Java ToyProject upload by JoonheeJeong

src/me/smartstore/AppException.java

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+package me.smartstore;
+
+public class AppException extends Exception {
+    public AppException(String msg) { super(msg); }
+    public AppException(Exception e) { super(e); }
+    public AppException(String msg, Exception e) { super(msg, e); }
+}

src/me/smartstore/Main.java

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+package me.smartstore;
+
+public class Main {
+    public static void main(String[] args) {
+        SmartStoreApp.getInstance().test().run();
+//        SmartStoreApp.getInstance().run();
+    }
+}

src/me/smartstore/SmartStoreApp.java

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+package me.smartstore;
+
+import me.smartstore.customer.CustomerRepository;
+import me.smartstore.group.Group;
+import me.smartstore.group.GroupParameter;
+import me.smartstore.menu.Menu;
+import me.smartstore.menu.topic.StartMenu;
+
+public class SmartStoreApp {
+
+    private static final SmartStoreApp INSTANCE = new SmartStoreApp();
+    private SmartStoreApp() {}
+    public static SmartStoreApp getInstance() { return INSTANCE; }
+
+    public SmartStoreApp test() {
+        Integer[][] groupParameters = new Integer[][] {
+                        {10, 100_000},
+                        {20, 200_000},
+                        {30, 300_000}
+        };
+        CustomerRepository repository = CustomerRepository.getInstance();
+
+        Group[] groups = Group.getUsedGroups();
+        for (int i = 0; i < groups.length; i++) {
+            Group group = groups[i];
+            Integer[] param = groupParameters[i];
+            group.setGroupParameter(param);
+            for (int j = 0; j < 10; j++) {
+                repository.resetTempCustomer();
+
+                String id = String.format("%s_%02d", group.name(), j);
+                repository.setTempId(id);
+
+                String name = (char) ('a'+j) + "zzz";
+                repository.setTempName(name);
+
+                Integer spentHours = (int) (Math.random() * 10) + param[0];
+                repository.setTempSpentHours(spentHours);
+
+                Integer totalPaidAmount = (int) (Math.random() * 100_000) + param[1];
+                repository.setTempTotalPaidAmount(totalPaidAmount);
+
+                repository.updateGroupOfTempCustomer();
+                repository.addTempIntoRepository();
+            }
+        }
+        return this;
+    }
+
+    public void run() {
+        Menu menu = StartMenu.getInstance();
+        do {
+            Menu nextMenu = menu.printAndInputAndGetNextMenu();
+            if (nextMenu == null)
+                return;
+            nextMenu.setPrevMenu(menu);
+            menu = nextMenu;
+        } while (true);
+    }
+}

src/me/smartstore/customer/Customer.java

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+package me.smartstore.customer;
+
+import me.smartstore.customer.exception.InvalidCustomerIdException;
+import me.smartstore.customer.exception.InvalidCustomerNameException;
+import me.smartstore.group.Group;
+
+public class Customer {
+
+    public static final String ID_FORMAT =
+            "ID Format: 4~16 letters consisting of alphabets, digits, underscore(_)";
+    public static final String NAME_FORMAT =
+            "Name Format: [1,4] space separated chuck(s) of alphabets of [2,32] lengths.";
+    private static final String ID_PATTERN = "^[0-9a-zA-Z_]{4,16}$";
+    private static final String NAME_CHUCK = "[a-z]{2,32}";
+    private static final String NAME_PATTERN = '^' + NAME_CHUCK + "( " + NAME_CHUCK + "){0,3}$";
+    private static final int DEFAULT_SPENT_HOURS = 0;
+    private static final int DEFAULT_TOTAL_PAID_AMOUNT = 0;
+    private static final Group DEFAULT_GROUP = Group.NONE;
+
+    private String id;
+    private String name;
+    private Integer spentHours;
+    private Integer totalPaidAmount;
+    private Group group;
+
+    public Customer(String id, String name) {
+        this(id, name, DEFAULT_SPENT_HOURS, DEFAULT_TOTAL_PAID_AMOUNT, DEFAULT_GROUP);
+    }
+
+    public Customer(String id, String name, Integer spentHours, Integer totalPaidAmount, Group group) {
+        this.id = id;
+        this.name = name;
+        this.spentHours = spentHours;
+        this.totalPaidAmount = totalPaidAmount;
+        this.group = group;
+    }
+
+    public Customer(Customer e) { copy(e); }
+
+    public void copy(Customer e) {
+        id = e.id;
+        name = e.name;
+        spentHours = e.spentHours;
+        totalPaidAmount = e.totalPaidAmount;
+        group = e.group;
+    }
+
+    public String getId() { return id; }
+
+    public void setId(String id, boolean checked) throws InvalidCustomerIdException {
+        if (!checked)
+            checkIfIdIsValid(id);
+        this.id = id;
+    }
+
+    public static void checkIfIdIsValid(String id) throws InvalidCustomerIdException {
+        if (!isValidId(id))
+            throw new InvalidCustomerIdException("Invalid ID input.\n");
+    }
+
+    private static boolean isValidId(String id) {
+        throwIfNull(id, "ID");
+        return id.matches(ID_PATTERN);
+    }
+
+    public String getName() { return name; }
+
+    public void setName(String name) throws InvalidCustomerNameException {
+        checkIfNameIsValid(name);
+        this.name = name;
+    }
+
+    public static void checkIfNameIsValid(String name) throws InvalidCustomerNameException {
+        if (!isValidName(name))
+            throw new InvalidCustomerNameException("Invalid Name input.\n");
+    }
+
+    private static boolean isValidName(String name) {
+        throwIfNull(name, "Name");
+        return name.matches(NAME_PATTERN);
+    }
+
+    private static void throwIfNull(Object o, String title) {
+        if (o == null)
+            throw new IllegalArgumentException(title + " cannot be null.\n");
+    }
+
+    public Integer getSpentHours() { return spentHours; }
+
+    public void setSpentHours(Integer spentHours) { this.spentHours = spentHours; }
+
+    public Integer getTotalPaidAmount() { return totalPaidAmount; }
+
+    public void setTotalPaidAmount(Integer totalPaidAmount) { this.totalPaidAmount = totalPaidAmount; }
+
+    public Group getGroup() { return group; }
+
+    public void updateGroup() {
+        group = Group.getGroupByParameter(spentHours, totalPaidAmount);
+    }
+
+    @Override
+    public String toString() {
+        return String.format("Customer{id='%s', name='%s', spentHours=%d, totalAmountPaid=%d, group=%s}",
+                                id, name, spentHours, totalPaidAmount, group.name());
+    }
+}

src/me/smartstore/customer/CustomerRepository.java

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+package me.smartstore.customer;
+
+import me.smartstore.customer.exception.DuplicateCustomerIdException;
+import me.smartstore.customer.exception.InvalidCustomerIdException;
+import me.smartstore.customer.exception.InvalidCustomerNameException;
+import me.smartstore.group.Group;
+
+public class CustomerRepository extends List<Customer> {
+
+    private static class InstanceHolder {
+        private static final CustomerRepository INSTANCE = new CustomerRepository();
+    }
+    public static CustomerRepository getInstance() { return InstanceHolder.INSTANCE; }
+    private CustomerRepository() {}
+
+    private Customer tempCustomer;
+    private int tempIdx;
+
+    public void resetTempCustomer() { tempCustomer = new Customer(null, null); }
+
+    public void checkIfHasNoDuplicate(String id) throws DuplicateCustomerIdException {
+        if (hasCustomerWithId(id))
+            throw new DuplicateCustomerIdException("The customer already exists which has same id.");
+    }
+
+    private boolean hasCustomerWithId(String id) {
+        assert id != null;
+        for (Customer customer : this)
+            if (id.equals(customer.getId()))
+                return true;
+        return false;
+    }
+
+    public void setTempId(String id) throws InvalidCustomerIdException, DuplicateCustomerIdException {
+        Customer.checkIfIdIsValid(id);
+        checkIfHasNoDuplicate(id);
+        tempCustomer.setId(id, true);
+    }
+
+    public void setTempName(String name) throws InvalidCustomerNameException {
+        tempCustomer.setName(name);
+    }
+
+    public void setTempSpentHours(Integer spentHours) { tempCustomer.setSpentHours(spentHours); }
+
+    public void setTempTotalPaidAmount(Integer totalPaidAmount) { tempCustomer.setTotalPaidAmount(totalPaidAmount); }
+
+    public String getTempInfo() {
+        updateGroupOfTempCustomer();
+        return tempCustomer.toString();
+    }
+
+    public void addTempIntoRepository() {
+        // app logic에 따라 다음 두 구문이 true 임을 보장합니다.
+        assert tempCustomer != null;
+        assert !isReachedMaxCapacity();
+
+        add(tempCustomer);
+        tempCustomer = null;
+    }
+
+    public boolean isTempIdNull() {return tempCustomer.getId() == null; }
+
+    public String deleteAndGetInfoOf(int num) {
+        int idx = num - 1;
+        return remove(idx).toString();
+    }
+
+    public String setTempAndGetInfoOf(int num) {
+        int idx = num - 1;
+        Customer updatingCustomer = get(idx);
+        tempCustomer = new Customer(updatingCustomer);
+        tempIdx = idx;
+        return updatingCustomer.toString();
+    }
+
+    public void updateTempInRepository() { get(tempIdx).copy(tempCustomer); }
+
+    public String getUpdateBeforeAndAfterInfo() {
+        Customer before = get(tempIdx);
+        Customer after = tempCustomer;
+        updateGroupOfTempCustomer();
+        return String.format("\nNo. %2d\n", tempIdx) +
+                "Before: " + before + '\n'+
+                "After : " + after;
+    }
+
+    public void updateGroupOfTempCustomer() { tempCustomer.updateGroup(); }
+
+    public void updateGroupIn(Group group) {
+        Group[] groups = Group.values();
+        int idx = 0;
+        while (groups[idx] != group)
+            idx++;
+        assert idx > 0;
+        Group rightLowGroup = groups[idx - 1];
+        for (Customer customer : this) {
+            Group g = customer.getGroup();
+            if (g == group || g == rightLowGroup)
+                customer.updateGroup();
+        }
+    }
+
+    @Override
+    public String toString() {
+        if (isEmpty()) return "No Customers." + " Please input one first.\n";
+        return super.toString();
+    }
+}