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Using a Database Over a Webservice

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29 May 20073 min read 48.6K   539   44  
This article shows an example implementation of a database used over a Web-Service
/* Copyright (C) 2004 - 2007  db4objects Inc.  http://www.db4o.com */

using Db4objects.Db4o;
using Db4objects.Db4o.Config;
using Db4objects.Db4o.Ext;

namespace Db4objects.Db4o.Ext
{
	/// <summary>extended factory class with static methods to open special db4o sessions.
	/// 	</summary>
	/// <remarks>extended factory class with static methods to open special db4o sessions.
	/// 	</remarks>
	public class ExtDb4oFactory : Db4oFactory
	{
		/// <summary>
		/// Operates just like
		/// <see cref="ExtDb4oFactory.OpenMemoryFile">ExtDb4oFactory.OpenMemoryFile</see>
		/// , but uses
		/// the global db4o
		/// <see cref="IConfiguration">Configuration</see>
		/// context.
		/// opens an
		/// <see cref="IObjectContainer">IObjectContainer</see>
		/// for in-memory use .
		/// <br /><br />In-memory ObjectContainers are useful for maximum performance
		/// on small databases, for swapping objects or for storing db4o format data
		/// to other media or other databases.<br /><br />Be aware of the danger of running
		/// into OutOfMemory problems or complete loss of all data, in case of hardware
		/// or JVM failures.<br /><br />
		/// </summary>
		/// <param name="memoryFile">
		/// a
		/// <see cref="MemoryFile">MemoryFile</see>
		/// 
		/// to store the raw byte data.
		/// </param>
		/// <returns>
		/// an open
		/// <see cref="IObjectContainer">ObjectContainer</see>
		/// </returns>
		/// <seealso cref="MemoryFile">MemoryFile</seealso>
		public static IObjectContainer OpenMemoryFile(MemoryFile memoryFile)
		{
			return OpenMemoryFile1(Db4oFactory.NewConfiguration(), memoryFile);
		}

		/// <summary>
		/// opens an
		/// <see cref="IObjectContainer">IObjectContainer</see>
		/// for in-memory use .
		/// <br /><br />In-memory ObjectContainers are useful for maximum performance
		/// on small databases, for swapping objects or for storing db4o format data
		/// to other media or other databases.<br /><br />Be aware of the danger of running
		/// into OutOfMemory problems or complete loss of all data, in case of hardware
		/// or JVM failures.<br /><br />
		/// </summary>
		/// <param name="config">
		/// a custom
		/// <see cref="IConfiguration">Configuration</see>
		/// instance to be obtained via
		/// <see cref="Db4oFactory.NewConfiguration">Db4oFactory.NewConfiguration</see>
		/// </param>
		/// <param name="memoryFile">
		/// a
		/// <see cref="MemoryFile">MemoryFile</see>
		/// 
		/// to store the raw byte data.
		/// </param>
		/// <returns>
		/// an open
		/// <see cref="IObjectContainer">ObjectContainer</see>
		/// </returns>
		/// <seealso cref="MemoryFile">MemoryFile</seealso>
		public static IObjectContainer OpenMemoryFile(IConfiguration config, MemoryFile memoryFile
			)
		{
			return OpenMemoryFile1(config, memoryFile);
		}
	}
}

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