DevShed has posted the last installment of their series looking at the use of the Facade design pattern. This time, they're looking specifically at its use in handling file data for the items on the local file system.

I'm going to continue demonstrating the application of the facade pattern, this time by developing yet another illustrative application. It will take care of processing the contents of a selected data file in different ways.

They start from scratch with the development of the sample script - creating a simple class that implements the pattern, then modifying it to work as a string processor and finally pulling them together to read the data for a file and echo out the processed results.