Adapting Appearance Stone system from L2jServer.

trunk/java/com/l2jserver/gameserver/model/variables/ItemVariables.java

@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2004-2015 L2J DataPack
+ * 
+ * This file is part of L2J DataPack.
+ * 
+ * L2J DataPack is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * L2J DataPack is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.l2jserver.gameserver.model.variables;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Map.Entry;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import com.l2jserver.L2DatabaseFactory;
+
+/**
+ * @author UnAfraid
+ */
+public class ItemVariables extends AbstractVariables
+{
+	private static final Logger _log = Logger.getLogger(ItemVariables.class.getName());
+	
+	// SQL Queries.
+	private static final String SELECT_QUERY = "SELECT * FROM item_variables WHERE id = ?";
+	private static final String SELECT_COUNT = "SELECT COUNT(*) FROM item_variables WHERE id = ?";
+	private static final String DELETE_QUERY = "DELETE FROM item_variables WHERE id = ?";
+	private static final String INSERT_QUERY = "INSERT INTO item_variables (id, var, val) VALUES (?, ?, ?)";
+	
+	private final int _objectId;
+	
+	// Static Constants
+	public static final String VISUAL_ID = "visualId";
+	public static final String VISUAL_APPEARANCE_STONE_ID = "visualAppearanceStoneId";
+	public static final String VISUAL_APPEARANCE_LIFE_TIME = "visualAppearanceLifetime";
+	
+	public ItemVariables(int objectId)
+	{
+		_objectId = objectId;
+		restoreMe();
+	}
+	
+	public static boolean hasVariables(int objectId)
+	{
+		// Restore previous variables.
+		try (Connection con = L2DatabaseFactory.getInstance().getConnection();
+			PreparedStatement st = con.prepareStatement(SELECT_COUNT))
+		{
+			st.setInt(1, objectId);
+			try (ResultSet rset = st.executeQuery())
+			{
+				if (rset.next())
+				{
+					return rset.getInt(1) > 0;
+				}
+			}
+		}
+		catch (SQLException e)
+		{
+			_log.log(Level.WARNING, ItemVariables.class.getSimpleName() + ": Couldn't select variables count for: " + objectId, e);
+			return false;
+		}
+		return true;
+	}
+	
+	@Override
+	public boolean restoreMe()
+	{
+		// Restore previous variables.
+		try (Connection con = L2DatabaseFactory.getInstance().getConnection();
+			PreparedStatement st = con.prepareStatement(SELECT_QUERY))
+		{
+			st.setInt(1, _objectId);
+			try (ResultSet rset = st.executeQuery())
+			{
+				while (rset.next())
+				{
+					set(rset.getString("var"), rset.getString("val"), false);
+				}
+			}
+		}
+		catch (SQLException e)
+		{
+			_log.log(Level.WARNING, getClass().getSimpleName() + ": Couldn't restore variables for: " + _objectId, e);
+			return false;
+		}
+		finally
+		{
+			compareAndSetChanges(true, false);
+		}
+		return true;
+	}
+	
+	@Override
+	public boolean storeMe()
+	{
+		// No changes, nothing to store.
+		if (!hasChanges())
+		{
+			return false;
+		}
+		
+		try (Connection con = L2DatabaseFactory.getInstance().getConnection())
+		{
+			// Clear previous entries.
+			try (PreparedStatement st = con.prepareStatement(DELETE_QUERY))
+			{
+				st.setInt(1, _objectId);
+				st.execute();
+			}
+			
+			// Insert all variables.
+			try (PreparedStatement st = con.prepareStatement(INSERT_QUERY))
+			{
+				st.setInt(1, _objectId);
+				for (Entry<String, Object> entry : getSet().entrySet())
+				{
+					st.setString(2, entry.getKey());
+					st.setString(3, String.valueOf(entry.getValue()));
+					st.addBatch();
+				}
+				st.executeBatch();
+			}
+		}
+		catch (SQLException e)
+		{
+			_log.log(Level.WARNING, getClass().getSimpleName() + ": Couldn't update variables for: " + _objectId, e);
+			return false;
+		}
+		finally
+		{
+			compareAndSetChanges(true, false);
+		}
+		return true;
+	}
+	
+	@Override
+	public boolean deleteMe()
+	{
+		try (Connection con = L2DatabaseFactory.getInstance().getConnection())
+		{
+			// Clear previous entries.
+			try (PreparedStatement st = con.prepareStatement(DELETE_QUERY))
+			{
+				st.setInt(1, _objectId);
+				st.execute();
+			}
+			
+			// Clear all entries
+			getSet().clear();
+		}
+		catch (Exception e)
+		{
+			_log.log(Level.WARNING, getClass().getSimpleName() + ": Couldn't delete variables for: " + _objectId, e);
+			return false;
+		}
+		return true;
+	}
+}