lab 2

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    "configurations": [
+        {
+            "type": "java",
+            "name": "Spring Boot-DemoApplication<demo>",
+            "request": "launch",
+            "cwd": "${workspaceFolder}",
+            "mainClass": "com.example.demo.DemoApplication",
+            "projectName": "demo",
+            "args": "",
+            "envFile": "${workspaceFolder}/.env"
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "java.compile.nullAnalysis.mode": "automatic"
+}

demo/.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/

demo/build.gradle

@@ -0,0 +1,28 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.2.3'
+	id 'io.spring.dependency-management' version '1.1.4'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	sourceCompatibility = '17'
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.3.0'
+	implementation 'org.modelmapper:modelmapper:3.2.0'
+
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}

demo/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

demo/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/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
+
+# 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 "$JAVACMD" "$@"

demo/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.
+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

demo/settings.gradle

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

demo/src/main/java/com/example/demo/DemoApplication.java

@@ -0,0 +1,58 @@
+package com.example.demo;
+
+import java.util.Objects;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import com.example.demo.items.model.ItemEntity;
+import com.example.demo.items.service.ItemService;
+import com.example.demo.stocks.model.StockEntity;
+import com.example.demo.stocks.service.StockService;
+import com.example.demo.types.model.TypeEntity;
+import com.example.demo.types.service.TypeService;
+
+@SpringBootApplication
+public class DemoApplication implements CommandLineRunner {
+	private final Logger log = LoggerFactory.getLogger(DemoApplication.class);
+
+	private final TypeService typeService;
+	private final ItemService itemService;
+	private final StockService stockService;
+
+	public DemoApplication(TypeService typeService, ItemService itemService, StockService stockService) {
+		this.typeService = typeService;
+		this.itemService = itemService;
+		this.stockService = stockService;
+	}
+
+	public static void main(String[] args) {
+		SpringApplication.run(DemoApplication.class, args);
+	}
+
+	@Override
+	public void run(String... args) throws Exception {
+		if (args.length > 0 && Objects.equals("--populate", args[0])) {
+			log.info("Create default types values");
+			final var type1 = typeService.create(new TypeEntity(null, "Мясная"));
+			final var type2 = typeService.create(new TypeEntity(null, "Пепперони"));
+			final var type3 = typeService.create(new TypeEntity(null, "Сырная"));
+
+			final var stock1 = stockService.create(new StockEntity(null, "без акции", 0));
+			final var stock2 = stockService.create(new StockEntity(null, "50% до вечера", 50));
+			final var stock3 = stockService.create(new StockEntity(null, "День рождения", 25));
+
+			log.info("Create default items values");
+			itemService.create(new ItemEntity(null, type1, 399.00, 20, stock1));
+			itemService.create(new ItemEntity(null, type1, 499.00, 3, stock2));
+			itemService.create(new ItemEntity(null, type2, 450.50, 30, stock3));
+			itemService.create(new ItemEntity(null, type2, 900.50, 10, stock1));
+			itemService.create(new ItemEntity(null, type2, 600.00, 6, stock2));
+			itemService.create(new ItemEntity(null, type3, 750.00, 6, stock3));
+			itemService.create(new ItemEntity(null, type3, 670.00, 3, stock1));
+		}
+	}
+}

demo/src/main/java/com/example/demo/core/configuration/Constants.java

@@ -0,0 +1,8 @@
+package com.example.demo.core.configuration;
+
+public class Constants {
+    public static final String API_URL = "/api/1.0";
+
+    private Constants() {
+    }
+}

demo/src/main/java/com/example/demo/core/configuration/MapperConfiguration.java

@@ -0,0 +1,13 @@
+package com.example.demo.core.configuration;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class MapperConfiguration {
+    @Bean
+    ModelMapper modelMapper() {
+        return new ModelMapper();
+    }
+}

demo/src/main/java/com/example/demo/core/configuration/WebConfiguration.java

@@ -0,0 +1,15 @@
+package com.example.demo.core.configuration;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.lang.NonNull;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class WebConfiguration implements WebMvcConfigurer {
+    @Override
+    public void addCorsMappings(@NonNull CorsRegistry registry) {
+        registry.addMapping("/**")
+                .allowedMethods("GET", "POST", "PUT", "DELETE");
+    }
+}

demo/src/main/java/com/example/demo/core/error/NotFoundException.java

@@ -0,0 +1,7 @@
+package com.example.demo.core.error;
+
+public class NotFoundException extends RuntimeException {
+    public NotFoundException(Long id) {
+        super(String.format("Entity with id [%s] is not found or not exists", id));
+    }
+}

demo/src/main/java/com/example/demo/core/model/BaseEntity.java

@@ -0,0 +1,20 @@
+package com.example.demo.core.model;
+
+public abstract class BaseEntity {
+    protected Long id;
+
+    protected BaseEntity() {
+    }
+
+    protected BaseEntity(Long id) {
+        this.id = id;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+}

demo/src/main/java/com/example/demo/core/repository/CommonRepository.java

@@ -0,0 +1,17 @@
+package com.example.demo.core.repository;
+
+import java.util.List;
+
+public interface CommonRepository<E, T> {
+    List<E> getAll();
+
+    E get(T id);
+
+    E create(E entity);
+
+    E update(E entity);
+
+    E delete(E entity);
+
+    void deleteAll();
+}

demo/src/main/java/com/example/demo/core/repository/MapRepository.java

@@ -0,0 +1,57 @@
+package com.example.demo.core.repository;
+
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+
+import com.example.demo.core.model.BaseEntity;
+
+public abstract class MapRepository<E extends BaseEntity> implements CommonRepository<E, Long> {
+    private final Map<Long, E> entities = new TreeMap<>();
+    private Long lastId = 0L;
+
+    protected MapRepository() {
+    }
+
+    @Override
+    public List<E> getAll() {
+        return entities.values().stream().toList();
+    }
+
+    @Override
+    public E get(Long id) {
+        return entities.get(id);
+    }
+
+    @Override
+    public E create(E entity) {
+        lastId++;
+        entity.setId(lastId);
+        entities.put(lastId, entity);
+        return entity;
+    }
+
+    @Override
+    public E update(E entity) {
+        if (get(entity.getId()) == null) {
+            return null;
+        }
+        entities.put(entity.getId(), entity);
+        return entity;
+    }
+
+    @Override
+    public E delete(E entity) {
+        if (get(entity.getId()) == null) {
+            return null;
+        }
+        entities.remove(entity.getId());
+        return entity;
+    }
+
+    @Override
+    public void deleteAll() {
+        lastId = 0L;
+        entities.clear();
+    }
+}

demo/src/main/java/com/example/demo/items/api/ItemController.java

@@ -0,0 +1,74 @@
+package com.example.demo.items.api;
+
+import java.util.List;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.example.demo.core.configuration.Constants;
+import com.example.demo.items.model.ItemEntity;
+import com.example.demo.items.service.ItemService;
+import com.example.demo.stocks.service.StockService;
+import com.example.demo.types.service.TypeService;
+
+import jakarta.validation.Valid;
+
+@RestController
+@RequestMapping(Constants.API_URL + "/item")
+public class ItemController {
+    private final ItemService itemService;
+    private final TypeService typeService;
+    private final StockService stockService;
+    private final ModelMapper modelMapper;
+
+    public ItemController(ItemService itemService, TypeService typeService, StockService stockService, ModelMapper modelMapper) {
+        this.itemService = itemService;
+        this.typeService = typeService;
+        this.stockService = stockService;
+        this.modelMapper = modelMapper;
+    }
+
+    private ItemDto toDto(ItemEntity entity) {
+        return modelMapper.map(entity, ItemDto.class);
+    }
+
+    private ItemEntity toEntity(ItemDto dto) {
+        final ItemEntity entity = modelMapper.map(dto, ItemEntity.class);
+        entity.setType(typeService.get(dto.getTypeId()));
+        entity.setStock(stockService.get(dto.getStockId()));
+        return entity;
+    }
+
+    @GetMapping
+    public List<ItemDto> getAll(@RequestParam(name = "typeId", defaultValue = "0") Long typeId) {
+        return itemService.getAll(typeId).stream().map(this::toDto).toList();
+    }
+
+    @GetMapping("/{id}")
+    public ItemDto get(@PathVariable(name = "id") Long id) {
+        return toDto(itemService.get(id));
+    }
+
+    @PostMapping
+    public ItemDto create(@RequestBody @Valid ItemDto dto) {
+        return toDto(itemService.create(toEntity(dto)));
+    }
+
+    @PutMapping("/{id}")
+    public ItemDto update(@PathVariable(name = "id") Long id, @RequestBody ItemDto dto) {
+        return toDto(itemService.update(id, toEntity(dto)));
+    }
+
+    @DeleteMapping("/{id}")
+    public ItemDto delete(@PathVariable(name = "id") Long id) {
+        return toDto(itemService.delete(id));
+    }
+}

demo/src/main/java/com/example/demo/items/api/ItemDto.java

@@ -0,0 +1,71 @@
+package com.example.demo.items.api;
+
+import com.example.demo.stocks.service.StockService;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+
+public class ItemDto {
+    private Long id;
+    @NotNull
+    private Long typeId;
+    @NotNull
+    @Min(1)
+    private Double price;
+    @NotNull
+    @Min(1)
+    private Integer count;
+    @NotNull
+    private Long stockId;
+    
+
+    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getTypeId() {
+        return typeId;
+    }
+
+    public void setTypeId(Long typeId) {
+        this.typeId = typeId;
+    }
+
+    public Double getPrice() {
+        return price;
+    }
+
+    public void setPrice(Double price) {
+        this.price = price;
+    }
+
+    public Integer getCount() {
+        return count;
+    }
+
+    public void setCount(Integer count) {
+        this.count = count;
+    }
+
+    public Long getStockId() {
+        return stockId;
+    }
+
+    public void setStockId(Long stockId) {
+        this.stockId = stockId;
+    }
+
+    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
+    public Double getSum(StockService stockService) {
+        Integer stockValue = stockService.getStockValueById(stockId);
+
+        double multiplier = (stockValue != null && stockValue != 0) ? stockValue / 100.0 : 1.0;
+        return price * count * multiplier;
+    }
+}

demo/src/main/java/com/example/demo/items/model/ItemEntity.java

@@ -0,0 +1,77 @@
+package com.example.demo.items.model;
+
+import java.util.Objects;
+
+import com.example.demo.core.model.BaseEntity;
+import com.example.demo.stocks.model.StockEntity;
+import com.example.demo.types.model.TypeEntity;
+
+public class ItemEntity extends BaseEntity {
+    private TypeEntity type;
+    private Double price;
+    private Integer count;
+    private StockEntity stock;
+
+    public ItemEntity() {
+        super();
+    }
+
+    public ItemEntity(Long id, TypeEntity type, Double price, Integer count, StockEntity stock) {
+        super(id);
+        this.type = type;
+        this.price = price;
+        this.count = count;
+        this.stock = stock;
+    }
+
+    public TypeEntity getType() {
+        return type;
+    }
+
+    public void setType(TypeEntity type) {
+        this.type = type;
+    }
+
+    public Double getPrice() {
+        return price;
+    }
+
+    public void setPrice(Double price) {
+        this.price = price;
+    }
+
+    public Integer getCount() {
+        return count;
+    }
+
+    public void setCount(Integer count) {
+        this.count = count;
+    }
+
+    public StockEntity getStock() {
+        return stock;
+    }
+
+    public void setStock(StockEntity stock) {
+        this.stock = stock;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, type, price, count, stock);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        final ItemEntity other = (ItemEntity) obj;
+        return Objects.equals(other.getId(), id)
+                && Objects.equals(other.getType(), type)
+                && Objects.equals(other.getPrice(), price)
+                && Objects.equals(other.getCount(), count)
+                && Objects.equals(other.getStock(), stock);
+    }
+}

demo/src/main/java/com/example/demo/items/repository/ItemRepository.java

@@ -0,0 +1,10 @@
+package com.example.demo.items.repository;
+
+import org.springframework.stereotype.Repository;
+
+import com.example.demo.core.repository.MapRepository;
+import com.example.demo.items.model.ItemEntity;
+
+@Repository
+public class ItemRepository extends MapRepository<ItemEntity> {
+}

demo/src/main/java/com/example/demo/items/service/ItemService.java

@@ -0,0 +1,52 @@
+package com.example.demo.items.service;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+
+import org.springframework.stereotype.Service;
+
+import com.example.demo.core.error.NotFoundException;
+import com.example.demo.items.model.ItemEntity;
+import com.example.demo.items.repository.ItemRepository;
+
+@Service
+public class ItemService {
+    private final ItemRepository repository;
+
+    public ItemService(ItemRepository repository) {
+        this.repository = repository;
+    }
+
+    public List<ItemEntity> getAll(Long typeId) {
+        if (Objects.equals(typeId, 0L)) {
+            return repository.getAll();
+        }
+        return repository.getAll().stream()
+                .filter(item -> item.getType().getId().equals(typeId))
+                .toList();
+    }
+
+    public ItemEntity get(Long id) {
+        return Optional.ofNullable(repository.get(id))
+                .orElseThrow(() -> new NotFoundException(id));
+    }
+
+    public ItemEntity create(ItemEntity entity) {
+        return repository.create(entity);
+    }
+
+    public ItemEntity update(Long id, ItemEntity entity) {
+        final ItemEntity existsEntity = get(id);
+        existsEntity.setType(entity.getType());
+        existsEntity.setPrice(entity.getPrice());
+        existsEntity.setCount(entity.getCount());
+        existsEntity.setStock(entity.getStock());
+        return repository.update(existsEntity);
+    }
+
+    public ItemEntity delete(Long id) {
+        final ItemEntity existsEntity = get(id);
+        return repository.delete(existsEntity);
+    }
+}

demo/src/main/java/com/example/demo/speaker/api/SpeakerController.java

@@ -0,0 +1,23 @@
+package com.example.demo.speaker.api;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.example.demo.speaker.service.SpeakerService;
+
+@RestController
+public class SpeakerController {
+    private final SpeakerService speakerService;
+
+    public SpeakerController(SpeakerService speakerService) {
+        this.speakerService = speakerService;
+    }
+
+    @GetMapping
+    public String hello(
+            @RequestParam(value = "name", defaultValue = "Мир") String name,
+            @RequestParam(value = "lang", defaultValue = "ru") String lang) {
+        return speakerService.say(name, lang);
+    }
+}

demo/src/main/java/com/example/demo/speaker/configuration/SpeakerConfiguration.java

@@ -0,0 +1,27 @@
+package com.example.demo.speaker.configuration;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.example.demo.speaker.domain.Speaker;
+import com.example.demo.speaker.domain.SpeakerEng;
+import com.example.demo.speaker.domain.SpeakerRus;
+
+@Configuration
+public class SpeakerConfiguration {
+    private final Logger log = LoggerFactory.getLogger(SpeakerConfiguration.class);
+
+    @Bean(value = "ru", initMethod = "init", destroyMethod = "destroy")
+    public SpeakerRus createRusSpeaker() {
+        log.info("Call createRusSpeaker()");
+        return new SpeakerRus();
+    }
+
+    @Bean(value = "en")
+    public Speaker createEngSpeaker() {
+        log.info("Call createEngSpeaker()");
+        return new SpeakerEng();
+    }
+}

demo/src/main/java/com/example/demo/speaker/domain/Speaker.java

@@ -0,0 +1,5 @@
+package com.example.demo.speaker.domain;
+
+public interface Speaker {
+    String say();
+}

demo/src/main/java/com/example/demo/speaker/domain/SpeakerDeu.java

@@ -0,0 +1,28 @@
+package com.example.demo.speaker.domain;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+
+@Component(value = "de")
+public class SpeakerDeu implements Speaker {
+    private final Logger log = LoggerFactory.getLogger(SpeakerDeu.class);
+
+    @Override
+    public String say() {
+        return "Hallo";
+    }
+
+    @PostConstruct
+    public void init() {
+        log.info("SpeakerDeu.init()");
+    }
+
+    @PreDestroy
+    public void destroy() {
+        log.info("SpeakerDeu.destroy()");
+    }
+}

demo/src/main/java/com/example/demo/speaker/domain/SpeakerEng.java

@@ -0,0 +1,26 @@
+package com.example.demo.speaker.domain;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.DisposableBean;
+import org.springframework.beans.factory.InitializingBean;
+
+public class SpeakerEng implements Speaker, InitializingBean, DisposableBean {
+    private final Logger log = LoggerFactory.getLogger(SpeakerEng.class);
+
+    @Override
+    public String say() {
+        return "Hello";
+    }
+
+    @Override
+    public void afterPropertiesSet() {
+        log.info("SpeakerEng.afterPropertiesSet()");
+    }
+
+    @Override
+    public void destroy() {
+        log.info("SpeakerEng.destroy()");
+
+    }
+}

demo/src/main/java/com/example/demo/speaker/domain/SpeakerRus.java

@@ -0,0 +1,21 @@
+package com.example.demo.speaker.domain;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class SpeakerRus implements Speaker {
+    private final Logger log = LoggerFactory.getLogger(SpeakerRus.class);
+
+    @Override
+    public String say() {
+        return "Привет";
+    }
+
+    public void init() {
+        log.info("SpeakerRus.init()");
+    }
+
+    public void destroy() {
+        log.info("SpeakerRus.destroy()");
+    }
+}

demo/src/main/java/com/example/demo/speaker/service/SpeakerService.java

@@ -0,0 +1,20 @@
+package com.example.demo.speaker.service;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.stereotype.Service;
+
+import com.example.demo.speaker.domain.Speaker;
+
+@Service
+public class SpeakerService {
+    private final ApplicationContext applicationContext;
+
+    public SpeakerService(ApplicationContext applicationContext) {
+        this.applicationContext = applicationContext;
+    }
+
+    public String say(String name, String lang) {
+        final Speaker speaker = (Speaker) applicationContext.getBean(lang);
+        return String.format("%s, %s!", speaker.say(), name);
+    }
+}

demo/src/main/java/com/example/demo/stocks/api/StockController.java

@@ -0,0 +1,63 @@
+package com.example.demo.stocks.api;
+
+import java.util.List;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.example.demo.core.configuration.Constants;
+import com.example.demo.stocks.model.StockEntity;
+import com.example.demo.stocks.service.StockService;
+import jakarta.validation.Valid;
+
+@RestController
+@RequestMapping(Constants.API_URL + "/stock")
+public class StockController {
+    private final StockService stockService;
+    private final ModelMapper modelMapper;
+
+    public StockController(StockService stockService, ModelMapper modelMapper) {
+        this.stockService = stockService;
+        this.modelMapper = modelMapper;
+    }
+
+    private StockDto toDto(StockEntity entity) {
+        return modelMapper.map(entity, StockDto.class);
+    }
+
+    private StockEntity toEntity(StockDto dto) {
+        return modelMapper.map(dto, StockEntity.class);
+    }
+
+    @GetMapping
+    public List<StockDto> getAll() {
+        return stockService.getAll().stream().map(this::toDto).toList();
+    }
+
+    @GetMapping("/{id}")
+    public StockDto get(@PathVariable(name = "id") Long id) {
+        return toDto(stockService.get(id));
+    }
+
+    @PostMapping
+    public StockDto create(@RequestBody @Valid StockDto dto) {
+        return toDto(stockService.create(toEntity(dto)));
+    }
+
+    @PutMapping("/{id}")
+    public StockDto update(@PathVariable(name = "id") Long id, @RequestBody StockDto dto) {
+        return toDto(stockService.update(id, toEntity(dto)));
+    }
+
+    @DeleteMapping("/{id}")
+    public StockDto delete(@PathVariable(name = "id") Long id) {
+        return toDto(stockService.delete(id));
+    }
+}

demo/src/main/java/com/example/demo/stocks/api/StockDto.java

@@ -0,0 +1,38 @@
+package com.example.demo.stocks.api;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import jakarta.validation.constraints.NotBlank;
+
+public class StockDto {
+    private Long id;
+    @NotBlank
+    private String name;
+    @NotBlank
+    private Integer value;
+
+    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Integer getValue() {
+        return value;
+    }
+
+    public void setValue(Integer value) {
+        this.value = value;
+    }
+}

demo/src/main/java/com/example/demo/stocks/model/StockEntity.java

@@ -0,0 +1,53 @@
+package com.example.demo.stocks.model;
+
+import java.util.Objects;
+
+import com.example.demo.core.model.BaseEntity;
+
+public class StockEntity extends BaseEntity {
+    private String name;
+    private Integer value;
+
+    public StockEntity() {
+        super();
+    }
+
+    public StockEntity(Long id, String name, Integer value) {
+        super(id);
+        this.name = name;
+        this.value = value;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Integer getValue() {
+        return value;
+    }
+
+    public void setValue(Integer value) {
+        this.value = value;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name, value);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        final StockEntity other = (StockEntity) obj;
+        return Objects.equals(other.getId(), id)
+                && Objects.equals(other.getName(), name)
+                && Objects.equals(other.getValue(), value);
+    }
+}

demo/src/main/java/com/example/demo/stocks/repository/StockRepository.java

@@ -0,0 +1,10 @@
+package com.example.demo.stocks.repository;
+
+import org.springframework.stereotype.Repository;
+
+import com.example.demo.core.repository.MapRepository;
+import com.example.demo.stocks.model.StockEntity;
+
+@Repository
+public class StockRepository extends MapRepository<StockEntity> { 
+}

demo/src/main/java/com/example/demo/stocks/service/StockService.java

@@ -0,0 +1,49 @@
+package com.example.demo.stocks.service;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.stereotype.Service;
+
+import com.example.demo.core.error.NotFoundException;
+import com.example.demo.stocks.model.StockEntity;
+import com.example.demo.stocks.repository.StockRepository;
+
+@Service
+public class StockService {
+    private final StockRepository repository;
+
+    public StockService(StockRepository repository) {
+        this.repository = repository;
+    }
+
+    public Integer getStockValueById(Long stockId) {
+        StockEntity stockEntity = repository.get(stockId);
+        return (stockEntity != null) ? stockEntity.getValue() : null;
+    }
+
+    public List<StockEntity> getAll() {
+        return repository.getAll();
+    }
+
+    public StockEntity get(Long id) {
+        return Optional.ofNullable(repository.get(id))
+                .orElseThrow(() -> new NotFoundException(id));
+    }
+
+    public StockEntity create(StockEntity entity) {
+        return repository.create(entity);
+    }
+
+    public StockEntity update(Long id, StockEntity entity) {
+        final StockEntity existsEntity = get(id);
+        existsEntity.setName(entity.getName());
+        existsEntity.setValue(entity.getValue());
+        return repository.update(existsEntity);
+    }
+
+    public StockEntity delete(Long id) {
+        final StockEntity existsEntity = get(id);
+        return repository.delete(existsEntity);
+    }
+}

demo/src/main/java/com/example/demo/types/api/TypeController.java

@@ -0,0 +1,64 @@
+package com.example.demo.types.api;
+
+import java.util.List;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.example.demo.core.configuration.Constants;
+import com.example.demo.types.model.TypeEntity;
+import com.example.demo.types.service.TypeService;
+
+import jakarta.validation.Valid;
+
+@RestController
+@RequestMapping(Constants.API_URL + "/type")
+public class TypeController {
+    private final TypeService typeService;
+    private final ModelMapper modelMapper;
+
+    public TypeController(TypeService typeService, ModelMapper modelMapper) {
+        this.typeService = typeService;
+        this.modelMapper = modelMapper;
+    }
+
+    private TypeDto toDto(TypeEntity entity) {
+        return modelMapper.map(entity, TypeDto.class);
+    }
+
+    private TypeEntity toEntity(TypeDto dto) {
+        return modelMapper.map(dto, TypeEntity.class);
+    }
+
+    @GetMapping
+    public List<TypeDto> getAll() {
+        return typeService.getAll().stream().map(this::toDto).toList();
+    }
+
+    @GetMapping("/{id}")
+    public TypeDto get(@PathVariable(name = "id") Long id) {
+        return toDto(typeService.get(id));
+    }
+
+    @PostMapping
+    public TypeDto create(@RequestBody @Valid TypeDto dto) {
+        return toDto(typeService.create(toEntity(dto)));
+    }
+
+    @PutMapping("/{id}")
+    public TypeDto update(@PathVariable(name = "id") Long id, @RequestBody TypeDto dto) {
+        return toDto(typeService.update(id, toEntity(dto)));
+    }
+
+    @DeleteMapping("/{id}")
+    public TypeDto delete(@PathVariable(name = "id") Long id) {
+        return toDto(typeService.delete(id));
+    }
+}

demo/src/main/java/com/example/demo/types/api/TypeDto.java

@@ -0,0 +1,28 @@
+package com.example.demo.types.api;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import jakarta.validation.constraints.NotBlank;
+
+public class TypeDto {
+    private Long id;
+    @NotBlank
+    private String name;
+
+    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

demo/src/main/java/com/example/demo/types/model/TypeEntity.java

@@ -0,0 +1,42 @@
+package com.example.demo.types.model;
+
+import java.util.Objects;
+
+import com.example.demo.core.model.BaseEntity;
+
+public class TypeEntity extends BaseEntity {
+    private String name;
+
+    public TypeEntity() {
+        super();
+    }
+
+    public TypeEntity(Long id, String name) {
+        super(id);
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        final TypeEntity other = (TypeEntity) obj;
+        return Objects.equals(other.getId(), id)
+                && Objects.equals(other.getName(), name);
+    }
+}

demo/src/main/java/com/example/demo/types/repository/TypeRepository.java

@@ -0,0 +1,10 @@
+package com.example.demo.types.repository;
+
+import org.springframework.stereotype.Repository;
+
+import com.example.demo.core.repository.MapRepository;
+import com.example.demo.types.model.TypeEntity;
+
+@Repository
+public class TypeRepository extends MapRepository<TypeEntity> {
+}

demo/src/main/java/com/example/demo/types/service/TypeService.java

@@ -0,0 +1,43 @@
+package com.example.demo.types.service;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.stereotype.Service;
+
+import com.example.demo.core.error.NotFoundException;
+import com.example.demo.types.model.TypeEntity;
+import com.example.demo.types.repository.TypeRepository;
+
+@Service
+public class TypeService {
+    private final TypeRepository repository;
+
+    public TypeService(TypeRepository repository) {
+        this.repository = repository;
+    }
+
+    public List<TypeEntity> getAll() {
+        return repository.getAll();
+    }
+
+    public TypeEntity get(Long id) {
+        return Optional.ofNullable(repository.get(id))
+                .orElseThrow(() -> new NotFoundException(id));
+    }
+
+    public TypeEntity create(TypeEntity entity) {
+        return repository.create(entity);
+    }
+
+    public TypeEntity update(Long id, TypeEntity entity) {
+        final TypeEntity existsEntity = get(id);
+        existsEntity.setName(entity.getName());
+        return repository.update(existsEntity);
+    }
+
+    public TypeEntity delete(Long id) {
+        final TypeEntity existsEntity = get(id);
+        return repository.delete(existsEntity);
+    }
+}

demo/src/main/java/com/example/demo/users/api/UserController.java

@@ -0,0 +1,64 @@
+package com.example.demo.users.api;
+
+import java.util.List;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.example.demo.core.configuration.Constants;
+import com.example.demo.users.model.UserEntity;
+import com.example.demo.users.service.UserService;
+
+import jakarta.validation.Valid;
+
+@RestController
+@RequestMapping(Constants.API_URL + "/user")
+public class UserController {
+    private final UserService userService;
+    private final ModelMapper modelMapper;
+
+    public UserController(UserService userService, ModelMapper modelMapper) {
+        this.userService = userService;
+        this.modelMapper = modelMapper;
+    }
+
+    private UserDto toDto(UserEntity entity) {
+        return modelMapper.map(entity, UserDto.class);
+    }
+
+    private UserEntity toEntity(UserDto dto) {
+        return modelMapper.map(dto, UserEntity.class);
+    }
+
+    @GetMapping
+    public List<UserDto> getAll() {
+        return userService.getAll().stream().map(this::toDto).toList();
+    }
+
+    @GetMapping("/{id}")
+    public UserDto get(@PathVariable(name = "id") Long id) {
+        return toDto(userService.get(id));
+    }
+
+    @PostMapping
+    public UserDto create(@RequestBody @Valid UserDto dto) {
+        return toDto(userService.create(toEntity(dto)));
+    }
+
+    @PutMapping("/{id}")
+    public UserDto update(@PathVariable(name = "id") Long id, @RequestBody UserDto dto) {
+        return toDto(userService.update(id, toEntity(dto)));
+    }
+
+    @DeleteMapping("/{id}")
+    public UserDto delete(@PathVariable(name = "id") Long id) {
+        return toDto(userService.delete(id));
+    }
+}

demo/src/main/java/com/example/demo/users/api/UserDto.java

@@ -0,0 +1,52 @@
+package com.example.demo.users.api;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+
+public class UserDto {
+    private Long id;
+    @NotNull
+    @Min(1)
+    private String name;
+    @NotNull
+    @Min(1)
+    private String email;
+    @NotNull
+    @Min(1)
+    private String password;
+
+    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+}

demo/src/main/java/com/example/demo/users/model/UserEntity.java

@@ -0,0 +1,65 @@
+package com.example.demo.users.model;
+
+import java.util.Objects;
+
+import com.example.demo.core.model.BaseEntity;
+
+public class UserEntity extends BaseEntity {
+
+    private String name;
+    private String email;
+    private String password;
+
+    public UserEntity() {
+        super();
+    }
+
+    public UserEntity(Long id, String name, String email, String password) {
+        super(id);
+        this.name = name;
+        this.email = email;
+        this.password = password;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name, email, password);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        final UserEntity other = (UserEntity) obj;
+        return Objects.equals(other.getId(), id)
+                && Objects.equals(other.getName(), name)
+                && Objects.equals(other.getEmail(), email)
+                && Objects.equals(other.getPassword(), password);
+    }
+}

demo/src/main/java/com/example/demo/users/repository/UserRepository.java

@@ -0,0 +1,10 @@
+package com.example.demo.users.repository;
+
+import org.springframework.stereotype.Repository;
+
+import com.example.demo.core.repository.MapRepository;
+import com.example.demo.users.model.UserEntity;
+
+@Repository
+public class UserRepository extends MapRepository<UserEntity> {
+}

demo/src/main/java/com/example/demo/users/service/UserService.java

@@ -0,0 +1,45 @@
+package com.example.demo.users.service;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.stereotype.Service;
+
+import com.example.demo.core.error.NotFoundException;
+import com.example.demo.users.model.UserEntity;
+import com.example.demo.users.repository.UserRepository;
+
+@Service
+public class UserService {
+    private final UserRepository repository;
+
+    public UserService(UserRepository repository) {
+        this.repository = repository;
+    }
+
+    public List<UserEntity> getAll() {
+        return repository.getAll();
+    }
+
+    public UserEntity get(Long id) {
+        return Optional.ofNullable(repository.get(id))
+                .orElseThrow(() -> new NotFoundException(id));
+    }
+
+    public UserEntity create(UserEntity entity) {
+        return repository.create(entity);
+    }
+
+    public UserEntity update(Long id, UserEntity entity) {
+        final UserEntity existsEntity = get(id);
+        existsEntity.setName(entity.getName());
+        existsEntity.setEmail(entity.getEmail());
+        existsEntity.setPassword(entity.getPassword());
+        return repository.update(existsEntity);
+    }
+
+    public UserEntity delete(Long id) {
+        final UserEntity existsEntity = get(id);
+        return repository.delete(existsEntity);
+    }
+}

demo/src/main/resources/application.properties

@@ -0,0 +1 @@
+

demo/src/test/java/com/example/demo/ItemServiceTests.java

@@ -0,0 +1,83 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.MethodOrderer.OrderAnnotation;
+import org.junit.jupiter.api.Order;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import com.example.demo.core.error.NotFoundException;
+import com.example.demo.items.model.ItemEntity;
+import com.example.demo.items.service.ItemService;
+import com.example.demo.stocks.model.StockEntity;
+import com.example.demo.stocks.service.StockService;
+import com.example.demo.types.model.TypeEntity;
+import com.example.demo.types.service.TypeService;
+
+@SpringBootTest
+@TestMethodOrder(OrderAnnotation.class)
+class ItemServiceTests {
+    @Autowired
+    private ItemService itemService;
+
+    @Autowired
+    private TypeService typeService;
+
+    @Autowired
+    private StockService stockService;
+
+    @Test
+    void getTest() {
+        Assertions.assertThrows(NotFoundException.class, () -> itemService.get(0L));
+    }
+
+    @Test
+    @Order(1)
+    void createTest() {
+        final TypeEntity type = typeService.create(new TypeEntity(null, "Пепперони"));
+        final StockEntity stock = stockService.create(new StockEntity(null, "Две по цене одной", 50));
+
+        itemService.create(new ItemEntity(null, type, 399.00, 20, stock));
+        itemService.create(new ItemEntity(null, type, 599.00, 3, stock));
+
+        final ItemEntity last = itemService.create(new ItemEntity(null, type, 1500.00, 6, stock));
+
+        Assertions.assertEquals(3, itemService.getAll(0L).size());
+        Assertions.assertEquals(last, itemService.get(3L));
+    }
+
+    @Test
+    @Order(2)
+    void updateTest() {
+        final TypeEntity type = typeService.create(new TypeEntity(null, "Мясная"));
+        final StockEntity stock = stockService.create(new StockEntity(null, "День рождения", 25));
+
+        final ItemEntity entity = itemService.get(3L);
+        final Double oldPrice = entity.getPrice();
+
+        final ItemEntity newEntity = itemService.update(3L, new ItemEntity(null, type, 200.00, 6, stock));
+
+        Assertions.assertEquals(3, itemService.getAll(0L).size());
+        Assertions.assertEquals(newEntity, itemService.get(3L));
+        Assertions.assertEquals(200.00, newEntity.getPrice());
+        Assertions.assertNotEquals(oldPrice, newEntity.getPrice());
+    }
+
+    @Test
+    @Order(3)
+    void deleteTest() {
+        itemService.delete(3L);
+
+        Assertions.assertEquals(2, itemService.getAll(0L).size());
+        Assertions.assertThrows(NotFoundException.class, () -> itemService.get(3L));
+
+        final TypeEntity type = typeService.create(new TypeEntity(null, "Пепперони"));
+        final StockEntity stock = stockService.create(new StockEntity(null, "День рождения", 25));
+        final ItemEntity newEntity = itemService.create(new ItemEntity(null, type, 499.00, 10, stock));
+
+        Assertions.assertEquals(3, itemService.getAll(0L).size());
+        Assertions.assertEquals(4L, newEntity.getId());
+    }
+}

demo/src/test/java/com/example/demo/SpeakerSrviceTests.java

@@ -0,0 +1,38 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import com.example.demo.speaker.service.SpeakerService;
+
+@SpringBootTest
+class SpeakerSrviceTests {
+    @Autowired
+    SpeakerService speakerService;
+
+    @Test
+    void testSpeakerRus() {
+        final String res = speakerService.say("Мир", "ru");
+        Assertions.assertEquals("Привет, Мир!", res);
+    }
+
+    @Test
+    void testSpeakerEng() {
+        final String res = speakerService.say("World", "en");
+        Assertions.assertEquals("Hello, World!", res);
+    }
+
+    @Test
+    void testSpeakerDeu() {
+        final String res = speakerService.say("Welt", "de");
+        Assertions.assertEquals("Hallo, Welt!", res);
+    }
+
+    @Test
+    void testSpeakerErrorWired() {
+        Assertions.assertThrows(NoSuchBeanDefinitionException.class, () -> speakerService.say("Мир", "rus"));
+    }
+}

demo/src/test/java/com/example/demo/StockServiceTests.java

@@ -0,0 +1,62 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.MethodOrderer.OrderAnnotation;
+import org.junit.jupiter.api.Order;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import com.example.demo.core.error.NotFoundException;
+import com.example.demo.stocks.model.StockEntity;
+import com.example.demo.stocks.service.StockService;
+
+@SpringBootTest
+@TestMethodOrder(OrderAnnotation.class)
+class StockServiceTests {
+    @Autowired
+    private StockService stockService;
+
+    @Test
+    void getTest() {
+        Assertions.assertThrows(NotFoundException.class, () -> stockService.get(0L));
+    }
+
+    @Test
+    @Order(1)
+    void createTest() {
+        stockService.create(new StockEntity(null, "Stock 1", 50));
+		stockService.create(new StockEntity(null, "Stock 2", 0));
+		final StockEntity last = stockService.create(new StockEntity(null, "Stock 3", 25));
+		Assertions.assertEquals(6, stockService.getAll().size());
+		Assertions.assertEquals(last, stockService.get(6L));
+    }
+
+    @Test
+    @Order(2)
+    void updateTest() {
+        final String test = "TEST";
+        final Integer valueTest = 15;
+		final StockEntity entity = stockService.get(3L);
+		final String oldName = entity.getName();
+		final StockEntity newEntity = stockService.update(3L, new StockEntity(1L, test, valueTest));
+		Assertions.assertEquals(6, stockService.getAll().size());
+		Assertions.assertEquals(newEntity, stockService.get(3L));
+		Assertions.assertEquals(test, newEntity.getName());
+		Assertions.assertNotEquals(oldName, newEntity.getName());
+    }
+
+    @Test
+    @Order(3)
+    void deleteTest() {
+        stockService.delete(3L);
+		Assertions.assertEquals(5, stockService.getAll().size());
+		final StockEntity last = stockService.get(5L);
+		Assertions.assertEquals(5L, last.getId());
+
+		final StockEntity newEntity = stockService.create(new StockEntity(null, "TEST", 15));
+		Assertions.assertEquals(6, stockService.getAll().size());
+		Assertions.assertEquals(7L, newEntity.getId());
+    }
+}

demo/src/test/java/com/example/demo/TypeServiceTests.java

@@ -0,0 +1,61 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.MethodOrderer.OrderAnnotation;
+import org.junit.jupiter.api.Order;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import com.example.demo.core.error.NotFoundException;
+import com.example.demo.types.model.TypeEntity;
+import com.example.demo.types.service.TypeService;
+
+@SpringBootTest
+@TestMethodOrder(OrderAnnotation.class)
+class TypeServiceTests {
+	@Autowired
+	private TypeService typeService;
+
+	@Test
+	void getTest() {
+		Assertions.assertThrows(NotFoundException.class, () -> typeService.get(0L));
+	}
+
+	@Test
+	@Order(1)
+	void createTest() {
+		typeService.create(new TypeEntity(null, "Пепперони"));
+		typeService.create(new TypeEntity(null, "Мясная"));
+		final TypeEntity last = typeService.create(new TypeEntity(null, "Сырная"));
+		Assertions.assertEquals(3, typeService.getAll().size());
+		Assertions.assertEquals(last, typeService.get(3L));
+	}
+
+	@Test
+	@Order(2)
+	void updateTest() {
+		final String test = "TEST";
+		final TypeEntity entity = typeService.get(3L);
+		final String oldName = entity.getName();
+		final TypeEntity newEntity = typeService.update(3L, new TypeEntity(1L, test));
+		Assertions.assertEquals(3, typeService.getAll().size());
+		Assertions.assertEquals(newEntity, typeService.get(3L));
+		Assertions.assertEquals(test, newEntity.getName());
+		Assertions.assertNotEquals(oldName, newEntity.getName());
+	}
+
+	@Test
+	@Order(3)
+	void deleteTest() {
+		typeService.delete(3L);
+		Assertions.assertEquals(2, typeService.getAll().size());
+		final TypeEntity last = typeService.get(2L);
+		Assertions.assertEquals(2L, last.getId());
+
+		final TypeEntity newEntity = typeService.create(new TypeEntity(null, "Сырная"));
+		Assertions.assertEquals(3, typeService.getAll().size());
+		Assertions.assertEquals(4L, newEntity.getId());
+	}
+}

demo/src/test/java/com/example/demo/UserServiceTests.java

@@ -0,0 +1,63 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.MethodOrderer.OrderAnnotation;
+import org.junit.jupiter.api.Order;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import com.example.demo.core.error.NotFoundException;
+import com.example.demo.users.model.UserEntity;
+import com.example.demo.users.service.UserService;
+
+@SpringBootTest
+@TestMethodOrder(OrderAnnotation.class)
+class UserServiceTests {
+    @Autowired
+    private UserService userService;
+
+    @Test
+    void getTest() {
+        Assertions.assertThrows(NotFoundException.class, () -> userService.get(0L));
+    }
+
+    @Test
+    @Order(1)
+    void createTest() {
+        userService.create(new UserEntity(null, "User 1", "test@test", "qwerty"));
+		userService.create(new UserEntity(null, "User 2", "test1@test1", "12345678"));
+		final UserEntity last = userService.create(new UserEntity(null, "User 3", "test2@test2", "mrgurgnugrn"));
+		Assertions.assertEquals(3, userService.getAll().size());
+		Assertions.assertEquals(last, userService.get(3L));
+    }
+
+    @Test
+    @Order(2)
+    void updateTest() {
+        final String test = "TEST";
+        final String email = "effee2@bfbrb.com";
+        final String password = "rbgirgrbunrgu9nrbu9";
+		final UserEntity entity = userService.get(3L);
+		final String oldName = entity.getName();
+		final UserEntity newEntity = userService.update(3L, new UserEntity(1L, test, email, password));
+		Assertions.assertEquals(3, userService.getAll().size());
+		Assertions.assertEquals(newEntity, userService.get(3L));
+		Assertions.assertEquals(test, newEntity.getName());
+		Assertions.assertNotEquals(oldName, newEntity.getName());
+    }
+
+    @Test
+    @Order(3)
+    void deleteTest() {
+        userService.delete(3L);
+		Assertions.assertEquals(2, userService.getAll().size());
+		final UserEntity last = userService.get(2L);
+		Assertions.assertEquals(2L, last.getId());
+
+		final UserEntity newEntity = userService.create(new UserEntity(null, "TEST", "ortrigr@rbirirrgi", "rgkrgimrgirg"));
+		Assertions.assertEquals(3, userService.getAll().size());
+		Assertions.assertEquals(4L, newEntity.getId());
+    }
+}