Filtering while accessing object instances

[Krish]

Hi All,
I have a component that reads a file and returns the data as a an
array of objects. Now I want to add the capability of filtering on
this.

This means if an array of objects is returned I should be able to
specify
give me objects where name starts with "A" or something of that sort.

Without loopong through the instances returned can I some how do a
filtering? There is no DB involved hence we cannot have a query with a
where clause.

Any helps to this will be appretiated.

Kris

[sloan]

Re: Filtering while accessing object instances


If you go here:

http://sholliday.space s.live.com/Blog/cns!A68482B9628 A842A!140.entry

You can download the sample code.

Needed alterations:

1. Send the predicate/filter to the controller

private List<BusinessOb jects.Customer>
SerializeCustom ers(IDataReader dataReader, bool deep , CustomerFilter
filter )
{

}

and in that method, as each item is created (Customer), do a check to see if
there is a match... and then decided to add it or not to add it to the
CustomerCollect ion ( List<Customer).


...

Then replace with your custom business objects, and instead of using an
IDataReader, use your file based way of reading and creating objects.





"Krish" <balacr@gmail.c omwrote in message
news:1194265881 .656609.89340@z 9g2000hsf.googl egroups.com...

Hi All,
I have a component that reads a file and returns the data as a an
array of objects. Now I want to add the capability of filtering on
this.
>
This means if an array of objects is returned I should be able to
specify
give me objects where name starts with "A" or something of that sort.
>
Without loopong through the instances returned can I some how do a
filtering? There is no DB involved hence we cannot have a query with a
where clause.
>
Any helps to this will be appretiated.
>
Kris
>

[Krish]

Re: Filtering while accessing object instances

In my case it is not a Select string that I need to construct.
I need to filter object instances. So the logic is getting very
complicated when there is an OR condition involved.

[sloan]

Re: Filtering while accessing object instances

You're right. Or's don't play nice.

I guess you can send in a collection (or array) of CustomerFilter' s, and do
the whole..loop until true trick, else false.

..........



"Krish" <balacr@gmail.c omwrote in message
news:1194349985 .737872.313630@ k79g2000hse.goo glegroups.com.. .

In my case it is not a Select string that I need to construct.
I need to filter object instances. So the logic is getting very
complicated when there is an OR condition involved.
>