private static bool IsCommonAttribute(SCIMAttributeExpression scimAttributeExpression)
{
return(MAPPING_PATH_TO_PROPERTYNAMES.ContainsKey(scimAttributeExpression.GetFullPath()));
}
private static Expression Evaluate(this SCIMAttributeExpression attributeExpression, ParameterExpression parameterExpression, Func <ParameterExpression, Expression> callback = null)
{
var originalParameterExpression = parameterExpression;
if (parameterExpression.Type == typeof(SCIMRepresentation))
{
parameterExpression = Expression.Parameter(typeof(SCIMRepresentationAttribute), "ra");
}
var schemaAttributeProperty = Expression.Property(parameterExpression, "SchemaAttribute");
var valuesProperty = Expression.Property(parameterExpression, "Values");
var nameProperty = Expression.Property(schemaAttributeProperty, "Name");
var notEqual = Expression.NotEqual(schemaAttributeProperty, Expression.Constant(null));
var equal = Expression.Equal(nameProperty, Expression.Constant(attributeExpression.Name));
var result = Expression.AndAlso(notEqual, equal);
var complexAttributeExpression = attributeExpression as SCIMComplexAttributeExpression;
if (complexAttributeExpression != null)
{
if (originalParameterExpression.Type == typeof(SCIMRepresentation))
{
var lambdaExpression = complexAttributeExpression.GroupingFilter.Evaluate(parameterExpression);
result = Expression.AndAlso(result, lambdaExpression);
}
else
{
var logicalExpr = complexAttributeExpression.GroupingFilter as SCIMLogicalExpression;
if (logicalExpr != null)
{
var subParameter = Expression.Parameter(typeof(SCIMRepresentationAttribute), Guid.NewGuid().ToString("N"));
var leftExpr = logicalExpr.LeftExpression.Evaluate(subParameter);
var rightExpr = logicalExpr.RightExpression.Evaluate(subParameter);
var anyLeftLambda = Expression.Lambda <Func <SCIMRepresentationAttribute, bool> >(leftExpr, subParameter);
var anyRightLambda = Expression.Lambda <Func <SCIMRepresentationAttribute, bool> >(rightExpr, subParameter);
var anyLeftCall = Expression.Call(typeof(Enumerable), "Any", new[] { typeof(SCIMRepresentationAttribute) }, valuesProperty, anyLeftLambda);
var anyRightCall = Expression.Call(typeof(Enumerable), "Any", new[] { typeof(SCIMRepresentationAttribute) }, valuesProperty, anyRightLambda);
if (logicalExpr.LogicalOperator == SCIMLogicalOperators.AND)
{
result = Expression.AndAlso(result, Expression.AndAlso(anyLeftCall, anyRightCall));
}
else
{
result = Expression.AndAlso(result, Expression.Or(anyLeftCall, anyRightCall));
}
}
else
{
var subParameter = Expression.Parameter(typeof(SCIMRepresentationAttribute), Guid.NewGuid().ToString("N"));
var lambdaExpression = complexAttributeExpression.GroupingFilter.Evaluate(subParameter);
var anyLambda = Expression.Lambda <Func <SCIMRepresentationAttribute, bool> >(lambdaExpression, subParameter);
var anyCall = Expression.Call(typeof(Enumerable), "Any", new[] { typeof(SCIMRepresentationAttribute) }, valuesProperty, anyLambda);
result = Expression.AndAlso(result, anyCall);
}
}
}
if (attributeExpression.Child != null)
{
var firstSubParameter = Expression.Parameter(typeof(SCIMRepresentationAttribute), Guid.NewGuid().ToString("N"));
var secondSubParameter = Expression.Parameter(typeof(SCIMRepresentationAttribute), Guid.NewGuid().ToString("N"));
var lambdaExpression = attributeExpression.Child.Evaluate(firstSubParameter, callback);
var anyLambda = Expression.Lambda <Func <SCIMRepresentationAttribute, bool> >(lambdaExpression, firstSubParameter);
var anyCall = Expression.Call(typeof(Enumerable), "Any", new[] { typeof(SCIMRepresentationAttribute) }, valuesProperty, anyLambda);
result = Expression.AndAlso(result, anyCall);
}
if (callback != null && attributeExpression.Child == null)
{
result = Expression.AndAlso(result, callback(parameterExpression));
}
if (originalParameterExpression.Type == typeof(SCIMRepresentation))
{
var attributesProperty = Expression.Property(originalParameterExpression, "Attributes");
var anyLambda = Expression.Lambda <Func <SCIMRepresentationAttribute, bool> >(result, parameterExpression);
return(Expression.Call(typeof(Enumerable), "Any", new[] { typeof(SCIMRepresentationAttribute) }, attributesProperty, anyLambda));
}
return(result);
}
public SCIMComparisonExpression(SCIMComparisonOperators comparisonOperator, SCIMAttributeExpression leftExpression, string value)
{
ComparisonOperator = comparisonOperator;
LeftExpression = leftExpression;
Value = value;
}