diff --git a/guice/pom.xml b/guice/pom.xml index f3e7873245..0aea662d64 100644 --- a/guice/pom.xml +++ b/guice/pom.xml @@ -1,29 +1,45 @@ - - 4.0.0 - com.baeldung.examples.guice - guice - 1.0-SNAPSHOT - jar - guice + + 4.0.0 + com.baeldung.examples.guice + guice + 1.0-SNAPSHOT + jar + guice - - com.baeldung - parent-modules - 1.0.0-SNAPSHOT - + + com.baeldung + parent-modules + 1.0.0-SNAPSHOT + - - - com.google.inject - guice - ${guice.version} - - + + + com.google.inject + guice + ${guice.version} + - - 4.1.0 - + + org.springframework + spring-context + ${spring.version} + + + + org.springframework + spring-test + ${springtest.version} + test + + + + + 4.2.2 + 5.1.3.RELEASE + 5.1.3.RELEASE + diff --git a/guice/src/main/java/com/baeldung/examples/common/Account.java b/guice/src/main/java/com/baeldung/examples/common/Account.java new file mode 100644 index 0000000000..8f8b5059c5 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/Account.java @@ -0,0 +1,27 @@ +package com.baeldung.examples.common; + +import org.springframework.stereotype.Component; + +@Component +public class Account { + + private String accountNumber; + private String type; + + public String getAccountNumber() { + return accountNumber; + } + + public void setAccountNumber(String accountNumber) { + this.accountNumber = accountNumber; + } + + public String getType() { + return type; + } + + public void setType(String type) { + this.type = type; + } + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/AccountService.java b/guice/src/main/java/com/baeldung/examples/common/AccountService.java new file mode 100644 index 0000000000..97a64e3c6e --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/AccountService.java @@ -0,0 +1,5 @@ +package com.baeldung.examples.common; + +public interface AccountService { + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/AccountServiceImpl.java b/guice/src/main/java/com/baeldung/examples/common/AccountServiceImpl.java new file mode 100644 index 0000000000..969c106d5b --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/AccountServiceImpl.java @@ -0,0 +1,8 @@ +package com.baeldung.examples.common; + +import org.springframework.stereotype.Component; + +@Component +public class AccountServiceImpl implements AccountService { + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/AudioBookService.java b/guice/src/main/java/com/baeldung/examples/common/AudioBookService.java new file mode 100644 index 0000000000..5d501f2051 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/AudioBookService.java @@ -0,0 +1,5 @@ +package com.baeldung.examples.common; + +public interface AudioBookService { + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/AudioBookServiceImpl.java b/guice/src/main/java/com/baeldung/examples/common/AudioBookServiceImpl.java new file mode 100644 index 0000000000..c64e953a58 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/AudioBookServiceImpl.java @@ -0,0 +1,5 @@ +package com.baeldung.examples.common; + +public class AudioBookServiceImpl implements AudioBookService { + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/AuthorService.java b/guice/src/main/java/com/baeldung/examples/common/AuthorService.java new file mode 100644 index 0000000000..9be148b8c3 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/AuthorService.java @@ -0,0 +1,5 @@ +package com.baeldung.examples.common; + +public interface AuthorService { + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/AuthorServiceImpl.java b/guice/src/main/java/com/baeldung/examples/common/AuthorServiceImpl.java new file mode 100644 index 0000000000..bac532e469 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/AuthorServiceImpl.java @@ -0,0 +1,5 @@ +package com.baeldung.examples.common; + +public class AuthorServiceImpl implements AuthorService { + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/BookService.java b/guice/src/main/java/com/baeldung/examples/common/BookService.java new file mode 100644 index 0000000000..56339c1398 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/BookService.java @@ -0,0 +1,5 @@ +package com.baeldung.examples.common; + +public interface BookService { + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/BookServiceImpl.java b/guice/src/main/java/com/baeldung/examples/common/BookServiceImpl.java new file mode 100644 index 0000000000..01f968bbe9 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/BookServiceImpl.java @@ -0,0 +1,10 @@ +package com.baeldung.examples.common; + +import org.springframework.beans.factory.annotation.Autowired; + +public class BookServiceImpl implements BookService { + + @Autowired(required = false) + private AuthorService authorService; + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/PersonDao.java b/guice/src/main/java/com/baeldung/examples/common/PersonDao.java new file mode 100644 index 0000000000..980fee0252 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/PersonDao.java @@ -0,0 +1,5 @@ +package com.baeldung.examples.common; + +public interface PersonDao { + +} diff --git a/guice/src/main/java/com/baeldung/examples/common/PersonDaoImpl.java b/guice/src/main/java/com/baeldung/examples/common/PersonDaoImpl.java new file mode 100644 index 0000000000..971db5aa87 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/common/PersonDaoImpl.java @@ -0,0 +1,8 @@ +package com.baeldung.examples.common; + +import org.springframework.stereotype.Component; + +@Component +public class PersonDaoImpl implements PersonDao { + +} \ No newline at end of file diff --git a/guice/src/main/java/com/baeldung/examples/guice/Foo.java b/guice/src/main/java/com/baeldung/examples/guice/Foo.java new file mode 100644 index 0000000000..fca32b165b --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/guice/Foo.java @@ -0,0 +1,4 @@ +package com.baeldung.examples.guice; + +public class Foo { +} diff --git a/guice/src/main/java/com/baeldung/examples/guice/FooProcessor.java b/guice/src/main/java/com/baeldung/examples/guice/FooProcessor.java new file mode 100644 index 0000000000..f0cba31d9a --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/guice/FooProcessor.java @@ -0,0 +1,12 @@ +package com.baeldung.examples.guice; + +import org.springframework.lang.Nullable; + +import com.google.inject.Inject; + +public class FooProcessor { + + @Inject + @Nullable + private Foo foo; +} \ No newline at end of file diff --git a/guice/src/main/java/com/baeldung/examples/guice/GuicePersonService.java b/guice/src/main/java/com/baeldung/examples/guice/GuicePersonService.java new file mode 100644 index 0000000000..ce12e3e528 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/guice/GuicePersonService.java @@ -0,0 +1,19 @@ +package com.baeldung.examples.guice; + +import com.baeldung.examples.common.PersonDao; +import com.google.inject.Inject; + +public class GuicePersonService { + + @Inject + private PersonDao personDao; + + public PersonDao getPersonDao() { + return personDao; + } + + public void setPersonDao(PersonDao personDao) { + this.personDao = personDao; + } + +} diff --git a/guice/src/main/java/com/baeldung/examples/guice/GuiceUserService.java b/guice/src/main/java/com/baeldung/examples/guice/GuiceUserService.java new file mode 100644 index 0000000000..0e58d0bacf --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/guice/GuiceUserService.java @@ -0,0 +1,19 @@ +package com.baeldung.examples.guice; + +import com.baeldung.examples.common.AccountService; +import com.google.inject.Inject; + +public class GuiceUserService { + + @Inject + private AccountService accountService; + + public AccountService getAccountService() { + return accountService; + } + + public void setAccountService(AccountService accountService) { + this.accountService = accountService; + } + +} diff --git a/guice/src/main/java/com/baeldung/examples/guice/Person.java b/guice/src/main/java/com/baeldung/examples/guice/Person.java new file mode 100644 index 0000000000..d54b5110eb --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/guice/Person.java @@ -0,0 +1,24 @@ +package com.baeldung.examples.guice; + +public class Person { + private String firstName; + + private String lastName; + + 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; + } + +} diff --git a/guice/src/main/java/com/baeldung/examples/guice/modules/GuiceModule.java b/guice/src/main/java/com/baeldung/examples/guice/modules/GuiceModule.java new file mode 100644 index 0000000000..6a380e922b --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/guice/modules/GuiceModule.java @@ -0,0 +1,50 @@ +package com.baeldung.examples.guice.modules; + +import com.baeldung.examples.common.AccountService; +import com.baeldung.examples.common.AccountServiceImpl; +import com.baeldung.examples.common.BookService; +import com.baeldung.examples.common.BookServiceImpl; +import com.baeldung.examples.common.PersonDao; +import com.baeldung.examples.common.PersonDaoImpl; +import com.baeldung.examples.guice.Foo; +import com.baeldung.examples.guice.Person; +import com.google.inject.AbstractModule; +import com.google.inject.Provider; +import com.google.inject.Provides; + +public class GuiceModule extends AbstractModule { + + @Override + protected void configure() { + try { + bind(AccountService.class).to(AccountServiceImpl.class); + bind(Person.class).toConstructor(Person.class.getConstructor()); + // bind(Person.class).toProvider(new Provider() { + // public Person get() { + // Person p = new Person(); + // return p; + // } + // }); + bind(Foo.class).toProvider(new Provider() { + public Foo get() { + return null; + } + }); + bind(PersonDao.class).to(PersonDaoImpl.class); + + } catch (NoSuchMethodException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } catch (SecurityException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } + + } + + @Provides + public BookService bookServiceGenerator() { + return new BookServiceImpl(); + } + +} diff --git a/guice/src/main/java/com/baeldung/examples/spring/SpringBeansConfig.java b/guice/src/main/java/com/baeldung/examples/spring/SpringBeansConfig.java new file mode 100644 index 0000000000..ef0c23142c --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/spring/SpringBeansConfig.java @@ -0,0 +1,17 @@ +package com.baeldung.examples.spring; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; + +import com.baeldung.examples.common.AudioBookService; +import com.baeldung.examples.common.AudioBookServiceImpl; + +@Configuration +public class SpringBeansConfig { + + @Bean + public AudioBookService audioBookServiceGenerator() { + return new AudioBookServiceImpl(); + } + +} diff --git a/guice/src/main/java/com/baeldung/examples/spring/SpringMainConfig.java b/guice/src/main/java/com/baeldung/examples/spring/SpringMainConfig.java new file mode 100644 index 0000000000..1ced22288f --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/spring/SpringMainConfig.java @@ -0,0 +1,21 @@ +package com.baeldung.examples.spring; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.ComponentScan; +import org.springframework.context.annotation.Configuration; +import org.springframework.context.annotation.Import; + +import com.baeldung.examples.common.BookService; +import com.baeldung.examples.common.BookServiceImpl; + +@Configuration +@Import({ SpringBeansConfig.class }) +@ComponentScan("com.baeldung.examples") +public class SpringMainConfig { + + @Bean + public BookService bookServiceGenerator() { + return new BookServiceImpl(); + } + +} diff --git a/guice/src/main/java/com/baeldung/examples/spring/SpringPersonService.java b/guice/src/main/java/com/baeldung/examples/spring/SpringPersonService.java new file mode 100644 index 0000000000..1ab5642f31 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/spring/SpringPersonService.java @@ -0,0 +1,22 @@ +package com.baeldung.examples.spring; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.stereotype.Component; + +import com.baeldung.examples.common.PersonDao; + +@Component +public class SpringPersonService { + + @Autowired + private PersonDao personDao; + + public PersonDao getPersonDao() { + return personDao; + } + + public void setPersonDao(PersonDao personDao) { + this.personDao = personDao; + } + +} diff --git a/guice/src/main/java/com/baeldung/examples/spring/UserService.java b/guice/src/main/java/com/baeldung/examples/spring/UserService.java new file mode 100644 index 0000000000..4173ef8208 --- /dev/null +++ b/guice/src/main/java/com/baeldung/examples/spring/UserService.java @@ -0,0 +1,22 @@ +package com.baeldung.examples.spring; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.stereotype.Component; + +import com.baeldung.examples.common.AccountService; + +@Component +public class UserService { + + @Autowired + private AccountService accountService; + + public AccountService getAccountService() { + return accountService; + } + + public void setAccountService(AccountService accountService) { + this.accountService = accountService; + } + +} diff --git a/guice/src/test/java/com/baeldung/examples/GuiceUnitTest.java b/guice/src/test/java/com/baeldung/examples/GuiceUnitTest.java new file mode 100644 index 0000000000..dd2a89e101 --- /dev/null +++ b/guice/src/test/java/com/baeldung/examples/GuiceUnitTest.java @@ -0,0 +1,61 @@ +package com.baeldung.examples; + +import static org.junit.Assert.assertNotNull; + +import org.junit.Test; + +import com.baeldung.examples.common.BookService; +import com.baeldung.examples.guice.FooProcessor; +import com.baeldung.examples.guice.GuicePersonService; +import com.baeldung.examples.guice.GuiceUserService; +import com.baeldung.examples.guice.Person; +import com.baeldung.examples.guice.modules.GuiceModule; +import com.google.inject.Guice; +import com.google.inject.Injector; + +public class GuiceUnitTest { + + @Test + public void givenAccountServiceInjectedInGuiceUserService_WhenGetAccountServiceInvoked_ThenReturnValueIsNotNull() { + Injector injector = Guice.createInjector(new GuiceModule()); + GuiceUserService guiceUserService = injector.getInstance(GuiceUserService.class); + assertNotNull(guiceUserService.getAccountService()); + } + + @Test + public void givenBookServiceIsRegisteredInModule_WhenBookServiceIsInjected_ThenReturnValueIsNotNull() { + Injector injector = Guice.createInjector(new GuiceModule()); + BookService bookService = injector.getInstance(BookService.class); + assertNotNull(bookService); + } + + @Test + public void givenMultipleBindingsForPerson_WhenPersonIsInjected_ThenTestFailsByProvisionException() { + Injector injector = Guice.createInjector(new GuiceModule()); + Person person = injector.getInstance(Person.class); + assertNotNull(person); + } + + @Test + public void givenFooInjectedToFooProcessorAsOptionalDependency_WhenFooProcessorIsRetrievedFromContext_ThenCreationExceptionIsNotThrown() { + Injector injector = Guice.createInjector(new GuiceModule()); + FooProcessor fooProcessor = injector.getInstance(FooProcessor.class); + assertNotNull(fooProcessor); + } + + @Test + public void givenGuicePersonServiceConstructorAnnotatedByInject_WhenGuicePersonServiceIsInjected_ThenInstanceWillBeCreatedFromTheConstructor() { + Injector injector = Guice.createInjector(new GuiceModule()); + GuicePersonService personService = injector.getInstance(GuicePersonService.class); + assertNotNull(personService); + } + + @Test + public void givenPersonDaoInjectedToGuicePersonServiceBySetterInjection_WhenGuicePersonServiceIsInjected_ThenPersonDaoInitializedByTheSetter() { + Injector injector = Guice.createInjector(new GuiceModule()); + GuicePersonService personService = injector.getInstance(GuicePersonService.class); + assertNotNull(personService); + assertNotNull(personService.getPersonDao()); + } + +} diff --git a/guice/src/test/java/com/baeldung/examples/SpringUnitTest.java b/guice/src/test/java/com/baeldung/examples/SpringUnitTest.java new file mode 100644 index 0000000000..64e1eedcac --- /dev/null +++ b/guice/src/test/java/com/baeldung/examples/SpringUnitTest.java @@ -0,0 +1,63 @@ +package com.baeldung.examples; + +import static org.junit.Assert.assertNotNull; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.context.ApplicationContext; +import org.springframework.test.context.ContextConfiguration; +import org.springframework.test.context.junit4.SpringRunner; + +import com.baeldung.examples.common.AudioBookService; +import com.baeldung.examples.common.BookService; +import com.baeldung.examples.spring.SpringMainConfig; +import com.baeldung.examples.spring.SpringPersonService; +import com.baeldung.examples.spring.UserService; + +@RunWith(SpringRunner.class) +@ContextConfiguration(classes = { SpringMainConfig.class }) +public class SpringUnitTest { + @Autowired + ApplicationContext context; + + @Test + public void givenAccountServiceAutowiredToUserService_WhenGetAccountServiceInvoked_ThenReturnValueIsNotNull() { + UserService userService = context.getBean(UserService.class); + assertNotNull(userService.getAccountService()); + } + + @Test + public void givenBookServiceIsRegisteredAsBeanInContext_WhenBookServiceIsRetrievedFromContext_ThenReturnValueIsNotNull() { + BookService bookService = context.getBean(BookService.class); + assertNotNull(bookService); + } + + @Test + public void givenBookServiceIsRegisteredAsBeanInContextByOverridingAudioBookService_WhenAudioBookServiceIsRetrievedFromContext_ThenNoSuchBeanDefinitionExceptionIsThrown() { + BookService bookService = context.getBean(BookService.class); + assertNotNull(bookService); + AudioBookService audioBookService = context.getBean(AudioBookService.class); + assertNotNull(audioBookService); + } + + @Test + public void givenAuthorServiceAutowiredToBookServiceAsOptionalDependency_WhenBookServiceIsRetrievedFromContext_ThenNoSuchBeanDefinitionExceptionIsNotThrown() { + BookService bookService = context.getBean(BookService.class); + assertNotNull(bookService); + } + + @Test + public void givenSpringPersonServiceConstructorAnnotatedByAutowired_WhenSpringPersonServiceIsRetrievedFromContext_ThenInstanceWillBeCreatedFromTheConstructor() { + SpringPersonService personService = context.getBean(SpringPersonService.class); + assertNotNull(personService); + } + + @Test + public void givenPersonDaoAutowiredToSpringPersonServiceBySetterInjection_WhenSpringPersonServiceRetrievedFromContext_ThenPersonDaoInitializedByTheSetter() { + SpringPersonService personService = context.getBean(SpringPersonService.class); + assertNotNull(personService); + assertNotNull(personService.getPersonDao()); + } + +}