commit 7ae7f56443bb7d85e55f5702a80567ad0ecf07da Author: ThePotioner Date: Tue Oct 14 15:20:56 2025 +0900 init diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b63da45 --- /dev/null +++ b/.gitignore @@ -0,0 +1,42 @@ +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### IntelliJ IDEA ### +.idea/modules.xml +.idea/jarRepositories.xml +.idea/compiler.xml +.idea/libraries/ +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### Eclipse ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ + +### Mac OS ### +.DS_Store \ No newline at end of file diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..c3f502a --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,8 @@ +# 디폴트 무시된 파일 +/shelf/ +/workspace.xml +# 에디터 기반 HTTP 클라이언트 요청 +/httpRequests/ +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml diff --git a/.idea/codeStyles/codeStyleConfig.xml b/.idea/codeStyles/codeStyleConfig.xml new file mode 100644 index 0000000..a55e7a1 --- /dev/null +++ b/.idea/codeStyles/codeStyleConfig.xml @@ -0,0 +1,5 @@ + + + + \ No newline at end of file diff --git a/.idea/discord.xml b/.idea/discord.xml new file mode 100644 index 0000000..104c42f --- /dev/null +++ b/.idea/discord.xml @@ -0,0 +1,14 @@ + + + + + \ No newline at end of file diff --git a/.idea/gradle.xml b/.idea/gradle.xml new file mode 100644 index 0000000..2e197de --- /dev/null +++ b/.idea/gradle.xml @@ -0,0 +1,18 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..5ef3bc0 --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,10 @@ + + + + + + + + + + \ No newline at end of file diff --git a/build.gradle b/build.gradle new file mode 100644 index 0000000..8cc4d28 --- /dev/null +++ b/build.gradle @@ -0,0 +1,33 @@ +plugins { + id 'java' + id 'org.springframework.boot' version '3.0.2' + id 'io.spring.dependency-management' version '1.1.0' +} + +group = 'dev.ptnr' +version = '1.0.0' +sourceCompatibility = '17' + +repositories { + mavenCentral() +} + +dependencies { + // Spring Boot Starter (Web, Test) + implementation 'org.springframework.boot:spring-boot-starter-web' + testImplementation 'org.springframework.boot:spring-boot-starter-test' + + // Spring Data JPA + implementation 'org.springframework.boot:spring-boot-starter-data-jpa' + + // In-Memory DB (H2) + runtimeOnly 'com.h2database:h2' + + // Lombok + compileOnly 'org.projectlombok:lombok:1.18.32' + annotationProcessor 'org.projectlombok:lombok:1.18.32' +} + +test { + useJUnitPlatform() +} \ No newline at end of file diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..249e583 Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..2ab8ea3 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +#Wed Oct 08 14:32:33 KST 2025 +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100644 index 0000000..1b6c787 --- /dev/null +++ b/gradlew @@ -0,0 +1,234 @@ +#!/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/master/subprojects/plugins/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 + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&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: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$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 + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# 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/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,89 @@ +@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=. +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%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +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%"=="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! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/settings.gradle b/settings.gradle new file mode 100644 index 0000000..88463bc --- /dev/null +++ b/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'frontalobe-be' \ No newline at end of file diff --git a/src/main/java/dev/ptnr/frontalobebackend/FrontalobeBackendApplication.java b/src/main/java/dev/ptnr/frontalobebackend/FrontalobeBackendApplication.java new file mode 100644 index 0000000..5af68be --- /dev/null +++ b/src/main/java/dev/ptnr/frontalobebackend/FrontalobeBackendApplication.java @@ -0,0 +1,11 @@ +package dev.ptnr.frontalobebackend; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class FrontalobeBackendApplication { + public static void main(String[] args) { + SpringApplication.run(FrontalobeBackendApplication.class, args); + } +} diff --git a/src/main/java/dev/ptnr/frontalobebackend/Member.java b/src/main/java/dev/ptnr/frontalobebackend/Member.java new file mode 100644 index 0000000..55e29d6 --- /dev/null +++ b/src/main/java/dev/ptnr/frontalobebackend/Member.java @@ -0,0 +1,24 @@ +package dev.ptnr.frontalobebackend; + +import jakarta.persistence.*; +import lombok.AccessLevel; +import lombok.AllArgsConstructor; +import lombok.Getter; +import lombok.NoArgsConstructor; + +@NoArgsConstructor(access = AccessLevel.PROTECTED) +@AllArgsConstructor +@Getter +@Entity +// Data Access Object (DAO) - Database의 구조를 담고 있는 객체 +public class Member { + // DB Table의 `id` 컬럼과 매칭 + @Id + @GeneratedValue(strategy = GenerationType.IDENTITY) + @Column(name = "id", updatable = false) + private Long id; + + // DB Table의 `name` 컬럼과 매칭 + @Column(name = "name", nullable = false) + private String name; +} diff --git a/src/main/java/dev/ptnr/frontalobebackend/MemberRepository.java b/src/main/java/dev/ptnr/frontalobebackend/MemberRepository.java new file mode 100644 index 0000000..dcf70c6 --- /dev/null +++ b/src/main/java/dev/ptnr/frontalobebackend/MemberRepository.java @@ -0,0 +1,9 @@ +package dev.ptnr.frontalobebackend; + +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Repository; + +@Repository +public interface MemberRepository extends JpaRepository { + +} diff --git a/src/main/java/dev/ptnr/frontalobebackend/TestController.java b/src/main/java/dev/ptnr/frontalobebackend/TestController.java new file mode 100644 index 0000000..e8891e1 --- /dev/null +++ b/src/main/java/dev/ptnr/frontalobebackend/TestController.java @@ -0,0 +1,20 @@ +package dev.ptnr.frontalobebackend; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RestController; + +import java.util.List; + +// Controller - 프레젠테이션 계층 +@RestController +public class TestController { + @Autowired // TestService Bean 주입 + TestService testService; + + @GetMapping("/test") + public List getAllMembers() { + List members = testService.getAllMembers(); + return members; + } +} diff --git a/src/main/java/dev/ptnr/frontalobebackend/TestService.java b/src/main/java/dev/ptnr/frontalobebackend/TestService.java new file mode 100644 index 0000000..8c63a09 --- /dev/null +++ b/src/main/java/dev/ptnr/frontalobebackend/TestService.java @@ -0,0 +1,17 @@ +package dev.ptnr.frontalobebackend; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.stereotype.Service; + +import java.util.List; + +// Service - 비즈니스 계층 +@Service +public class TestService { + @Autowired + MemberRepository memberRepository; + + public List getAllMembers() { + return memberRepository.findAll(); + } +} diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml new file mode 100644 index 0000000..ef1e76c --- /dev/null +++ b/src/main/resources/application.yml @@ -0,0 +1,10 @@ +spring: + jpa: + # Check Query Transaction + show-sql: true + properties: + hibernate: + format_sql: true + + # Run data.sql after generate DB Tables + defer-datasource-initialization: true diff --git a/src/main/resources/data.sql b/src/main/resources/data.sql new file mode 100644 index 0000000..c390e44 --- /dev/null +++ b/src/main/resources/data.sql @@ -0,0 +1,3 @@ +INSERT INTO member (id, name) VALUES (1, 'name a'); +INSERT INTO member (id, name) VALUES (2, 'name b'); +INSERT INTO member (id, name) VALUES (3, 'name c'); \ No newline at end of file diff --git a/src/test/java/JUnitCycleTest.java b/src/test/java/JUnitCycleTest.java new file mode 100644 index 0000000..eef800a --- /dev/null +++ b/src/test/java/JUnitCycleTest.java @@ -0,0 +1,37 @@ +import org.junit.jupiter.api.*; + +public class JUnitCycleTest { + @BeforeAll // 전체 테스트를 실행하기 전 1회 실행 - static으로 선언 + static void beforeAll() { + System.out.println("@BeforeAll"); + } + + @BeforeEach // 테스트 케이스 시작 전마다 실행 + public void beforeEach() { + System.out.println("@BeforeEach"); + } + + @Test + public void test1() { + System.out.println("Test 1"); + } + @Test + public void test2() { + System.out.println("Test 2"); + } + @Test + public void test3() { + System.out.println("Test 3"); + } + + @AfterAll // 전체 테스트를 실행 후 1회 실행 - static으로 선언 + static void afterAll() { + System.out.println("@AfterAll"); + } + + @AfterEach // 테스트 케이스 종료 전마다 실행 + void afterEach() { + System.out.println("@AfterEach"); + } +} + diff --git a/src/test/java/JUnitTest.java b/src/test/java/JUnitTest.java new file mode 100644 index 0000000..fb73035 --- /dev/null +++ b/src/test/java/JUnitTest.java @@ -0,0 +1,17 @@ +import org.assertj.core.api.Assertions; +import org.junit.jupiter.api.DisplayName; +import org.junit.jupiter.api.Test; + +public class JUnitTest { + // DisplayName, Test 어노테이션으로 테스트명, 테스트 메서드임을 표기함 + @DisplayName("1 + 2 equals 3") + @Test + public void junitTest() { + int a = 1; + int b = 2; + int sum = 3; + + // 값이 같은지 확인 - AssertJ의 Assertions를 통해 가독성을 향상시킴 + Assertions.assertThat(a + b).isEqualTo(sum); + } +} diff --git a/src/test/java/dev/ptnr/frontalobebackend/TestControllerTest.java b/src/test/java/dev/ptnr/frontalobebackend/TestControllerTest.java new file mode 100644 index 0000000..3fbcdd1 --- /dev/null +++ b/src/test/java/dev/ptnr/frontalobebackend/TestControllerTest.java @@ -0,0 +1,54 @@ +package dev.ptnr.frontalobebackend; + +import org.junit.jupiter.api.*; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.http.MediaType; +import org.springframework.test.web.servlet.*; +import org.springframework.test.web.servlet.setup.MockMvcBuilders; +import org.springframework.web.context.WebApplicationContext; + +import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*; +import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*; + + +@SpringBootTest // 테스트용 애플리케이션 컨텍스트 생성 +@AutoConfigureMockMvc // MockMvc 생성 및 자동 구성 +class TestControllerTest { + @Autowired + protected MockMvc mockMvc; + + @Autowired + private WebApplicationContext context; + + @Autowired + private MemberRepository memberRepository; + + @BeforeEach + public void mockMvcSetup() { + this.mockMvc = MockMvcBuilders.webAppContextSetup(context).build(); + } + + @AfterEach + public void cleanup() { + memberRepository.deleteAll(); + } + + @DisplayName("Test `getAllMembers()` Transaction") + @Test + void getAllMembers() throws Exception { + // given - 테스트 실행 준비 단계 + final String URL = "/test"; + Member savedMember = memberRepository.save(new Member(1L, "heavycaffeiner")); + + // when - 테스트 진행 단계 + final ResultActions result = mockMvc.perform(get(URL).accept(MediaType.APPLICATION_JSON)); + + // then - 테스트 결과 검증 단계 + result + .andExpect(status().isOk()) + .andExpect(jsonPath("$[0].id").value(savedMember.getId())) + .andExpect(jsonPath("$[0].name").value(savedMember.getName())); + } +} \ No newline at end of file