Struct xpcom::interfaces::mozIStorageFunction

#[repr(C)]
pub struct mozIStorageFunction { /* fields omitted */ }

interface mozIStorageFunction : nsISupports

/**
 * mozIStorageFunction is to be implemented by storage consumers that
 * wish to receive callbacks during the request execution.
 *
 * SQL can apply functions to values from tables. Examples of
 * such functions are MIN(a1,a2) or SQRT(num). Many functions are
 * implemented in SQL engine.
 *
 * This interface allows consumers to implement their own,
 * problem-specific functions.
 * These functions can be called from triggers, too.
 *
 */

Methods

impl mozIStorageFunction

pub fn coerce<T: mozIStorageFunctionCoerce>(&self) -> &T

Cast this mozIStorageFunction to one of its base interfaces.

impl mozIStorageFunction

pub unsafe fn OnFunctionCall(
    &self,
    aFunctionArguments: *const mozIStorageValueArray,
    _retval: *mut *const nsIVariant
) -> nsresult

/**
   * onFunctionCall is called when execution of a custom
   * function should occur.
   *
   * @param aNumArguments         The number of arguments
   * @param aFunctionArguments    The arguments passed in to the function
   *
   * @returns any value as Variant type.
   */

nsIVariant onFunctionCall (in mozIStorageValueArray aFunctionArguments);

Methods from Deref<Target = nsISupports>

pub fn coerce<T: nsISupportsCoerce>(&self) -> &T

Cast this nsISupports to one of its base interfaces.

pub unsafe fn QueryInterface(
    &self,
    uuid: &nsIID,
    result: *mut *mut c_void
) -> nsresult

void QueryInterface (in nsIIDRef uuid, [iid_is (uuid), retval] out nsQIResult result);

pub unsafe fn AddRef(&self) -> nsrefcnt

[noscript,notxpcom] nsrefcnt AddRef ();

pub unsafe fn Release(&self) -> nsrefcnt

[noscript,notxpcom] nsrefcnt Release ();

Trait Implementations

impl XpCom for mozIStorageFunction

const IID: nsIID

IID: nsIID = nsID(2683315301, 8651, 18931, [185, 117, 125, 91, 56, 206, 236, 115])

fn query_interface<T: XpCom>(&self) -> Option<RefPtr<T>>

Perform a QueryInterface call on this object, attempting to dynamically cast it to the requested interface type. Returns Some(RefPtr) if the cast succeeded, and None otherwise.

impl RefCounted for mozIStorageFunction

unsafe fn addref(&self)

Increment the reference count.

unsafe fn release(&self)

Decrement the reference count, potentially freeing backing memory.

impl Deref for mozIStorageFunction

type Target = nsISupports

The resulting type after dereferencing.

fn deref(&self) -> &nsISupports

Dereferences the value.