gaspersic/java-design-patterns
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Merge branch 'master' of https://github.com/themoffster/java-design-patterns into themoffster-master

Browse Source 
Conflicts:
	dao/pom.xml
This commit is contained in:
Ilkka Seppala 2015-10-19 20:44:46 +03:00
commit 339db2a0bf
11 changed files with 358 additions and 167 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
abstract-factory/src/test/java/com/iluwatar/abstractfactory/AppTest.java
View File

@ -7,7 +7,7 @@ import org.junit.Test;
public class AppTest {
private App app = new App();;
private App app = new App();
private KingdomFactory elfFactory;
private KingdomFactory orcFactory;

42
dao/pom.xml
View File

@ -1,18 +1,28 @@
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.iluwatar</groupId>
<artifactId>java-design-patterns</artifactId>
<version>1.7.0</version>
</parent>
<artifactId>dao</artifactId>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.iluwatar</groupId>
<artifactId>java-design-patterns</artifactId>
<version>1.7.0</version>
</parent>
<artifactId>dao</artifactId>
<properties>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</dependency>
</dependencies>
</project>

47
dao/src/main/java/com/iluwatar/dao/App.java
View File

@ -3,6 +3,8 @@ package com.iluwatar.dao;
import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Logger;
/**
*
* Data Access Object (DAO) is an object that provides an abstract interface to some type of database or other
@ -17,43 +19,38 @@ import java.util.List;
*/
public class App {
private static Logger LOGGER = Logger.getLogger(App.class);
/**
* Program entry point
* @param args command line args
* Program entry point.
*
* @param args command line args.
*/
public static void main(String[] args) {
CustomerDaoImpl customerDao = new CustomerDaoImpl(generateSampleCustomers());
System.out.println("customerDao.getAllCustomers(): " + customerDao.getAllCustomers());
System.out.println("customerDao.getCusterById(2): " + customerDao.getCusterById(2));
Customer customer = new Customer(4, "Dan", "Danson");
public static void main(final String[] args) {
final CustomerDaoImpl customerDao = new CustomerDaoImpl(generateSampleCustomers());
LOGGER.info("customerDao.getAllCustomers(): " + customerDao.getAllCustomers());
LOGGER.info("customerDao.getCusterById(2): " + customerDao.getCustomerById(2));
final Customer customer = new Customer(4, "Dan", "Danson");
customerDao.addCustomer(customer);
System.out.println("customerDao.getAllCustomers(): " + customerDao.getAllCustomers());
LOGGER.info("customerDao.getAllCustomers(): " + customerDao.getAllCustomers());
customer.setFirstName("Daniel");
customer.setLastName("Danielson");
customerDao.updateCustomer(customer);
System.out.println("customerDao.getAllCustomers(): " + customerDao.getAllCustomers());
LOGGER.info("customerDao.getAllCustomers(): " + customerDao.getAllCustomers());
customerDao.deleteCustomer(customer);
System.out.println("customerDao.getAllCustomers(): " + customerDao.getAllCustomers());
LOGGER.info("customerDao.getAllCustomers(): " + customerDao.getAllCustomers());
}
/**
* Generate customers
* @return list of customers
* Generate customers.
*
* @return list of customers.
*/
public static List<Customer> generateSampleCustomers() {
Customer customer1 = new Customer(1, "Adam", "Adamson");
Customer customer2 = new Customer(2, "Bob", "Bobson");
Customer customer3 = new Customer(3, "Carl", "Carlson");
List<Customer> customers = new ArrayList<Customer>();
final Customer customer1 = new Customer(1, "Adam", "Adamson");
final Customer customer2 = new Customer(2, "Bob", "Bobson");
final Customer customer3 = new Customer(3, "Carl", "Carlson");
final List<Customer> customers = new ArrayList<Customer>();
customers.add(customer1);
customers.add(customer2);
customers.add(customer3);

116
dao/src/main/java/com/iluwatar/dao/Customer.java
View File

@ -6,65 +6,63 @@ package com.iluwatar.dao;
*
*/
public class Customer {
private int id;
private String firstName;
private String lastName;
public Customer(int id, String firstName, String lastName) {
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
private int id;
private String firstName;
private String lastName;
public Customer(final int id, final String firstName, final String lastName) {
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
}
public int getId() {
return id;
}
public void setId(final int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(final String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(final String lastName) {
this.lastName = lastName;
}
@Override
public String toString() {
return "Customer{" + "id=" + getId() + ", firstName='" + getFirstName() + '\'' + ", lastName='"
+ getLastName() + '\'' + '}';
}
@Override
public boolean equals(final Object o) {
boolean isEqual = false;
if (this == o) {
isEqual = true;
} else if (o != null && (getClass() == o.getClass())) {
final Customer customer = (Customer) o;
if (getId() == customer.getId())
isEqual = true;
}
return isEqual;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
@Override
public String toString() {
return "Customer{" +
"id=" + id +
", firstName='" + firstName + '\'' +
", lastName='" + lastName + '\'' +
'}';
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Customer customer = (Customer) o;
if (id != customer.id) return false;
return true;
}
@Override
public int hashCode() {
int result = id;
return result;
}
}
@Override
public int hashCode() {
int result = getId();
return result;
}
}

18
dao/src/main/java/com/iluwatar/dao/CustomerDao.java
View File

@ -8,10 +8,14 @@ import java.util.List;
*
*/
public interface CustomerDao {
public List<Customer> getAllCustomers();
public Customer getCusterById(int id);
public void addCustomer(Customer customer);
public void updateCustomer(Customer customer);
public void deleteCustomer(Customer customer);
}
List<Customer> getAllCustomers();
Customer getCustomerById(int id);
void addCustomer(Customer customer);
void updateCustomer(Customer customer);
void deleteCustomer(Customer customer);
}

85
dao/src/main/java/com/iluwatar/dao/CustomerDaoImpl.java
View File

@ -4,54 +4,59 @@ import java.util.List;
/**
*
* The data access object (DAO) is an object that provides an abstract interface to some type of database or other persistence mechanism.
* By mapping application calls to the persistence layer, DAO provide some specific data operations without exposing details of the database.
* This isolation supports the Single responsibility principle. It separates what data accesses the application needs, in terms of
* domain-specific objects and data types (the public interface of the DAO), from how these needs can be satisfied with a specific DBMS,
* database schema, etc.
* The data access object (DAO) is an object that provides an abstract interface to some type of
* database or other persistence mechanism. By mapping application calls to the persistence layer,
* DAO provide some specific data operations without exposing details of the database. This
* isolation supports the Single responsibility principle. It separates what data accesses the
* application needs, in terms of domain-specific objects and data types (the public interface of
* the DAO), from how these needs can be satisfied with a specific DBMS, database schema, etc.
*
*/
public class CustomerDaoImpl implements CustomerDao {
// Represents the DB structure for our example so we don't have to managed it ourselves
// Note: Normally this would be in the form of an actual database and not part of the Dao Impl.
private List<Customer> customers;
// Represents the DB structure for our example so we don't have to managed it ourselves
// Note: Normally this would be in the form of an actual database and not part of the Dao Impl.
private List<Customer> customers;
public CustomerDaoImpl(List<Customer> customers) {
this.customers = customers;
public CustomerDaoImpl(final List<Customer> customers) {
this.customers = customers;
}
@Override
public List<Customer> getAllCustomers() {
return customers;
}
@Override
public Customer getCustomerById(final int id) {
Customer customer = null;
for (final Customer cus : getAllCustomers()) {
if (cus.getId() == id) {
customer = cus;
break;
}
}
return customer;
}
@Override
public List<Customer> getAllCustomers() {
return customers;
@Override
public void addCustomer(final Customer customer) {
if (getCustomerById(customer.getId()) == null) {
customers.add(customer);
}
}
@Override
public Customer getCusterById(int id) {
for (int i = 0; i < customers.size(); i++) {
if (customers.get(i).getId() == id) {
return customers.get(i);
}
}
// No customer found
return null;
@Override
public void updateCustomer(final Customer customer) {
if (getAllCustomers().contains(customer)) {
final int index = getAllCustomers().indexOf(customer);
getAllCustomers().set(index, customer);
}
}
@Override
public void addCustomer(Customer customer) {
customers.add(customer);
}
@Override
public void updateCustomer(Customer customer) {
if (customers.contains(customer)) {
customers.set(customers.indexOf(customer), customer);
}
}
@Override
public void deleteCustomer(Customer customer) {
customers.remove(customer);
}
}
@Override
public void deleteCustomer(final Customer customer) {
getAllCustomers().remove(customer);
}
}

19
dao/src/test/java/com/iluwatar/dao/AppTest.java
View File

@ -1,19 +0,0 @@
package com.iluwatar.dao;
import org.junit.Test;
import com.iluwatar.dao.App;
/**
*
* Application test
*
*/
public class AppTest {
@Test
public void test() {
String[] args = {};
App.main(args);
}
}

99
dao/src/test/java/com/iluwatar/dao/CustomerDaoImplTest.java Normal file
View File

@ -0,0 +1,99 @@
package com.iluwatar.dao;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.ArrayList;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
public class CustomerDaoImplTest {
private CustomerDaoImpl impl;
private List<Customer> customers;
private static final Customer CUSTOMER = new Customer(1, "Freddy", "Kruger");
@Before
public void setUp() {
customers = new ArrayList<Customer>();
customers.add(CUSTOMER);
impl = new CustomerDaoImpl(customers);
}
@Test
public void deleteExistingCustomer() {
assertEquals(1, impl.getAllCustomers().size());
impl.deleteCustomer(CUSTOMER);
assertTrue(impl.getAllCustomers().isEmpty());
}
@Test
public void deleteNonExistingCustomer() {
final Customer nonExistingCustomer = new Customer(2, "Robert", "Englund");
impl.deleteCustomer(nonExistingCustomer);
assertEquals(1, impl.getAllCustomers().size());
}
@Test
public void updateExistingCustomer() {
final String newFirstname = "Bernard";
final String newLastname = "Montgomery";
final Customer customer = new Customer(CUSTOMER.getId(), newFirstname, newLastname);
impl.updateCustomer(customer);
final Customer cust = impl.getCustomerById(CUSTOMER.getId());
assertEquals(newFirstname, cust.getFirstName());
assertEquals(newLastname, cust.getLastName());
}
@Test
public void updateNonExistingCustomer() {
final int nonExistingId = getNonExistingCustomerId();
final String newFirstname = "Douglas";
final String newLastname = "MacArthur";
final Customer customer = new Customer(nonExistingId, newFirstname, newLastname);
impl.updateCustomer(customer);
assertNull(impl.getCustomerById(nonExistingId));
final Customer existingCustomer = impl.getCustomerById(CUSTOMER.getId());
assertEquals(CUSTOMER.getFirstName(), existingCustomer.getFirstName());
assertEquals(CUSTOMER.getLastName(), existingCustomer.getLastName());
}
@Test
public void addCustomer() {
final Customer newCustomer = new Customer(3, "George", "Patton");
impl.addCustomer(newCustomer);
assertEquals(2, impl.getAllCustomers().size());
}
@Test
public void addAlreadyAddedCustomer() {
final Customer newCustomer = new Customer(3, "George", "Patton");
impl.addCustomer(newCustomer);
assertEquals(2, impl.getAllCustomers().size());
impl.addCustomer(newCustomer);
assertEquals(2, impl.getAllCustomers().size());
}
@Test
public void getExistinCustomerById() {
assertEquals(CUSTOMER, impl.getCustomerById(CUSTOMER.getId()));
}
@Test
public void getNonExistinCustomerById() {
final int nonExistingId = getNonExistingCustomerId();
assertNull(impl.getCustomerById(nonExistingId));
}
/**
* An arbitrary number which does not correspond to an active Customer id.
*
* @return an int of a customer id which doesn't exist
*/
private int getNonExistingCustomerId() {
return 999;
}
}

74
dao/src/test/java/com/iluwatar/dao/CustomerTest.java Normal file
View File

@ -0,0 +1,74 @@
package com.iluwatar.dao;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import org.junit.Before;
import org.junit.Test;
public class CustomerTest {
private Customer customer;
private static final int ID = 1;
private static final String FIRSTNAME = "Winston";
private static final String LASTNAME = "Churchill";
@Before
public void setUp() {
customer = new Customer(ID, FIRSTNAME, LASTNAME);
}
@Test
public void getAndSetId() {
final int newId = 2;
customer.setId(newId);
assertEquals(newId, customer.getId());
}
@Test
public void getAndSetFirstname() {
final String newFirstname = "Bill";
customer.setFirstName(newFirstname);
assertEquals(newFirstname, customer.getFirstName());
}
@Test
public void getAndSetLastname() {
final String newLastname = "Clinton";
customer.setLastName(newLastname);
assertEquals(newLastname, customer.getLastName());
}
@Test
public void notEqualWithDifferentId() {
final int newId = 2;
final Customer otherCustomer = new Customer(newId, FIRSTNAME, LASTNAME);
assertNotEquals(customer, otherCustomer);
assertNotEquals(customer.hashCode(), otherCustomer.hashCode());
}
@Test
public void equalsWithSameObjectValues() {
final Customer otherCustomer = new Customer(ID, FIRSTNAME, LASTNAME);
assertEquals(customer, otherCustomer);
assertEquals(customer.hashCode(), otherCustomer.hashCode());
}
@Test
public void equalsWithSameObjects() {
assertEquals(customer, customer);
assertEquals(customer.hashCode(), customer.hashCode());
}
@Test
public void testToString() {
final StringBuffer buffer = new StringBuffer();
buffer.append("Customer{id=");
buffer.append("" + customer.getId());
buffer.append(", firstName='");
buffer.append(customer.getFirstName());
buffer.append("\', lastName='");
buffer.append(customer.getLastName() + "\'}");
assertEquals(buffer.toString(), customer.toString());
}
}

17
dao/src/test/resources/log4j.xml Normal file
View File

@ -0,0 +1,17 @@
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="true"
xmlns:log4j='http://jakarta.apache.org/log4j/'>
<appender name="console" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" />
</layout>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="console" />
</root>
</log4j:configuration>

6
pom.xml
View File

@ -19,6 +19,7 @@
<jacoco.version>0.7.2.201409121644</jacoco.version>
<commons-dbcp.version>1.4</commons-dbcp.version>
<camel.version>2.15.3</camel.version>
<log4j.version>1.2.17</log4j.version>
</properties>
<modules>
<module>abstract-factory</module>
@ -126,6 +127,11 @@
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
</dependencies>
</dependencyManagement>