Struct file_metadata::mdquery::MDQuery

pub struct MDQuery(_);

Methods

impl MDQuery

pub fn new(
    query_string: CFString,
    value_list_attrs: Option<CFArray>,
    sorting_attrs: Option<CFArray>
) -> Option<Self>

pub fn execute(&self, flags: MDQueryOptionFlags) -> bool

pub fn stop(&self)

pub fn len(&self) -> CFIndex

pub fn get<'a>(&'a self, idx: CFIndex) -> Option<ItemRef<'a, MDItem>>

Important traits for MDQueryIterator<'a>

impl<'a> Iterator for MDQueryIterator<'a> type Item = ItemRef<'a, MDItem>;

pub fn iter<'a>(&'a self) -> MDQueryIterator<'a>

pub fn query_string(&self) -> CFString

Trait Implementations

impl Clone for MDQuery

fn clone(&self) -> MDQuery

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Drop for MDQuery

fn drop(&mut self)

Executes the destructor for this type.

impl PartialEq<MDQuery> for MDQuery

fn eq(&self, other: &MDQuery) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Eq for MDQuery

impl Debug for MDQuery

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl ConcreteCFType for MDQuery

impl TCFType for MDQuery

type Ref = MDQueryRef

The reference type wrapped inside this type.

fn as_concrete_TypeRef(&self) -> MDQueryRef

Returns the object as its concrete TypeRef.

unsafe fn wrap_under_get_rule(reference: MDQueryRef) -> Self

Returns an instance of the object, wrapping the underlying CFTypeRef subclass. Use this when following Core Foundation's "Get Rule". The reference count is bumped.

fn as_CFTypeRef(&self) -> CFTypeRef

Returns the object as a raw CFTypeRef. The reference count is not adjusted.

unsafe fn wrap_under_create_rule(reference: MDQueryRef) -> Self

Returns an instance of the object, wrapping the underlying CFTypeRef subclass. Use this when following Core Foundation's "Create Rule". The reference count is not bumped.

fn type_id() -> CFTypeID

Returns the type ID for this class.

fn as_CFType(&self) -> CFType

Returns the object as a wrapped CFType. The reference count is incremented by one.

fn into_CFType(self) -> CFType

Returns the object as a wrapped CFType. Consumes self and avoids changing the reference count.

fn retain_count(&self) -> i32

Returns the reference count of the object. It is unwise to do anything other than test whether the return value of this method is greater than zero.

fn type_of(&self) -> u32

Returns the type ID of this object.

fn show(&self)

Writes a debugging version of this object on standard error.

fn instance_of<OtherCFType>(&self) -> bool where
    OtherCFType: TCFType, 

Returns true if this value is an instance of another type.

impl<'a> ToVoid<MDQuery> for &'a MDQuery

fn to_void(&self) -> *const c_void

impl ToVoid<MDQuery> for MDQuery

fn to_void(&self) -> *const c_void

impl ToVoid<MDQuery> for MDQueryRef

fn to_void(&self) -> *const c_void