#region Disclaimer / License
// Copyright (C) 2010, Jackie Ng
// http://trac.osgeo.org/mapguide/wiki/maestro, jumpinjackie@gmail.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.Data;
using OSGeo.MapGuide.MaestroAPI.Schema;
namespace OSGeo.MapGuide.MaestroAPI.Feature
{
///
/// Base implementation of the
/// interface
///
public abstract class FeatureReaderBase : ReaderBase, IFeatureReader
{
protected abstract IFeature ReadNextFeature();
private ClassDefinition _cls;
public OSGeo.MapGuide.MaestroAPI.Schema.ClassDefinition ClassDefinition
{
get { return _cls; }
protected set
{
_cls = value;
this.FieldCount = _cls.Properties.Count;
}
}
public IFeatureReader GetFeatureObject(string name)
{
return ((IFeature)this.Current).GetFeatureObject(name);
}
public IFeatureReader GetFeatureObject(int index)
{
return ((IFeature)this.Current).GetFeatureObject(index);
}
public override string GetName(int index)
{
return this.ClassDefinition.Properties[index].Name;
}
public override Type GetFieldType(int i)
{
return ClrFdoTypeMap.GetClrType(this.ClassDefinition[i]);
}
public override ReaderType ReaderType
{
get { return ReaderType.Feature; }
}
protected override IRecord ReadNextRecord()
{
return ReadNextFeature();
}
class Enumerator : IEnumerator
{
private FeatureReaderBase _reader;
public Enumerator(FeatureReaderBase reader)
{
_reader = reader;
}
public IFeature Current
{
get { return (IFeature)_reader.Current; }
}
public void Dispose()
{
}
object IEnumerator.Current
{
get { return this.Current; }
}
public bool MoveNext()
{
return _reader.ReadNext();
}
public void Reset()
{
throw new NotImplementedException();
}
}
public IEnumerator GetEnumerator()
{
return new Enumerator(this);
}
IEnumerator IEnumerable.GetEnumerator()
{
return new Enumerator(this);
}
}
}