Added Schema Generator Util Class (#37)

* updated models to fix the build issue

* adjusted ProjectUser

* Added generate schema util class

* Added generate schema util class

* updated comment annotation in StudioAsset class

pom.xml

@@ -143,6 +143,12 @@
 			<artifactId>spring-context</artifactId>
 			<version>6.0.9</version>
 		</dependency>
+		<dependency>
+			<groupId>org.hibernate</groupId>
+			<artifactId>hibernate-core</artifactId>
+			<version>5.6.9.Final</version>
+			<scope>compile</scope>
+		</dependency>
 
 
 	</dependencies>

src/main/java/com/gamedoora/model/GenerateSchemaApplication.java

@@ -0,0 +1,14 @@
+package com.gamedoora.model;
+
+import com.gamedoora.model.util.HibernateUtil;
+
+public class GenerateSchemaApplication {
+
+    public static void main(String[] args) throws ClassNotFoundException {
+        // Call the generateSchema() method after the application starts
+            HibernateUtil hibernateUtil = new HibernateUtil();
+            hibernateUtil.generateSchema();
+            System.out.println("Schema generation completed.");
+
+    }
+}

src/main/java/com/gamedoora/model/dao/ProjectUser.java

@@ -41,5 +41,5 @@ public class ProjectUser implements Serializable {
 //    @ManyToOne
 //    @JoinColumn(name = "project_id")
 //    Projects projects;
-
+// testing
 }

src/main/java/com/gamedoora/model/dao/StudioAsset.java

@@ -5,6 +5,7 @@
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+import org.hibernate.annotations.Comment;
 
 import javax.persistence.Column;
 import javax.persistence.Entity;
@@ -93,7 +94,8 @@ public class StudioAsset extends Audit implements Serializable {
     @Column(name = "script_locked_at")
     private Date scriptLockedAt;
 
-    @Column(name = "asset_type" , columnDefinition = "VARCHAR(255) COMMENT 'document or image or audio or video.'")
+    @Column(name = "asset_type" , columnDefinition = "VARCHAR(255)")
+    @Comment(value = "document or image or audio or video.")
     private String assetType;
 
     /* ColumnDefinition syntax has been updated, using nullable=false doesn't seem to work consistently.*/

src/main/java/com/gamedoora/model/util/HibernateUtil.java

@@ -0,0 +1,70 @@
+package com.gamedoora.model.util;
+
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistry;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.tool.hbm2ddl.SchemaExport;
+import org.hibernate.tool.schema.TargetType;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
+import org.springframework.core.type.filter.AnnotationTypeFilter;
+
+import javax.persistence.Entity;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.Map;
+
+public class HibernateUtil {
+
+    private String outputDir = "Your local gamedoora-data directory";
+
+    private int schemaVersion = 3; // remove 3 and add the next version number which you want
+
+    /**
+     * Generates database create commands for the specified entities using Hibernate native API, SchemaExport.
+     * Creation commands are exported into the create.sql file.
+     */
+    public void generateSchema() throws ClassNotFoundException {
+        Map<String, String> settings = new HashMap<>();
+        settings.put("connection.driver_class", "Driver_name");
+        settings.put("dialect", "DB_Dialect");
+        settings.put("hibernate.connection.url", "DB_URL");
+        settings.put("hibernate.connection.username", "USERNAME");
+        settings.put("hibernate.connection.password", "PASSWORD");
+        settings.put("hibernate.hbm2ddl.auto", "create");
+        settings.put("show_sql", "true");
+
+        StandardServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(settings).build();
+
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+
+        //adding all models within metadata sources manually
+        //metadataSources.addAnnotatedClass(Users.class);
+        //metadataSources.addAnnotatedClass();
+
+        // adding all models within metadata sources using ClassPath Scanner.
+        ClassPathScanningCandidateComponentProvider scanner = new ClassPathScanningCandidateComponentProvider(false);
+        scanner.addIncludeFilter(new AnnotationTypeFilter(Entity.class));
+
+        for (BeanDefinition beanDefinition : scanner.findCandidateComponents("com.gamedoora.model.dao")) {
+            Class<?> annotatedClass = Class.forName(beanDefinition.getBeanClassName());
+            metadataSources.addAnnotatedClass(annotatedClass);
+        }
+
+        Metadata metadata = metadataSources.buildMetadata();
+
+        SchemaExport schemaExport = new SchemaExport();
+        schemaExport.setHaltOnError(true);
+        schemaExport.setFormat(true);
+
+        // Specify the custom output directory and generate schema script with a new version number
+        String outputDirectory = outputDir; // Replace with the desired directory path
+        String scriptFileName = "gamedoora-beta-v" + schemaVersion + ".sql";
+
+        schemaExport.setOutputFile(outputDirectory + "/" + scriptFileName);
+        schemaExport.createOnly(EnumSet.of(TargetType.SCRIPT), metadata);
+
+        schemaVersion++; // Increment the version number
+    }
+}