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// $Id$
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
//
using System;
using Org.Apache.Etch.Bindings.Csharp.Msg;
using Org.Apache.Etch.Bindings.Csharp.Support;
namespace Org.Apache.Etch.Bindings.Csharp.Util
{
/// <summary>
/// Serialize a DateTime into our network standard format, which
/// is the unix standard of milliseconds since jan 1, 1970 utc.
/// </summary>
public class DateSerializer : ImportExportHelper
{
private const String FIELD_NAME = "dateTime";
private readonly XType type;
private readonly Field field;
public DateSerializer( XType type, Field field )
{
this.type = type;
this.field = field;
}
/// <summary>
/// Defines custom fields in the value factory so that the importer
/// can find them
/// </summary>
/// <param name="type"></param>
/// <param name="class2type"></param>
public static void Init( XType type, Class2TypeMap class2type )
{
Field field = type.GetField( FIELD_NAME );
class2type.Add( typeof( DateTime ), type );
type.SetComponentType( typeof( DateTime ) );
type.SetImportExportHelper( new DateSerializer( type, field ) );
type.PutValidator( field, Validator_long.Get( 0 ) );
type.Lock();
}
public override Object ImportValue( StructValue sv )
{
long ms = (long)sv.Get(field);
return new DateTime(epoch + ms * TICKS_PER_MS, DateTimeKind.Utc).ToLocalTime();
}
public override StructValue ExportValue( ValueFactory vf, Object value )
{
long ms = (((DateTime)value).ToUniversalTime().Ticks - epoch) / TICKS_PER_MS;
StructValue sv = new StructValue( type, vf );
sv.Add(field, ms);
return sv;
}
private const long TICKS_PER_MS = 10000;
private static readonly long epoch =
new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).Ticks;
}
}