Public Member Functions | Public Attributes

nsIRDFResource Interface Reference

An nsIRDFResource is an object that has unique identity in the RDF data model. More...

import "nsIRDFResource.idl";

Inheritance diagram for nsIRDFResource:
Collaboration diagram for nsIRDFResource:

List of all members.

Public Member Functions

void GetValueConst ([shared] out string aConstValue)
 An unscriptable version used to avoid a string copy.
void Init (in string uri)
 This method is called by the nsIRDFService after constructing a resource object to initialize its URI.
boolean EqualsString (in string aURI)
 Determine if the resource has the given URI.
void GetDelegate (in string aKey, in nsIIDRef aIID,[iid_is(aIID), retval] out nsQIResult aResult)
 Retrieve the "delegate" object for this resource.
void ReleaseDelegate (in string aKey)
 Force a delegate to be "unbound" from the resource.

Public Attributes

readonly attribute string Value
 The single-byte string value of the resource.
readonly attribute AUTF8String ValueUTF8
 The UTF-8 URI of the resource.

Detailed Description

An nsIRDFResource is an object that has unique identity in the RDF data model.

The object's identity is determined by its URI.


Member Function Documentation

boolean nsIRDFResource::EqualsString ( in string  aURI  ) 

Determine if the resource has the given URI.

void nsIRDFResource::GetDelegate ( in string  aKey,
in nsIIDRef  aIID,
[iid_is(aIID), retval] out nsQIResult  aResult 
)

Retrieve the "delegate" object for this resource.

A resource may have several delegate objects, each of whose lifetimes is bound to the life of the resource object.

This method will return the delegate for the given key after QueryInterface()-ing it to the requested IID.

If no delegate exists for the specified key, this method will attempt to create one using the component manager. Specifically, it will combine aKey with the resource's URI scheme to produce a ContractID as follows:

component:/rdf/delegate-factory/[key]/[scheme]

This ContractID will be used to locate a factory using the FindFactory() method of nsIComponentManager. If the nsIFactory exists, it will be used to create a "delegate factory"; that is, an object that supports nsIRDFDelegateFactory. The delegate factory will be used to construct the delegate object.

void nsIRDFResource::GetValueConst ( [shared] out string  aConstValue  ) 

An unscriptable version used to avoid a string copy.

Meant for use as a performance optimization. The string is encoded in UTF-8.

void nsIRDFResource::Init ( in string  uri  ) 

This method is called by the nsIRDFService after constructing a resource object to initialize its URI.

You would not normally call this method directly

void nsIRDFResource::ReleaseDelegate ( in string  aKey  ) 

Force a delegate to be "unbound" from the resource.

Normally, a delegate object's lifetime will be identical to that of the resource to which it is bound; this method allows a delegate to unlink itself from an RDF resource prematurely.


Member Data Documentation

readonly attribute string nsIRDFResource::Value

The single-byte string value of the resource.

Note:
THIS IS OBSOLETE. C++ should use GetValueConst and script should use .valueUTF8
readonly attribute AUTF8String nsIRDFResource::ValueUTF8

The UTF-8 URI of the resource.


The documentation for this interface was generated from the following file: