This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
// Returns an array of record numbers that match the specified
// criteria. Field n in the database file is described by
// criteria[n]. A null value in criteria[n] matches any field
// value. A non-null value in criteria[n] matches any field
// value that begins with criteria[n]. (For example, "Fred"
// matches "Fred" or "Freddy".)
public int  find(String  criteria) throws RecordNotFoundException;
1. in my implementation when the size of the "criteria" is > 0 then i return the record that match
for any criteria. Is this right ? Someone used regular expression in this method?
2. in this method the sun interface only throw RecordNotFoundException, but in my implementation i
have to read the data file, so may i have to throw an IOException too. Can add more exception for my method?
i have the same doubt about create, read, modify and delete methods...
For your first question, please take a look here. I think this will be helpful!
For your second question, it probably will be better to throw a RuntimeException in these cases. Unfortunatelly, you can't change the interface that was provided to you. So just throw the exceptions that are allowed.
Will Sport be the Libertadores champion this year?!?!?!
thanks for tip, about the exceptions i don't have doubts anymore. but the find method i'm a little confused. Because if i understand well, first i will do a search with the "OR" logic, and latter i'll filter in my gui. Am i right?