Preferences.java

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package test.beans;

import java.io.Serializable;

import javax.enterprise.context.SessionScoped;
import javax.enterprise.inject.New;
import javax.enterprise.inject.Produces;

public class Preferences implements Serializable {

    private PaymentStrategyType paymentStrategy;

    @Produces
    @Preferred_CreatedProgrammatically
    //In this producer method, we are manually creating the
    //bean instance
    public PaymentStrategy getPaymentStrategy() {
        if (true)
            paymentStrategy = PaymentStrategyType.CREDIT_CARD;
        // set CREDIT_CARD as preferred always

        switch (paymentStrategy) {
        case CREDIT_CARD:
            return new CreditCardPaymentStrategy();
        case CHECK:
            return new ChequePaymentStrategy();
        case PAYPAL:
            return new PayPalPaymentStrategy();
        default:
            return null;
        }
    }

    @Produces
    @Preferred_CreatedViaInjection
    @SessionScoped
    // This class is SessionScoped, so if we inject CreditCardPaymentStrategy
    // (which is RequestScoped)
    // we would incorrectly be promoting a request scoped object to a
    // session-scoped object
    // so we use @New for CreditCardPaymentStrategy alone. The rest of the
    // payment
    // strategies are Dependent anyway as they are not scoped explicitly in
    // their
    // classes
    public PaymentStrategy getPaymentStrategy(
            @New CreditCardPaymentStrategy ccps, ChequePaymentStrategy cps,
            PayPalPaymentStrategy pps) {
        // set CREDIT_CARD as preferred always
        paymentStrategy = PaymentStrategyType.CREDIT_CARD;

        switch (paymentStrategy) {
        case CREDIT_CARD:
            return ccps;
        case CHECK:
            return cps;
        case PAYPAL:
            return pps;
        default:
            return null;
        }
    }

}