add hibernate support, and example

.idea/dataSources.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
+    <data-source source="LOCAL" name="hibernate.cfg.xml/Hibernate" uuid="0be9ae1d-14ae-4499-97db-8c29829f36b6">
+      <driver-ref>postgresql</driver-ref>
+      <synchronize>true</synchronize>
+      <imported>true</imported>
+      <remarks>Hibernate
+
+C:/Users/danth/IdeaProjects/Wirestream/src/main/resources/hibernate.cfg.xml</remarks>
+      <jdbc-driver>org.postgresql.Driver</jdbc-driver>
+      <jdbc-url>jdbc:postgresql://localhost:5432/accounting</jdbc-url>
+      <jdbc-additional-properties>
+        <property name="com.intellij.clouds.kubernetes.db.host.port" />
+        <property name="com.intellij.clouds.kubernetes.db.enabled" value="false" />
+        <property name="com.intellij.clouds.kubernetes.db.container.port" />
+      </jdbc-additional-properties>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+  </component>
+</project>

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,8 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="AutoCloseableResource" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="METHOD_MATCHER_CONFIG" value="java.util.Formatter,format,java.io.Writer,append,com.google.common.base.Preconditions,checkNotNull,org.hibernate.Session,close,java.io.PrintWriter,printf,java.io.PrintStream,printf,java.lang.foreign.Arena,ofAuto,java.lang.foreign.Arena,global,org.hibernate.cfg.Configuration,buildSessionFactory" />
+    </inspection_tool>
+  </profile>
+</component>

pom.xml

@@ -47,11 +47,34 @@
             <artifactId>gson</artifactId>
             <version>2.11.0</version>
         </dependency>
+
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>42.6.2</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.hibernate.orm</groupId>
+            <artifactId>hibernate-core</artifactId>
+            <version>6.6.1.Final</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.hibernate.orm</groupId>
+            <artifactId>hibernate-c3p0</artifactId>
+            <version>6.6.1.Final</version>
+        </dependency>
+
+        <dependency>
+            <groupId>javax.persistence</groupId>
+            <artifactId>javax.persistence-api</artifactId>
+            <version>2.2</version>
+        </dependency>
     </dependencies>
 
     <build>
         <plugins>
-            <!-- Maven JAR Plugin -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
@@ -65,7 +88,6 @@
                 </executions>
             </plugin>
 
-            <!-- Maven Source Plugin -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
@@ -108,7 +130,6 @@
                 </configuration>
             </plugin>
 
-            <!-- Maven Javadoc Plugin -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>

src/main/java/io/github/lumijiez/example/Main.java

@@ -3,10 +3,14 @@ package io.github.lumijiez.example;
 import io.github.lumijiez.core.config.ServerConfig;
 import io.github.lumijiez.core.http.HttpServer;
 import io.github.lumijiez.core.http.HttpStatus;
+import io.github.lumijiez.example.daos.ProductDao;
+import io.github.lumijiez.example.models.Product;
 import io.github.lumijiez.logging.Logger;
 
 public class Main {
     public static void main(String[] args) {
+        ProductDao productDao = new ProductDao();
+
         ServerConfig config = new ServerConfig.Builder()
                 .port(8080)
                 .keepAliveTimeout(30000)
@@ -25,6 +29,11 @@ public class Main {
             res.sendResponse(HttpStatus.OK, "All good, lil bro");
         });
 
+        server.GET("/products", (req, res) -> {
+            Product product = productDao.getProductById(5);
+            res.sendResponse(HttpStatus.OK, product.toString());
+        });
+
         server.start();
     }
 }

src/main/java/io/github/lumijiez/example/daos/ProductDao.java

@@ -0,0 +1,78 @@
+package io.github.lumijiez.example.daos;
+
+import io.github.lumijiez.example.models.Product;
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+import org.hibernate.cfg.Configuration;
+
+import java.util.List;
+
+public class ProductDao {
+
+    public void saveProduct(Product product) {
+        Transaction transaction = null;
+        try (Session session = new Configuration().configure().buildSessionFactory().openSession()) {
+            transaction = session.beginTransaction();
+            session.save(product);
+            transaction.commit();
+            System.out.println("Product saved successfully!");
+        } catch (Exception e) {
+            if (transaction != null) {
+                transaction.rollback();
+            }
+            e.printStackTrace();
+        }
+    }
+
+    public Product getProductById(int id) {
+        try (Session session = new Configuration().configure().buildSessionFactory().openSession()) {
+            return session.get(Product.class, id);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    public List<Product> getAllProducts() {
+        try (Session session = new Configuration().configure().buildSessionFactory().openSession()) {
+            return session.createQuery("from Product").list();
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public void updateProduct(Product product) {
+        Transaction transaction = null;
+        try (Session session = new Configuration().configure().buildSessionFactory().openSession()) {
+            transaction = session.beginTransaction();
+            session.update(product);
+            transaction.commit();
+            System.out.println("Product updated successfully!");
+        } catch (Exception e) {
+            if (transaction != null) {
+                transaction.rollback();
+            }
+            e.printStackTrace();
+        }
+    }
+
+    public void deleteProduct(int id) {
+        Transaction transaction = null;
+        try (Session session = new Configuration().configure().buildSessionFactory().openSession()) {
+            transaction = session.beginTransaction();
+            Product product = session.get(Product.class, id);
+            if (product != null) {
+                session.delete(product);
+                System.out.println("Product deleted successfully!");
+            }
+            transaction.commit();
+        } catch (Exception e) {
+            if (transaction != null) {
+                transaction.rollback();
+            }
+            e.printStackTrace();
+        }
+    }
+}

src/main/java/io/github/lumijiez/example/models/Product.java

@@ -0,0 +1,70 @@
+package io.github.lumijiez.example.models;
+
+import jakarta.persistence.*;
+
+@Entity
+@Table(name = "products")
+public class Product {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    @Column(name = "product_code")
+    private String productCode;
+
+    @Column(name = "name")
+    private String name;
+
+    @Column(name = "category")
+    private String category;
+
+    @Column(name = "price")
+    private double price;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getProductCode() {
+        return productCode;
+    }
+
+    public void setProductCode(String productCode) {
+        this.productCode = productCode;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(double price) {
+        this.price = price;
+    }
+
+    @Override
+    public String toString() {
+        return "Product [id=" + id + ", productCode=" + productCode + ", name=" + name +
+                ", category=" + category + ", price=" + price + "]";
+    }
+}

src/main/resources/hibernate.cfg.xml

@@ -0,0 +1,24 @@
+<!DOCTYPE hibernate-configuration PUBLIC
+        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
+        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
+<hibernate-configuration>
+    <session-factory>
+        <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
+        <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/accounting</property>
+        <property name="hibernate.connection.username">postgres</property>
+        <property name="hibernate.connection.password">postgres</property>
+
+        <property name="hibernate.c3p0.min_size">5</property>
+        <property name="hibernate.c3p0.max_size">20</property>
+        <property name="hibernate.c3p0.timeout">300</property>
+        <property name="hibernate.c3p0.max_statements">50</property>
+        <property name="hibernate.c3p0.idle_test_period">3000</property>
+        <property name="hibernate.c3p0.acquire_increment">2</property>
+
+<!--        <property name="hibernate.show_sql">true</property>-->
+
+        <property name="hibernate.hbm2ddl.auto">update</property>
+
+        <mapping class="io.github.lumijiez.example.models.Product"/>
+    </session-factory>
+</hibernate-configuration>