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use flake

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target/
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result
### jetty
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### Angualr Demo ###
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out
latexout
latex.out
direnv

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$out_dir = "out";
$pdf_mode = 4; # lualatex

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\documentclass{uebung}
\author{Linus Nagel}
\chapter{1}
\usepackage{listings}
\usepackage{xcolor}
\lstset{
language=Java,
basicstyle=\ttfamily\small,
keywordstyle=\color{blue},
commentstyle=\color{green!60!black},
stringstyle=\color{red},
numbers=left,
numberstyle=\tiny,
frame=single,
breaklines=true,
showspaces=false,
showtabs=false,
tabsize=2
}
\begin{document}
\maketitle
\begin{exercises}
\item \textbf{Welche Nachteile ergeben sich durch bisherige Schichtentrennung bei der Client-Server-Programmierung mit Stand-Alone Clients?}
Bei Stand-Alone Clients ergeben sich folgende Nachteile:
\begin{itemize}
\item Jeder Client öffnet eigene Datenbankverbindungen, was bei vielen Clients zu einer hohen Belastung des Datenbankservers führt.
\item Die Datenbankverbindungsdaten liegen als \texttt{.class}-Dateien auf dem Client und können per Decompiler ausgelesen werden ein erhebliches Sicherheitsrisiko.
\item Es fehlt eine zentrale Kontrolle über Transaktionen, Caching und Ressourcenpooling.
\end{itemize}
\item \textbf{Welche Nachteile ergeben sich durch bisherige Schichtentrennung bei der Client-Server-Programmierung mit Web Clients?}
Bei Web Clients treten folgende Nachteile auf:
\begin{itemize}
\item Kein einfaches Clustering (Lastverteilung und Ausfallsicherheit).
\item Kein zentraler Cache häufig angefragte Daten müssen immer wieder neu aus der Datenbank geladen werden.
\item Threadinterferenzen müssen manuell durch den Programmierer verhindert werden.
\end{itemize}
\item \textbf{Was ist ein Application Server?}
Ein Application Server ist eine Laufzeitumgebung für Jakarta EE-Komponenten. Er stellt Container (z.B. EJB-Container, Web-Container) bereit und bietet standardisierte Dienste wie Transaktionssteuerung (JTA), Sicherheit (JAAS), Namensdienst (JNDI), Messaging (JMS) und Persistenz (JPA). Bekannte Beispiele sind WildFly, WebSphere und WebLogic.
\item \textbf{Worum handelt es sich bei einer Session Bean?}
Eine Session Bean ist eine Komponente der Jakarta Enterprise Beans (EJB), die die Geschäftslogik einer verteilten Anwendung kapselt. Sie wird im EJB-Container des Application Servers ausgeführt und kann von Clients (lokal, remote oder als Webservice) aufgerufen werden. Es gibt drei Typen: Stateless, Stateful und Singleton Session Beans.
\item \textbf{Worin liegt der Unterschied zwischen Stateless und Stateful Session Beans?}
\begin{itemize}
\item \textbf{Stateless Session Bean:} Sie speichert keinen client-spezifischen Zustand. Der Container verwaltet einen Pool von Instanzen. Bei jedem Aufruf kann eine beliebige Instanz verwendet werden. Nach der Methode werden die Daten nicht aufbewahrt.
\item \textbf{Stateful Session Bean:} Sie behält über mehrere Aufrufe hinweg einen client-spezifischen Zustand. Für jeden Client wird eine eigene Instanz erzeugt und bei späteren Aufrufen dieselbe Instanz wiederverwendet.
\end{itemize}
\item \textbf{Welche Möglichkeiten gibt es für einen Aufruf einer Session Bean?}
\begin{itemize}
\item \textbf{Lokaler Aufruf:} Innerhalb derselben Java Virtual Machine (z.B. von einer anderen Bean).
\item \textbf{Remoter Aufruf:} Von einer anderen JVM (z.B. Standalone-Client).
\item \textbf{Webservice-Aufruf:} Nur für Stateless Session Beans möglich, über SOAP oder REST.
\end{itemize}
\item \textbf{Wie wird eine Stateless Session Bean erstellt?}
\begin{enumerate}
\item Erstellen eines Business-Interfaces (mit \texttt{@Remote} oder \texttt{@Local}), das die öffentlichen Methoden deklariert.
\item Erstellen einer Klasse, die das Interface implementiert und mit \texttt{@Stateless} annotiert wird.
\end{enumerate}
\item \textbf{Welche Schritte sind für einen Client notwendig, um eine Methode einer Stateless Session Bean aufzurufen?}
\begin{enumerate}
\item Erstellen eines \texttt{InitialContext} mit den nötigen Properties (z.B. Provider-URL, Context Factory).
\item Aufruf von \texttt{lookup()} mit dem JNDI-Namen der Bean.
\item Cast des zurückgegebenen Proxy-Objekts auf das Remote-Interface.
\item Aufruf der gewünschten Methode auf dem Proxy.
\end{enumerate}
\item \textbf{Wie muss eine Stateful Session Bean annotiert werden?}
Die Bean-Klasse wird mit \texttt{@Stateful} annotiert.
\item \textbf{Wie kann bei einer Stateful Session Bean angegeben werden, dass eine Bean-Instanz nicht mehr benötigt wird und vom Server zerstört werden kann?}
Eine Methode (z.B. \texttt{beenden()}) wird mit der Annotation \texttt{@Remove} versehen. Nach dem Aufruf dieser Methode zerstört der Container die Instanz.
\item \textbf{Welchen Unterschied gibt es bei Stateful Session Beans bezüglich des JNDI-Namens?}
Beim Lookup muss an den JNDI-Namen \texttt{?stateful} angehängt werden. Beispiel: \texttt{ejb:/meineBean?stateful}
\item \textbf{Worum handelt es sich bei Singleton Session Beans?}
Eine Singleton Session Bean wird nur einmal pro Application Server instanziiert. Diese eine Instanz wird von allen Clients gemeinsam genutzt. Sie eignet sich für globale Ressourcen oder zentrale Dienste.
\item \textbf{Wie werden Singleton Session Beans erstellt?}
Die Klasse wird mit \texttt{@Singleton} annotiert. Optional kann \texttt{@Startup} hinzugefügt werden, damit die Instanz bereits beim Serverstart erzeugt wird (sonst beim ersten Lookup).
\item \textbf{Welche Probleme können durch einen gemeinsamen Zugriff von mehreren Clients auf eine Singleton Session Bean theoretisch entstehen?}
Da mehrere Threads gleichzeitig auf dieselbe Instanz zugreifen können, kommt es zu Threadinterferenzen, wenn sie lesend und schreibend auf gemeinsame Daten zugreifen. Dies kann zu Dateninkonsistenz und unerwartetem Verhalten führen.
\item \textbf{Wie kann diesen Problemen programmatisch entgegnet werden?}
Es gibt zwei Ansätze:
\begin{itemize}
\item \textbf{Container Managed Concurrency (Standard):} Mit \texttt{@Lock(LockType.READ)} für lesende und \texttt{@Lock(LockType.WRITE)} für schreibende Methoden. Der Container sorgt dann für die nötige Synchronisation.
\item \textbf{Bean Managed Concurrency:} Die Bean wird mit \texttt{@ConcurrencyManagement(ConcurrencyManagementType.BEAN)} annotiert und der Programmierer verwendet eigene Synchronisationsmechanismen (z.B. \texttt{synchronized}).
\end{itemize}
\item \textbf{Erstellen Sie eine Stateless Session Bean, die eine Methode zur Verschlüsselung eines Strings bereitstellt.}
\textbf{Remote-Interface:} \lstinputlisting{code/aufgabe16/EncryptorRemote.java}
\textbf{Bean-Klasse:} \lstinputlisting{code/aufgabe16/Encryptor.java}
\textbf{Standalone-Client:} \lstinputlisting{code/aufgabe16/Client.java}
\item \textbf{Erstellen Sie eine Stateful Session Bean, die einen Zähler zur Verfügung stellt.}
\textbf{Remote-Interface:} \lstinputlisting{code/aufgabe17/CounterRemote.java}
\textbf{Bean-Klasse:} \lstinputlisting{code/aufgabe17/Counter.java}
\textbf{Client (mehrfache Aufrufe auf derselben Instanz):} \lstinputlisting{code/aufgabe17/CounterClient.java}
\item \textbf{Warum liefert die get-Methode aus Aufgabe 17 bei einem erneuten Aufruf der Testklasse immer wieder den Startwert des Zählers?}
Bei jedem Aufruf der \texttt{main}-Methode wird eine neue Instanz der Stateful Session Bean erzeugt, da der \texttt{lookup} jedes Mal eine frische Bean-Instanz zurückgibt. Der alte Zustand (Zählerstand) ist nur innerhalb derselben Client-Sitzung gültig. Wird das Client-Programm neu gestartet, gibt es eine neue Instanz mit dem Anfangswert 0. Möchte man den Zähler über mehrere Programmstarts hinweg speichern, müsste man ihn in einer Datenbank oder Datei persistieren.
\end{exercises}
\end{document}

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\ProvidesClass{uebung}[Sem3 Web Engineering Exercise Sheet Class]
% Base class with options
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linkcolor=blue,
filecolor=magenta,
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pdftitle={Web Engineering Übungen},
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"locked": {
"lastModified": 1762844143,
"narHash": "sha256-SlybxLZ1/e4T2lb1czEtWVzDCVSTvk9WLwGhmxFmBxI=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "9da7f1cf7f8a6e2a7cb3001b048546c92a8258b4",
"type": "github"
},
"original": {
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "9da7f1cf7f8a6e2a7cb3001b048546c92a8258b4",
"type": "github"
}
},
"nixpkgs-angular-cli": {
"locked": {
"lastModified": 1764947035,
"narHash": "sha256-EYHSjVM4Ox4lvCXUMiKKs2vETUSL5mx+J2FfutM7T9w=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "a672be65651c80d3f592a89b3945466584a22069",
"type": "github"
},
"original": {
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "a672be65651c80d3f592a89b3945466584a22069",
"type": "github"
}
},
"nixpkgs-lib": {
"locked": {
"lastModified": 1761765539,
"narHash": "sha256-b0yj6kfvO8ApcSE+QmA6mUfu8IYG6/uU28OFn4PaC8M=",
"owner": "nix-community",
"repo": "nixpkgs.lib",
"rev": "719359f4562934ae99f5443f20aa06c2ffff91fc",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "nixpkgs.lib",
"type": "github"
}
},
"root": {
"inputs": {
"flake-parts": "flake-parts",
"nixpkgs": "nixpkgs",
"nixpkgs-angular-cli": "nixpkgs-angular-cli"
}
}
},
"root": "root",
"version": 7
}

172
flake.nix Normal file
View File

@@ -0,0 +1,172 @@
{
description = "Web Engineering";
inputs = {
flake-parts.url = "github:hercules-ci/flake-parts";
nixpkgs.url = "github:NixOS/nixpkgs/9da7f1cf7f8a6e2a7cb3001b048546c92a8258b4";
nixpkgs-angular-cli.url = "github:NixOS/nixpkgs/a672be65651c80d3f592a89b3945466584a22069";
};
outputs = inputs @ {
flake-parts,
self,
...
}:
flake-parts.lib.mkFlake {inherit inputs;} {
imports = [];
systems = ["x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin"];
perSystem = {
config,
self',
inputs',
pkgs,
system,
...
}:
with pkgs.lib; let
latexPackages = with pkgs; [
latexrun
(texlive.withPackages
(ps:
with ps; [
amsmath
biber
biblatex
changepage
csquotes
enumitem
fontaxes
latexmk
listings
minted
newtx
newtxsf
newtxtt
scheme-medium
textpos
times
titlesec
transparent
upquote
]))
];
wildfly = pkgs.stdenvNoCC.mkDerivation {
name = "wildfly-39.0.0.Final";
src = pkgs.fetchzip {
url = "https://github.com/wildfly/wildfly/releases/download/39.0.0.Final/wildfly-39.0.0.Final.zip";
hash = "sha256-nfdb4doRRn4AwMQZkNYwIDBKIq4iY6diFX/WlPFQqZI=";
};
installPhase = ''
mkdir -p $out
cp -r $src/* $out/
'';
};
wildfly-fhs = pkgs.buildFHSEnv {
name = "wildfly-fhs";
targetPkgs = pkgs:
with pkgs; [
openjdk21
bash
coreutils
];
runScript = "${wildfly}/bin/standalone.sh";
profile =
# bash
''
export WILDFLY_BASE_DIR="$HOME/.wildfly-fhs-base"
mkdir -p "$WILDFLY_BASE_DIR"/{log,data,deployments,tmp,configuration}
if [ ! -f "$WILDFLY_BASE_DIR/configuration/standalone.xml" ]; then
cp -r ${wildfly}/standalone/configuration/* "$WILDFLY_BASE_DIR/configuration/"
chmod -R u+w "$WILDFLY_BASE_DIR/configuration/"
fi
export JBOSS_HOME=${wildfly}
export JBOSS_BASE_DIR="$WILDFLY_BASE_DIR"
'';
};
in {
# Per-system attributes can be defined here. The self' and inputs'
# module parameters provide easy access to attributes of the same
# system.
packages = with pkgs; let
fmtNum = strings.fixedWidthNumber 2;
fmtReleaseName = sem: author: chap: "${fmtNum sem} - ${fmtNum chap} - ${author.lastName}, ${author.firstName}.pdf";
fmtRelease = fmtReleaseName 3 {
firstName = "Linus";
lastName = "Nagel";
};
mkUebungPdf = n: args:
stdenvNoCC.mkDerivation rec {
name = fmtRelease n;
version = "1.0.0";
src = ./.;
buildInputs = latexPackages;
buildPhase =
# sh
''
cd docs/uebungen
latexmk \
-pdf \
-l -dir-report -file-line-error -verbose \
-interaction=nonstopmode \
"uebung-${toString n}.tex"
'';
installPhase =
# sh
''
mkdir -p $out/share $out/log $out/artifacts
cp out/uebung-${toString n}.pdf "$out/share/${name}"
cp out/*.log $out/log/
cp -r out/* $out/artifacts
'';
}
// args;
in {
"uebung-5" = mkUebungPdf 5 {};
"uebung-6" = mkUebungPdf 6 {};
"uebung-7" = mkUebungPdf 7 {};
};
devShells.default = with pkgs;
mkShell {
buildInputs = [wildfly-fhs pkgs.openjdk21];
nativeBuildInputs = [];
packages =
[
mermaid-cli
openjdk
jetty
maven
]
++ latexPackages;
shellHook =
# bash
''
export WILDFLY_BASE_DIR="$HOME/.wildfly-fhs-base"
build() {
# builds target/demo.war
mvn clean package
}
# e.g. 'deploy target/demo.war'
deploy() {
cp -v "$1" "$WILDFLY_BASE_DIR/deployments/"
}
start() {
wildfly-fhs
}
'';
};
};
flake = {
# The usual flake attributes can be defined here, including system-
# agnostic ones like nixosModule and system-enumerating ones, although
# those are more easily expressed in perSystem.
};
};
}

316
mvnw vendored Executable file
View File

@@ -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} $MAVEN_CONFIG "$@"

188
mvnw.cmd vendored Executable file
View File

@@ -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%

4037
package-lock.json generated Normal file

File diff suppressed because it is too large Load Diff

6
package.json Normal file
View File

@@ -0,0 +1,6 @@
{
"dependencies": {
"@angular/cli": "^21.0.2",
"@angular/core": "^21.0.3"
}
}

76
pom.xml Executable file
View File

@@ -0,0 +1,76 @@
<?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>
<groupId>org.example</groupId>
<artifactId>demo</artifactId>
<version>1.0-SNAPSHOT</version>
<name>demo</name>
<packaging>war</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.report.sourceEncoding>UTF-8</project.report.sourceEncoding>
<maven.compiler.release>21</maven.compiler.release>
<junit.version>5.11.0-M2</junit.version>
<compiler-plugin.version>3.13.0</compiler-plugin.version>
<war-plugin.version>3.4.0</war-plugin.version>
</properties>
<dependencies>
<dependency>
<groupId>jakarta.platform</groupId>
<artifactId>jakarta.jakartaee-web-api</artifactId>
<version>11.0.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>jakarta.faces</artifactId>
<version>4.1.3</version>
</dependency>
<dependency>
<groupId>jakarta.enterprise</groupId>
<artifactId>jakarta.enterprise.cdi-api</artifactId>
<version>4.1.0</version>
</dependency>
<dependency>
<groupId>jakarta.enterprise</groupId>
<artifactId>jakarta.enterprise.cdi-el-api</artifactId>
<version>4.1.0</version>
</dependency>
<dependency>
<groupId>org.jboss.weld.servlet</groupId>
<artifactId>weld-servlet-core</artifactId>
<version>5.1.2.Final</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.30</version>
</dependency>
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>15.0.3</version>
<classifier>jakarta</classifier>
</dependency>
</dependencies>
<build>
<finalName>demo</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>${war-plugin.version}</version>
</plugin>
</plugins>
</build>
</project>

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package org.example.demo.uebung1.aufgabe16;
import javax.naming.InitialContext;
import javax.naming.Context;
import java.util.Properties;
public class Client {
public static void main(String[] args) throws Exception {
Properties props = new Properties();
props.setProperty(Context.INITIAL_CONTEXT_FACTORY,
"org.wildfly.naming.client.WildFlyInitialContextFactory");
props.setProperty(Context.PROVIDER_URL, "http-remoting://localhost:8080");
InitialContext ctx = new InitialContext(props);
EncryptorRemote encryptor = (EncryptorRemote) ctx.lookup(
"ejb:/IhrProjektname/Encryptor!encryption.EncryptorRemote");
String original = "Hallo Welt";
String encrypted = encryptor.encrypt(original);
System.out.println("Original: " + original);
System.out.println("Verschlüsselt: " + encrypted);
}
}

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package org.example.demo.uebung1.aufgabe16;
import jakarta.ejb.Stateless;
@Stateless
public class Encryptor implements EncryptorRemote {
@Override
public String encrypt(String input) {
StringBuilder result = new StringBuilder();
for (char c : input.toCharArray()) {
result.append((char)(c + 5));
}
return result.toString();
}
}

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package org.example.demo.uebung1.aufgabe16;
import jakarta.ejb.Remote;
@Remote
public interface EncryptorRemote {
String encrypt(String input);
}

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package org.example.demo.uebung1.aufgabe17;
import jakarta.ejb.Stateful;
@Stateful
public class Counter implements CounterRemote {
private int value = 0;
@Override
public int getAndIncrement() {
return value++;
}
}

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package org.example.demo.uebung1.aufgabe17;
import javax.naming.InitialContext;
import javax.naming.Context;
import java.util.Properties;
public class CounterClient {
public static void main(String[] args) throws Exception {
Properties props = new Properties();
props.setProperty(Context.INITIAL_CONTEXT_FACTORY,
"org.wildfly.naming.client.WildFlyInitialContextFactory");
props.setProperty(Context.PROVIDER_URL, "http-remoting://localhost:8080");
InitialContext ctx = new InitialContext(props);
CounterRemote counter = (CounterRemote) ctx.lookup(
"ejb:/IhrProjektname/Counter!counter.CounterRemote?stateful");
System.out.println(counter.getAndIncrement());
System.out.println(counter.getAndIncrement());
System.out.println(counter.getAndIncrement());
}
}

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package org.example.demo.uebung1.aufgabe17;
import jakarta.ejb.Remote;
@Remote
public interface CounterRemote {
int getAndIncrement();
}

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="https://jakarta.ee/xml/ns/jakartaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/beans_4_1.xsd">
</beans>

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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence xmlns="https://jakarta.ee/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://jakarta.ee/xml/ns/persistence https://jakarta.ee/xml/ns/persistence/persistence_3_2.xsd"
version="3.2">
<persistence-unit name="default">
</persistence-unit>
</persistence>

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="https://jakarta.ee/xml/ns/jakartaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/beans_4_0.xsd"
version="4.0" bean-discovery-mode="annotated">
</beans>

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<?xml version="1.0" encoding="UTF-8"?>
<faces-config xmlns="https://jakarta.ee/xml/ns/jakartaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="4.0" xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-facesconfig_4_0.xsd">
</faces-config>

22
src/main/webapp/WEB-INF/web.xml Executable file
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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
version="6.0">
<context-param>
<param-name>jakarta.faces.CONFIG_FILES</param-name>
<param-value>/WEB-INF/faces-config.xml</param-value>
</context-param>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>jakarta.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
</web-app>