Use BC4J With or Without DB Triggers

This HowTo describes how to use BC4J, database sequences and triggers
and what are the ramifications.
INTRODUCTION
BC4J has the ability to work with database sequences in order to obtain a
unique value when inserting records. BC4J also has the ability to
work either with a 'before insert' trigger which automatically creates
a new unique value for the primary key or without a trigger. When not using
a database trigger, BC4J also has the ability to obtain the sequence value
and set the primary key value.
Before discussing the ramifications of using one approach or the other, let's
show examples of how to use both approaches:
BC4J & sequences WITH a database trigger
and
BC4J & sequences WITHOUT a database trigger
HOWTO DEMONSTRATION STEPS
To illustrate both scenarios a simple database setup script is provided which
creates two tables:
CUSTOMER_NT which DOES NOT have a before insert trigger and
CUSTOMER_WT which DOES have a trigger.
Database Install Script:
<code>
drop trigger customer_insert_trigger;
drop table customer_wt;
drop table customer_nt;
drop sequence customer_wt_seq;
drop sequence customer_nt_seq;
create sequence customer_wt_seq start with 1;
create sequence customer_nt_seq start with 101;
create table customer_wt(
id number,
name varchar2(30),
constraint
customer_wt_pk
primary key (id)
create table customer_nt(
id number,
name varchar2(30),
constraint
customer_nt_pk
primary key (id)
prompt Inserting data...
insert into customer_wt (id, name)
values (customer_wt_seq.nextval, 'Mickey');
insert into customer_wt (id, name)
values (customer_wt_seq.nextval, 'Goofy');
insert into customer_nt (id, name)
values (customer_nt_seq.nextval, 'Daffy');
insert into customer_nt (id, name)
values (customer_nt_seq.nextval, 'Porky');
commit
prompt Creating trigger
create trigger customer_insert_trigger
before insert on customer_wt for each row
begin
select customer_wt_seq.nextval into :new.id from dual ;
end;
</code>
The next step is to create the DEFAULT Entity Objects and View Objects using
the Business Components Wizard.
USING BC4J WITH A DATABASE TRIGGER
Let's modify the entity object CustomerWt so it can use the database trigger.
Edit the entity object CustomerWt by right-clicking in the navigator.
Click on the 'Attribute Settings' tab and edit the ID attribute.
- Uncheck 'Mandatory'checkbox. This allows you to insert without a value for the primary key
- Check 'Refresh after Insert'. This obtains the value from the database generated by the trigger.
- Check 'Updateable While New'. Id is only updateable when inserting.
Click finish to complete the wizard. Save all and recompile the project.
Now let's test our work.
In the navigator right-click the application module and select 'Test..'. This will launch
BC4J's built in tester. Connect to the application.
In the tester double-click the CustomerWtView view object to run a test edit form.
After the edit form renders, navigate through the existing records using the navigate
buttons on the edit form. Now let's insert a record to execute the trigger.
click on the '+' button to insert a record. Enter a value in the 'Name' field and commit the change.
Observe that a new value has automatically been inserted into the Id field.
That's it! You have successfully used BC4J and a database trigger.
Now let's try it without a trigger..
USING BC4J WITHOUT A DATABASE TRIGGER
Now edit the entity object CustomerNT so it doesn't need a database trigger.
Similar to before, edit the entity object CustomerNt by right-clicking in the navigator.
Click on the 'Attribute Settings' tab and edit the ID attribute.
- Uncheck 'Mandatory'checkbox.
- Check 'Updateable While New'.
An additional step is also required. The Create method will have to be modified to extract
the value of the sequence.
In the Edit EntityObject Wizard click the Java tab and select Create method and click Finish.
The create method is generated in your Java fil e. In the Workspace view of the Navigator,
expand the CustomerNt entity object in the navigator. Double-click
CustomerNtImpl.java to open it in the Source Editor. In the Structure pane, double-click
create(AttributeList). Modify the Create method so it looks like this:
<code>
public void create(AttributeList attributeList) {
super.create(attributeList);
SequenceImpl s = new SequenceImpl("customer_nt_seq", getDBTransaction());
Integer next = (Integer)s.getData();
setId(new Number(next.intValue())); }
</code>
Save and compile the project.
Now test the ViewObject CustomerNtView using the tester as before.
In the edit form of CustomerNTView click on the '+' to insert a record. Observe that
just as before a new value has automatically been inserted in the ID field!
TO USE A DB TRIGGER OR NOT TO USE A DB TRIGGER.
Using a Database trigger sometimes preferable if you have non BC4J applications
also sharing the database. In this case it is still safest to just let the database
update it's own primary keys.
If you don't have any other non-BC4J applications sharing the database, then not using
a database trigger is perfectly acceptable and can have slightly better performance.
The important thing to remember is that the option is yours to use either approach!
null

Thank you for the reply Jonathon. I am using a ViewObject which
consist of several tables. I haven't tried the DB trigger
approach but just using the BC4 approach in overriding the
create method.
Here is the parent class create as a part of the
FasNameImpl.java file which does the job correctly.
public void create(AttributeList attributeList) {
super.create(attributeList);
SequenceImpl l_seq = new SequenceImpl
("SEQ_CUSTOMER_ID",getDBTransaction());
Integer l_next = (Integer)l_seq.getData();
setCustomerId(new Number(l_next.intValue()));
This is when I triedpassing the value to the child table. But I
can't figure it out. I think the link is working fine if I had a
ViewLink deployed but it doesn't look like it's doing the job
for ViewObject.
I am trying to call the childclass.method
(FasCustomer.setCustomerId(l_next);
But I am getting error.
Thanks a lot for your suggestions,
Kamran
703 696 1121

BC4J with Jdeveloper 10.1.3.1.0

Hi,
I am new to jdeveloper. Can I use BC4J with this version ? I am looking for some sample code where it shows how to call my own Packages from a from and how to control my own transaction. Can anyone point me to some good samples ?
Thanks
Naresh

ADF BC in 10.1.3 is the newest version of BC4J.
You can find a complete developer guide for working with ADF BC as well as a tutorial here:
http://www.oracle.com/technology/products/adf/learnadf.html
(the left side of the page).

Using BC4J with MS Access/MySQL

Hi,
I have to develop a small application for PC consisting of somes input forms and a data report (for screen & printer). I'm new to the BC4J framework and I don't have any experiencie with it.
I will work with one of this DB: MS Access or MySQL (SQL 92 compliant).
Before beginning my work I would want to know if somebody has any experience on using the framework with one of these databases. If so, does the framework work well with these databases? Is there some known problem or limitation? Has anybody some remendation on this matter?
Thank you so much.
M Laura.

Although we don't formally test with MySQL,
we have an inhouse project that uses
BC4J with MySQL - it works well.
The only way into Access is via the JDBC:ODBC bridge,
which I've always found troublesome.
regards, Karl McHorton (bc4j development)

BC4J with Struts using EditAction's create method.

Hi,
I am using BC4J with struts and using the EditAction and UpdateAction classes provided by BC4J.
When i want to create a new row in the database the documentation asks me to call EditAction's create() method and then UpdateAction's execute() method to do it. But even when i just call UpdateAction's execute() method I am able to create a new row. So WHY should I call EditAction's create() method ?????

EditAction's create() method is something you would call in the action before rendering the empty form for the user to fill in.
It creates a row, and then marks the row as having STATUS_INITIALIZED using the Row.setNewRowState(Row.STATUS_INITIALIZED) call.
By setting the row to STATUS_INITIALIZED, this makes BC4J "forget" that it's a new row that needs to be inserted. In effect, it makes that new row a throwaway row used only for the purpose of rendering the blank form. An important reason you would want to do things this way is to pickup entity-level default values in the attributes of the new row.
For example, in the toy store demo, why is it that when you register as a new user the "Country" poplist defaults to "United States" ? (it's not the first entry in the list).
The answer is that, since the EditAction (or in this case my custom subclass of that) creates the blank row, the fact that the "toystore.model.businessobjects.Account" entity object declares that its Country attribute has a default value of "US" makes the blank row created in the "toystore.model.dataaccess.Accounts" view object have a default value of "US", and that default value in the blank row causes the <jbo:InputSelect> tag that renders the poplist to mark the corresponding "United States" option in the list as currently selected (as it's the display string associated in the poplist with the value "US").

BC4J with non-SQL datasource

Hi
Is it possible to use BC4J with non-SQL, non-relational datasources? For example, we are exploring the possibility of using a file-based XML datastore (NOT the XDB) as the back-end for some ADF screens.
Thanks,
Sean

BC4J is designed for SQL databases.
http://www.oracle.com/technology/products/jdev/collateral/tutorials/903/j2ee_bc4j/prnt/j2ee_bc4j.html#bc4j-faq

JSP using BC4J with MS SQL Server

I use JDevelop to develop my JSP apps with BC4J. When I Run a JSP app, the error happened.
The error message is [Microsoft][SQLServer 2000 Driver for JDBC]Can't start a cloned connection while in manual transaction mode.
Who can tell me what the error message means? Or What error might happened to my code?
What parameter I should setup? Or What code I should change?

There is a "how to" that addresses this issue
with SQL*Server:
http://otn.oracle.com/products/jdev/howtos/bc4j/bc_psqlserverwalkthrough.html
You need to qualify your jdbc URL: (this is from the howto)
On the Connection page, enter the Java class name and the URL.
Java class name: com.microsoft.jdbc.sqlserver.SQLServerDriver
URL: jdbc:microsoft:sqlserver://<db-host>:1433;SelectMethod=cursor
Note: There's a semicolon before SelectMethod=cursor.
Note on Select Method: From the MS SQL Server documentation: SelectMethod={cursor | direct} determines whether or not Microsoft SQL Server "server cursors" are used for SQL queries. Setting SelectMethod to direct allows SQL statements to be executed without incurring server-side overhead for managing a database cursor over the SQL statement. Direct mode is the most efficient for executing Select statements; however, applications are limited to a single active statement while executing inside a transaction. If multiple result sets are required from a single query execution, then the application must set SelectMethod to direct.
regards, Karl

RAC connection problem with interconnect NIC failure

We have an 11g 2-node test RAC setup on RHEL 4 that is configured to have no load balancing (client or server), with Node2 existing as a failover node only. Connection and vip failover works fine in most situations (public interface fail, node fail, cable pull, node 2 interconnect fail, interconnect switch fail etc etc).
When the node1 interconnect card failure is emulated (ifdown eth1):
node2 gets evicted and reboots
failover of existing connections occurs
VIP from node2 is relocated to node1
However new connection attempts from clients and the server receive a ORA-12541: TNS:no listener message.
The basis of this is the issue that in the event of an interconnect failure, the lowest number node is supposed to survive - it looks like this includes the situation where the lowest number node has a failed interconnect NIC; ie it has a hardware fault.
I checked this with Oracle via an iTAR quite some time ago (under 10g) and they eventually confirmed that this eviction of the healthy 2nd node is correct behaviour. In 10g, this situation would result in the remaining instance failing due to the unavailable NIC, however I did not get the chance to fully test and resolve this with Oracle.
In 11g, the alert log continuously reports the NIC's unavailability. The instance remains up, but new connections cannot be established. If the NIC is re-enabled then new connections are able to be established. At all times, srvctl status nodeapps on the surviving node and lsnrtcl show that the listener is functional.
The alert log reports the following, regarding a failed W000 or M000 process:
ospid 13165: network interface with IP address 192.168.1.1 no longer operational
requested interface 19.2.168.1.1 not found. Check output from ifconfig command
ORA-603 : opidrv aborting process W000 ospid (16474_2083223480)
Process W000 died, see its trace file
The W000 trace file refers to an Invalid IP Address 192.168.1.1 (the interconnect ip address) obviously the source of the process dying.
Finally, if I restart the remaining instance via srvctl stop/start instance with the NIC still unavailable, the instance will allow new connections and does not report the failures of the W000/M000 process or appear to care about the failed NIC.
Before I go down the iTAR path or start posting details of the configuration, has anyone else experienced/resolved this, or can anyone else test it out?
Thanks for any input,
Gavin
Listener.ora is:
SID_LIST_LISTENER_NODE1=
(SID_LIST=
(SID_DESC=
(ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1)
(SID_NAME=RAC_INST)
(SID_DESC=
(ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1)
(SID_NAME=RAC_INST1)
(SID_DESC=
(ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1)
(SID_NAME=RAC_INST2)
SID_LIST_LISTENER_NODE2=
(SID_LIST=
(SID_DESC=
(ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1)
(SID_NAME=RAC_INST)
(SID_DESC=
(ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1)
(SID_NAME=RAC_INST2)
(SID_DESC=
(ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1)
(SID_NAME=RAC_INST1)
LISTENER_NODE1 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL=TCP)(HOST=vip-NODE1)(PORT=1521)(IP=FIRST))
(ADDRESS = (PROTOCOL=TCP)(HOST=NODE1)(PORT=1521)(IP=FIRST))
LISTENER_NODE2 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL=TCP)(HOST=vip-NODE2)(PORT=1521)(IP=FIRST))
(ADDRESS = (PROTOCOL=TCP)(HOST=NODE2)(PORT=1521)(IP=FIRST))
)

Thanks for your reply.
There is no NIC bonding - the interconnect is a single, dedicated Gigabit link connected via a dedicated switch: plenty of bandwidth.
I know that providing interconnect NIC redundancy would provide a fallback position on this (although how far do you go: redundant interconnect switches as well?), and that remains an option.
However that's not the point. RAC does not require a redundant interconnect - as a high-availability solution it should inherently provide a failover position that continues to provide an available instance, as it does for all other component failures.
Unless I've made a mistake in the configuration (which is very possible, but all the other successful failover scenarios suggest I haven't), then this could be a scenario that renders a 2-node cluster unavailable to new connections.
Gavin

Building Small Network with Interconnected 2960Xs - No Connectivity

I am trying to create a network with a client connected to a 2960X, which connects to a second 2960X switch, which connects to a server. I have setup the switch connected to the client with an IP address of 10.0.1.1 for its vlan1. The second switch has an IP address of 10.0.2.1 set for its vlan1. I then interconnected the two switches using the GigabitEthernet1/0/1 interface in trunking mode on each switch. I was not able to ping the second switch, so I then configured the GigabitEthernet1/0/2 interface in access mode and connected the two switches. I am still not able to ping the second switch from either side.
What do I need to do to get this setup working? Should I be using a single VLAN that spans the two switches? Should I be using trunking or access mode for the interface that interconnects the two switches?

That is correct, each switch has only one vlan, vlan1.
Subnet mask is 255.255.255.0.
Thanks, will change all interswitch connections to trunk. Will leave all host to switch connections at access.
Unfortunately, I cannot post the output as it is from a terminal that cannot be connected to the Internet or even the Intranet and USB storage is not permitted in the area, so I cannot copy the output into a text file on a USB drive. I would have to type everything out. If there are parts of the sections of these commands that may be show the issue, please let me know and I can type up those sections.
vlan interfaces are both up.

BC4J with Tomcat

Hello People,
I am trying to deploy a simple application with Oracle BC4J (created with the JDeveloper wizards) in Tomcat. I am using JDK 1.4.1, Win2k and Tomcat 4.1.24 and Tomcat 5.02.
I had followed all steps that are on this page:
http://download-west.oracle.com/otn_hosted_doc/jdeveloper/904preview/packaging_deploying/dep_p_gwebappstomcat.html
But I get 2 problems:
In tomcat 4.1.24 the error message is:
Error Message: Only one of the two parameters target or targetParam should be defined.
And in Tomcat 5.02 the error message is:
Error Message: Unable to compile class for JSP
Any help will be welcome.
[]s
Pablo

Again: Anyone?
Hello People,
I am trying to deploy a simple application with Oracle
BC4J (created with the JDeveloper wizards) in Tomcat.
I am using JDK 1.4.1, Win2k and Tomcat 4.1.24 and
Tomcat 5.02.
I had followed all steps that are on this page:
http://download-west.oracle.com/otn_hosted_doc/jdevelop
r/904preview/packaging_deploying/dep_p_gwebappstomcat.h
ml
But I get 2 problems:
In tomcat 4.1.24 the error message is:
Error Message: Only one of the two parameters target
or targetParam should be defined.
And in Tomcat 5.02 the error message is:
Error Message: Unable to compile class for JSP
Any help will be welcome.
[]s
Pablo

BC4J with Double Byte

Is it possible that I can create BC4J to access a 8i with ISO8859-1 characterSet, and show double byte information
(ex:Chinese/Japaness) correctly in my applet? (ex:GridControl) So far I can only show Chinese correctly in my BC4J,
when the 8i with a ZH16BIG5 character Set.
Thanks for any idea. : )

The doubleToLongBits() method converts invalid values to NAN before converting

BC4J with Oracle9iAS R2

We developed a JSP application using BC4J and JDeveloper 3.2.
Can I deploy this application to Oracle9iAS R2 ?.... How ?
are the new BC4J classes complatible with the JDev3.2 classes ?
Does "J2EE and Web cache" installation type contain the BC4J classes ?
Thanks in advance.

Instead of running the startup script when booting your server, try running the steps one by one and see if you get any error messages. Or check the log files for errors.
9iAS is quite sensitive to a proper startup, but also a proper shutdown. If you had an abrupt shutdown due topower failure, you may have an instance in an incorrect state.
E.g I have the following in my startup.bat (on Windows):
oidmon start
timeout 10
echo .....Stopping previous Internet Directory Instance (if running)......
oidctl server=oidldapd configset=0 instance=1 stop
timeout 20
The extra 'oidctl stop' command is to stop an OID instance if one was running due to an incorrect shutdown.

BC4J with other API using JClient

hi
i like to know whether new APIs can be binded with BC4J componets or not. now i am using JClient and its API to bind with BC4j components. but i like to use new API in jclient to bind with BC4j componets. or bindind the new APIS directly in to BC4j components.is that possibe to do that.if posssible i like to know the procedures with small samples too.
advance thanks for every one`s suggestion
mallesh

hi andrew,
i want to make java application with bc4J components but not using JClient with bc4j components.
i have some APIs like JCTable from grapecity. i like to use this and retrive values from bc4j components or even using swing jtable(only) also fine but not by jclient. how should i proced further. if possible give me small samples too

The major difference between Oracle BC4J with WebSphere Business Components

Hi BC4J/ADF experties:
who could help to explian the difference betweenn IBM WebSphere Business Components(San Francisco) with Oracle BC4J(ADF) ? , the both product to emphasize Component-based developemnt but WebSphere Business Components have been define some enterprise base component that can provide extend and customize. how do you look up on this product strategy for developer ?

I guess one difference is who can use it, for IBM components:
Available for ISVs and Technology Partners only, and requires that the ISVs and Technology Partners have either a SanFrancisco Technology License Agreement, SanFrancisco Version 2 Development License or a SanFrancisco Version 2.1 OEM agreement and an appropriate transaction document executed under the respective base agreement.
BC4J is for use by anybody who uses JDeveloper.
IBM's solution seems to lock you into using Webssphere, with BC4J you can use whichever application server you want.
I guess the problem is to find someone "who could help to explian IBM WebSphere Business Components" - I can't seem to find a good expenation of what it does, but it seems to be a set of functional components that do specific tasks.
This is not what BC4J is about.
IBM's solution forces you to use EJB. BC4J gives you a choice of deployment options.
To understand what BC4J give you read:
http://otn.oracle.com/products/jdev/collateral/tutorials/903/j2ee_bc4j/prnt/j2ee_bc4j.html

BC4J with InterConnect ?

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