se.itu.systemet.storage

Interface ProductLine

All Known Implementing Classes:

FakeProductLine, SQLBasedProductLine

public interface ProductLine

Represents a ProductLine of beverages. This interface provides methods for accessing the products in the product line.

Method Summary

Modifier and Type	Method and Description
List<Product>	getAllProducts() Returns a list of all the products in the product line.
List<Product>	getProductsFilteredBy(Predicate<Product> predicate) Returns a List<Product> with all products of the product line that satisfies the predicate.

Method Detail

getProductsFilteredBy

List<Product> getProductsFilteredBy(Predicate<Product> predicate)

Returns a List<Product> with all products of the product line that satisfies the predicate.

Typical usage:

 ProductLine productLine = ProductLineFactory.getProductLine();
 List products = productLine.getAllProducts();
 List strongStuff = productLine.getProductsFilteredBy(p -> p.alcohol() > 70.0);
 

Which filters out all Products with an alcohol level over 70.0%

Parameters:

predicate - A Predicate with the criteria for the products to return

Returns:

A List<Product> with all the Products that match the predicate

getAllProducts

List<Product> getAllProducts()

Returns a list of all the products in the product line.

Returns:

A List<Product> with all the Products in the product line.