public static NamedExpression CreateFromMemberName(string memberName, Expression innerExpression)
{
LinqUtility.CheckNotNull("memberName", memberName);
LinqUtility.CheckNotNull("innerExpression", innerExpression);
return(new NamedExpression(memberName, innerExpression));
}
public NamedExpression(string name, Expression expression)
{
LinqUtility.CheckNotNull("expression", expression);
_name = name;
_expression = expression;
}
/// <summary>
/// Initializes a new instance of <see cref="ArangoQueryProvider"/> using a custom <see cref="IQueryParser"/>.
/// </summary>
public ArangoQueryProvider(Type queryableType, IQueryParser queryParser, IQueryExecutor executor, IArangoDatabase db)
: base(LinqUtility.CheckNotNull("queryParser", queryParser), LinqUtility.CheckNotNull("executor", executor))
{
LinqUtility.CheckNotNull("queryableType", queryableType);
CheckQueryableType(queryableType);
_queryableType = queryableType;
this.db = db;
}
public static IEnumerable <MethodInfo> WhereNameMatches(this IEnumerable <MethodInfo> input, string name)
{
LinqUtility.CheckNotNull("input", input);
LinqUtility.CheckNotNullOrEmpty("name", name);
if (input.Count(mi => mi.Name == name) == 0)
{
throw new InvalidOperationException($"No suitable queryable method found for {name}");
}
return(input.Where(mi => mi.Name == name));
}
public QueryData GetQueryData(Expression expression)
{
LinqUtility.CheckNotNull("expression", expression);
var queryModel = GenerateQueryModel(expression);
var visitor = new ArangoModelVisitor(db);
visitor.VisitQueryModel(queryModel);
visitor.QueryData.Query = visitor.QueryText.ToString();
return(visitor.QueryData);
}
protected override Expression Accept(ExpressionVisitor visitor)
{
LinqUtility.CheckNotNull("visitor", visitor);
var specificVisitor = visitor as INamedExpressionVisitor;
if (specificVisitor != null)
{
return(specificVisitor.VisitNamed(this));
}
else
{
return(base.Accept(visitor));
}
}
protected override Expression VisitChildren(ExpressionVisitor visitor)
{
LinqUtility.CheckNotNull("visitor", visitor);
var newExpression = visitor.Visit(_expression);
if (newExpression != _expression)
{
return(new NamedExpression(_name, newExpression));
}
else
{
return(this);
}
}
public static Expression CreateNewExpressionWithNamedArguments(IArangoDatabase db, NewExpression expression)
{
LinqUtility.CheckNotNull("expression", expression);
return(CreateNewExpressionWithNamedArguments(db, expression, expression.Arguments));
}
public static IEnumerable <MethodInfo> WithoutEqualityComparer(this IEnumerable <MethodInfo> input)
{
LinqUtility.CheckNotNull("input", input);
return(input.Where(mi => !HasGenericDelegateOfType(mi, typeof(IEqualityComparer <>))));
}
public static IEnumerable <MethodInfo> WithoutResultSelector(this IEnumerable <MethodInfo> input)
{
LinqUtility.CheckNotNull("input", input);
return(input.Where(mi => mi.GetParameters().All(p => p.Name != "resultSelector")));
}
public static IEnumerable <MethodInfo> WithoutIndexSelector(this IEnumerable <MethodInfo> input, int parameterPosition)
{
LinqUtility.CheckNotNull("input", input);
return(input.Where(mi => !HasIndexSelectorParameter(mi, parameterPosition)));
}