public TypeMappingSpec <TTgt, TSrc> From <TSrcProp>(Expression <Func <TSrc, TSrcProp> > propertyExpression)
{
var srcParam = Expression.Parameter(typeof(TSrc));
var tgtParam = Expression.Parameter(typeof(TTgt));
var srcExpr = Expression.Property(srcParam, ((MemberExpression)propertyExpression.Body).Member as PropertyInfo);
var tgtSetterInfo = _targetProperty.GetSetMethod();
var tgtSetterExpr = Expression.Call(tgtParam, tgtSetterInfo, srcExpr);
var setterAction = Expression.Lambda <Action <TTgt, TSrc> >(tgtSetterExpr, tgtParam, srcParam)
.Compile();
var specProperties = _spec.Properties();
return(_spec
.Transforms().WithMappingActions(
specProperties.MappingActions
.Concat(new[] { setterAction })
.ToArray()
)
.Transforms().WithSourceProperties(
specProperties.SourceProperties
.Where(x => x != srcExpr.Member)
.ToArray()
)
.Transforms().WithTargetProperties(
specProperties.TargetProperties
.Where(x => x != _targetProperty)
.ToArray()
)
);
}
public TypeMappingSpec <TTgt, TSrc> ReturnNull()
{
return(_spec.Transforms()
.WithAssembler(new ReturnNullAssembler <TTgt, TSrc>()));
}