diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..549e00a2a96fa9d7c5dbc9859664a78d980158c2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
diff --git a/.mvn/wrapper/maven-wrapper.jar b/.mvn/wrapper/maven-wrapper.jar
new file mode 100644
index 0000000000000000000000000000000000000000..c1dd12f17644411d6e840bd5a10c6ecda0175f18
Binary files /dev/null and b/.mvn/wrapper/maven-wrapper.jar differ
diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000000000000000000000000000000000000..b74bf7fcd640440a49eb602158547670ef907772
--- /dev/null
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.6/apache-maven-3.8.6-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar
diff --git a/mvnw b/mvnw
new file mode 100644
index 0000000000000000000000000000000000000000..8a8fb2282df5b8f7263470a5a2dc0e196f35f35f
--- /dev/null
+++ b/mvnw
@@ -0,0 +1,316 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you 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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+# JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+# M2_HOME - location of maven2's installed home dir
+# MAVEN_OPTS - parameters passed to the Java VM when running Maven
+# e.g. to debug Maven itself, use
+# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+# MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+ if [ -f /usr/local/etc/mavenrc ] ; then
+ . /usr/local/etc/mavenrc
+ fi
+
+ if [ -f /etc/mavenrc ] ; then
+ . /etc/mavenrc
+ fi
+
+ if [ -f "$HOME/.mavenrc" ] ; then
+ . "$HOME/.mavenrc"
+ fi
+
+fi
+
+# OS specific support. $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+ CYGWIN*) cygwin=true ;;
+ MINGW*) mingw=true;;
+ Darwin*) darwin=true
+ # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+ # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+ if [ -z "$JAVA_HOME" ]; then
+ if [ -x "/usr/libexec/java_home" ]; then
+ export JAVA_HOME="`/usr/libexec/java_home`"
+ else
+ export JAVA_HOME="/Library/Java/Home"
+ fi
+ fi
+ ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+ if [ -r /etc/gentoo-release ] ; then
+ JAVA_HOME=`java-config --jre-home`
+ fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+ ## resolve links - $0 may be a link to maven's home
+ PRG="$0"
+
+ # need this for relative symlinks
+ while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG="`dirname "$PRG"`/$link"
+ fi
+ done
+
+ saveddir=`pwd`
+
+ M2_HOME=`dirname "$PRG"`/..
+
+ # make it fully qualified
+ M2_HOME=`cd "$M2_HOME" && pwd`
+
+ cd "$saveddir"
+ # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --unix "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME="`(cd "$M2_HOME"; pwd)`"
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+ javaExecutable="`which javac`"
+ if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+ # readlink(1) is not available as standard on Solaris 10.
+ readLink=`which readlink`
+ if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+ if $darwin ; then
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+ else
+ javaExecutable="`readlink -f \"$javaExecutable\"`"
+ fi
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+ JAVA_HOME="$javaHome"
+ export JAVA_HOME
+ fi
+ fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+ 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
+ else
+ JAVACMD="`\\unset -f command; \\command -v java`"
+ fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+ echo "Error: JAVA_HOME is not defined correctly." >&2
+ echo " We cannot execute $JAVACMD" >&2
+ exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+ echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+ if [ -z "$1" ]
+ then
+ echo "Path not specified to find_maven_basedir"
+ return 1
+ fi
+
+ basedir="$1"
+ wdir="$1"
+ while [ "$wdir" != '/' ] ; do
+ if [ -d "$wdir"/.mvn ] ; then
+ basedir=$wdir
+ break
+ fi
+ # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+ if [ -d "${wdir}" ]; then
+ wdir=`cd "$wdir/.."; pwd`
+ fi
+ # end of workaround
+ done
+ echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+ if [ -f "$1" ]; then
+ echo "$(tr -s '\n' ' ' < "$1")"
+ fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+ exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found .mvn/wrapper/maven-wrapper.jar"
+ fi
+else
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+ fi
+ if [ -n "$MVNW_REPOURL" ]; then
+ jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ else
+ jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ fi
+ while IFS="=" read key value; do
+ case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+ esac
+ done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Downloading from: $jarUrl"
+ fi
+ wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+ if $cygwin; then
+ wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+ fi
+
+ if command -v wget > /dev/null; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found wget ... using wget"
+ fi
+ if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+ wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+ else
+ wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+ fi
+ elif command -v curl > /dev/null; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found curl ... using curl"
+ fi
+ if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+ curl -o "$wrapperJarPath" "$jarUrl" -f
+ else
+ curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+ fi
+
+ else
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Falling back to using Java to download"
+ fi
+ javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+ # For Cygwin, switch paths to Windows format before running javac
+ if $cygwin; then
+ javaClass=`cygpath --path --windows "$javaClass"`
+ fi
+ if [ -e "$javaClass" ]; then
+ if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo " - Compiling MavenWrapperDownloader.java ..."
+ fi
+ # Compiling the Java class
+ ("$JAVA_HOME/bin/javac" "$javaClass")
+ fi
+ if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+ # Running the downloader
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo " - Running MavenWrapperDownloader.java ..."
+ fi
+ ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+ fi
+ fi
+ fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+ echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --path --windows "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+ [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+ MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+ $MAVEN_OPTS \
+ $MAVEN_DEBUG_OPTS \
+ -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+ "-Dmaven.home=${M2_HOME}" \
+ "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+ ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/mvnw.cmd b/mvnw.cmd
new file mode 100644
index 0000000000000000000000000000000000000000..1d8ab018eaf11d9b3a4a90e7818ace373dfbb380
--- /dev/null
+++ b/mvnw.cmd
@@ -0,0 +1,188 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. 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,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+ IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Found %WRAPPER_JAR%
+ )
+) else (
+ if not "%MVNW_REPOURL%" == "" (
+ SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ )
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Couldn't find %WRAPPER_JAR%, downloading it ...
+ echo Downloading from: %DOWNLOAD_URL%
+ )
+
+ powershell -Command "&{"^
+ "$webclient = new-object System.Net.WebClient;"^
+ "if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+ "$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+ "}"^
+ "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+ "}"
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Finished downloading %WRAPPER_JAR%
+ )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+ %JVM_CONFIG_MAVEN_PROPS% ^
+ %MAVEN_OPTS% ^
+ %MAVEN_DEBUG_OPTS% ^
+ -classpath %WRAPPER_JAR% ^
+ "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+ %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..4183f8d27239b10cd694e183560805cca25f8f4c
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.springframework.boot</groupId>
+ <artifactId>spring-boot-starter-parent</artifactId>
+ <version>3.0.1</version>
+ <relativePath/> <!-- lookup parent from repository -->
+ </parent>
+ <groupId>com.nisum.poc</groupId>
+ <artifactId>Webflux</artifactId>
+ <version>0.0.1-SNAPSHOT</version>
+ <name>Webflux</name>
+ <description>Demo project for Spring Boot webFlux</description>
+ <properties>
+ <java.version>17</java.version>
+ </properties>
+ <dependencies>
+ <dependency>
+ <groupId>org.springframework.boot</groupId>
+ <artifactId>spring-boot-starter-data-mongodb-reactive</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.springframework.boot</groupId>
+ <artifactId>spring-boot-starter-webflux</artifactId>
+ </dependency>
+
+ <dependency>
+ <groupId>org.projectlombok</groupId>
+ <artifactId>lombok</artifactId>
+ <optional>true</optional>
+ </dependency>
+ <dependency>
+ <groupId>org.springframework.boot</groupId>
+ <artifactId>spring-boot-starter-test</artifactId>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>io.projectreactor</groupId>
+ <artifactId>reactor-test</artifactId>
+ <scope>test</scope>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.springframework.boot</groupId>
+ <artifactId>spring-boot-maven-plugin</artifactId>
+ <configuration>
+ <excludes>
+ <exclude>
+ <groupId>org.projectlombok</groupId>
+ <artifactId>lombok</artifactId>
+ </exclude>
+ </excludes>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+
+</project>
diff --git a/src/main/java/com/nisum/poc/Webflux/WebFluxApplication.java b/src/main/java/com/nisum/poc/Webflux/WebFluxApplication.java
new file mode 100644
index 0000000000000000000000000000000000000000..e1852f8dbceb4d210890731d3a6acca5ed135915
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/WebFluxApplication.java
@@ -0,0 +1,20 @@
+package com.nisum.poc.Webflux;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.data.mongodb.repository.config.EnableReactiveMongoRepositories;
+import org.springframework.stereotype.Component;
+
+@SpringBootApplication
+@ComponentScan(basePackages = "com.nisum")
+@EntityScan("com.nisum.poc")
+//@EnableReactiveMongoRepositories(basePackages = "com.nisum.poc")
+public class WebFluxApplication {
+
+ public static void main(String[] args) {
+ SpringApplication.run(WebFluxApplication.class, args);
+ }
+
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/config/MongoDBConfiguration.java b/src/main/java/com/nisum/poc/Webflux/config/MongoDBConfiguration.java
new file mode 100644
index 0000000000000000000000000000000000000000..1d958f0cb2a4da7814085a59b1b5e3274dd30204
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/config/MongoDBConfiguration.java
@@ -0,0 +1,38 @@
+package com.nisum.poc.Webflux.config;
+
+import com.mongodb.reactivestreams.client.MongoClient;
+import com.mongodb.reactivestreams.client.MongoClients;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.mongodb.config.AbstractReactiveMongoConfiguration;
+import org.springframework.data.mongodb.core.ReactiveMongoTemplate;
+import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
+import org.springframework.data.mongodb.repository.config.EnableReactiveMongoRepositories;
+
+@Configuration
+@EnableReactiveMongoRepositories(basePackages = "com.nisum")
+public class MongoDBConfiguration extends AbstractReactiveMongoConfiguration {
+
+
+ @Value("${db.name}")
+ private String dbname;
+
+ @Value("${db.host}")
+ private String dbHost;
+
+
+ @Override
+ public MongoClient reactiveMongoClient() {
+ return MongoClients.create();
+ }
+ @Override
+ protected String getDatabaseName() {
+ return dbname ;
+ }
+ @Bean
+ public ReactiveMongoTemplate reactiveMongoTemplate(){
+ return new ReactiveMongoTemplate(reactiveMongoClient(),getDatabaseName());
+
+ }
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/config/WebFluxConfig.java b/src/main/java/com/nisum/poc/Webflux/config/WebFluxConfig.java
new file mode 100644
index 0000000000000000000000000000000000000000..5f7d1a17181fb15a2705a488bc75059e37b0a3fb
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/config/WebFluxConfig.java
@@ -0,0 +1,11 @@
+package com.nisum.poc.Webflux.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.stereotype.Component;
+import org.springframework.web.reactive.config.EnableWebFlux;
+import org.springframework.web.reactive.config.WebFluxConfigurer;
+
+@Configuration
+@EnableWebFlux
+public class WebFluxConfig implements WebFluxConfigurer {
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/config/WebclientEx.java b/src/main/java/com/nisum/poc/Webflux/config/WebclientEx.java
new file mode 100644
index 0000000000000000000000000000000000000000..bd865a52366a03da2b963055bd96c4ad6c65cd7b
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/config/WebclientEx.java
@@ -0,0 +1,17 @@
+package com.nisum.poc.Webflux.config;
+
+import com.nisum.poc.Webflux.entity.Student;
+import io.netty.handler.codec.http.websocketx.extensions.compression.WebSocketClientCompressionHandler;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.MediaType;
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.core.publisher.Flux;
+
+@Configuration
+public class WebclientEx {
+
+ WebClient client = WebClient.create("http://localhost:4042");
+ public Flux<Student> getAllStudents(){
+ return client.get().uri("/allStudents").accept(MediaType.APPLICATION_JSON).retrieve().bodyToFlux(Student.class);
+ }
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/controller/AddressController.java b/src/main/java/com/nisum/poc/Webflux/controller/AddressController.java
new file mode 100644
index 0000000000000000000000000000000000000000..79d3eee736f4098f850bdcb217331c6133904863
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/controller/AddressController.java
@@ -0,0 +1,32 @@
+package com.nisum.poc.Webflux.controller;
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.model.AddressPayload;
+import com.nisum.poc.Webflux.service.IAddressService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@RestController
+public class AddressController {
+ @Autowired
+ IAddressService addressService;
+
+
+ @PostMapping("/saveaddress")
+ public Mono<Address> createAddress(@RequestBody Address address){
+ return addressService.createAddress(address);
+
+ }
+
+ @GetMapping("/alladdress")
+ public Flux<Address> getAllAddress(){
+ return addressService.getAllAddress();
+
+ }
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/controller/StudentController.java b/src/main/java/com/nisum/poc/Webflux/controller/StudentController.java
new file mode 100644
index 0000000000000000000000000000000000000000..1879ec878314cf1d34cb368fe03b9bda2943f7fb
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/controller/StudentController.java
@@ -0,0 +1,80 @@
+package com.nisum.poc.Webflux.controller;
+
+import com.nisum.poc.Webflux.entity.Student;
+import com.nisum.poc.Webflux.entity.Subject;
+import com.nisum.poc.Webflux.model.StudentPayload;
+import com.nisum.poc.Webflux.service.IStudentService;
+import com.nisum.poc.Webflux.service.ISubjectsService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+import java.time.Duration;
+import java.util.Arrays;
+import java.util.List;
+
+@RestController
+public class StudentController {
+
+ @Autowired
+ IStudentService studentService;
+
+ @PostMapping("/saveStudent")
+ public Mono<Student> creatStudent(@RequestBody Student student){
+ return studentService.createStudent(student);
+
+ }
+
+ @GetMapping("/allStudents")
+ public Flux<StudentPayload> getAllStudents(){
+ return studentService.getAllStudents();
+
+ }
+ @GetMapping("/concatEx")
+ public Flux<String> concatFlux(){
+ return studentService.concat();
+
+ }
+
+ @GetMapping("/mergeEx")
+ public Flux<String> mergeFlux(){
+ return studentService.merge().log();
+
+ }
+ @GetMapping("/zipEx")
+ public Flux<Integer> zip(){
+ return studentService.combineWithZip();
+ }
+
+ @GetMapping("/zipWithEx")
+ public Flux<Integer> zipWith(){
+ Flux<Integer> evenNumbers = Flux
+ .range(1, 5)
+ .filter(x -> x % 2 == 0); // i.e. 2, 4
+
+ Flux<Integer> oddNumbers = Flux
+ .range(1, 5)
+ .filter(x -> x % 2 > 0);//1,3,5
+ Flux<Integer> concatIntegers = Flux.concat(evenNumbers,oddNumbers);
+ Flux<Integer> mergefIntegers = Flux.merge(evenNumbers,oddNumbers);
+ Flux<Integer> zipIntegers = Flux.zip(evenNumbers,oddNumbers,(a,b)->a*b).log();
+ //flux to mono last(),next(),elementAt(1), haselements() haselement(1),
+ Mono<Integer> integerMono = oddNumbers.next();
+ Flux<Integer> zipwithIntegers = evenNumbers.zipWith(oddNumbers,(a,b)->a*b);//2,12
+ return zipwithIntegers;
+ }
+
+ @GetMapping("/flatMap")
+ public Flux<String> transformUsingFlatMap() {
+ List<String> names = Arrays.asList("google ", "abc", "fb", " stackoverflow"," bhanuchander"," reddy");
+ Flux<String> namess = Flux.fromIterable(names).filter(name -> name.length() >= 5).flatMap(name -> {
+ return Flux.just(name.toUpperCase()).
+ delayElements(Duration.ofMillis(151)).log();
+ });
+ return namess;
+ }
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/controller/SubjectsController.java b/src/main/java/com/nisum/poc/Webflux/controller/SubjectsController.java
new file mode 100644
index 0000000000000000000000000000000000000000..c2318252826bdeec9d0058bda6493c06e0327e9d
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/controller/SubjectsController.java
@@ -0,0 +1,32 @@
+package com.nisum.poc.Webflux.controller;
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.entity.Subject;
+import com.nisum.poc.Webflux.service.ISubjectsService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@RestController
+public class SubjectsController {
+
+ @Autowired
+ ISubjectsService subjectsService;
+
+ @PostMapping("/savesubject")
+ public Mono<Subject> creatSubject(@RequestBody Subject subject){
+ return subjectsService.createSuject(subject);
+
+ }
+
+ @GetMapping("/allsubjects")
+ public Flux<Subject> getAllSubjects(){
+ return subjectsService.getAllSubjects();
+
+ }
+
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/entity/Address.java b/src/main/java/com/nisum/poc/Webflux/entity/Address.java
new file mode 100644
index 0000000000000000000000000000000000000000..8f85b4067a40501e4438c7e4b432f804e110e971
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/entity/Address.java
@@ -0,0 +1,28 @@
+package com.nisum.poc.Webflux.entity;
+
+import lombok.*;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.annotation.Transient;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Setter
+@Getter
+@Document
+@Builder
+//@Scope(scopeName="request",proxyMode = ScopedProxyMode.TARGET_CLASS)
+public class Address {
+
+ @Transient
+ public static final String SEQUENCE_NAME = "users_sequence";
+ @Id
+ private Long id;
+ private String address;
+ private String city;
+ private String pinCode;
+ private String addressType;
+ private Long studentId;
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/entity/Student.java b/src/main/java/com/nisum/poc/Webflux/entity/Student.java
new file mode 100644
index 0000000000000000000000000000000000000000..d3af89b84a2e4a3b618d42e8288d4fdb77002ffc
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/entity/Student.java
@@ -0,0 +1,32 @@
+package com.nisum.poc.Webflux.entity;
+
+import lombok.*;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.annotation.Transient;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+import java.util.List;
+
+@Document
+@AllArgsConstructor
+@NoArgsConstructor
+@Setter
+@Getter
+@Builder
+//@Scope(scopeName="request",proxyMode = ScopedProxyMode.TARGET_CLASS)
+public class Student {
+
+ @Transient
+ public static final String SEQUENCE_NAME = "users_sequence";
+ @Id
+ private Long id;
+ private String firstName;
+ private String lastName;
+ private Integer age;
+ private List<String> phoneNumbers;
+ private List<Address> address;
+ private List<Subject> subjects;
+
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/entity/Subject.java b/src/main/java/com/nisum/poc/Webflux/entity/Subject.java
new file mode 100644
index 0000000000000000000000000000000000000000..8d75d3a5ee266d27430b0bd01368af60b076838a
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/entity/Subject.java
@@ -0,0 +1,29 @@
+package com.nisum.poc.Webflux.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.annotation.Transient;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Data
+@Document
+@Builder
+//@Scope(scopeName="request",proxyMode = ScopedProxyMode.TARGET_CLASS)
+public class Subject {
+
+ @Transient
+ public static final String SEQUENCE_NAME = "users_sequence";
+ @Id
+ private Long id;
+ private String subjectName;
+ private Long studentId;
+
+
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/model/AddressPayload.java b/src/main/java/com/nisum/poc/Webflux/model/AddressPayload.java
new file mode 100644
index 0000000000000000000000000000000000000000..ffb4844a64ac72c9823b37eb7f5e6e2c2f180c3c
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/model/AddressPayload.java
@@ -0,0 +1,17 @@
+package com.nisum.poc.Webflux.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class AddressPayload {
+ private Integer id;
+ private String address;
+ private String city;
+ private String pinCode;
+ private String addressType;
+ private Long studentId;
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/model/StudentPayload.java b/src/main/java/com/nisum/poc/Webflux/model/StudentPayload.java
new file mode 100644
index 0000000000000000000000000000000000000000..fbbb744958024b133d4180e06bfb7cbd0f199499
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/model/StudentPayload.java
@@ -0,0 +1,24 @@
+package com.nisum.poc.Webflux.model;
+
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.entity.Subject;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.mongodb.core.aggregation.ArrayOperators;
+
+import java.util.List;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class StudentPayload {
+ private Long id;
+ private String firstName;
+ private String lastName;
+ private Integer age;
+ private List<String> phoneNumbers;
+ private List<Address> addresses;
+ private List<Subject> subjects;
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/model/SubjectPayload.java b/src/main/java/com/nisum/poc/Webflux/model/SubjectPayload.java
new file mode 100644
index 0000000000000000000000000000000000000000..b30dd8a3287c8f636a21e71ed490082bde8a80d6
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/model/SubjectPayload.java
@@ -0,0 +1,16 @@
+package com.nisum.poc.Webflux.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class SubjectPayload {
+
+ private Integer id;
+ private String subjectName;
+ private Long studentId;
+
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/repository/AddressRepository.java b/src/main/java/com/nisum/poc/Webflux/repository/AddressRepository.java
new file mode 100644
index 0000000000000000000000000000000000000000..358177a9bb11a5f324a2eea1a43f4e5a4aa8b213
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/repository/AddressRepository.java
@@ -0,0 +1,12 @@
+package com.nisum.poc.Webflux.repository;
+
+import com.nisum.poc.Webflux.entity.Address;
+import org.springframework.data.mongodb.repository.ReactiveMongoRepository;
+import org.springframework.stereotype.Repository;
+import reactor.core.publisher.Flux;
+
+@Repository
+public interface AddressRepository extends ReactiveMongoRepository<Address, Long> {
+
+ Flux<Address> findByStudentId(Long studentId);
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/repository/StudentRepository.java b/src/main/java/com/nisum/poc/Webflux/repository/StudentRepository.java
new file mode 100644
index 0000000000000000000000000000000000000000..0371e1df6ef484550345f4e2648ffcaeeffbcc43
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/repository/StudentRepository.java
@@ -0,0 +1,9 @@
+package com.nisum.poc.Webflux.repository;
+
+import org.springframework.data.mongodb.repository.ReactiveMongoRepository;
+import com.nisum.poc.Webflux.entity.Student;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface StudentRepository extends ReactiveMongoRepository<Student,Long> {
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/repository/SubjectRepository.java b/src/main/java/com/nisum/poc/Webflux/repository/SubjectRepository.java
new file mode 100644
index 0000000000000000000000000000000000000000..8d9d4f86e0233e233c4e42ec2ebd05af37c30f5c
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/repository/SubjectRepository.java
@@ -0,0 +1,13 @@
+package com.nisum.poc.Webflux.repository;
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.entity.Subject;
+import org.springframework.data.mongodb.repository.ReactiveMongoRepository;
+import org.springframework.stereotype.Repository;
+import reactor.core.publisher.Flux;
+
+@Repository
+public interface SubjectRepository extends ReactiveMongoRepository<Subject,Long> {
+ Flux<Subject> findByStudentId(Long subjectId);
+
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/service/IAddressService.java b/src/main/java/com/nisum/poc/Webflux/service/IAddressService.java
new file mode 100644
index 0000000000000000000000000000000000000000..842c0da7ea90603bece17bcdd31826051ec7c06c
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/service/IAddressService.java
@@ -0,0 +1,14 @@
+package com.nisum.poc.Webflux.service;
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.model.AddressPayload;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@Service
+public interface IAddressService {
+ Mono<Address> createAddress(Address address);
+
+ Flux<Address> getAllAddress();
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/service/IStudentService.java b/src/main/java/com/nisum/poc/Webflux/service/IStudentService.java
new file mode 100644
index 0000000000000000000000000000000000000000..d45f2eddcbcd49c91376ec001b24f2b3f45ddd3d
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/service/IStudentService.java
@@ -0,0 +1,21 @@
+package com.nisum.poc.Webflux.service;
+
+import com.nisum.poc.Webflux.entity.Student;
+import com.nisum.poc.Webflux.entity.Subject;
+import com.nisum.poc.Webflux.model.StudentPayload;
+import org.springframework.stereotype.Repository;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@Service
+public interface IStudentService {
+
+ Mono<Student> createStudent(Student student);
+
+ Flux<StudentPayload> getAllStudents();
+ Flux<String> concat();
+
+ Flux<String> merge();
+ public Flux<Integer> combineWithZip();
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/service/ISubjectsService.java b/src/main/java/com/nisum/poc/Webflux/service/ISubjectsService.java
new file mode 100644
index 0000000000000000000000000000000000000000..c49db887ce9e1fee07e134ea472aa08fe4f0f43a
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/service/ISubjectsService.java
@@ -0,0 +1,14 @@
+package com.nisum.poc.Webflux.service;
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.entity.Subject;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@Service
+public interface ISubjectsService {
+ Mono<Subject> createSuject(Subject subject);
+
+ Flux<Subject> getAllSubjects();
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/service/impl/AddressServiceImpl.java b/src/main/java/com/nisum/poc/Webflux/service/impl/AddressServiceImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..71d1d78f1531fcb15531ba6bd501f19e359630db
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/service/impl/AddressServiceImpl.java
@@ -0,0 +1,28 @@
+package com.nisum.poc.Webflux.service.impl;
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.repository.AddressRepository;
+import com.nisum.poc.Webflux.service.IAddressService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@Service
+@Slf4j
+public class AddressServiceImpl implements IAddressService {
+
+ @Autowired
+ AddressRepository addressRepository;
+ @Override
+ public Mono<Address> createAddress(Address address) {
+ return addressRepository.save(address);
+
+ }
+
+ @Override
+ public Flux<Address> getAllAddress() {
+ return addressRepository.findAll();
+ }
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/service/impl/StudentServiceImpl.java b/src/main/java/com/nisum/poc/Webflux/service/impl/StudentServiceImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..8da871ef2ecc27f3ca36713f86f0bb2afaaceeff
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/service/impl/StudentServiceImpl.java
@@ -0,0 +1,121 @@
+package com.nisum.poc.Webflux.service.impl;
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.entity.Student;
+import com.nisum.poc.Webflux.entity.Subject;
+import com.nisum.poc.Webflux.model.StudentPayload;
+import com.nisum.poc.Webflux.repository.AddressRepository;
+import com.nisum.poc.Webflux.repository.StudentRepository;
+import com.nisum.poc.Webflux.repository.SubjectRepository;
+import com.nisum.poc.Webflux.service.IStudentService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+import reactor.util.function.Tuple2;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+@Service
+@Slf4j
+public class StudentServiceImpl implements IStudentService {
+
+
+ @Autowired
+ StudentRepository studentRepository;
+ @Autowired
+ AddressRepository addressRepository;
+ @Autowired
+ SubjectRepository subjectRepository;
+ @Override
+ public Mono<Student> createStudent(Student student) {
+ Student student1 = new Student();
+ student1.setId(student.getId());
+ student1.setAge(student.getAge());
+ student1.setFirstName(student.getFirstName());
+ student1.setLastName(student.getLastName());
+ student1.setPhoneNumbers(student.getPhoneNumbers());
+ Mono<Student> studentMono = studentRepository.save(student1);
+
+ List<Address> addressList = new ArrayList<>();
+ List<Subject> subjectList = new ArrayList<>();
+
+ studentMono.subscribe(studentmono -> {
+ student.getAddress().forEach(address -> {
+ Address address1 = new Address();
+ address1.setId(address.getId());
+ address1.setAddress(address.getAddress());
+ address1.setStudentId(studentmono.getId());
+ address1.setCity(address.getCity());
+ address1.setAddressType(address.getAddressType());
+ address1.setPinCode(address.getPinCode());
+ addressList.add(address1);
+ });
+ student.getSubjects().forEach(sub -> {
+ Subject subject = new Subject();
+ subject.setId(sub.getId());
+ subject.setSubjectName(sub.getSubjectName());
+ subject.setStudentId(studentmono.getId());
+ subjectList.add(subject);
+ });
+ Flux<Address> addressFlux = addressRepository.saveAll(addressList);
+ Flux<Subject> subjectFlux = subjectRepository.saveAll(subjectList);
+ });
+ return studentMono;
+ }
+ @Override
+ public Flux<StudentPayload> getAllStudents() {
+ return studentRepository.findAll().flatMap(student -> {
+ Flux<Address> addressFlux = addressRepository.findByStudentId(student.getId()).switchIfEmpty(Flux.just(new Address()));
+ Flux<Subject> subjectFlux = subjectRepository.findByStudentId(student.getId()).switchIfEmpty(Flux.just(new Subject()));
+ StudentPayload studentPayload = new StudentPayload();
+ studentPayload.setId(student.getId());
+ studentPayload.setAge(student.getAge());
+ studentPayload.setPhoneNumbers(student.getPhoneNumbers());
+ studentPayload.setFirstName(student.getFirstName());
+ studentPayload.setLastName(student.getLastName());
+ studentPayload.setAddresses(addressFlux.collectList().block());
+ studentPayload.setSubjects(subjectFlux.collectList().block());
+ Flux<StudentPayload> studentPayloadFlux = Flux.just(studentPayload);
+ return studentPayloadFlux;
+ });
+ // return studentFlux;
+ }
+
+ public Flux<String> concat() {
+ Flux<String> names1 = Flux.just("Hi ", " Hello ", "how ");
+ Flux<String> names2 = Flux.just("are ", " you ", " Doing");
+ Flux<String> names = Flux.concat(names1, names2).log();
+ return names;
+ }
+
+ public Flux<String> merge() {
+ Flux<String> names1 = Flux.just("Hi ", " Hello ", "how ");
+ Flux<String> names2 = Flux.just("are ", " you ", " Doing");
+ Flux<String> names = Flux.merge(names1, names2).log();
+ return names;
+ }
+
+ public Flux<Integer> combineWithZip(){
+
+ Flux<Integer> name1 = Flux.just(1, 2, 3);
+ Flux<Integer> name2 = Flux.just(4,5,6);
+ Flux<Integer> name3 = Flux.zip(name1,name2,(n1, n2)->{
+ return n1*n2;
+ });
+ return name3;
+ }
+ public Mono<String> combineWithZipChara(){
+
+ Mono<String> name1 = Mono.just("Hi");
+ Mono<String> name2 = Mono.just("are");
+ Flux<String> name3 = Mono.zip(name1,name2).flatMap(a ->{
+ a.getT1().toString();
+ });
+
+ }
+
+}
diff --git a/src/main/java/com/nisum/poc/Webflux/service/impl/SubjectsServiceImpl.java b/src/main/java/com/nisum/poc/Webflux/service/impl/SubjectsServiceImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..0a42c1dc21b66cc863f062fcf865ab0ae76e4a95
--- /dev/null
+++ b/src/main/java/com/nisum/poc/Webflux/service/impl/SubjectsServiceImpl.java
@@ -0,0 +1,28 @@
+package com.nisum.poc.Webflux.service.impl;
+
+import com.nisum.poc.Webflux.entity.Address;
+import com.nisum.poc.Webflux.entity.Subject;
+import com.nisum.poc.Webflux.repository.SubjectRepository;
+import com.nisum.poc.Webflux.service.ISubjectsService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@Service
+@Slf4j
+public class SubjectsServiceImpl implements ISubjectsService {
+
+ @Autowired
+ SubjectRepository subjectRepository;
+ @Override
+ public Mono<Subject> createSuject(Subject subject) {
+ return subjectRepository.save(subject);
+ }
+
+ @Override
+ public Flux<Subject> getAllSubjects() {
+ return subjectRepository.findAll();
+ }
+}
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
new file mode 100644
index 0000000000000000000000000000000000000000..f492f20183cb05f15f796c800b546760d74edac5
--- /dev/null
+++ b/src/main/resources/application.properties
@@ -0,0 +1,3 @@
+db.name=StudentDatabase
+db.host=mongodb://localhost:27017
+server.port=4042
diff --git a/src/test/java/com/nisum/poc/Webflux/WebfluxApplicationTests.java b/src/test/java/com/nisum/poc/Webflux/WebfluxApplicationTests.java
new file mode 100644
index 0000000000000000000000000000000000000000..f851bd5264c5d8c937e319b95ab634a1e66f9a42
--- /dev/null
+++ b/src/test/java/com/nisum/poc/Webflux/WebfluxApplicationTests.java
@@ -0,0 +1,13 @@
+package com.nisum.poc.Webflux;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class WebfluxApplicationTests {
+
+ @Test
+ void contextLoads() {
+ }
+
+}