.gitignore

@@ -1,26 +1,37 @@
-# ---> Java
-# Compiled class file
-*.class
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
 
-# Log file
-*.log
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
 
-# BlueJ files
-*.ctxt
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
 
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.jar
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
-
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
-replay_pid*
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
 
+### VS Code ###
+.vscode/

README.md

@@ -1,2 +0,0 @@
-# PIbd-22_Artamonova_T.V._IP
-

build.gradle

@@ -0,0 +1,26 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.0.2'
+	id 'io.spring.dependency-management' version '1.1.0'
+}
+
+group = 'ru.ulstu.is'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = '17'
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'com.h2database:h2:2.1.210'
+	implementation group: 'org.springdoc', name: 'springdoc-openapi-ui', version: '1.6.5'
+	implementation 'org.hibernate.validator:hibernate-validator'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,240 @@
+#!/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 "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# 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 "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,91 @@
+@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% equ 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% 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

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'sbapp'

src/main/java/ru/ulstu/is/sbapp/SbappApplication.java

@@ -0,0 +1,13 @@
+package ru.ulstu.is.sbapp;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+
+public class SbappApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SbappApplication.class, args);
+	}
+}

src/main/java/ru/ulstu/is/sbapp/WebConfiguration.java

@@ -0,0 +1,13 @@
+package ru.ulstu.is.sbapp;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+class WebConfiguration implements WebMvcConfigurer {
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**").allowedMethods("*");
+    }
+}

src/main/java/ru/ulstu/is/sbapp/configuration/TypeConfiguration.java

@@ -0,0 +1,20 @@
+package ru.ulstu.is.sbapp.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import ru.ulstu.is.sbapp.interfaces.DoubleType;
+import ru.ulstu.is.sbapp.interfaces.StringType;
+
+@Configuration
+public class TypeConfiguration {
+
+    @Bean(value = "str")
+    public StringType createStrType(){
+        return new StringType();
+    }
+
+    @Bean(value = "double")
+    public DoubleType createDoubleType(){
+        return new DoubleType();
+    }
+}

src/main/java/ru/ulstu/is/sbapp/controllers/MainController.java

@@ -0,0 +1,43 @@
+package ru.ulstu.is.sbapp.controllers;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import ru.ulstu.is.sbapp.service.ServiceType;
+
+@RestController
+public class MainController {
+    private final ServiceType Service;
+
+    public MainController(ServiceType service) {
+        Service = service;
+    }
+
+    @GetMapping("/Func1")
+    public Object Func1(@RequestParam(value = "Type") String Type,
+                          @RequestParam(value = "value1") Object value1,
+                          @RequestParam(value = "value2") Object value2){
+        return Service.Func1(value1,value2,Type);
+    }
+
+    @GetMapping("/Func2")
+    public Object Func2(@RequestParam(value = "Type") String Type,
+                          @RequestParam(value = "value1") Object value1,
+                        @RequestParam(value = "value2") Object value2){
+        return Service.Func2(value1, value2, Type);
+    }
+
+    @GetMapping("/Func3")
+    public Object Func3(@RequestParam(value = "Type") String Type,
+                          @RequestParam(value = "value1") Object value1,
+                          @RequestParam(value = "value2") Object value2){
+        return Service.Func3(value1,value2,Type);
+    }
+
+    @GetMapping("/Func4")
+    public Object Func4(@RequestParam(value = "Type") String Type,
+                          @RequestParam(value = "value1") Object value1,
+                          @RequestParam(value = "value2") Object value2){
+        return Service.Func4(value1,value2,Type);
+    }
+}

src/main/java/ru/ulstu/is/sbapp/database/model/Album.java

@@ -0,0 +1,101 @@
+package ru.ulstu.is.sbapp.database.model;
+
+import jakarta.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+@Table(name = "album")
+public class Album {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "name")
+    private String albumName;
+
+    @OneToMany(mappedBy = "album", cascade = CascadeType.ALL, orphanRemoval = true,fetch = FetchType.LAZY)
+    private List<Song> songs = new ArrayList<>();
+
+    @ManyToMany(cascade = { CascadeType.PERSIST, CascadeType.MERGE }, fetch = FetchType.LAZY)
+    @JoinTable(name = "albums_artists",
+            joinColumns = @JoinColumn(name = "album_id"),
+            inverseJoinColumns = @JoinColumn(name = "artist_id"))
+    private List<Artist> artists = new ArrayList<>();
+
+    public Album(){
+    }
+    public Album(String albumName){
+        this.albumName = albumName;
+    }
+    public Long getId() {
+        return id;
+    }
+
+    public String getAlbumName() {
+        return albumName;
+    }
+    public void setAlbumName(String albumName) {
+        this.albumName = albumName;
+    }
+    public List<Artist> getArtists() {
+        return artists;
+    }
+    public List<Song> getSongs(){return songs;}
+    public void setArtists(List<Artist> artists) {
+        this.artists = artists;
+    }
+    public void update(Album album){
+        this.albumName = album.albumName;
+        this.artists = album.getArtists();
+    }
+    public void addArtist(Artist artist){
+        if  (artists == null){
+            this.artists = new ArrayList<>();
+        }
+        if (!artists.contains(artist)) {
+            this.artists.add(artist);
+            artist.addAlbum(this);
+        }
+    }
+    public void removeArtist(Artist artist){
+        if (artists.contains(artist)) {
+            this.artists.remove(artist);
+            artist.removeAlbum(this);
+        }
+    }
+    public void addSong(Song song){
+        if  (songs == null){
+            this.songs = new ArrayList<>();
+        }
+        if (!songs.contains(song)) {
+            this.songs.add(song);
+            song.setAlbum(this);
+        }
+    }
+    public void removeSong(Song song){
+        if (songs.contains(song))
+            this.songs.remove(song);
+    }
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Album album = (Album) o;
+        return Objects.equals(id, album.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Album{" +
+                "id=" + id +
+                ", albumName='" + albumName + '\'' +
+                '}';
+    }
+}

src/main/java/ru/ulstu/is/sbapp/database/model/Artist.java

@@ -0,0 +1,89 @@
+package ru.ulstu.is.sbapp.database.model;
+
+import jakarta.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Artist {
+    @Id
+    @GeneratedValue
+    private Long id;
+    @Column(name = "name")
+    private String artistName;
+    @Column(name = "genre")
+    private String genre;
+    @ManyToMany(mappedBy = "artists", cascade = CascadeType.MERGE, fetch = FetchType.LAZY)
+    private List<Album> albums;
+    public Artist() {
+    }
+
+    public Artist(String artistName, String genre) {
+        this.artistName = artistName;
+        this.genre = genre;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getArtistName() {
+        return artistName;
+    }
+
+    public void setArtistName(String artistName) {
+        this.artistName = artistName;
+    }
+
+    public String getGenre() {
+        return genre;
+    }
+
+    public void setGenre(String genre) {
+        this.genre = genre;
+    }
+
+    public List<Album> getAlbums() {
+        return albums;
+    }
+
+    public void setAlbums(List<Album> albums) {
+        this.albums = albums;
+    }
+
+    public void addAlbum(Album album) {
+        if (this.albums == null) {
+            this.albums = new ArrayList<>();
+        }
+        if (!this.albums.contains(album))
+            this.albums.add(album);
+    }
+
+    public void removeAlbum(Album album) {
+        if (this.albums.contains(album))
+            this.albums.remove(album);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Artist artist = (Artist) o;
+        return Objects.equals(id, artist.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Artist{" +
+                "id=" + id +
+                ", artistName='" + artistName + '\'' +
+                ", genre='" + genre + '\'' +
+                '}';
+    }
+}

src/main/java/ru/ulstu/is/sbapp/database/model/Song.java

@@ -0,0 +1,69 @@
+package ru.ulstu.is.sbapp.database.model;
+
+import jakarta.persistence.*;
+
+import java.util.Objects;
+
+@Entity
+@Table(name = "song")
+public class Song {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "name")
+    private String songName;
+
+    @Column(name = "duration")
+    private Double duration;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "album_id")
+    private Album album;
+    public Song(){
+    }
+    public Song(String songName, Double duration){
+        this.songName = songName;
+        this.duration = duration;
+    }
+    public Long getId(){return id;}
+    public String getSongName(){
+        return songName;
+    }
+    public Double getSongDuration(){
+        return duration;
+    }
+
+    public void setSongName(String songName) {
+        this.songName = songName;
+    }
+
+    public void setSongDuration(Double duration) {
+        this.duration = duration;
+    }
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Song song = (Song) o;
+        return Objects.equals(id, song.id);
+    }
+    public Album getAlbum(){
+        return album;
+    }
+    public void setAlbum(Album album){
+        this.album = album;
+    }
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Song{" +
+                "id=" + id +
+                ", songName='" + songName + '\'' +
+                ", duration='" + duration + '\'' +
+                '}';
+    }
+}

src/main/java/ru/ulstu/is/sbapp/database/service/AlbumService.java

@@ -0,0 +1,143 @@
+package ru.ulstu.is.sbapp.database.service;
+
+import org.springframework.context.annotation.Lazy;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.sbapp.database.model.Artist;
+import ru.ulstu.is.sbapp.database.model.Song;
+import ru.ulstu.is.sbapp.database.model.Album;
+
+import jakarta.persistence.*;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+@Service
+public class AlbumService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Album addAlbum(String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Album name is null or empty");
+        }
+        final Album album = new Album(name);
+        em.persist(album);
+        return album;
+    }
+    @Transactional
+    public Album addSong(Album currentAlbum, List<Song> songs){
+        for (Song song : songs) {
+            if (song.getAlbum() != null) {
+                song.getAlbum().removeSong(song);
+            }
+            currentAlbum.addSong(song);
+            em.merge(song);
+        }
+        em.merge(currentAlbum);
+        return currentAlbum;
+    }
+    @Transactional
+    public Album addArtist(Long AlbumId, Long ArtistId){
+        final Album album = em.find(Album.class, AlbumId);
+        if (album == null) {
+            throw new EntityNotFoundException(String.format("Album with id [%s] is not found", AlbumId));
+        }
+
+        final Artist artist = em.find(Artist.class, ArtistId);
+        if (artist == null) {
+            throw new EntityNotFoundException(String.format("Artist with id [%s] is not found", ArtistId));
+        }
+        album.addArtist(artist);
+        return em.merge(album);
+    }
+    @Transactional(readOnly = true)
+    public Album findAlbum(Long id) {
+        final Album album = em.find(Album.class, id);
+        if (album == null) {
+            throw new EntityNotFoundException(String.format("Album with id [%s] is not found", id));
+        }
+        return album;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Album> findAllAlbums() {
+        return em.createQuery("select s from Album s", Album.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Album updateAlbum(Long id, String name, List<Song> newSongs, List<Artist> newArtists) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Album name is null or empty");
+        }
+        final Album currentAlbum = findAlbum(id);
+        currentAlbum.setAlbumName(name);
+        em.merge(currentAlbum);
+        if(newSongs != null){
+            for (Song newSong : newSongs) {
+                if (!currentAlbum.getSongs().contains(newSong)) {
+                    currentAlbum.addSong(newSong);
+                }
+            }
+            for(int i = 0; i < currentAlbum.getSongs().size(); i++) {
+                if (!newSongs.contains(currentAlbum.getSongs().get(i))) {
+                    currentAlbum.removeSong(currentAlbum.getSongs().get(i));
+                }
+
+            }
+        }
+        for (Artist newArtist : newArtists) {
+            if (!currentAlbum.getArtists().contains(newArtist)) {
+                currentAlbum.addArtist(newArtist);
+            }
+        }
+        for(int i = 0; i < currentAlbum.getArtists().size(); i++){
+            if(!newArtists.contains(currentAlbum.getArtists().get(i))){
+                currentAlbum.removeArtist(currentAlbum.getArtists().get(i));
+            }
+        }
+        em.merge(currentAlbum);
+        return currentAlbum;
+    }
+    @Transactional
+    public Album deleteAlbum(Long id) {
+        final Album currentAlbum = findAlbum(id);
+        List<Artist> artists = currentAlbum.getArtists();
+        for (Artist artist : artists) {
+            Artist temp = artist;
+            currentAlbum.removeArtist(temp);
+        }
+
+        final List<Song> songs = currentAlbum.getSongs();
+        for (Song song : songs) {
+            song.setAlbum(null);
+        }
+        em.remove(currentAlbum);
+        return null;
+    }
+    @Transactional
+    public void deleteAllAlbums() {
+        List<Album> list = em.createQuery("select s from Album s", Album.class).getResultList();
+        for(int i = 0; i < list.size(); i++){
+            deleteAlbum(list.get(i).getId());
+        }
+        em.createQuery("update Song s SET s.album = null ").executeUpdate();
+        em.createQuery("delete from Album").executeUpdate();
+    }
+
+    @Transactional
+    public List<Album> findFilteredAlbum(Long[] arr) {
+        if (arr.length == 0) {
+            throw new IllegalArgumentException("Array id is empty");
+        }
+        List<Album> albumList = new ArrayList<>();
+        for (Long aLong : arr) {
+            albumList.add(em.find(Album.class, aLong));
+        }
+        return albumList;
+    }
+}

src/main/java/ru/ulstu/is/sbapp/database/service/ArtistService.java

@@ -0,0 +1,97 @@
+package ru.ulstu.is.sbapp.database.service;
+
+import org.springframework.context.annotation.Lazy;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.sbapp.database.model.Artist;
+import ru.ulstu.is.sbapp.database.model.Song;
+import ru.ulstu.is.sbapp.database.model.Album;
+
+import jakarta.persistence.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Service
+public class ArtistService {
+    @PersistenceContext
+    private EntityManager em;
+
+    private SongService ss;
+
+    @Transactional
+    public Artist addArtist(String name, String genre) {
+        if (!StringUtils.hasText(name) || !StringUtils.hasText(genre)) {
+            throw new IllegalArgumentException("Artist name and genre are null or empty");
+        }
+        final Artist artist = new Artist(name, genre);
+        em.persist(artist);
+        return artist;
+    }
+    @Transactional(readOnly = true)
+    public Artist findArtist(Long id) {
+        final Artist artist = em.find(Artist.class, id);
+        if (artist == null) {
+            throw new EntityNotFoundException(String.format("Artist with id [%s] is not found", id));
+        }
+        return artist;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Artist> findAllArtists() {
+        return em.createQuery("select s from Artist s", Artist.class)
+                .getResultList();
+    }
+    @Transactional(readOnly = true)
+    public List<Artist> findFilteredArtist(Long[] arr) {
+        if (arr.length == 0) {
+            throw new IllegalArgumentException("Array id is empty");
+        }
+        List<Artist> artistsList = new ArrayList<>();
+        for (int i = 0; i < arr.length; i++) {
+            artistsList.add(em.find(Artist.class, arr[i]));
+        }
+        return artistsList;
+    }
+
+    @Transactional
+    public Artist updateArtist(Long id, String name, String genre) {
+        if (!StringUtils.hasText(name) || !StringUtils.hasText(genre)) {
+            throw new IllegalArgumentException("Artist name and genre is null or empty");
+        }
+        final Artist currentArtist = findArtist(id);
+        currentArtist.setArtistName(name);
+        currentArtist.setGenre(genre);
+        em.merge(currentArtist);
+        return currentArtist;
+    }
+
+    @Transactional
+    public Artist deleteArtist(Long id) {
+        final Artist currentArtist = findArtist(id);
+        int size = currentArtist.getAlbums().size();
+        for (int i = 0; i < size; i++) {
+            Album temp = currentArtist.getAlbums().get(i);
+            temp.removeArtist(currentArtist);
+            currentArtist.removeAlbum(temp);
+            em.remove(temp);
+        }
+        em.remove(currentArtist);
+        return currentArtist;
+    }
+   @Transactional
+    public List<Song> findAllSongsProducedArtist(Artist currentArtist){
+        if(currentArtist.getAlbums().size() == 0){
+            throw new IllegalArgumentException("Artist doesn`t produced");
+        }
+        List songList = em.createQuery("SELECT DISTINCT a.songs FROM Album a where :artistAlbum MEMBER OF a.artists")
+                .setParameter("artistAlbum", currentArtist).getResultList();
+        return songList;
+    }
+    @Transactional
+    public void deleteAllArtists() {
+        em.createQuery("delete from Artist").executeUpdate();
+    }
+}

src/main/java/ru/ulstu/is/sbapp/database/service/FindByNameService.java

@@ -0,0 +1,48 @@
+package ru.ulstu.is.sbapp.database.service;
+
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.PersistenceContext;
+import jakarta.transaction.Transactional;
+import org.springframework.stereotype.Service;
+import ru.ulstu.is.sbapp.database.model.Album;
+import ru.ulstu.is.sbapp.database.model.Artist;
+import ru.ulstu.is.sbapp.database.model.Song;
+
+import java.util.*;
+
+
+@Service
+public class FindByNameService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Map<String, List<Object>> GetResult(String name) {
+        Map<String, List<Object>> resultMap = new HashMap<>();
+
+        // запрос для поиска песен по названию
+        List<Song> songs = em.createQuery("SELECT s FROM Song s WHERE s.songName = :name", Song.class)
+                .setParameter("name", name).getResultList();
+
+        // запрос для поиска альбомов по названию
+        List<Album> albums = em.createQuery("SELECT a FROM Album a WHERE a.albumName = :name", Album.class)
+                .setParameter("name", name).getResultList();
+
+        // запрос для поиска артистов по имени
+        List<Artist> artists = em.createQuery("SELECT a FROM Artist a WHERE a.artistName = :name", Artist.class)
+                .setParameter("name", name).getResultList();
+
+        // добавляем результаты поиска песен в resultMap
+        List<Object> songsResult = new ArrayList<>(songs);
+        resultMap.put("songs", songsResult);
+
+        // добавляем результаты поиска альбомов в resultMap
+        List<Object> albumsResult = new ArrayList<>(albums);
+        resultMap.put("albums", albumsResult);
+
+        // добавляем результаты поиска артистов в resultMap
+        List<Object> artistsResult = new ArrayList<>(artists);
+        resultMap.put("artists", artistsResult);
+        return resultMap;
+    }
+}

src/main/java/ru/ulstu/is/sbapp/database/service/SongService.java

@@ -0,0 +1,91 @@
+package ru.ulstu.is.sbapp.database.service;
+
+import org.springframework.context.annotation.Lazy;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.sbapp.database.model.Artist;
+import ru.ulstu.is.sbapp.database.model.Song;
+import ru.ulstu.is.sbapp.database.model.Album;
+
+import jakarta.persistence.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Service
+public class SongService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Song addSong(String songName, Double duration) {
+        if (!StringUtils.hasText(songName) || duration <= 0) {
+            throw new IllegalArgumentException("Song name is null or empty");
+        }
+        final Song song = new Song(songName, duration);
+        em.persist(song);
+        return song;
+    }
+    @Transactional(readOnly = true)
+    public Song findSong(Long id) {
+        final Song song = em.find(Song.class, id);
+        if (song == null) {
+            throw new EntityNotFoundException(String.format("Song with id [%s] is not found", id));
+        }
+        return song;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Song> findAllSongs() {
+        return em.createQuery("select s from Song s", Song.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Song updateSong(Long id, String songName, Double duration, Album album) {
+        if (!StringUtils.hasText(songName) || duration <= 0) {
+            throw new IllegalArgumentException("Song name is null or empty");
+        }
+        final Song currentSong = findSong(id);
+        currentSong.setSongName(songName);
+        currentSong.setSongDuration(duration);
+        currentSong.setAlbum(album);
+        em.merge(currentSong);
+        return currentSong;
+    }
+
+    @Transactional
+    public Song deleteSong(Long id) {
+        final Song currentSong= findSong(id);
+        if(currentSong.getAlbum() != null) currentSong.getAlbum().removeSong(currentSong);
+        em.remove(currentSong);
+        return currentSong;
+    }
+    @Transactional(readOnly = true)
+    public List<Song> findFilteredSongs(Long[] arr) {
+        if (arr.length == 0) {
+            throw new IllegalArgumentException("Array id is empty");
+        }
+        List<Song> songList = new ArrayList<>();
+        for (Long aLong : arr) {
+            songList.add(em.find(Song.class, aLong));
+        }
+        return songList;
+    }
+
+    @Transactional
+    public List findSongsInAlbum(Song currentSong){
+        if(currentSong.getAlbum() == null){
+            throw new IllegalArgumentException("Album is empty");
+        }
+        return em.createQuery("SELECT s.songs FROM Album s where s.id = :songAlbum")
+                .setParameter("songAlbum", currentSong.getAlbum().getId()).getResultList();
+    }
+
+    @Transactional
+    public void deleteAllSongs() {
+        em.createQuery("delete from Song").executeUpdate();
+    }
+}

src/main/java/ru/ulstu/is/sbapp/interfaces/DoubleType.java

@@ -0,0 +1,23 @@
+package ru.ulstu.is.sbapp.interfaces;
+
+public class DoubleType implements ITypeOfData<Double> {
+    @Override
+    public Double Func1(Double value1, Double value2) {
+        return value1 + value2;
+    }
+
+    @Override
+    public Double Func2(Double value1, Double value2) {
+        return Math.min(value1, value2);
+    }
+
+    @Override
+    public Double Func3(Double value1, Double value2) {
+        return Math.max(value1, value2);
+    }
+
+    @Override
+    public Double Func4(Double value1, Double value2) {
+        return Math.pow(value1,value2);
+    }
+}

src/main/java/ru/ulstu/is/sbapp/interfaces/ITypeOfData.java

@@ -0,0 +1,8 @@
+package ru.ulstu.is.sbapp.interfaces;
+
+public interface ITypeOfData <T>{
+    T Func1(T value1, T value2);
+    T Func2(T value1, T value2);
+    T Func3(T value1, T value2);
+    T Func4(T value1, T value2);
+}

src/main/java/ru/ulstu/is/sbapp/interfaces/StringType.java

@@ -0,0 +1,26 @@
+package ru.ulstu.is.sbapp.interfaces;
+
+import java.util.Locale;
+
+public class StringType implements ITypeOfData<String> {
+    @Override
+    public String Func1(String value1, String value2) {
+        return value1 + value2;
+    }
+
+    @Override
+    public String Func2(String value1, String value2) {
+        return value1.toUpperCase() + value2.toUpperCase();
+    }
+
+    @Override
+    public String Func3(String value1, String value2) {
+        String[] array = value1.split(value2);
+        return String.join(" ", array);
+    }
+
+    @Override
+    public String Func4(String value1, String value2) {
+        return value1.toLowerCase() + value2.toLowerCase();
+    }
+}

src/main/java/ru/ulstu/is/sbapp/service/ServiceType.java

@@ -0,0 +1,58 @@
+package ru.ulstu.is.sbapp.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.context.ApplicationContext;
+import ru.ulstu.is.sbapp.interfaces.ITypeOfData;
+
+@Service
+public class ServiceType {
+    private final ApplicationContext applicationContext;
+    private ITypeOfData _type;
+    private Object _value1;
+    private Object _value2;
+
+    public ServiceType(ApplicationContext applicationContext) {
+        this.applicationContext = applicationContext;
+    }
+
+    private void ValidateParams(Object value1, Object value2, String type){
+        _type = (ITypeOfData)applicationContext.getBean(type);
+
+        switch (type) {
+            case "double" -> {
+                try {
+                    _value1 = Double.valueOf(value1.toString());
+                    _value2 = Double.valueOf(value2.toString());
+                }catch (Exception ex){
+                    _value1 = 0.0;
+                    _value2 = 0.0;
+                }
+            }
+            case "str" -> {
+                _value1 = value1;
+                _value2 = value2;
+            }
+        }
+
+    }
+
+    public Object Func1(Object value1, Object value2, String type){
+        ValidateParams(value1,value2,type);
+        return  String.format("%s", _type.Func1(_value1,_value2));
+    }
+
+    public Object Func2(Object value1, Object value2, String type){
+        ValidateParams(value1,value2,type);
+        return  String.format("%s", _type.Func2(_value1, _value2));
+    }
+
+    public Object Func3(Object value1, Object value2, String type){
+        ValidateParams(value1,value2,type);
+        return  String.format("%s", _type.Func3(_value1,_value2));
+    }
+
+    public Object Func4(Object value1, Object value2, String type){
+        ValidateParams(value1,value2,type);
+        return  String.format("%s", _type.Func4(_value1,_value2));
+    }
+}

src/main/resources/application.properties

@@ -0,0 +1,11 @@
+spring.main.banner-mode=off
+#server.port=8080
+spring.datasource.url=jdbc:h2:file:./data
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=update
+spring.h2.console.enabled=true
+spring.h2.console.settings.trace=false
+spring.h2.console.settings.web-allow-others=false

src/test/java/ru/ulstu/is/sbapp/SbappApplicationTests.java

@@ -0,0 +1,215 @@
+package ru.ulstu.is.sbapp;
+
+import jakarta.transaction.Transactional;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.platform.commons.logging.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import ru.ulstu.is.sbapp.database.model.Artist;
+import ru.ulstu.is.sbapp.database.model.Song;
+import ru.ulstu.is.sbapp.database.model.Album;
+import ru.ulstu.is.sbapp.database.service.ArtistService;
+import ru.ulstu.is.sbapp.database.service.FindByNameService;
+import ru.ulstu.is.sbapp.database.service.SongService;
+import ru.ulstu.is.sbapp.database.service.AlbumService;
+
+import jakarta.persistence.*;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.logging.Logger;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@SpringBootTest
+public class SbappApplicationTests {
+	@Autowired
+	private AlbumService albumService;
+	@Autowired
+	private ArtistService artistService;
+	@Autowired
+	private SongService songService;
+	@Autowired
+	private FindByNameService findService;
+	@Test
+	void testSongCreate(){
+		songService.deleteAllSongs();
+		final Song song = songService.addSong("Song",2.36);
+		Assertions.assertNotNull(song.getId());
+	}
+
+	@Test
+	void testArtistCreate(){
+		artistService.deleteAllArtists();
+		final Artist artist = artistService.addArtist("Artist", "genre");
+		Assertions.assertNotNull(artist.getId());
+	}
+
+	@Test
+	void testAlbumCreate() throws IOException {
+		albumService.deleteAllAlbums();
+		artistService.deleteAllArtists();
+		songService.deleteAllSongs();
+		final Artist artist1 = artistService.addArtist("Artist", "genre");
+		final Artist artist2 = artistService.addArtist("Artist", "genre");
+		final Album album1= albumService.addAlbum("Album");
+		final Album album2= albumService.addAlbum("Album");
+		album1.addArtist(artist1);
+		album2.addArtist(artist1);
+		album2.addArtist(artist2);
+		Assertions.assertNotNull(album1.getId());
+		Assertions.assertNotNull(album2.getId());
+	}
+
+	@Test
+	void ReadAlbum() throws IOException {
+		albumService.deleteAllAlbums();
+		artistService.deleteAllArtists();
+		songService.deleteAllSongs();
+		final Artist artist1 = artistService.addArtist("Artist", "genre");
+		final Song song = songService.addSong("Song",3.28);
+		final Album album2= albumService.addAlbum("Album");
+		album2.addArtist(artist1);
+		final Album findAlbum = albumService.findAlbum(album2.getId());
+		Assertions.assertEquals(album2, findAlbum);
+	}
+	@Test
+	void ReadAlbumTrue() throws IOException {
+		albumService.deleteAllAlbums();
+		artistService.deleteAllArtists();
+		songService.deleteAllSongs();
+		final Artist artist1 = artistService.addArtist("Artist", "genre");
+		final Artist artist2 = artistService.addArtist("Artist2", "genre");
+		final Song song = songService.addSong("Song",3.19);
+		Album album2= albumService.addAlbum("Album");
+		album2 =albumService.addArtist(album2.getId(),artist1.getId());
+		album2 =albumService.addArtist(album2.getId(),artist2.getId());
+		final Album findAlbum = albumService.findAlbum(album2.getId());
+		Assertions.assertEquals(album2, findAlbum);
+	}
+	@Test
+	void ReadSong(){
+		songService.deleteAllSongs();
+		final Song song = songService.addSong("Song",3.29);
+		final Album album = albumService.addAlbum("Album");
+		song.setAlbum(album);
+		final Song findSong = songService.findSong(song.getId());
+		Assertions.assertEquals(song, findSong);
+	}
+	@Test
+	void ReadArtist(){
+		artistService.deleteAllArtists();
+		final Artist artist = artistService.addArtist("Artist", "genre");
+		final Artist findArtist = artistService.findArtist(artist.getId());
+		Assertions.assertEquals(artist, findArtist);
+	}
+	@Test
+	void testAlbumCheck() throws IOException {
+		albumService.deleteAllAlbums();
+		artistService.deleteAllArtists();
+		songService.deleteAllSongs();
+		final Artist artist1 = artistService.addArtist("Artist", "genre");
+		final Artist artist2 = artistService.addArtist("Artist1", "genre1");
+		final Song song = songService.addSong("Song",3.28);
+		final Album album2= albumService.addAlbum("Album");
+		album2.addArtist(artist1);
+		album2.addArtist(artist2);
+		Assertions.assertEquals(album2.getArtists().size(),2);
+	}
+
+	@Test
+	void testAlbumPreviewCheck() throws IOException {
+		albumService.deleteAllAlbums();
+		artistService.deleteAllArtists();
+		songService.deleteAllSongs();
+		final Artist artist1 = artistService.addArtist("Artist", "genre");
+		final Artist artist2 = artistService.addArtist("Artist1", "genre1");
+		final Song song = songService.addSong("Song",2.10);
+		final Album album2= albumService.addAlbum("Album");
+		album2.addArtist(artist1);
+		album2.addArtist(artist2);
+		Album v = albumService.findAlbum(album2.getId());
+	}
+	@Test
+	void testSongReadNotFound() {
+		songService.deleteAllSongs();
+		Assertions.assertThrows(EntityNotFoundException.class, () -> songService.findSong(-1L));
+	}
+	@Test
+	void testArtistReadNotFound() {
+		artistService.deleteAllArtists();
+		Assertions.assertThrows(EntityNotFoundException.class, () -> artistService.findArtist(-1L));
+	}
+	@Test
+	void testAlbumReadNotFound() {
+		albumService.deleteAllAlbums();
+		Assertions.assertThrows(EntityNotFoundException.class, () -> albumService.findAlbum(-1L));
+	}
+	@Test
+	void testSongCount(){
+		songService.deleteAllSongs();
+		final Song song1 = songService.addSong("Song",3.15);
+		final Song song2 = songService.addSong("Song1",2.43);
+		final List<Song> songs = songService.findAllSongs();
+		Assertions.assertEquals(songs.size(),2);
+	}
+	@Test
+	void testArtistCount(){
+		artistService.deleteAllArtists();
+		final Artist cat1 = artistService.addArtist("Shorts", "genre");
+		final Artist ca2 = artistService.addArtist("Comedy", "genre");
+		final List<Artist> categories = artistService.findAllArtists();
+		assertEquals(categories.size(),2);
+	}
+	@Test
+	void testAlbumCount() throws IOException {
+		albumService.deleteAllAlbums();
+		artistService.deleteAllArtists();
+		songService.deleteAllSongs();
+		final Artist cat1 = artistService.addArtist("Artist", "genre");
+		final Song song2 = songService.addSong("Song",3.17);
+		final Album album1 = albumService.addAlbum("Album");
+		final Album album2 = albumService.addAlbum("Album1");
+		album1.addArtist(cat1);
+		album2.addArtist(cat1);
+		final List<Album> albums = albumService.findAllAlbums();
+		Assertions.assertEquals(albums.size(),2);
+	}
+	@Test
+	void testDop() {
+		String nameToTest = "a";
+
+		// создаем данные для тестирования
+		albumService.deleteAllAlbums();
+		artistService.deleteAllArtists();
+		songService.deleteAllSongs();
+		final Artist artist1 = artistService.addArtist(nameToTest, "genre");
+		final Album album1= albumService.addAlbum(nameToTest);
+		final Song song1 = songService.addSong(nameToTest, 3.29);
+		album1.addArtist(artist1);
+		artist1.addAlbum(album1);
+		album1.addSong(song1);
+
+		Map<String, List<Object>> resultMap = findService.GetResult(nameToTest);
+
+		List<Object> artistsList = resultMap.get("artists");
+		assertEquals(1, artistsList.size());
+		Object artistResult = artistsList.get(0);
+		assertEquals(nameToTest, ((Artist) artistResult).getArtistName());
+
+		List<Object> albumsList = resultMap.get("albums");
+		assertEquals(1, albumsList.size());
+		Object albumResult = albumsList.get(0);
+		assertEquals(nameToTest, ((Album) albumResult).getAlbumName());
+
+		List<Object> songsList = resultMap.get("songs");
+		assertEquals(1, songsList.size());
+		Object songResult = songsList.get(0);
+		assertEquals(nameToTest, ((Song) songResult).getSongName());
+	}
+}

src/test/resources/application.properties

@@ -0,0 +1,6 @@
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=create-drop