Implemented ebeans

By: Dinnerbone <dinnerbone@dinnerbone.com>

paper-api/pom.xml

@@ -34,5 +34,10 @@
             <artifactId>json-simple</artifactId>
             <version>1.1</version>
         </dependency>
+        <dependency>
+            <groupId>org.avaje</groupId>
+            <artifactId>ebean</artifactId>
+            <version>2.7.3</version>
+        </dependency>
     </dependencies>
 </project>

paper-api/src/main/java/org/bukkit/Bukkit.java

@@ -31,7 +31,7 @@ public final class Bukkit {
      */
     public static void setServer(Server server) {
         if (Bukkit.server != null) {
-            throw new UnsupportedOperationException("Cannot redelcare singleton Server");
+            throw new UnsupportedOperationException("Cannot redefine singleton Server");
         }
 
         Bukkit.server = server;

paper-api/src/main/java/org/bukkit/Server.java

@@ -1,6 +1,7 @@
 
 package org.bukkit;
 
+import com.avaje.ebean.config.ServerConfig;
 import org.bukkit.entity.Player;
 import java.util.List;
 import java.util.logging.Logger;
@@ -186,4 +187,11 @@ public interface Server {
      * @throws CommandException Thrown when the executor for the given command fails with an unhandled exception
      */
     public boolean dispatchCommand(CommandSender sender, String commandLine);
+
+    /**
+     * Populates a given {@link ServerConfig} with values attributes to this server
+     *
+     * @param config ServerConfig to populate
+     */
+    public void configureDbConfig(ServerConfig config);
 }

paper-api/src/main/java/org/bukkit/plugin/Plugin.java

@@ -1,6 +1,7 @@
 
 package org.bukkit.plugin;
 
+import com.avaje.ebean.EbeanServer;
 import java.io.File;
 import org.bukkit.Server;
 import org.bukkit.command.CommandExecutor;
@@ -80,4 +81,11 @@ public interface Plugin extends CommandExecutor {
      * @param canNag is this plugin still naggable?
      */
     public void setNaggable(boolean canNag);
+
+    /**
+     * Gets the {@link EbeanServer} tied to this plugin
+     *
+     * @return Ebean server instance
+     */
+    public EbeanServer getDatabase();
 }

paper-api/src/main/java/org/bukkit/plugin/PluginDescriptionFile.java

@@ -23,6 +23,7 @@ public final class PluginDescriptionFile {
     private String description = null;
     private ArrayList<String> authors = new ArrayList<String>();
     private String website = null;
+    private boolean database = false;
 
     @SuppressWarnings("unchecked")
     public PluginDescriptionFile(final InputStream stream) throws InvalidDescriptionException {
@@ -120,6 +121,14 @@ public final class PluginDescriptionFile {
         return website;
     }
 
+    public boolean isDatabaseEnabled() {
+        return database;
+    }
+
+    public void setDatabaseEnabled(boolean database) {
+        this.database = database;
+    }
+
     private void loadMap(Map<String, Object> map) throws InvalidDescriptionException {
         try {
             name = map.get("name").toString();
@@ -164,6 +173,14 @@ public final class PluginDescriptionFile {
             }
         }
 
+        if (map.containsKey("database")) {
+            try {
+                database = (Boolean)map.get("database");
+            } catch (ClassCastException ex) {
+                throw new InvalidDescriptionException(ex, "database is of wrong type");
+            }
+        }
+
         if (map.containsKey("website")) {
             try {
                 website = (String)map.get("website");
@@ -204,6 +221,7 @@ public final class PluginDescriptionFile {
         map.put("name", name);
         map.put("main", main);
         map.put("version", version);
+        map.put("database", database);
 
         if (commands != null) map.put("command", commands);
         if (depend != null) map.put("depend", depend);

paper-api/src/main/java/org/bukkit/plugin/java/JavaPlugin.java

@@ -1,7 +1,13 @@
 
 package org.bukkit.plugin.java;
 
+import com.avaje.ebean.EbeanServer;
+import com.avaje.ebean.EbeanServerFactory;
+import com.avaje.ebean.config.DataSourceConfig;
+import com.avaje.ebean.config.ServerConfig;
 import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
 import org.bukkit.Server;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
@@ -25,6 +31,7 @@ public abstract class JavaPlugin implements Plugin {
     private ClassLoader classLoader = null;
     private Configuration config = null;
     private boolean naggable = true;
+    private EbeanServer ebean = null;
 
     public JavaPlugin() {
     }
@@ -147,8 +154,40 @@ public abstract class JavaPlugin implements Plugin {
             this.classLoader = classLoader;
             this.config = new Configuration(new File(dataFolder, "config.yml"));
             this.config.load();
+
+            if (description.isDatabaseEnabled()) {
+                ServerConfig db = new ServerConfig();
+
+                db.setDefaultServer(false);
+                db.setRegister(false);
+                db.setClasses(getDatabaseClasses());
+                db.setName(description.getName());
+                server.configureDbConfig(db);
+
+                DataSourceConfig ds = db.getDataSourceConfig();
+                ds.setUrl(replaceDatabaseString(ds.getUrl()));
+                getDataFolder().mkdirs();
+
+                ClassLoader previous = Thread.currentThread().getContextClassLoader();
+                Thread.currentThread().setContextClassLoader(classLoader);
+                ebean = EbeanServerFactory.create(db);
+                Thread.currentThread().setContextClassLoader(previous);
             }
         }
+    }
+
+    /**
+     * Provides a list of all classes that should be persisted in the database
+     *
+     * @return List of Classes that are Ebeans
+     */
+    public List<Class<?>> getDatabaseClasses() {
+        return new ArrayList<Class<?>>();
+    }
+
+    private String replaceDatabaseString(String input) {
+        return input.replaceAll("\\{DIR\\}", getDataFolder().getPath().replaceAll("\\\\", "/"));
+    }
 
     /**
      * Gets the initialization status of this plugin
@@ -199,4 +238,7 @@ public abstract class JavaPlugin implements Plugin {
         this.naggable = canNag;;
     }
 
+    public EbeanServer getDatabase() {
+        return ebean;
+    }
 }