Core Location and UISearch bar

I would like to develop an iPhone application and I have a problem witch is:

1. a have a web services witch deliver for me the longitude an altitude of my objects.
2. a would like to use a search bar and a map, when I tape for example Paris, I woul开发者_运维技巧d like to see all my objects in the map.

Is this possible to do? If YES how I can proceed?

1. Store your objects from the webservice.
2. Search for a location.
3. Display the search location in the map.
4. To show annotations in the map with your objects, see how-do-i-determine-if-a-coordinate-is-in-the-currently-visible-map-region