等待在QLineEdit :: onTextChanged中输入的最后一个字符

I am working on a Point of Sale application, I have a function that takes the text from a QLineEdit (the product's bar code) and runs a query looking for the product to be displayed. The problem is I am running a query every time the text changes, that is, every time a new character is typed. Is there a way to wait for the user to stop typing and then run the query? I will be using a handheld scanner so it would be like 100ms between each character being typed.I am working on a Point of Sale application, I