클래스의 상속과 관련된 다형성은 부모객체로 인스턴스를 생성하여 부모클래스의 메소드와 자식클래스 메소드 2가지를 업/다운캐스팅하여 자유롭게 호출할 수 있지만, 단일상속이라는 한계 때문에 다른 부모클래스의 메소드는 호출할 수가 없잖아요? 그래서 인터페이스가 존재하는 이유구요. 마찬가지로, 인스턴스를 생성할 때 다형성을 활용하여 인터페이스 객체(부모 객체)로 생성할 수는 있지만, 이것은 ISP(Interface Segregation Principle)원칙에 따라 detect(), report() 2개의 메소드를 호출하려면 Detectable, Reportable 객체 2개를 생성해야 하기 때문에 메모리가 효율적으로 관리되지 못하는거구요. 따라서 구상클래스인 FactoryCam에서 인터페이스 변수를 직접 생성하고 setter함수로 필요한 인터페이스 변수를 주입한 다음(Dependency Injection) , 주입당한 객체는 인터페이스에 의존하기 때문에(Reportable, Detectable) 동시에 기능이 다른 2가지 메소드를 호출할 수 있는거구요.(Dependency Inversion Principle) ... 과정을 이해하였지만 말로 풀어내니까 굉장히 장황하군요 사실 이 부분은 인터페이스 문법이라기보다는 디자인 패턴과 관련이 있지 않나싶습니다.
방향 그래프 무방향 그래프에 따라서 자료구조에 자료를 저장하는 방법이 다르다고 하셨습니다. 그런데 지금 이 문제에서는 방향그래프 아닌가요?? 간선,엣지들을 보면 모두 방향이 있는 거 같은데, 왜 무방향그래프를 저장할 때처럼 arraylist에 값을 저장하는지 모르겠습니다.
React 진영에서 functional component나 hook 등은 순수 함수로 작성하도록 권장되는 것으로 알고 있는데요, renderBlogList 함수는 외부 스코프에 있는 loading , posts 값에 의존성을 가지기 때문에 순수함수가 될 수 없는 것으로 보이는데 이를 순수함수로 변경하는 것이 더 나은 코드를 작성하는 방법일까요? 아니면 굳이 그렇게 할 필요까지는 없을지 궁금합니다.
실전 예제 4를 하고 있는데 create로 설정하면 메인메서드 실행할 때마다 테이블 드랍되고 실행되어야하는데 아래와 같은 오류가 자꾸 발생하면서 실행이 안되는데 왜그럴까요 ㅠㅠ 수동으로 데이터베이스에서 드랍하고 실행하거나 update 등으로만 설정해야 잘 작동되는데 왜그럴까요... /Library/Java/JavaVirtualMachines/jdk-11.jdk/Contents/Home/bin/java -javaagent:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar=49362:/Applications/IntelliJ IDEA.app/Contents/bin -Dfile.encoding=UTF-8 -classpath /Users/hwang-gyuhyeog/Desktop/JPA/1.자바 ORM 표준 JPA 프로그래밍-기본편/jpashop/target/classes:/Users/hwang-gyuhyeog/.m2/repository/org/hibernate/hibernate-entitymanager/5.3.10.Final/hibernate-entitymanager-5.3.10.Final.jar:/Users/hwang-gyuhyeog/.m2/repository/org/jboss/logging/jboss-logging/3.3.2.Final/jboss-logging-3.3.2.Final.jar:/Users/hwang-gyuhyeog/.m2/repository/org/hibernate/hibernate-core/5.3.10.Final/hibernate-core-5.3.10.Final.jar:/Users/hwang-gyuhyeog/.m2/repository/org/javassist/javassist/3.23.2-GA/javassist-3.23.2-GA.jar:/Users/hwang-gyuhyeog/.m2/repository/antlr/antlr/2.7.7/antlr-2.7.7.jar:/Users/hwang-gyuhyeog/.m2/repository/org/jboss/jandex/2.0.5.Final/jandex-2.0.5.Final.jar:/Users/hwang-gyuhyeog/.m2/repository/com/fasterxml/classmate/1.3.4/classmate-1.3.4.jar:/Users/hwang-gyuhyeog/.m2/repository/javax/activation/javax.activation-api/1.2.0/javax.activation-api-1.2.0.jar:/Users/hwang-gyuhyeog/.m2/repository/org/dom4j/dom4j/2.1.1/dom4j-2.1.1.jar:/Users/hwang-gyuhyeog/.m2/repository/org/hibernate/common/hibernate-commons-annotations/5.0.4.Final/hibernate-commons-annotations-5.0.4.Final.jar:/Users/hwang-gyuhyeog/.m2/repository/javax/persistence/javax.persistence-api/2.2/javax.persistence-api-2.2.jar:/Users/hwang-gyuhyeog/.m2/repository/net/bytebuddy/byte-buddy/1.9.5/byte-buddy-1.9.5.jar:/Users/hwang-gyuhyeog/.m2/repository/org/jboss/spec/javax/transaction/jboss-transaction-api_1.2_spec/1.1.1.Final/jboss-transaction-api_1.2_spec-1.1.1.Final.jar:/Users/hwang-gyuhyeog/.m2/repository/com/h2database/h2/1.4.200/h2-1.4.200.jar:/Users/hwang-gyuhyeog/.m2/repository/javax/xml/bind/jaxb-api/2.3.0/jaxb-api-2.3.0.jar jpabook.jpashop.JpaMain 8월 08, 2023 10:39:56 오후 org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation INFO: HHH000204: Processing PersistenceUnitInfo [ name: hello ...] 8월 08, 2023 10:39:56 오후 org.hibernate.Version logVersion INFO: HHH000412: Hibernate Core { 5.3.10.Final } 8월 08, 2023 10:39:56 오후 org.hibernate.cfg.Environment <clinit> INFO: HHH000206: hibernate.properties not found 8월 08, 2023 10:39:57 오후 org.hibernate.annotations.common.reflection.java .JavaReflectionManager <clinit> INFO: HCANN000001: Hibernate Commons Annotations { 5.0.4.Final } 8월 08, 2023 10:39:57 오후 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!) 8월 08, 2023 10:39:57 오후 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator INFO: HHH10001005: using driver [org.h2.Driver] at URL [jdbc:h2:tcp:// localhost/~/jpashop ] 8월 08, 2023 10:39:57 오후 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator INFO: HHH10001001: Connection properties: {user=sa} 8월 08, 2023 10:39:57 오후 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator INFO: HHH10001003: Autocommit mode: false 8월 08, 2023 10:39:57 오후 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections <init> INFO: HHH000115: Hibernate connection pool size: 20 (min=1) 8월 08, 2023 10:39:57 오후 org.hibernate.dialect.Dialect <init> INFO: HHH000400: Using dialect: org.hibernate.dialect.H2Dialect Hibernate: drop table Category if exists Hibernate: drop table CATEGORY_ITEM if exists Hibernate: drop table Delivery if exists Hibernate: drop table Item if exists Hibernate: drop table Member if exists Hibernate: drop table OrderItem if exists Hibernate: drop table ORDERS if exists Hibernate: drop sequence if exists hibernate_sequence Hibernate: create sequence hibernate_sequence start with 1 increment by 1 8월 08, 2023 10:39:57 오후 org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@7f5b9db] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode. 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " drop table Category if exists" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " drop table Category if exists" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlString( SchemaDropperImpl.java:375 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlStrings( SchemaDropperImpl.java:359 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata( SchemaDropperImpl.java:241 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop( SchemaDropperImpl.java:154 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop( SchemaDropperImpl.java:126 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop( SchemaDropperImpl.java:112 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:144 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Cannot drop "CATEGORY" because "FKJIP0OR3VEMIXCCL6VX0KLUJ03" depends on it; SQL statement: drop table Category if e [90107-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:632 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.command.ddl.DropTable.prepareDrop( DropTable.java:97 ) at org.h2.command.ddl.DropTable.update( DropTable.java:121 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:576 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " drop table Delivery if exists" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " drop table Delivery if exists" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlString( SchemaDropperImpl.java:375 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlStrings( SchemaDropperImpl.java:359 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata( SchemaDropperImpl.java:241 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop( SchemaDropperImpl.java:154 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop( SchemaDropperImpl.java:126 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop( SchemaDropperImpl.java:112 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:144 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Cannot drop "DELIVERY" because "FKDBS21F1YI0COXY9Y0KXW4G9JF" depends on it; SQL statement: drop table Delivery if e [90107-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:632 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.command.ddl.DropTable.prepareDrop( DropTable.java:97 ) at org.h2.command.ddl.DropTable.update( DropTable.java:121 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:576 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " drop table Item if exists" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " drop table Item if exists" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlString( SchemaDropperImpl.java:375 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlStrings( SchemaDropperImpl.java:359 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata( SchemaDropperImpl.java:241 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop( SchemaDropperImpl.java:154 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop( SchemaDropperImpl.java:126 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop( SchemaDropperImpl.java:112 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:144 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Cannot drop "ITEM" because "FK75MRPPRV8OIGH00Y92TIBW7ID, FK2SRBE8WJBANR4VTKRSB8ATQ7O, FKQQWSWM36Y8UQOH9EMTORUOXCV, FKABGE9EQALSPCEJIJ53RAT7PJH" depends on it; SQL statement: drop table Item if e [90107-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:632 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.command.ddl.DropTable.prepareDrop( DropTable.java:97 ) at org.h2.command.ddl.DropTable.update( DropTable.java:121 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:576 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " drop table Member if exists" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " drop table Member if exists" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlString( SchemaDropperImpl.java:375 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlStrings( SchemaDropperImpl.java:359 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata( SchemaDropperImpl.java:241 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop( SchemaDropperImpl.java:154 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop( SchemaDropperImpl.java:126 ) at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop( SchemaDropperImpl.java:112 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:144 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Cannot drop "MEMBER" because "FKH0DB7KQR88ED8HQTCQW3JKCIA" depends on it; SQL statement: drop table Member if e [90107-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:632 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.command.ddl.DropTable.prepareDrop( DropTable.java:97 ) at org.h2.command.ddl.DropTable.update( DropTable.java:121 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:576 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more 8월 08, 2023 10:39:57 오후 org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@5c723f2d] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode. 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " create table Category ( id bigint not null, name varchar(255), PARENT_ID bigint, primary key (id) )" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " create table Category ( id bigint not null, name varchar(255), PARENT_ID bigint, primary key (id) )" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlString( SchemaCreatorImpl.java:440 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlStrings( SchemaCreatorImpl.java:424 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.createFromMetadata( SchemaCreatorImpl.java:315 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.performCreation( SchemaCreatorImpl.java:166 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:135 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:121 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:155 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "CATEGORY" already exists; SQL statement: create table Category ( id bigint not null, name varchar(255), PARENT_ID bigint, primary key (id) [42101-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:502 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.message.DbException.get( DbException.java:199 ) at org.h2.command.ddl.CreateTable.update( CreateTable.java:91 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:453 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " create table Delivery ( id bigint not null, city varchar(255), deliveryStatus integer, street varchar(255), zipcode varchar(255), primary key (id) )" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " create table Delivery ( id bigint not null, city varchar(255), deliveryStatus integer, street varchar(255), zipcode varchar(255), primary key (id) )" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlString( SchemaCreatorImpl.java:440 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlStrings( SchemaCreatorImpl.java:424 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.createFromMetadata( SchemaCreatorImpl.java:315 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.performCreation( SchemaCreatorImpl.java:166 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:135 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:121 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:155 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "DELIVERY" already exists; SQL statement: create table Delivery ( id bigint not null, city varchar(255), deliveryStatus integer, street varchar(255), zipcode varchar(255), primary key (id) [42101-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:502 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.message.DbException.get( DbException.java:199 ) at org.h2.command.ddl.CreateTable.update( CreateTable.java:91 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:453 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " create table Item ( DTYPE varchar(31) not null, ITEM_ID bigint not null, name varchar(255), price integer not null, stockQuantity integer not null, actor varchar(255), director varchar(255), author varchar(255), isbn varchar(255), artist varchar(255), etc varchar(255), primary key (ITEM_ID) )" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " create table Item ( DTYPE varchar(31) not null, ITEM_ID bigint not null, name varchar(255), price integer not null, stockQuantity integer not null, actor varchar(255), director varchar(255), author varchar(255), isbn varchar(255), artist varchar(255), etc varchar(255), primary key (ITEM_ID) )" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlString( SchemaCreatorImpl.java:440 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlStrings( SchemaCreatorImpl.java:424 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.createFromMetadata( SchemaCreatorImpl.java:315 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.performCreation( SchemaCreatorImpl.java:166 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:135 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:121 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:155 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "ITEM" already exists; SQL statement: create table Item ( DTYPE varchar(31) not null, ITEM_ID bigint not null, name varchar(255), price integer not null, stockQuantity integer not null, actor varchar(255), director varchar(255), author varchar(255), isbn varchar(255), artist varchar(255), etc varchar(255), primary key (ITEM_ID) [42101-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:502 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.message.DbException.get( DbException.java:199 ) at org.h2.command.ddl.CreateTable.update( CreateTable.java:91 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:453 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " create table Member ( MEMBER_ID bigint not null, city varchar(255), name varchar(255), street varchar(255), zipcode varchar(255), primary key (MEMBER_ID) )" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " create table Member ( MEMBER_ID bigint not null, city varchar(255), name varchar(255), street varchar(255), zipcode varchar(255), primary key (MEMBER_ID) )" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlString( SchemaCreatorImpl.java:440 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlStrings( SchemaCreatorImpl.java:424 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.createFromMetadata( SchemaCreatorImpl.java:315 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.performCreation( SchemaCreatorImpl.java:166 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:135 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:121 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:155 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "MEMBER" already exists; SQL statement: create table Member ( MEMBER_ID bigint not null, city varchar(255), name varchar(255), street varchar(255), zipcode varchar(255), primary key (MEMBER_ID) [42101-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:502 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.message.DbException.get( DbException.java:199 ) at org.h2.command.ddl.CreateTable.update( CreateTable.java:91 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:453 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL " alter table Category add constraint FK8tepc1qkmluodspg6tnliwhit foreign key (PARENT_ID) references Category" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL " alter table Category add constraint FK8tepc1qkmluodspg6tnliwhit foreign key (PARENT_ID) references Category" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:67 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlString( SchemaCreatorImpl.java:440 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlStrings( SchemaCreatorImpl.java:424 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.createFromMetadata( SchemaCreatorImpl.java:375 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.performCreation( SchemaCreatorImpl.java:166 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:135 ) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation( SchemaCreatorImpl.java:121 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction( SchemaManagementToolCoordinator.java:155 ) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process( SchemaManagementToolCoordinator.java:72 ) at org.hibernate.internal.SessionFactoryImpl.<init>( SessionFactoryImpl.java:310 ) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build ( SessionFactoryBuilderImpl.java:467 ) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build ( EntityManagerFactoryBuilderImpl.java:939 ) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory( HibernatePersistenceProvider.java:56 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:79 ) at javax.persistence.Persistence.createEntityManagerFactory( Persistence.java:54 ) at jpabook.jpashop.JpaMain.main( JpaMain.java:14 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Constraint "FK8TEPC1QKMLUODSPG6TNLIWHIT" already exists; SQL statement: alter table Category add constraint FK8tepc1qkmluodspg6tnliwhit foreign key (PARENT_ID) references Cat [90045-214] at org.h2.message.DbException.getJdbcSQLException( DbException.java:632 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:477 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.message.DbException.get( DbException.java:199 ) at org.h2.command.ddl.AlterTableAddConstraint.tryUpdate( AlterTableAddConstraint.java:109 ) at org.h2.command.ddl.AlterTableAddConstraint.update( AlterTableAddConstraint.java:72 ) at org.h2.command.ddl.AlterTable.update( AlterTable.java:46 ) at org.h2.command.CommandContainer.update( CommandContainer.java:169 ) at org.h2.command.Command.executeUpdate( Command.java:252 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:408 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:834 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:576 ) at org.h2.engine.SessionRemote.done( SessionRemote.java:611 ) at org.h2.command.CommandRemote.executeUpdate( CommandRemote.java:237 ) at org.h2.jdbc.JdbcStatement.executeInternal( JdbcStatement.java:228 ) at org.h2.jdbc.JdbcStatement.execute( JdbcStatement.java:201 ) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept( GenerationTargetToDatabase.java:54 ) ... 15 more Hibernate: create table Category ( id bigint not null, name varchar(255), PARENT_ID bigint, primary key (id) ) Hibernate: create table CATEGORY_ITEM ( CATEGORY_ID bigint not null, ITEM_ID bigint not null ) Hibernate: create table Delivery ( id bigint not null, city varchar(255), deliveryStatus integer, street varchar(255), zipcode varchar(255), primary key (id) ) Hibernate: create table Item ( DTYPE varchar(31) not null, ITEM_ID bigint not null, name varchar(255), price integer not null, stockQuantity integer not null, actor varchar(255), director varchar(255), author varchar(255), isbn varchar(255), artist varchar(255), etc varchar(255), primary key (ITEM_ID) ) Hibernate: create table Member ( MEMBER_ID bigint not null, city varchar(255), name varchar(255), street varchar(255), zipcode varchar(255), primary key (MEMBER_ID) ) Hibernate: create table OrderItem ( ORDER_ITEM_ID bigint not null, ITEM_ID bigint, ORDER_ID bigint, primary key (ORDER_ITEM_ID) ) Hibernate: create table ORDERS ( ORDER_ID bigint not null, orderDate timestamp, status varchar(255), DELIVERY_ID bigint, MEMBER_ID bigint, primary key (ORDER_ID) ) Hibernate: alter table Category add constraint FK8tepc1qkmluodspg6tnliwhit foreign key (PARENT_ID) references Category Hibernate: alter table CATEGORY_ITEM add constraint FKf1uerpnmn49vl1spbbplgxaun foreign key (ITEM_ID) references Item Hibernate: alter table CATEGORY_ITEM add constraint FKjip0or3vemixccl6vx0kluj03 foreign key (CATEGORY_ID) references Category Hibernate: alter table OrderItem add constraint FKabge9eqalspcejij53rat7pjh foreign key (ITEM_ID) references Item Hibernate: alter table OrderItem add constraint FKk7lmf97wukpquk6d8blxy5neq foreign key (ORDER_ID) references ORDERS Hibernate: alter table ORDERS add constraint FKdbs21f1yi0coxy9y0kxw4g9jf foreign key (DELIVERY_ID) references Delivery Hibernate: alter table ORDERS add constraint FKh0db7kqr88ed8hqtcqw3jkcia foreign key (MEMBER_ID) references Member 8월 08, 2023 10:39:57 오후 org.hibernate.tool.schema.internal.SchemaCreatorImpl applyImportSources INFO: HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptSourceInputNonExistentImpl@30f74e79' Hibernate: call next value for hibernate_sequence Hibernate: /* insert jpabook.jpashop.domain.Book */ insert into Item (name, price, stockQuantity, author, isbn, DTYPE, ITEM_ID) values (?, ?, ?, ?, ?, 'Book', ?) 8월 08, 2023 10:39:57 오후 org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions WARN: SQL Error: 23505, SQLState: 23505 8월 08, 2023 10:39:57 오후 org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions ERROR: Unique index or primary key violation: "PRIMARY KEY ON PUBLIC.ITEM(ITEM_ID) ( /* key:1 */ 'Book', CAST(1 AS BIGINT), 'dd', 0, 0, NULL, NULL, 'abc', NULL, NULL, NULL)"; SQL statement: /* insert jpabook.jpashop.domain.Book */ insert into Item (name, price, stockQuantity, author, isbn, DTYPE, I [23505-200] 8월 08, 2023 10:39:57 오후 org.hibernate.internal.ExceptionMapperStandardImpl mapManagedFlushFailure ERROR: HHH000346: Error during managed flush [org.hibernate.exception.ConstraintViolationException: could not execute statement] 8월 08, 2023 10:39:57 오후 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl stop INFO: HHH10001008: Cleaning up connection pool [jdbc:h2:tcp:// localhost/~/jpashop ] Process finished with exit code 0
학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요. 1. 강의 내용과 관련된 질문을 남겨주세요. 2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요. (자주 하는 질문 링크: https://bit.ly/3fX6ygx) 3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요. (질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG) 질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요. ========================================= [질문 템플릿] 1. 강의 내용과 관련된 질문인가요? ( 예 /아니오) 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? ( 예 /아니오) 3. 질문 잘하기 메뉴얼을 읽어보셨나요? ( 예 /아니오) [질문 내용] 여기에 질문 내용을 남겨주세요. 안녕하세요. 강의 내에서 스프링 없이 테스트 코드를 짜는 것이 좋다고 하신 것을 보고 실제로 테스트 코드는 스프링을 의존하지 않고 짜는 것이 무엇인지 궁금해졌습니다. 실제로 강의에서 작성하는 내용 중에, 어느 부분이 스프링에 의존해서 테스트를 한 것인지, 또한 그러한 스프링 의존 테스트를 순수 자바 기반의 테스트로 바꾸며 어떤 식으로 나오게 될지 궁금합니다. 감사합니다.
학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요. 1. 강의 내용과 관련된 질문을 남겨주세요. 2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요. (자주 하는 질문 링크: https://bit.ly/3fX6ygx) 3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요. (질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG) 질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요. ========================================= [질문 템플릿] 1. 강의 내용과 관련된 질문인가요? (예/아니오) 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오) 3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오) [질문 내용] 여기에 질문 내용을 남겨주세요. model.addAttribute 하고 안에 값 넣었는데 이게 안먹네요 어떻게해야 해결할 수 있을까요? import 구문 따로 넣는게 있나요?
변수 명은 편한대로 변경했습니다. numberOfPageForGroup = currentGroup === lastGroup ? totalPages % limit : limit; 처음 알려주신 코드 로직 그대로 사용하면 totalPages가 limit으로 나누어 떨어져서 나머지가 0인 경우 버그가 발생합니다. const numberOfPageForGroup = currentGroup === lastGroup && totalPages % limit !== 0 ? totalPages % limit : limit; 나누어 떨어지는 경우도 처리해줘야 정상 작동합니다.
[질문 내용] 여기에 질문 내용을 남겨주세요. 1. Tasks - other에 compileQuerydsl이 없어서 compileJava를 눌러서 했는데 괜찮은지 ?? 2.강사님과 다르게 build /generated 이렇게 생성되어도 문제가 없는지? 저런식으로 Q파일들이 생성되었는데 import가 안되고 사용이 안되는 이유 알려주시면 감사하겠습니다.
1. 강의 내용과 관련된 질문인가요? 예 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 예 3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예 MemberServiceIntegrationTest 에서 회원가입을 run하는 과정중에, 처음에는 NullPointerException 이 뜨다가, 코드수정만 했는데 이제는 아얘 실행조차 안되고 다음과 같이 오류가 뜹니다 __________________ 위의 오류를 해결하려고 아래와 같이 src/java/main을 소스루트로 지정했습니다 캐쉬삭제도 해보고 이것저것 해봤는데 실행조차 안됩니다 어떻게 고쳐야하나요 ... ㅠㅠ 도와주세요 ..
Java 에서 Final 만 사용할 수 있는게 외부 변수가 메모리에서 해제 되었을 경우, 가비지를 참조할 수 있는 것을 방지하기 위해서로 알고 있는데 코틀린은 이게 가능한게 아예 메모리를 통째로 떠와서 그런걸까요? ㅎㅎ 강의 영상에서 포획한다 라고 표현하신게 그런 의미 같아요!
안녕하세요. 스크립트는 아래와 같이 작성하였으며, 콘솔에는 3-12.AsyncAwait.html:20 Uncaught (in promise) TypeError: data is not iterable at calculateSum 이라는 오류가 나왔습니다. <!DOCTYPE html> <html> <head> <title>Document</title> </head> <body> <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script> <script> var url ="https://74f8c451-bcda-46f0-820b-f63caee12b28.mock.pstmn.io/productList"; async function getData2(){ return (await axios.get(url)).data; } async function calculateSum(){ var data = await getData2(); var total = 0; for(var item of data){ total += item.price; } console.log(total); } calculateSum(); </script> </body> </html> 어디가 잘못된걸까요... 강의랑 똑같이 작성을 한거같은데..
학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요. 1. 강의 내용과 관련된 질문을 남겨주세요. 2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요. (자주 하는 질문 링크: https://bit.ly/3fX6ygx) 3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요. (질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG) 질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요. ========================================= [질문 템플릿] 1. 강의 내용과 관련된 질문인가요? (예/아니오) 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오) 3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오) [질문 내용] "package hello.hellospring.aop; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.springframework.stereotype.Component; @Component @Aspect public class TimeTraceAop { @Around("execution(* hello.helloSpring..*(..))") public Object execute(ProceedingJoinPoint joinPoint) throws Throwable { long start = System. currentTimeMillis (); System. out .println("START : " + joinPoint.toString()); try { return joinPoint.proceed(); } finally { long finish = System. currentTimeMillis (); long timeMs = finish - start; System. out .println("END : " + joinPoint.toString()+ " " + timeMs + "ms"); } } }" TimeTraceAop 클래스를 작성한 이후에 실행을 시켜보아도 수업처럼 START END 부분이실행되지 않습니다. 단순 스프링 실행화면만 보이는데 어디가 문제일까요?
안녕하세요 queryDsl의 기본 문법에 대해서 듣고 있는데요. 현재 기준, fetchResults(), fetchCount() 가 deprecated 되었네요.(자바11, springboot 2.7 버전에 맞는 queryDsl) 강의 끝부분에서 말씀하신, 복잡한 페이징 & 쿼리 부분에서는 coun와 select 쿼리가 다르니까 따로 작성해서 해야된다는 말씀 것과 연관되어서 그런 것 맞을까요? 그러면 @Deprecated 된 현재는 fetchResults(), fetchCount() 는 사용을 지양하고 별개의 쿼리로 각각의 값들을 얻어 조합해서 response 해주는 것이 맞죠?
학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요. 1. 강의 내용과 관련된 질문을 남겨주세요. 2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요. (자주 하는 질문 링크: https://bit.ly/3fX6ygx) 3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요. (질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG) 질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요. ========================================= [질문 템플릿] 1. 강의 내용과 관련된 질문인가요? (예/아니오) 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오) 3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오) [질문 내용] 여기에 질문 내용을 남겨주세요. 코드를 모두 정상적으로 작성하였는데 Cannot snapshot C:\Users\이름\OneDrive\바탕 화면\App\Programming\study\inflearn\Spring\forBeginner\hello-spring\build\test-results\test\binary\output.bin: not a regular file 이런 오류가 뜹니다.
