diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..13566b8 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,8 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Editor-based HTTP Client requests +/httpRequests/ +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml diff --git a/.idea/Backend_Beginner-Database.iml b/.idea/Backend_Beginner-Database.iml new file mode 100644 index 0000000..d6ebd48 --- /dev/null +++ b/.idea/Backend_Beginner-Database.iml @@ -0,0 +1,9 @@ + + + + + + + + + \ No newline at end of file diff --git a/.idea/gradle.xml b/.idea/gradle.xml new file mode 100644 index 0000000..42431a1 --- /dev/null +++ b/.idea/gradle.xml @@ -0,0 +1,16 @@ + + + + + + \ No newline at end of file diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml new file mode 100644 index 0000000..fdc392f --- /dev/null +++ b/.idea/jarRepositories.xml @@ -0,0 +1,20 @@ + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..5242cde --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,10 @@ + + + + + + + + + + \ No newline at end of file diff --git a/.idea/modules.xml b/.idea/modules.xml new file mode 100644 index 0000000..bbda8d8 --- /dev/null +++ b/.idea/modules.xml @@ -0,0 +1,8 @@ + + + + + + + + \ No newline at end of file diff --git a/.idea/vcs.xml b/.idea/vcs.xml new file mode 100644 index 0000000..35eb1dd --- /dev/null +++ b/.idea/vcs.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/Backend_Beginner2/.gitignore b/Backend_Beginner2/.gitignore new file mode 100644 index 0000000..c2065bc --- /dev/null +++ b/Backend_Beginner2/.gitignore @@ -0,0 +1,37 @@ +HELP.md +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ diff --git a/Backend_Beginner2/build.gradle b/Backend_Beginner2/build.gradle new file mode 100644 index 0000000..0e1c010 --- /dev/null +++ b/Backend_Beginner2/build.gradle @@ -0,0 +1,31 @@ +plugins { + id 'java' + id 'org.springframework.boot' version '3.3.1' + id 'io.spring.dependency-management' version '1.1.5' +} + +group = 'com.example' +version = '0.0.1-SNAPSHOT' + +java { + toolchain { + languageVersion = JavaLanguageVersion.of(17) + } +} + +repositories { + mavenCentral() +} + +dependencies { + implementation 'org.springframework.boot:spring-boot-starter-data-jpa' + implementation 'org.springframework.boot:spring-boot-starter-web' + developmentOnly 'org.springframework.boot:spring-boot-devtools' + runtimeOnly 'com.h2database:h2' + testImplementation 'org.springframework.boot:spring-boot-starter-test' + testRuntimeOnly 'org.junit.platform:junit-platform-launcher' +} + +tasks.named('test') { + useJUnitPlatform() +} diff --git a/Backend_Beginner2/gradle/wrapper/gradle-wrapper.jar b/Backend_Beginner2/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..e644113 Binary files /dev/null and b/Backend_Beginner2/gradle/wrapper/gradle-wrapper.jar differ diff --git a/Backend_Beginner2/gradle/wrapper/gradle-wrapper.properties b/Backend_Beginner2/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..a441313 --- /dev/null +++ b/Backend_Beginner2/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,7 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip +networkTimeout=10000 +validateDistributionUrl=true +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/Backend_Beginner2/gradlew b/Backend_Beginner2/gradlew new file mode 100755 index 0000000..b740cf1 --- /dev/null +++ b/Backend_Beginner2/gradlew @@ -0,0 +1,249 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) +APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + if ! command -v java >/dev/null 2>&1 + then + die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Collect all arguments for the java command: +# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, +# and any embedded shellness will be escaped. +# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be +# treated as '${Hostname}' itself on the command line. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/Backend_Beginner2/gradlew.bat b/Backend_Beginner2/gradlew.bat new file mode 100644 index 0000000..7101f8e --- /dev/null +++ b/Backend_Beginner2/gradlew.bat @@ -0,0 +1,92 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/Backend_Beginner2/settings.gradle b/Backend_Beginner2/settings.gradle new file mode 100644 index 0000000..8fd307e --- /dev/null +++ b/Backend_Beginner2/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'Backend_Beginner2' diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/BackendBeginner2Application.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/BackendBeginner2Application.java new file mode 100644 index 0000000..efa9b5c --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/BackendBeginner2Application.java @@ -0,0 +1,13 @@ +package com.example.Backend_Beginner2; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class BackendBeginner2Application { + + public static void main(String[] args) { + SpringApplication.run(BackendBeginner2Application.class, args); + } + +} diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/controller/StudentController.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/controller/StudentController.java new file mode 100644 index 0000000..bf1952c --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/controller/StudentController.java @@ -0,0 +1,38 @@ +package com.example.Backend_Beginner2.controller; + +import com.example.Backend_Beginner2.domain.Enrollment; +import com.example.Backend_Beginner2.service.StudentService; +import org.springframework.http.HttpStatus; +import org.springframework.http.ResponseEntity; +import org.springframework.web.bind.annotation.*; + +import java.util.List; + +@RestController +@RequestMapping("/students") +public class StudentController { + + private final StudentService studentService; + + public StudentController(StudentService studentService) { + this.studentService = studentService; + } + + @GetMapping("/{studentId}/enrollments") + public ResponseEntity> getEnrollments(@PathVariable int studentId) { + List enrollments = studentService.getEnrollments(studentId); + return ResponseEntity.ok(enrollments); + } + + @PostMapping("/{studentId}/enrollments/{courseId}") + public ResponseEntity enrollStudent(@PathVariable int studentId, @PathVariable int courseId) { + Enrollment enrollment = studentService.enrollStudent(studentId, courseId); + return new ResponseEntity<>(enrollment, HttpStatus.CREATED); + } + + @DeleteMapping("/enrollments/{enrollmentId}") + public ResponseEntity deleteEnrollment(@PathVariable int enrollmentId) { + studentService.deleteEnrollment(enrollmentId); + return new ResponseEntity<>(HttpStatus.NO_CONTENT); + } +} diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Course.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Course.java new file mode 100644 index 0000000..c1d7e26 --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Course.java @@ -0,0 +1,19 @@ +package com.example.Backend_Beginner2.domain; + +import jakarta.persistence.*; +import java.util.List; + +@Entity +public class Course { + @Id + @GeneratedValue(strategy = GenerationType.IDENTITY) + private int courseId; + + private String courseName; + private String instructor; + private int score; + + @OneToMany(mappedBy = "course", cascade = CascadeType.ALL, orphanRemoval = true) + private List enrollments; +} + diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Enrollment.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Enrollment.java new file mode 100644 index 0000000..d48b6ea --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Enrollment.java @@ -0,0 +1,33 @@ +package com.example.Backend_Beginner2.domain; + +import jakarta.persistence.*; +import java.util.Date; + +@Entity +public class Enrollment { + @Id + @GeneratedValue(strategy = GenerationType.IDENTITY) + private int enrollmentId; + + @ManyToOne + @JoinColumn(name = "student_id") + private Student student; + + @ManyToOne + @JoinColumn(name = "course_id") + private Course course; + + private Date enrollmentDate; + + public Enrollment() {} + + public void setStudent(Student student) { + this.student = student; + } + public void setCourse(Course course) { + this.course = course; + } + public void setEnrollment_date(Date enrollmentDate) { + this.enrollmentDate = enrollmentDate; + } +} diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Student.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Student.java new file mode 100644 index 0000000..3dc9989 --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/domain/Student.java @@ -0,0 +1,19 @@ +package com.example.Backend_Beginner2.domain; + +import jakarta.persistence.*; +import java.util.Date; +import java.util.List; + +@Entity +public class Student { + @Id + @GeneratedValue(strategy = GenerationType.IDENTITY) + private int studentId; + + private String name; + private Date birthDate; + private String email; + + @OneToMany(mappedBy = "student", cascade = CascadeType.ALL, orphanRemoval = true) + private List enrollments; +} diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/CourseRepository.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/CourseRepository.java new file mode 100644 index 0000000..6303526 --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/CourseRepository.java @@ -0,0 +1,9 @@ +package com.example.Backend_Beginner2.repository; + +import com.example.Backend_Beginner2.domain.Course; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Repository; + +@Repository +public interface CourseRepository extends JpaRepository { +} diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/EnrollmentRepository.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/EnrollmentRepository.java new file mode 100644 index 0000000..d66c493 --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/EnrollmentRepository.java @@ -0,0 +1,12 @@ +package com.example.Backend_Beginner2.repository; + +import com.example.Backend_Beginner2.domain.Enrollment; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Repository; + +import java.util.List; + +@Repository +public interface EnrollmentRepository extends JpaRepository { + List findByStudentStudentId(int studentId); +} diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/StudentRepository.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/StudentRepository.java new file mode 100644 index 0000000..29b186f --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/repository/StudentRepository.java @@ -0,0 +1,9 @@ +package com.example.Backend_Beginner2.repository; + +import com.example.Backend_Beginner2.domain.Student; +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Repository; + +@Repository +public interface StudentRepository extends JpaRepository { +} diff --git a/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/service/StudentService.java b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/service/StudentService.java new file mode 100644 index 0000000..eeb3635 --- /dev/null +++ b/Backend_Beginner2/src/main/java/com/example/Backend_Beginner2/service/StudentService.java @@ -0,0 +1,51 @@ +package com.example.Backend_Beginner2.service; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import com.example.Backend_Beginner2.domain.Course; +import com.example.Backend_Beginner2.domain.Enrollment; +import com.example.Backend_Beginner2.domain.Student; +import com.example.Backend_Beginner2.repository.CourseRepository; +import com.example.Backend_Beginner2.repository.EnrollmentRepository; +import com.example.Backend_Beginner2.repository.StudentRepository; +import org.springframework.stereotype.Service; + +import java.util.List; +import java.util.Date; + +@Service +public class StudentService { + private static final Logger logger = LoggerFactory.getLogger(StudentService.class); + + private final StudentRepository studentRepository; + private final CourseRepository courseRepository; + private final EnrollmentRepository enrollmentRepository; + + public StudentService(StudentRepository studentRepository, CourseRepository courseRepository, EnrollmentRepository enrollmentRepository) { + this.studentRepository = studentRepository; + this.courseRepository = courseRepository; + this.enrollmentRepository = enrollmentRepository; + } + + public List getEnrollments(int studentId) { + return enrollmentRepository.findByStudentStudentId(studentId); + } + + public Enrollment enrollStudent(int studentId, int courseId) { + Student student = studentRepository.findById(studentId).orElseThrow(); + Course course = courseRepository.findById(courseId).orElseThrow(); + + Enrollment enrollment = new Enrollment(); + enrollment.setStudent(student); + enrollment.setCourse(course); + enrollment.setEnrollment_date(new Date()); + + Enrollment savedEnrollment = enrollmentRepository.save(enrollment); + logger.info("Created enrollment: {}", savedEnrollment); + return savedEnrollment; + } + + public void deleteEnrollment(int enrollmentId) { + enrollmentRepository.deleteById(enrollmentId); + } +} diff --git a/Backend_Beginner2/src/main/resources/application.properties b/Backend_Beginner2/src/main/resources/application.properties new file mode 100644 index 0000000..b0326a5 --- /dev/null +++ b/Backend_Beginner2/src/main/resources/application.properties @@ -0,0 +1,18 @@ +spring.application.name=Backend_Beginner2 + +spring.h2.console.enabled=true +spring.h2.console.path=/h2 + +spring.datasource.url=jdbc:h2:mem:testdb +spring.datasource.driverClassName=org.h2.Driver +spring.datasource.username=sa +spring.datasource.password= + +spring.jpa.hibernate.ddl-auto=update +spring.jpa.database-platform=org.hibernate.dialect.H2Dialect + +spring.sql.init.mode=always +spring.sql.init.continue-on-error=true + +spring.sql.init.schema-locations=classpath:schema.sql +spring.sql.init.data-locations=classpath:data.sql \ No newline at end of file diff --git a/Backend_Beginner2/src/main/resources/data.sql b/Backend_Beginner2/src/main/resources/data.sql new file mode 100644 index 0000000..b9a5363 --- /dev/null +++ b/Backend_Beginner2/src/main/resources/data.sql @@ -0,0 +1,8 @@ +INSERT INTO student (name, birth_date, email) VALUES ('saechan', '1998-01-11', 'tpcksrns@naver.com'); +INSERT INTO student (name, birth_date, email) VALUES ('park', '1999-05-15', 'tpcksrns@gmail.com'); + +INSERT INTO course (course_name, instructor, score) VALUES ('database', 'HS.JO', 100); +INSERT INTO course (course_name, instructor, score) VALUES ('JPA', 'HS.JO', 100); +INSERT INTO course (course_name, instructor, score) VALUES ('network', 'MJ.KIM', 100); +INSERT INTO course (course_name, instructor, score) VALUES ('java', 'MJ.KIM', 100); +INSERT INTO course (course_name, instructor, score) VALUES ('object', 'MJ.KIM', 100); \ No newline at end of file diff --git a/Backend_Beginner2/src/main/resources/schema.sql b/Backend_Beginner2/src/main/resources/schema.sql new file mode 100644 index 0000000..5425e68 --- /dev/null +++ b/Backend_Beginner2/src/main/resources/schema.sql @@ -0,0 +1,13 @@ +CREATE TABLE IF NOT EXISTS student ( + student_id INT AUTO_INCREMENT PRIMARY KEY, + name VARCHAR(255) NOT NULL, + birth_date DATE, + email VARCHAR(255) NOT NULL +); + +CREATE TABLE IF NOT EXISTS course ( + course_id INT AUTO_INCREMENT PRIMARY KEY, + course_name VARCHAR(255) NOT NULL, + instructor VARCHAR(255), + score INT +); diff --git a/Backend_Beginner2/src/test/java/com/example/Backend_Beginner2/BackendBeginner2ApplicationTests.java b/Backend_Beginner2/src/test/java/com/example/Backend_Beginner2/BackendBeginner2ApplicationTests.java new file mode 100644 index 0000000..fb9e066 --- /dev/null +++ b/Backend_Beginner2/src/test/java/com/example/Backend_Beginner2/BackendBeginner2ApplicationTests.java @@ -0,0 +1,13 @@ +package com.example.Backend_Beginner2; + +import org.junit.jupiter.api.Test; +import org.springframework.boot.test.context.SpringBootTest; + +@SpringBootTest +class BackendBeginner2ApplicationTests { + + @Test + void contextLoads() { + } + +}