#1021 enforce Checkstyle rules in the build
This commit is contained in:
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commit
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@ -32,7 +32,7 @@ import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.Test;
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/**
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/**
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* Test for abstract factory
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* Test for abstract factory.
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*/
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*/
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public class AbstractFactoryTest {
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public class AbstractFactoryTest {
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@ -37,6 +37,10 @@ public class Word extends LetterComposite {
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letters.forEach(this::add);
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letters.forEach(this::add);
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}
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}
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/**
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* Constructor.
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* @param letters to include
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*/
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public Word(char... letters) {
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public Word(char... letters) {
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for (char letter : letters) {
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for (char letter : letters) {
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this.add(new Letter(letter));
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this.add(new Letter(letter));
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@ -23,12 +23,12 @@
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package com.iluwatar.layers.service;
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package com.iluwatar.layers.service;
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import com.iluwatar.layers.dto.CakeInfo;
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import com.iluwatar.layers.dto.CakeLayerInfo;
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import com.iluwatar.layers.dto.CakeToppingInfo;
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import com.iluwatar.layers.dao.CakeDao;
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import com.iluwatar.layers.dao.CakeDao;
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import com.iluwatar.layers.dao.CakeLayerDao;
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import com.iluwatar.layers.dao.CakeLayerDao;
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import com.iluwatar.layers.dao.CakeToppingDao;
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import com.iluwatar.layers.dao.CakeToppingDao;
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import com.iluwatar.layers.dto.CakeInfo;
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import com.iluwatar.layers.dto.CakeLayerInfo;
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import com.iluwatar.layers.dto.CakeToppingInfo;
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import com.iluwatar.layers.entity.Cake;
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import com.iluwatar.layers.entity.Cake;
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import com.iluwatar.layers.entity.CakeLayer;
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import com.iluwatar.layers.entity.CakeLayer;
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import com.iluwatar.layers.entity.CakeTopping;
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import com.iluwatar.layers.entity.CakeTopping;
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@ -40,7 +40,6 @@ import java.util.List;
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import java.util.Optional;
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import java.util.Optional;
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import java.util.Set;
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import java.util.Set;
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import java.util.stream.Collectors;
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import java.util.stream.Collectors;
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import org.springframework.context.support.AbstractApplicationContext;
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import org.springframework.context.support.AbstractApplicationContext;
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import org.springframework.context.support.ClassPathXmlApplicationContext;
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import org.springframework.context.support.ClassPathXmlApplicationContext;
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import org.springframework.stereotype.Service;
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import org.springframework.stereotype.Service;
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@ -70,12 +70,13 @@ public final class App {
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File applicationFile =
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File applicationFile =
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new File(App.class.getClassLoader().getResource("sample-ui/login.html").getPath());
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new File(App.class.getClassLoader().getResource("sample-ui/login.html").getPath());
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// should work for unix like OS (mac, unix etc...)
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// Should work for unix like OS (mac, unix etc...)
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if (Desktop.isDesktopSupported()) {
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if (Desktop.isDesktopSupported()) {
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Desktop.getDesktop().open(applicationFile);
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Desktop.getDesktop().open(applicationFile);
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} else {
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} else {
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// java Desktop not supported - above unlikely to work for Windows so try following instead...
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// Java Desktop not supported - above unlikely to work for Windows so try the
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// following instead...
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Runtime.getRuntime().exec("cmd.exe start " + applicationFile);
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Runtime.getRuntime().exec("cmd.exe start " + applicationFile);
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}
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}
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6
pom.xml
6
pom.xml
@ -384,9 +384,6 @@
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</pluginManagement>
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</pluginManagement>
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<plugins>
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<plugins>
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<!--checkstyle plug-in. checking against googles styles
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see config at checkstyle.xml
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-->
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<plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-checkstyle-plugin</artifactId>
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<artifactId>maven-checkstyle-plugin</artifactId>
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@ -403,7 +400,8 @@
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<suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
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<suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
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<encoding>UTF-8</encoding>
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<encoding>UTF-8</encoding>
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<failOnViolation>true</failOnViolation>
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<failOnViolation>true</failOnViolation>
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<includeTestSourceDirectory>true</includeTestSourceDirectory>
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<violationSeverity>warning</violationSeverity>
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<includeTestSourceDirectory>false</includeTestSourceDirectory>
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</configuration>
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</configuration>
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</execution>
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</execution>
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</executions>
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</executions>
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@ -23,20 +23,22 @@
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package com.iluwatar.producer.consumer;
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package com.iluwatar.producer.consumer;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.Executors;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeUnit;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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/**
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* Producer Consumer Design pattern is a classic concurrency or threading pattern which reduces coupling between
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* Producer Consumer Design pattern is a classic concurrency or threading pattern which reduces
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* Producer and Consumer by separating Identification of work with Execution of Work.
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* coupling between Producer and Consumer by separating Identification of work with
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* <p>
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* Execution of Work.
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* In producer consumer design pattern a shared queue is used to control the flow and this separation allows you to code
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*
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* producer and consumer separately. It also addresses the issue of different timing require to produce item or
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* <p>In producer consumer design pattern a shared queue is used to control the flow and this
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* consuming item. by using producer consumer pattern both Producer and Consumer Thread can work with different speed.
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* separation allows you to code producer and consumer separately. It also addresses the issue
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* of different timing require to produce item or consuming item. by using producer consumer
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* pattern both Producer and Consumer Thread can work with different speed.
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*
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*
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*/
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*/
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public class App {
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public class App {
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@ -44,7 +46,7 @@ public class App {
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private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
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private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
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/**
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/**
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* Program entry point
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* Program entry point.
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*
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*
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* @param args
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* @param args
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* command line args
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* command line args
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@ -27,7 +27,7 @@ import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.slf4j.LoggerFactory;
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/**
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/**
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* Class responsible for consume the {@link Item} produced by {@link Producer}
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* Class responsible for consume the {@link Item} produced by {@link Producer}.
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*/
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*/
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public class Consumer {
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public class Consumer {
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@ -43,12 +43,13 @@ public class Consumer {
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}
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}
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/**
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/**
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* Consume item from the queue
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* Consume item from the queue.
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*/
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*/
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public void consume() throws InterruptedException {
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public void consume() throws InterruptedException {
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Item item = queue.take();
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Item item = queue.take();
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LOGGER.info("Consumer [{}] consume item [{}] produced by [{}]", name, item.getId(), item.getProducer());
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LOGGER.info("Consumer [{}] consume item [{}] produced by [{}]", name,
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item.getId(), item.getProducer());
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}
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}
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}
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}
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@ -27,7 +27,7 @@ import java.util.Random;
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/**
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/**
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* Class responsible for producing unit of work that can be expressed as {@link Item} and submitted
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* Class responsible for producing unit of work that can be expressed as {@link Item} and submitted
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* to queue
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* to queue.
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*/
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*/
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public class Producer {
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public class Producer {
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}
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}
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/**
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/**
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* Put item in the queue
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* Put item in the queue.
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*/
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*/
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public void produce() throws InterruptedException {
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public void produce() throws InterruptedException {
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@ -22,8 +22,6 @@
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*/
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*/
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package com.iluwatar.promise;
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package com.iluwatar.promise;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.Map;
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import java.util.Map;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CompletableFuture;
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@ -32,10 +30,12 @@ import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.Executors;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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/**
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*
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* The Promise object is used for asynchronous computations. A Promise represents an operation
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* The Promise object is used for asynchronous computations. A Promise represents an operation
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* that hasn't completed yet, but is expected in the future.
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* that hasn't completed yet, but is expected in the future.
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*
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*
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* <p>A Promise represents a proxy for a value not necessarily known when the promise is created. It
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* <p>A Promise represents a proxy for a value not necessarily known when the promise is created. It
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* allows you to associate dependent promises to an asynchronous action's eventual success value or
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* allows you to associate dependent promises to an asynchronous action's eventual success value or
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* <li> Prevents callback hell and provides callback aggregation
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* <li> Prevents callback hell and provides callback aggregation
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* </ul>
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* </ul>
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*
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*
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* <p>
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* <p>In this application the usage of promise is demonstrated with two examples:
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* In this application the usage of promise is demonstrated with two examples:
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* <ul>
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* <ul>
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* <li>Count Lines: In this example a file is downloaded and its line count is calculated.
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* <li>Count Lines: In this example a file is downloaded and its line count is calculated.
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* The calculated line count is then consumed and printed on console.
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* The calculated line count is then consumed and printed on console.
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* <li>Lowest Character Frequency: In this example a file is downloaded and its lowest frequency
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* <li>Lowest Character Frequency: In this example a file is downloaded and its lowest frequency
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* character is found and printed on console. This happens via a chain of promises, we start with
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* character is found and printed on console. This happens via a chain of promises, we start with
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* a file download promise, then a promise of character frequency, then a promise of lowest frequency
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* a file download promise, then a promise of character frequency, then a promise of lowest
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* character which is finally consumed and result is printed on console.
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* frequency character which is finally consumed and result is printed on console.
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* </ul>
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* </ul>
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*
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*
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* @see CompletableFuture
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* @see CompletableFuture
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@ -76,7 +75,7 @@ public class App {
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}
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}
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/**
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/**
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* Program entry point
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* Program entry point.
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* @param args arguments
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* @param args arguments
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* @throws InterruptedException if main thread is interrupted.
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* @throws InterruptedException if main thread is interrupted.
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* @throws ExecutionException if an execution error occurs.
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* @throws ExecutionException if an execution error occurs.
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@ -23,9 +23,6 @@
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package com.iluwatar.promise;
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package com.iluwatar.promise;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.BufferedReader;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.File;
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import java.io.FileReader;
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import java.io.FileReader;
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@ -39,8 +36,11 @@ import java.util.Iterator;
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import java.util.Map;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.Map.Entry;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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/**
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* Utility to perform various operations
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* Utility to perform various operations.
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*/
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*/
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public class Utility {
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public class Utility {
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@ -71,7 +71,8 @@ public class Utility {
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}
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}
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/**
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/**
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* @return the character with lowest frequency if it exists, {@code Optional.empty()} otherwise.
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* Return the character with the lowest frequency, if exists.
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* @return the character, {@code Optional.empty()} otherwise.
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*/
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*/
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public static Character lowestFrequencyChar(Map<Character, Integer> charFrequency) {
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public static Character lowestFrequencyChar(Map<Character, Integer> charFrequency) {
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Character lowestFrequencyChar = null;
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Character lowestFrequencyChar = null;
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}
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}
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/**
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/**
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* @return number of lines in the file at provided location. 0 if file does not exist.
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* Count the number of lines in a file.
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* @return number of lines, 0 if file does not exist.
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*/
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*/
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public static Integer countLines(String fileLocation) {
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public static Integer countLines(String fileLocation) {
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int lineCount = 0;
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int lineCount = 0;
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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* THE SOFTWARE.
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*/
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*/
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package com.iluwatar.roleobject;
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package com.iluwatar.roleobject;
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import static com.iluwatar.roleobject.Role.Borrower;
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import static com.iluwatar.roleobject.Role.Investor;
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import org.slf4j.Logger;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.slf4j.LoggerFactory;
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import static com.iluwatar.roleobject.Role.*;
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/**
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/**
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* The Role Object pattern suggests to model context-specific views
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* The Role Object pattern suggests to model context-specific views
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* of an object as separate role objects which are
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* of an object as separate role objects which are
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@ -39,55 +41,60 @@ import static com.iluwatar.roleobject.Role.*;
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* investor, respectively. Both roles could as well be played by a single {@link Customer} object.
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* investor, respectively. Both roles could as well be played by a single {@link Customer} object.
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* The common superclass for customer-specific roles is provided by {@link CustomerRole},
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* The common superclass for customer-specific roles is provided by {@link CustomerRole},
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* which also supports the {@link Customer} interface.
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* which also supports the {@link Customer} interface.
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* <p>
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*
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* The {@link CustomerRole} class is abstract and not meant to be instantiated.
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* <p>The {@link CustomerRole} class is abstract and not meant to be instantiated.
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* Concrete subclasses of {@link CustomerRole}, for example {@link BorrowerRole} or {@link InvestorRole},
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* Concrete subclasses of {@link CustomerRole}, for example {@link BorrowerRole}
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* define and implement the interface for specific roles. It is only
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* or {@link InvestorRole}, define and implement the interface for specific roles. It is only
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* these subclasses which are instantiated at runtime.
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* these subclasses which are instantiated at runtime.
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* The {@link BorrowerRole} class defines the context-specific view of {@link Customer} objects as needed by the loan department.
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* The {@link BorrowerRole} class defines the context-specific view of {@link Customer}
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* objects as needed by the loan department.
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* It defines additional operations to manage the customer’s
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* It defines additional operations to manage the customer’s
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* credits and securities. Similarly, the {@link InvestorRole} class adds operations specific
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* credits and securities. Similarly, the {@link InvestorRole} class adds operations specific
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* to the investment department’s view of customers.
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* to the investment department’s view of customers.
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* A client like the loan application may either work with objects of the {@link CustomerRole} class, using the interface class
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* A client like the loan application may either work with objects of the {@link CustomerRole}
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* {@link Customer}, or with objects of concrete {@link CustomerRole} subclasses. Suppose the loan application knows a particular
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* class, using the interface class {@link Customer}, or with objects of concrete
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* {@link Customer} instance through its {@link Customer} interface. The loan application may want to check whether the {@link Customer}
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* {@link CustomerRole} subclasses. Suppose the loan application knows a particular
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* object plays the role of Borrower.
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* {@link Customer} instance through its {@link Customer} interface. The loan application
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* To this end it calls {@link Customer#hasRole(Role)} with a suitable role specification. For the purpose of
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* may want to check whether the {@link Customer} object plays the role of Borrower.
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* our example, let’s assume we can name roles with enum.
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* To this end it calls {@link Customer#hasRole(Role)} with a suitable role specification. For
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* If the {@link Customer} object can play the role named “Borrower,” the loan application will ask it
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* the purpose of our example, let’s assume we can name roles with enum.
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* to return a reference to the corresponding object.
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* If the {@link Customer} object can play the role named “Borrower,” the loan application will
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* ask it to return a reference to the corresponding object.
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* The loan application may now use this reference to call Borrower-specific operations.
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* The loan application may now use this reference to call Borrower-specific operations.
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*/
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*/
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public class ApplicationRoleObject {
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public class ApplicationRoleObject {
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private static final Logger logger = LoggerFactory.getLogger(Role.class);
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private static final Logger logger = LoggerFactory.getLogger(Role.class);
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public static void main(String[] args) {
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/**
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Customer customer = Customer.newCustomer(Borrower, Investor);
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* Main entry point.
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*
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* @param args program arguments
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*/
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public static void main(String[] args) {
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Customer customer = Customer.newCustomer(Borrower, Investor);
|
||||||
|
|
||||||
logger.info(" the new customer created : {}", customer);
|
logger.info(" the new customer created : {}", customer);
|
||||||
|
|
||||||
boolean hasBorrowerRole = customer.hasRole(Borrower);
|
boolean hasBorrowerRole = customer.hasRole(Borrower);
|
||||||
logger.info(" customer has a borrowed role - {}", hasBorrowerRole);
|
logger.info(" customer has a borrowed role - {}", hasBorrowerRole);
|
||||||
boolean hasInvestorRole = customer.hasRole(Investor);
|
boolean hasInvestorRole = customer.hasRole(Investor);
|
||||||
logger.info(" customer has an investor role - {}", hasInvestorRole);
|
logger.info(" customer has an investor role - {}", hasInvestorRole);
|
||||||
|
|
||||||
customer.getRole(Investor, InvestorRole.class)
|
customer.getRole(Investor, InvestorRole.class)
|
||||||
.ifPresent(inv -> {
|
.ifPresent(inv -> {
|
||||||
inv.setAmountToInvest(1000);
|
inv.setAmountToInvest(1000);
|
||||||
inv.setName("Billy");
|
inv.setName("Billy");
|
||||||
});
|
});
|
||||||
customer.getRole(Borrower, BorrowerRole.class)
|
customer.getRole(Borrower, BorrowerRole.class)
|
||||||
.ifPresent(inv -> inv.setName("Johny"));
|
.ifPresent(inv -> inv.setName("Johny"));
|
||||||
|
|
||||||
customer.getRole(Investor, InvestorRole.class)
|
|
||||||
.map(InvestorRole::invest)
|
|
||||||
.ifPresent(logger::info);
|
|
||||||
|
|
||||||
customer.getRole(Borrower, BorrowerRole.class)
|
|
||||||
.map(BorrowerRole::borrow)
|
|
||||||
.ifPresent(logger::info);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
customer.getRole(Investor, InvestorRole.class)
|
||||||
|
.map(InvestorRole::invest)
|
||||||
|
.ifPresent(logger::info);
|
||||||
|
|
||||||
|
customer.getRole(Borrower, BorrowerRole.class)
|
||||||
|
.map(BorrowerRole::borrow)
|
||||||
|
.ifPresent(logger::info);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
@ -20,21 +20,23 @@
|
|||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
* THE SOFTWARE.
|
* THE SOFTWARE.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
package com.iluwatar.roleobject;
|
package com.iluwatar.roleobject;
|
||||||
|
|
||||||
public class BorrowerRole extends CustomerRole{
|
public class BorrowerRole extends CustomerRole {
|
||||||
private String name;
|
|
||||||
|
|
||||||
public String getName() {
|
private String name;
|
||||||
return name;
|
|
||||||
}
|
|
||||||
|
|
||||||
public void setName(String name) {
|
public String getName() {
|
||||||
this.name = name;
|
return name;
|
||||||
}
|
}
|
||||||
|
|
||||||
public String borrow(){
|
public void setName(String name) {
|
||||||
return String.format("Borrower %s wants to get some money.",name);
|
this.name = name;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
public String borrow() {
|
||||||
|
return String.format("Borrower %s wants to get some money.", name);
|
||||||
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
|
@ -20,6 +20,7 @@
|
|||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
* THE SOFTWARE.
|
* THE SOFTWARE.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
package com.iluwatar.roleobject;
|
package com.iluwatar.roleobject;
|
||||||
|
|
||||||
import java.util.Optional;
|
import java.util.Optional;
|
||||||
@ -29,51 +30,52 @@ import java.util.Optional;
|
|||||||
*/
|
*/
|
||||||
public abstract class Customer {
|
public abstract class Customer {
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Add specific role @see {@link Role}
|
* Add specific role @see {@link Role}.
|
||||||
*
|
* @param role to add
|
||||||
* @param role to add
|
* @return true if the operation has been successful otherwise false
|
||||||
* @return true if the operation has been successful otherwise false
|
*/
|
||||||
*/
|
public abstract boolean addRole(Role role);
|
||||||
public abstract boolean addRole(Role role);
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Check specific role @see {@link Role}
|
* Check specific role @see {@link Role}.
|
||||||
*
|
* @param role to check
|
||||||
* @param role to check
|
* @return true if the role exists otherwise false
|
||||||
* @return true if the role exists otherwise false
|
*/
|
||||||
*/
|
|
||||||
|
|
||||||
public abstract boolean hasRole(Role role);
|
public abstract boolean hasRole(Role role);
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Remove specific role @see {@link Role}
|
* Remove specific role @see {@link Role}.
|
||||||
*
|
* @param role to remove
|
||||||
* @param role to remove
|
* @return true if the operation has been successful otherwise false
|
||||||
* @return true if the operation has been successful otherwise false
|
*/
|
||||||
*/
|
public abstract boolean remRole(Role role);
|
||||||
public abstract boolean remRole(Role role);
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Get specific instance associated with this role @see {@link Role}
|
* Get specific instance associated with this role @see {@link Role}.
|
||||||
*
|
* @param role to get
|
||||||
* @param role to get
|
* @param expectedRole instance class expected to get
|
||||||
* @param expectedRole instance class expected to get
|
* @return optional with value if the instance exists and corresponds expected class
|
||||||
* @return optional with value if the instance exists and corresponds expected class
|
*/
|
||||||
*/
|
public abstract <T extends Customer> Optional<T> getRole(Role role, Class<T> expectedRole);
|
||||||
public abstract <T extends Customer> Optional<T> getRole(Role role, Class<T> expectedRole);
|
|
||||||
|
|
||||||
|
|
||||||
public static Customer newCustomer() {
|
public static Customer newCustomer() {
|
||||||
return new CustomerCore();
|
return new CustomerCore();
|
||||||
}
|
}
|
||||||
|
|
||||||
public static Customer newCustomer(Role... role) {
|
/**
|
||||||
Customer customer = newCustomer();
|
* Create {@link Customer} with given roles.
|
||||||
for (Role r : role) {
|
* @param role roles
|
||||||
customer.addRole(r);
|
* @return Customer
|
||||||
}
|
*/
|
||||||
return customer;
|
public static Customer newCustomer(Role... role) {
|
||||||
|
Customer customer = newCustomer();
|
||||||
|
for (Role r : role) {
|
||||||
|
customer.addRole(r);
|
||||||
}
|
}
|
||||||
|
return customer;
|
||||||
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
|
@ -20,56 +20,60 @@
|
|||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
* THE SOFTWARE.
|
* THE SOFTWARE.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
package com.iluwatar.roleobject;
|
package com.iluwatar.roleobject;
|
||||||
|
|
||||||
import java.util.*;
|
import java.util.Arrays;
|
||||||
|
import java.util.HashMap;
|
||||||
|
import java.util.Map;
|
||||||
|
import java.util.Objects;
|
||||||
|
import java.util.Optional;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Core class to store different customer roles
|
* Core class to store different customer roles.
|
||||||
*
|
*
|
||||||
* @see CustomerRole
|
* @see CustomerRole Note: not thread safe
|
||||||
* Note: not thread safe
|
|
||||||
*/
|
*/
|
||||||
public class CustomerCore extends Customer {
|
public class CustomerCore extends Customer {
|
||||||
|
|
||||||
private Map<Role, CustomerRole> roles;
|
private Map<Role, CustomerRole> roles;
|
||||||
|
|
||||||
public CustomerCore() {
|
public CustomerCore() {
|
||||||
roles = new HashMap<>();
|
roles = new HashMap<>();
|
||||||
}
|
}
|
||||||
|
|
||||||
@Override
|
@Override
|
||||||
public boolean addRole(Role role) {
|
public boolean addRole(Role role) {
|
||||||
return role
|
return role
|
||||||
.instance()
|
.instance()
|
||||||
.map(inst -> {
|
.map(inst -> {
|
||||||
roles.put(role, inst);
|
roles.put(role, inst);
|
||||||
return true;
|
return true;
|
||||||
})
|
})
|
||||||
.orElse(false);
|
.orElse(false);
|
||||||
}
|
}
|
||||||
|
|
||||||
@Override
|
@Override
|
||||||
public boolean hasRole(Role role) {
|
public boolean hasRole(Role role) {
|
||||||
return roles.containsKey(role);
|
return roles.containsKey(role);
|
||||||
}
|
}
|
||||||
|
|
||||||
@Override
|
@Override
|
||||||
public boolean remRole(Role role) {
|
public boolean remRole(Role role) {
|
||||||
return Objects.nonNull(roles.remove(role));
|
return Objects.nonNull(roles.remove(role));
|
||||||
}
|
}
|
||||||
|
|
||||||
@Override
|
@Override
|
||||||
public <T extends Customer> Optional<T> getRole(Role role, Class<T> expectedRole) {
|
public <T extends Customer> Optional<T> getRole(Role role, Class<T> expectedRole) {
|
||||||
return Optional
|
return Optional
|
||||||
.ofNullable(roles.get(role))
|
.ofNullable(roles.get(role))
|
||||||
.filter(expectedRole::isInstance)
|
.filter(expectedRole::isInstance)
|
||||||
.map(expectedRole::cast);
|
.map(expectedRole::cast);
|
||||||
}
|
}
|
||||||
|
|
||||||
@Override
|
@Override
|
||||||
public String toString() {
|
public String toString() {
|
||||||
String roles = Arrays.toString(this.roles.keySet().toArray());
|
String roles = Arrays.toString(this.roles.keySet().toArray());
|
||||||
return "Customer{roles=" + roles + "}";
|
return "Customer{roles=" + roles + "}";
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
@ -20,9 +20,11 @@
|
|||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
* THE SOFTWARE.
|
* THE SOFTWARE.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
package com.iluwatar.roleobject;
|
package com.iluwatar.roleobject;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Key abstraction for segregated roles
|
* Key abstraction for segregated roles.
|
||||||
*/
|
*/
|
||||||
public abstract class CustomerRole extends CustomerCore{}
|
public abstract class CustomerRole extends CustomerCore{
|
||||||
|
}
|
||||||
|
@ -20,29 +20,32 @@
|
|||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
* THE SOFTWARE.
|
* THE SOFTWARE.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
package com.iluwatar.roleobject;
|
package com.iluwatar.roleobject;
|
||||||
|
|
||||||
public class InvestorRole extends CustomerRole {
|
public class InvestorRole extends CustomerRole {
|
||||||
private String name;
|
|
||||||
private long amountToInvest;
|
|
||||||
|
|
||||||
public String getName() {
|
private String name;
|
||||||
return name;
|
|
||||||
}
|
|
||||||
|
|
||||||
public void setName(String name) {
|
private long amountToInvest;
|
||||||
this.name = name;
|
|
||||||
}
|
|
||||||
|
|
||||||
public long getAmountToInvest() {
|
public String getName() {
|
||||||
return amountToInvest;
|
return name;
|
||||||
}
|
}
|
||||||
|
|
||||||
public void setAmountToInvest(long amountToInvest) {
|
public void setName(String name) {
|
||||||
this.amountToInvest = amountToInvest;
|
this.name = name;
|
||||||
}
|
}
|
||||||
|
|
||||||
public String invest() {
|
public long getAmountToInvest() {
|
||||||
return String.format("Investor %s has invested %d dollars", name, amountToInvest);
|
return amountToInvest;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
public void setAmountToInvest(long amountToInvest) {
|
||||||
|
this.amountToInvest = amountToInvest;
|
||||||
|
}
|
||||||
|
|
||||||
|
public String invest() {
|
||||||
|
return String.format("Investor %s has invested %d dollars", name, amountToInvest);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
@ -20,36 +20,41 @@
|
|||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
* THE SOFTWARE.
|
* THE SOFTWARE.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
package com.iluwatar.roleobject;
|
package com.iluwatar.roleobject;
|
||||||
|
|
||||||
|
import java.util.Optional;
|
||||||
|
|
||||||
import org.slf4j.Logger;
|
import org.slf4j.Logger;
|
||||||
import org.slf4j.LoggerFactory;
|
import org.slf4j.LoggerFactory;
|
||||||
|
|
||||||
import java.util.Optional;
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Possible roles
|
* Possible roles.
|
||||||
*/
|
*/
|
||||||
public enum Role {
|
public enum Role {
|
||||||
Borrower(BorrowerRole.class), Investor(InvestorRole.class);
|
|
||||||
|
|
||||||
private Class<? extends CustomerRole> typeCst;
|
Borrower(BorrowerRole.class), Investor(InvestorRole.class);
|
||||||
|
|
||||||
Role(Class<? extends CustomerRole> typeCst) {
|
private Class<? extends CustomerRole> typeCst;
|
||||||
this.typeCst = typeCst;
|
|
||||||
}
|
Role(Class<? extends CustomerRole> typeCst) {
|
||||||
|
this.typeCst = typeCst;
|
||||||
private static final Logger logger = LoggerFactory.getLogger(Role.class);
|
}
|
||||||
|
|
||||||
@SuppressWarnings("unchecked")
|
private static final Logger logger = LoggerFactory.getLogger(Role.class);
|
||||||
public <T extends CustomerRole> Optional<T> instance() {
|
|
||||||
Class<? extends CustomerRole> typeCst = this.typeCst;
|
/**
|
||||||
try {
|
* Get instance.
|
||||||
return (Optional<T>) Optional.of(typeCst.newInstance());
|
*/
|
||||||
} catch (InstantiationException | IllegalAccessException e) {
|
@SuppressWarnings("unchecked")
|
||||||
logger.error("error creating an object", e);
|
public <T extends CustomerRole> Optional<T> instance() {
|
||||||
}
|
Class<? extends CustomerRole> typeCst = this.typeCst;
|
||||||
return Optional.empty();
|
try {
|
||||||
|
return (Optional<T>) Optional.of(typeCst.newInstance());
|
||||||
|
} catch (InstantiationException | IllegalAccessException e) {
|
||||||
|
logger.error("error creating an object", e);
|
||||||
}
|
}
|
||||||
|
return Optional.empty();
|
||||||
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
|
Loading…
x
Reference in New Issue
Block a user