Interface nsIKeyValueVariantCallbackType

A callback for the nsIKeyValueDatabase.has() and .get() methods.

The result is an nsIVariant, which is always a boolean for the has() method and can be any supported data type for the get() method.

Hierarchy

Methods

AddRef QueryInterface Release reject resolve

Methods

AddRef

  • Increases the reference count for this interface. The associated instance will not be deleted unless the reference count is returned to zero.

    Returns

    The resulting reference count.

    Returns number

QueryInterface

  • Parameters

    • aIID: object
    • Optional aInstancePtr: object

    Returns any

  • A run time mechanism for interface discovery.

    Returns

    NS_OK if the interface is supported by the associated instance, NS_NOINTERFACE if it is not.

    aInstancePtr must not be null.

    Parameters

    • aIID: object

      [in] A requested interface IID

    • aInstancePtr: object

      [out] A pointer to an interface pointer to receive the result.

    Returns void

Release

  • Decreases the reference count for this interface. Generally, if the reference count returns to zero, the associated instance is deleted.

    Returns

    The resulting reference count.

    Returns number

reject

  • Parameters

    • message: string

    Returns void

resolve

  • Parameters

    • result: nsIVariant

    Returns void

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