private static ExpressionResolutionResult ResolveExpression(PropertyMap propertyMap, Type currentType,
Expression instanceParameter, LetPropertyMaps letPropertyMaps)
{
var result = new ExpressionResolutionResult(instanceParameter, currentType);
var matchingExpressionConverter =
ExpressionResultConverters.FirstOrDefault(c => c.CanGetExpressionResolutionResult(result, propertyMap));
result = matchingExpressionConverter?.GetExpressionResolutionResult(result, propertyMap, letPropertyMaps)
?? throw new Exception("Can't resolve this to Queryable Expression");
if (propertyMap.NullSubstitute != null && result.Type.IsNullableType())
{
var currentChild = result.ResolutionExpression;
var currentChildType = result.Type;
var nullSubstitute = propertyMap.NullSubstitute;
var newParameter = result.ResolutionExpression;
var converter = new NullSubstitutionConversionVisitor(newParameter, nullSubstitute);
currentChild = converter.Visit(currentChild);
currentChildType = currentChildType.GetTypeOfNullable();
return(new ExpressionResolutionResult(currentChild, currentChildType));
}
return(result);
}
private ExpressionResolutionResult ResolveExpression(IMemberMap propertyMap, Type currentType, Expression instanceParameter, LetPropertyMaps letPropertyMaps)
{
var result = new ExpressionResolutionResult(instanceParameter, currentType);
var matchingExpressionConverter = _configurationProvider.ResultConverters.FirstOrDefault(c => c.CanGetExpressionResolutionResult(result, propertyMap));
if (matchingExpressionConverter == null)
{
ThrowCannotMap(propertyMap, result);
return(null);
}
result = matchingExpressionConverter.GetExpressionResolutionResult(result, propertyMap, letPropertyMaps);
if (propertyMap.NullSubstitute != null && result.Type.IsNullableType())
{
var currentChild = result.ResolutionExpression;
var currentChildType = result.Type;
var nullSubstitute = propertyMap.NullSubstitute;
var newParameter = result.ResolutionExpression;
var converter = new NullSubstitutionConversionVisitor(newParameter, nullSubstitute);
currentChild = converter.Visit(currentChild);
currentChildType = currentChildType.GetTypeOfNullable();
return(new ExpressionResolutionResult(currentChild, currentChildType));
}
return(result);
}
public ExpressionResolutionResult GetExpressionResolutionResult(ExpressionResolutionResult expressionResolutionResult, PropertyMap propertyMap, IValueResolver valueResolver)
{
Expression currentChild = expressionResolutionResult.ResolutionExpression;
Type currentChildType = expressionResolutionResult.Type;
var nullSubstitute = propertyMap.NullSubstitute;
var newParameter = expressionResolutionResult.ResolutionExpression;
var converter = new NullSubstitutionConversionVisitor(newParameter, nullSubstitute);
currentChild = converter.Visit(currentChild);
currentChildType = currentChildType.GetTypeOfNullable();
return(new ExpressionResolutionResult(currentChild, currentChildType));
}
public ExpressionResolutionResult GetExpressionResolutionResult(ExpressionResolutionResult expressionResolutionResult, PropertyMap propertyMap, IValueResolver valueResolver)
{
Expression currentChild = expressionResolutionResult.ResolutionExpression;
Type currentChildType = expressionResolutionResult.Type;
var nullSubstitute = propertyMap.NullSubstitute;
var newParameter = expressionResolutionResult.ResolutionExpression;
var converter = new NullSubstitutionConversionVisitor(newParameter, nullSubstitute);
currentChild = converter.Visit(currentChild);
currentChildType = currentChildType.GetTypeOfNullable();
return new ExpressionResolutionResult(currentChild, currentChildType);
}