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MemberConfigurationExpression.cs
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100 lines (81 loc) · 2.75 KB
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using System.Linq.Expressions;
namespace DataAvail.LinqMapper
{
internal class MemberConfigurationExpression
{
internal MemberConfigurationExpression(PropertyInfo SrcPropertyInfo, PropertyInfo DestPropertyInfo)
: this(DestPropertyInfo)
{
_srcPropertyInfo = SrcPropertyInfo;
}
internal MemberConfigurationExpression(PropertyInfo DestPropertyInfo)
{
_destPropertyInfo = DestPropertyInfo;
}
private readonly PropertyInfo _destPropertyInfo;
private PropertyInfo _srcPropertyInfo;
internal PropertyInfo SrcPropertyInfo
{
get { return _srcPropertyInfo; }
}
internal PropertyInfo DestPropertyInfo
{
get { return _destPropertyInfo; }
}
protected LambdaExpression ResolveExpression { get; set; }
internal Expression Bind(Expression ParameterExpression)
{
if (ResolveExpression == null)
{
return TypeMap.Bind(SrcPropertyInfo, DestPropertyInfo, ParameterExpression);
}
else
{
return ResolveExpression.ConvertParam(ParameterExpression).Body;
}
}
internal bool IsMapped(string[] Expands)
{
return ResolveExpression != null || TypeMap.IsMapped(SrcPropertyInfo, DestPropertyInfo, Expands);
}
public void MapFrom(PropertyInfo srcProperty)
{
_srcPropertyInfo = srcProperty;
}
}
internal class MemberConfigurationExpression<TSrc> : MemberConfigurationExpression, IMemberConfigurationExpression<TSrc>
{
internal MemberConfigurationExpression(PropertyInfo DestPropertyInfo)
: base(DestPropertyInfo)
{
}
internal MemberConfigurationExpression(PropertyInfo SrcPropertyInfo, PropertyInfo DestPropertyInfo)
: base(SrcPropertyInfo, DestPropertyInfo)
{
}
private Expression<Func<TSrc, bool>> _condition;
#region IMemberConfigurationExpression<TSrc>
public void MapFrom<TMember>(Expression<Func<TSrc, TMember>> sourceMember)
{
MapFrom((PropertyInfo)((MemberExpression)sourceMember.Body).Member);
}
public void Condition(Expression<Func<TSrc, bool>> condition)
{
_condition = condition;
}
public void Ignore()
{
base.MapFrom(null);
}
public void ResolveUsing<TMember>(Expression<Func<TSrc, TMember>> resolver)
{
ResolveExpression = resolver;
}
#endregion
}
}