/// <summary>
///
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="expression"></param>
/// <param name="isNot"></param>
/// <param name="isEqualsTo"></param>
/// <returns></returns>
private static QueryGroup ParseContainsForArrayOrList <TEntity>(MethodCallExpression expression,
bool isNot,
bool isEqualsTo)
where TEntity : class
{
// TODO: Refactor this
// Return null if there is no any arguments
if (expression.Arguments?.Any() != true)
{
return(null);
}
// Get the last arg
var last = expression
.Arguments
.LastOrDefault();
// Make sure the last arg is a member
if (last == null || last?.IsMember() == false)
{
throw new NotSupportedException($"Expression '{expression.ToString()}' is currently not supported.");
}
// Make sure it is a property info
var member = last.ToMember().Member;
if (member.IsPropertyInfo() == false)
{
throw new NotSupportedException($"Expression '{expression.ToString()}' is currently not supported.");
}
// Get the property
var property = member.ToPropertyInfo();
// Make sure the property is in the entity
if (PropertyCache.Get <TEntity>().FirstOrDefault(p => string.Equals(p.PropertyInfo.Name, property.Name, StringComparison.OrdinalIgnoreCase)) == null)
{
throw new InvalidExpressionException($"Invalid expression '{expression.ToString()}'. The property {property.Name} is not defined on a target type '{typeof(TEntity).FullName}'.");
}
// Get the values
var values = (object)null;
// Array/List Separation
if (expression.Object == null)
{
// Expecting an array
values = expression.Arguments.First().GetValue();
}
else
{
// Expecting a list here
values = expression.Object.GetValue();
}
// Add to query fields
var operation = (isNot == false && isEqualsTo == true) ? Operation.In : Operation.NotIn;
var queryField = new QueryField(PropertyMappedNameCache.Get(property), operation, values);
// Return the result
var queryGroup = new QueryGroup(queryField);
// Set the IsNot value
queryGroup.SetIsNot(isNot == true && isEqualsTo == false);
// Return the instance
return(queryGroup);
}
/// <summary>
/// Gets the mapped-name for the current property.
/// </summary>
/// <returns>The mapped-name value.</returns>
public string GetMappedName()
{
return(mappedName ??= PropertyMappedNameCache.Get(GetDeclaringType(), PropertyInfo));
}
/// <summary>
///
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="expression"></param>
/// <param name="isNot"></param>
/// <param name="isEqualsTo"></param>
/// <returns></returns>
private static QueryGroup ParseAllOrAnyForArrayOrAnyForList <TEntity>(MethodCallExpression expression,
bool isNot,
bool isEqualsTo)
where TEntity : class
{
// TODO: Refactor this
// Return null if there is no any arguments
if (expression.Arguments?.Any() != true)
{
return(null);
}
// Get the last property
var last = expression
.Arguments
.LastOrDefault();
// Make sure the last is a member
if (last == null || last?.IsLambda() == false)
{
throw new NotSupportedException($"Expression '{expression.ToString()}' is currently not supported.");
}
// Make sure the last is a binary
var lambda = last.ToLambda();
if (lambda.Body.IsBinary() == false)
{
throw new NotSupportedException($"Expression '{expression.ToString()}' is currently not supported.");
}
// Make sure it is a member
var binary = lambda.Body.ToBinary();
if (binary.Left.IsMember() == false && binary.Right.IsMember() == false)
{
throw new NotSupportedException($"Expression '{expression.ToString()}' is currently not supported. Expression must contain a single condition to any property of type '{typeof(TEntity).FullName}'.");
}
// Make sure it is a property
var member = binary.Left.IsMember() ? binary.Left.ToMember().Member : binary.Right.ToMember().Member;
if (member.IsPropertyInfo() == false)
{
throw new NotSupportedException($"Expression '{expression.ToString()}' is currently not supported.");
}
// Make sure the property is in the entity
var property = member.ToPropertyInfo();
if (PropertyCache.Get <TEntity>().FirstOrDefault(p => string.Equals(p.PropertyInfo.Name, property.Name, StringComparison.OrdinalIgnoreCase)) == null)
{
throw new InvalidExpressionException($"Invalid expression '{expression.ToString()}'. The property {property.Name} is not defined on a target type '{typeof(TEntity).FullName}'.");
}
// Variables needed for fields
var queryFields = new List <QueryField>();
var conjunction = Conjunction.And;
// Support only various methods
if (expression.Method.Name == "Any")
{
conjunction = Conjunction.Or;
}
else if (expression.Method.Name == "All")
{
conjunction = Conjunction.And;
}
// Call the method
var first = expression.Arguments.First();
var values = (object)null;
// Identify the type of the argument
if (first.IsNewArray())
{
values = first.ToNewArray().GetValue();
}
else if (first.IsMember())
{
values = first.ToMember().GetValue();
}
// Values must be an array
if (values is System.Collections.IEnumerable)
{
var operation = QueryField.GetOperation(binary.NodeType);
foreach (var value in (System.Collections.IEnumerable)values)
{
var queryField = new QueryField(PropertyMappedNameCache.Get(property), operation, value);
queryFields.Add(queryField);
}
}
// Return the result
return(new QueryGroup(queryFields, conjunction, (isNot == isEqualsTo)));
}
