DQueryAttributes

struct DQueryAttributes (

QueryType

Attributes...

) {

alias type = QueryType;

alias attributes = Attributes;

static auto opCall [@property getter];

static auto parent [@property getter];

static auto first [@property getter];

static auto firstOr [@property getter];

static auto firstOrElse [@property getter];

static Throwable firstOrThrow [@property setter];

static auto hasAllOf [@property getter];

static auto hasAnyOf [@property getter];

static auto hasNoneOf [@property getter];

static auto anyOf [@property getter];

static auto noneOf [@property getter];

template ensure(string Attr : "length");

}

Alias This

Members

Aliases

attributes alias attributes = Attributes: Returns a tuple of attributes in the query.
type alias type = QueryType: Returns the type being queried.

Manifest constants

empty enum empty;: Returns true if the list of attributes is empty.
length enum length;: Returns the number of attributes in the query.
unique enum unique;: Returns a transformed list of attributes with all duplicateds removed.

Properties

anyOf auto anyOf [@property getter]: Returns a subset of the list of attributes which match at least one of the given types.
first auto first [@property getter]: Returns the first attribute in the query.
firstOr auto firstOr [@property getter]: Returns the first attribute in the query, or a fallback if empty.
firstOrElse auto firstOrElse [@property getter]: Returns the first attribute in the query, or a fallback if empty.
firstOrThrow Throwable firstOrThrow [@property setter]: Returns the first attribute in the query, or throw if empty.
hasAllOf auto hasAllOf [@property getter]: Returns true if all of the given attributes are present.
hasAnyOf auto hasAnyOf [@property getter]: Returns true if any of the given attributes are present.
hasNoneOf auto hasNoneOf [@property getter]: Returns true if none of the given attributes are present.
noneOf auto noneOf [@property getter]: Property that returns a subset of the list of attributes which match none of the given types.
opCall auto opCall [@property getter]: Returns an uninitialized value of the query's type.
parent auto parent [@property getter]: Returns a query for the type that produced this attribute query.

Templates

ensure template ensure(string Attr : "length"): Provides query validation functions tied to length.

Meta

Source

See Implementation

dquery attributes structs

DQueryAttributes