niklas.ortmann/webprogrammierung
0
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

DataBaseArticleManager + Methoden

Browse Source 
search-Methode muss noch implementiert werden...
This commit is contained in:
NOrtmann1
2026-06-05 09:57:34 +02:00
parent 793d9632b2
commit 524dc2a399
9 changed files with 4028 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
.idea/dataSources/315cb5c9-2b0f-435b-b602-59823b160908.xml
Generated
+1833
View File
File diff suppressed because it is too large Load Diff
.idea/dataSources/315cb5c9-2b0f-435b-b602-59823b160908/storage_v2/_src_/schema/main.uQUzAA.meta
Generated
+2
View File
@@ -0,0 +1,2 @@
#n:main
!<md> [0, 0, null, null, -2147483648, -2147483648]
.idea/dataSources/a0abcd0a-1d6f-40e4-88be-f442bcb431ba.xml
Generated
+1833
View File
File diff suppressed because it is too large Load Diff
.idea/dataSources/a0abcd0a-1d6f-40e4-88be-f442bcb431ba/storage_v2/_src_/schema/main.uQUzAA.meta
Generated
+2
View File
@@ -0,0 +1,2 @@
#n:main
!<md> [0, 0, null, null, -2147483648, -2147483648]
.idea/dataSources/data_sources_history.xml
Generated
+42
View File
@@ -0,0 +1,42 @@
<DataSourcesHistory>
<DataSourceFromHistory isRemovedFromProject="true">
<data-source source="LOCAL" name="articles" uuid="a0abcd0a-1d6f-40e4-88be-f442bcb431ba">
<database-info product="SQLite" version="3.51.1" jdbc-version="4.2" driver-name="SQLite JDBC" driver-version="3.51.1.0" dbms="SQLITE" exact-version="3.51.1" exact-driver-version="3.51">
<identifier-quote-string>&quot;</identifier-quote-string>
</database-info>
<case-sensitivity plain-identifiers="mixed" quoted-identifiers="mixed" />
<driver-ref>sqlite.xerial</driver-ref>
<synchronize>true</synchronize>
<jdbc-driver>org.sqlite.JDBC</jdbc-driver>
<jdbc-url>jdbc:sqlite:$PROJECT_DIR$/db/articles</jdbc-url>
<secret-storage>master_key</secret-storage>
<auth-provider>no-auth</auth-provider>
<schema-mapping>
<introspection-scope>
<node kind="schema" qname="@" />
</introspection-scope>
</schema-mapping>
<working-dir>$ProjectFileDir$</working-dir>
</data-source>
</DataSourceFromHistory>
<DataSourceFromHistory isRemovedFromProject="false">
<data-source source="LOCAL" name="articles" uuid="315cb5c9-2b0f-435b-b602-59823b160908">
<database-info product="SQLite" version="3.51.1" jdbc-version="4.2" driver-name="SQLite JDBC" driver-version="3.51.1.0" dbms="SQLITE" exact-version="3.51.1" exact-driver-version="3.51">
<identifier-quote-string>&quot;</identifier-quote-string>
</database-info>
<case-sensitivity plain-identifiers="mixed" quoted-identifiers="mixed" />
<driver-ref>sqlite.xerial</driver-ref>
<synchronize>true</synchronize>
<jdbc-driver>org.sqlite.JDBC</jdbc-driver>
<jdbc-url>jdbc:sqlite:$PROJECT_DIR$/db/articles</jdbc-url>
<secret-storage>master_key</secret-storage>
<auth-provider>no-auth</auth-provider>
<schema-mapping>
<introspection-scope>
<node kind="schema" qname="@" />
</introspection-scope>
</schema-mapping>
<working-dir>$ProjectFileDir$</working-dir>
</data-source>
</DataSourceFromHistory>
</DataSourcesHistory>
db/articles
View File
php/model/ArticleManagerDAO.php
+9 -10
View File
@@ -20,8 +20,7 @@ interface ArticleManagerDAO
* @param $category string Kategorie des Beitrages
* @param $tags string optionale Schlagworte für eine bessere Suche
*
* Mögliche Exceptions:
* TODO: Exceptions implementieren.
* @throws InternalServerErrorException
*/
public function addArticle($title, $content, $author, $category, $tags);
@@ -37,16 +36,17 @@ interface ArticleManagerDAO
* @throws InternalServerErrorException
* @throws NotFoundException
* @throws UnauthorizedAccessException
* /
*/
public function updateArticle($id, $article, $author);
/**
* Löscht einen Beitrag aus übergebener ID.
* TODO: sollte auch die Autorisierung prüfen...
* @param $id
* @return void
*
* TODO: Exceptions implementieren.
* @throws InternalServerErrorException
* @throws NotFoundException
* @throws UnauthorizedAccessException
*/
public function deleteArticle($id);
@@ -55,16 +55,14 @@ interface ArticleManagerDAO
* $id ID des Beitrags
*
* @return Article
* Mögliche Exceptions:
* TODO: Exceptions implementieren.
* @throws InternalServerErrorException
*/
public function getArticle($id);
/**
* Alle Beiträge aufrufen.
*
* Mögliche Exceptions:
* TODO: Exceptions implementieren.
* @throws InternalServerErrorException
*/
public function getAllArticles();
@@ -72,7 +70,7 @@ interface ArticleManagerDAO
* Gibt alle Beiträge eines Nutzer mit einer gegebenen ID aus.
* @param $author
* @return Article[]
* TODO: Exceptions implementieren.
* @throws InternalServerErrorException
*/
public function getArticlesByAuthor($author);
@@ -89,6 +87,7 @@ interface ArticleManagerDAO
* Gibt alle Beiträge einer gegebenen Kategorie aus.
* @param $category
* @return mixed
* @throws InternalServerErrorException
*/
public function getArticlesByCategory($category);
php/model/DatabaseArticleManager.php
+306
View File
@@ -0,0 +1,306 @@
<?php
require_once 'ArticleManagerDAO.php';
require_once 'Article.php';
/**
* Klasse: Eine SQLLite3 Lösung des ArticleManagerDAO.
*
* @author Niklas Ortmann
*/
class DatabaseArticleManager implements ArticleManagerDAO {
private static $instance = null;
/**
* Konstruktor
*
* Erstellt die Datenbankverbindung und die Tabelle articles.
* @throws InternalServerErrorException
*/
public function __construct()
{
if (!file_exists("../../db/articles.db")) {
try {
$user = 'root';
$pw = null;
$dsn = 'sqlite: ../../db/articles.db';
$db = new PDO($dsn, $user, $pw);
$db->exec("
CREATE TABLE articles (
id INTEGER PRIMARY KEY AUTOINCREMENT,
title TEXT,
content TEXT,
author TEXT,
category TEXT,
tags TEXT,
created TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);");
unset($db);
} catch (PDOException $e) {
throw new InternalServerErrorException($e->getMessage());
}
}
}
/**
* Baut die Verbindung zur Datenbank auf.
* @throws InternalServerErrorException
*/
private function getConnection()
{
try {
$user = 'root';
$pw = null;
$dsn = 'sqlite: ../../db/gaestebuch.db';
return new PDO($dsn, $user, $pw);
} catch (PDOException $e) {
throw new InternalServerErrorException($e->getMessage());
}
}
/**
* Gibt die DatabaseArticleManager-Instanz zurück.
* @return DatabaseArticleManager
*/
public static function getInstance()
{
if (self::$instance == null) {
self::$instance = new DatabaseArticleManager();
}
return self::$instance;
}
public function addArticle($title, $content, $author, $category, $tags)
{
try {
$db = $this->getConnection();
$sql = "INSERT INTO articles (title, content, author, category, tags)
VALUES (:title, :content, :author, :category, :tags);";
$command = $db->prepare($sql);
if (!$command) {
throw new InternalServerErrorException("internal_error");
}
// Verknüpft die übergebenen Parameter exakt mit den SQL-Platzhaltern
$success = $command->execute([
":title" => $title,
":content" => $content,
":author" => $author,
":category" => $category,
":tags" => $tags
]);
if (!$success) {
throw new InternalServerErrorException("internal_error");
}
return intval($db->lastInsertId());
} catch (PDOException $e) {
throw new InternalServerErrorException($e->getMessage());
}
}
public function updateArticle($id, $article, $author)
{
if (empty($article)) {
throw new InternalServerErrorException("internal_error");
}
// Berechtigungsprüfung analog zur lokalen Implementierung:
if ($article->getAuthor() !== $author) {
throw new UnauthorizedAccessException("unauthorized_access");
}
try {
$db = $this->getConnection();
$sql = "UPDATE articles
SET title = :title, content = :content, author = :author, category = :category, tags = :tags
WHERE id = :id;";
$command = $db->prepare($sql);
if (!$command) {
throw new InternalServerErrorException("internal_error");
}
$success = $command->execute([
":id" => $id,
":title" => $article->getTitle(),
":content" => $article->getContent(),
":author" => $author,
":category" => $article->getCategory(),
":tags" => $article->getTags()
]);
// rowCount() prüft, ob eine Zeile mit dieser ID existierte und geändert werden konnte
if (!$success || $command->rowCount() === 0) {
// Falls die ID nicht existiert, prüfen wir, ob sie überhaupt da ist
if (!$this->getArticle($id)) {
throw new NotFoundException("missing_id");
}
}
} catch (PDOException $e) {
throw new InternalServerErrorException("internal_error");
}
}
public function deleteArticle($id)
{
// TODO: Sollte auch die Autorisierung prüfen...
try {
$db = $this->getConnection();
$sql = "DELETE FROM articles WHERE id = :id;";
$command = $db->prepare($sql);
if (!$command) {
throw new InternalServerErrorException("internal_error");
}
if (!$command->execute([":id" => $id])) {
throw new InternalServerErrorException("internal_error");
}
} catch (PDOException $exc) {
throw new InternalServerErrorException("internal_error");
}
}
public function getArticle($id)
{
try {
$db = $this->getConnection();
$sql = "SELECT * FROM articles WHERE id = :id;";
$command = $db->prepare($sql);
if (!$command) {
throw new InternalServerErrorException("internal_error");
}
$command->execute([":id" => $id]);
$row = $command->fetch(PDO::FETCH_ASSOC);
if ($row) {
return new Article(
intval($row['id']),
$row['title'],
$row['content'],
$row['author'],
$row['category'],
$row['tags'],
$row['created']
);
}
return null;
} catch (PDOException $e) {
throw new InternalServerErrorException("internal_error");
}
}
public function getAllArticles()
{
try {
$db = $this->getConnection();
$sql = "SELECT * FROM articles;";
$command = $db->query($sql);
if (!$command) {
throw new InternalServerErrorException("internal_error");
}
$rows = $command->fetchAll(PDO::FETCH_ASSOC);
$articles = [];
foreach ($rows as $row) {
$articles[] = new Article(
intval($row['id']),
$row['title'],
$row['content'],
$row['author'],
$row['category'],
$row['tags'],
$row['created']
);
}
return $articles;
} catch (PDOException $e) {
throw new InternalServerErrorException("internal_error");
}
}
public function getArticlesByAuthor($author)
{
try {
$db = $this->getConnection();
$sql = "SELECT * FROM articles WHERE author = :author;";
$command = $db->prepare($sql);
if (!$command) {
throw new InternalServerErrorException("internal_error");
}
$command->execute([":author" => $author]);
$rows = $command->fetchAll(PDO::FETCH_ASSOC);
$filteredArticles = [];
foreach ($rows as $row) {
$filteredArticles[] = new Article(
intval($row['id']),
$row['title'],
$row['content'],
$row['author'],
$row['category'],
$row['tags'],
$row['created']
);
}
return $filteredArticles;
} catch (PDOException $e) {
throw new InternalServerErrorException("internal_error");
}
}
public function getArticlesByCategory($category)
{
try {
$db = $this->getConnection();
$sql = "SELECT * FROM articles WHERE category = :category;";
$command = $db->prepare($sql);
if (!$command) {
throw new InternalServerErrorException("internal_error");
}
$command->execute([":category" => $category]);
$rows = $command->fetchAll(PDO::FETCH_ASSOC);
$filteredArticles = [];
foreach ($rows as $row) {
$filteredArticles[] = new Article(
intval($row['id']),
$row['title'],
$row['content'],
$row['author'],
$row['category'],
$row['tags'],
$row['created']
);
}
return $filteredArticles;
} catch (PDOException $exc) {
throw new InternalServerErrorException("internal_error");
}
}
public function search(string $keyword): array
{
// TODO: implement search()
return [];
}
}
php/model/LocalArticleManager.php
+1
View File
@@ -104,6 +104,7 @@ class LocalArticleManager implements ArticleManagerDAO {
public function deleteArticle($id)
{
// TODO: Sollte auch die Autorisierung prüfen...
$articles = $this->getAllArticles();
$articleFound = false;