public static ICollection <SCIMRepresentationAttribute> EvaluateAttributes(this SCIMExpression expression, IQueryable <SCIMRepresentationAttribute> attributes, bool isStrictPath)
{
var attr = expression as SCIMAttributeExpression;
if (attr.SchemaAttribute == null || string.IsNullOrWhiteSpace(attr.SchemaAttribute.Id))
{
return(new List <SCIMRepresentationAttribute>());
}
else
{
var treeNodeParameter = Expression.Parameter(typeof(SCIMRepresentationAttribute), "tn");
var anyWhereExpression = expression.EvaluateAttributes(treeNodeParameter);
var enumarableType = typeof(Queryable);
var whereMethod = enumarableType.GetMethods()
.Where(m => m.Name == "Where" && m.IsGenericMethodDefinition)
.Where(m => m.GetParameters().Count() == 2).First().MakeGenericMethod(typeof(SCIMRepresentationAttribute));
var equalLambda = Expression.Lambda <Func <SCIMRepresentationAttribute, bool> >(anyWhereExpression, treeNodeParameter);
var whereExpr = Expression.Call(whereMethod, Expression.Constant(attributes), equalLambda);
var finalSelectArg = Expression.Parameter(typeof(IQueryable <SCIMRepresentationAttribute>), "f");
var finalSelectRequestBody = Expression.Lambda(whereExpr, new ParameterExpression[] { finalSelectArg });
var result = (IQueryable <SCIMRepresentationAttribute>)finalSelectRequestBody.Compile().DynamicInvoke(attributes);
var fullPath = attr.GetFullPath();
var res = SCIMRepresentation.BuildFlatAttributes(result.ToList());
return(res.Where((a) => a != null && (isStrictPath ? fullPath == a.FullPath : fullPath.StartsWith(a.FullPath) || a.FullPath.StartsWith(fullPath))).ToList());
}
}
public static Expression Evaluate(this SCIMExpression expression, ParameterExpression parameterExpression)
{
var compAttrExpression = expression as SCIMComparisonExpression;
var attrExpression = expression as SCIMAttributeExpression;
var logicalExpression = expression as SCIMLogicalExpression;
var notExpression = expression as SCIMNotExpression;
var presentExpression = expression as SCIMPresentExpression;
if (compAttrExpression != null)
{
return(compAttrExpression.Evaluate(parameterExpression));
}
if (attrExpression != null)
{
return(attrExpression.Evaluate(parameterExpression));
}
if (logicalExpression != null)
{
return(logicalExpression.Evaluate(parameterExpression));
}
if (notExpression != null)
{
return(notExpression.Evaluate(parameterExpression));
}
if (presentExpression != null)
{
return(presentExpression.Evaluate(parameterExpression));
}
return(null);
}
public static LambdaExpression Evaluate(this SCIMExpression expression, IQueryable <SCIMRepresentation> representations)
{
var representationParameter = Expression.Parameter(typeof(SCIMRepresentation), "rp");
var anyLambdaExpression = expression.Evaluate(representationParameter);
var enumarableType = typeof(Queryable);
var whereMethod = enumarableType.GetMethods()
.Where(m => m.Name == "Where" && m.IsGenericMethodDefinition)
.Where(m => m.GetParameters().Count() == 2).First().MakeGenericMethod(typeof(SCIMRepresentation));
var equalLambda = Expression.Lambda <Func <SCIMRepresentation, bool> >(anyLambdaExpression, representationParameter);
var whereExpr = Expression.Call(whereMethod, Expression.Constant(representations), equalLambda);
var finalSelectArg = Expression.Parameter(typeof(IQueryable <SCIMRepresentation>), "f");
var finalSelectRequestBody = Expression.Lambda(whereExpr, new ParameterExpression[] { finalSelectArg });
return(finalSelectRequestBody);
}
public static LambdaExpression EvaluateOrderBy(this SCIMExpression expression, IQueryable <SCIMRepresentation> representations, SearchSCIMRepresentationOrders order)
{
var attrExpression = expression as SCIMAttributeExpression;
if (attrExpression == null)
{
return(null);
}
var result = EvaluateOrderByMetadata(attrExpression, representations, order);
if (result == null)
{
result = EvaluateOrderByProperty(attrExpression, representations, order);
}
return(result);
}
public SCIMLogicalExpression(SCIMLogicalOperators logicalOperator, SCIMExpression leftExpression, SCIMExpression rightExpression)
{
LogicalOperator = logicalOperator;
LeftExpression = leftExpression;
RightExpression = rightExpression;
}
