Create a Java Object with Dynamic Variables

Hi ,
I am constructing a web based system which stores personal information on people. I have created a Person class with all the obvoius variables, forename, surname, address etc.. My problem is that some clients wish to make use of some of the variables, some want other variables and as i meet others they wish to add in some new variables eg
Client 1 wishes to store; Forename, Surname and Address
Client 2 wishes to store Forename, AltForename, Surname, AltSurname and Address ( AltForename - this is an alternative Forename in this case the Irish translation of their English name)
Client 3 wishes to store Forename, Surname, Title, Address, Height, Weight, DOB, School, Occcupation.
Each of the clients above need to submit these in an online form with each form looking different due to the fields they have to enter and also with different validation rules.
At present i have a Person object handling all fields i can think of and different validation methods depending on the client, but there must be a better way of doing this as each time a new field is added by a new or existing client, i not only have to update the java and jsp but also the DB.
This is all web based and i wish to use the same code base and data source for all clients. I also wish it to be all web based. So in theory if a client asked to add in a "middle name" field to their form and make it mandatory, i could go to an admin page which lists all the possible input element types and select the "field type" then set validation rules on it.
All the web based and DB parts can be ignored - the main issue here is creating a Person class which can have any number of variables of varying types ( String, Int, etc)
Regards,
Cormac
Edited by: cormacodonnell on Jun 27, 2008 6:33 AM

cormacodonnell wrote:
Hi ,
I am constructing a web based system which stores personal information on people. I have created a Person class with all the obvoius variables, forename, surname, address etc.. My problem is that some clients wish to make use of some of the variables, some want other variables and as i meet others they wish to add in some new variables eg
Client 1 wishes to store; Forename, Surname and Address
Client 2 wishes to store Forename, AltForename, Surname, AltSurname and Address ( AltForename - this is an alternative Forename in this case the Irish translation of their English name)
Client 3 wishes to store Forename, Surname, Title, Address, Height, Weight, DOB, School, Occcupation.You could extend the Person class with 3 sub classes, but that might be overkill just to store personal info.
Each of the clients above need to submit these in an online form with each form looking different due to the fields they have to enter and also with different validation rules.
At present i have a Person object handling all fields i can think of and different validation methods depending on the client, That's probably how I'd do it if it's not too much trouble. But to be OO you should probably go the inheritence route.
but there must be a better way of doing this as each time a new field is added by a new or existing client, i not only have to update the java and jsp but also the DB. Welcome to software development. It's called "feature creep" or "scope creep". As soon as you get your code working right and deploy it and get ready to go on vacation, the customer always comes back with something else they "need" or "forgot". The app I'm building right now I've rewritten or changed 7 times in 3 months because nobody has a clue what they really need.

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    -- This procedure uses bulk dynamic SQL to perform the fetch and insert operations into the named
    -- collection. Two limitations are imposed by this procedure:
    --   1) The MD5 checksum for the member data will not be computed
    --   2) No column value in query p_query can exceed 2,000 bytes
    -- Arguments:
    --     p_collection_name   = Name of collection. Maximum length can be
    --                            255 bytes. Note that collection_names are case-insensitive,
    --                            as the collection name will be converted to upper case
    --     p_query             = Query to be executed which will populate the members of the
    --                            collection. If p_query is numeric, it is assumed to be
    --                            a DBMS_SQL cursor.
    -- example(s):
    --     l_query := 'select make, model, caliber from firearms';
    --     apex_collection.create_collection_from_query_b( p_collection_name => 'Firearm', p_query => l_query );
    p_collection_name in varchar2,
    p_query           in varchar2,
    p_names           in wwv_flow_global.vc_arr2,
    p_values          in wwv_flow_global.vc_arr2,
    p_max_row_count   in number default null)
    ;

VANJ wrote:
Apex 4.0.2
Per Joel Re: Collection with bind variable the apex_collection.create_collection_from_query_b supports queries containing bind variable references (:P1_X) but I am not sure how to use this feature, the documentation doesn't have an example, just the API signature for the overloaded version has changed.
If the query contains 2 bind variable references to session state (:P1_X and :P1_Y), can someone please show an example of what to pass in for the p_names and p_values parameters to the API?Not tried it, but guessing something like
apex_collection.create_collection_from_query_b(
    p_collection_name => 'foobar'
, p_query => 'select f.foo_id, b.bar_id, b.baz from foo f, bar b where f.foo_id = b.foo_id and f.x = to_number(:p1_x) and b.y = :p1_y'
, p_names => apex_util.string_to_table('p1_x:p1_y')
, p_values => apex_util.string_to_table(v('p1_x') || ':' || v('p1_y')))

Creating a COM object with CF9 32-bit on Windows Server 2008 R2 64-bit machine

I'm using a 32-bit version of CF9 and it's installed on a Windows Server 2008 R2 machine (64-bit). The problem I'm running into is that it won't allow me to create a COM object - it gives me the error, "no ntvinv in java.library.path null" when I try to run,
<cftry>
<cfobject type="COM" action="CONNECT" name="Engine" class="JRO.JetEngine">
<cfcatch type="Any">
<cfobject type="COM" action="CREATE" name="Engine" class="JRO.JetEngine">
</cfcatch>
</cftry>
Then when I run it a 2nd time, I get "An exception occurred when instantiating a COM object. The cause of this exception was that: java.lang.RuntimeException: Can not use native code: Initialisation failed."
Can you help me?

Replying for your patchset installation pre-req error:
Use below command:
./runInstaller -ignoreSysPrereqs
Review MOS note 763143.1 for more info.

Create a Java Object with Dynamic Variables

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