LCOV - code coverage report
Current view: directory - objdir/toolkit/library - nsRDFResource.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 104 30 28.8 %
Date: 2012-06-02 Functions: 14 10 71.4 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Pierre Phaneuf <pp@ludusdesign.com>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsRDFResource.h"
      40                 : #include "nsIServiceManager.h"
      41                 : #include "nsIRDFDelegateFactory.h"
      42                 : #include "nsIRDFService.h"
      43                 : #include "nsRDFCID.h"
      44                 : #include "prlog.h"
      45                 : #include "nsComponentManagerUtils.h"
      46                 : #include "nsServiceManagerUtils.h"
      47                 : 
      48                 : static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
      49                 : 
      50                 : nsIRDFService* nsRDFResource::gRDFService = nsnull;
      51                 : nsrefcnt nsRDFResource::gRDFServiceRefCnt = 0;
      52                 : 
      53                 : ////////////////////////////////////////////////////////////////////////////////
      54                 : 
      55           56424 : nsRDFResource::nsRDFResource(void)
      56           56424 :     : mDelegates(nsnull)
      57                 : {
      58           56424 : }
      59                 : 
      60          169263 : nsRDFResource::~nsRDFResource(void)
      61                 : {
      62                 :     // Release all of the delegate objects
      63          112842 :     while (mDelegates) {
      64               0 :         DelegateEntry* doomed = mDelegates;
      65               0 :         mDelegates = mDelegates->mNext;
      66               0 :         delete doomed;
      67                 :     }
      68                 : 
      69           56421 :     if (!gRDFService)
      70                 :         return;
      71                 : 
      72           56421 :     gRDFService->UnregisterResource(this);
      73                 : 
      74           56421 :     if (--gRDFServiceRefCnt == 0)
      75            1403 :         NS_RELEASE(gRDFService);
      76          225684 : }
      77                 : 
      78         2082402 : NS_IMPL_THREADSAFE_ISUPPORTS2(nsRDFResource, nsIRDFResource, nsIRDFNode)
      79                 : 
      80                 : ////////////////////////////////////////////////////////////////////////////////
      81                 : // nsIRDFNode methods:
      82                 : 
      83                 : NS_IMETHODIMP
      84               0 : nsRDFResource::EqualsNode(nsIRDFNode* aNode, bool* aResult)
      85                 : {
      86               0 :     NS_PRECONDITION(aNode != nsnull, "null ptr");
      87               0 :     if (! aNode)
      88               0 :         return NS_ERROR_NULL_POINTER;
      89                 : 
      90                 :     nsresult rv;
      91                 :     nsIRDFResource* resource;
      92               0 :     rv = aNode->QueryInterface(NS_GET_IID(nsIRDFResource), (void**)&resource);
      93               0 :     if (NS_SUCCEEDED(rv)) {
      94               0 :         *aResult = (static_cast<nsIRDFResource*>(this) == resource);
      95               0 :         NS_RELEASE(resource);
      96               0 :         return NS_OK;
      97                 :     }
      98               0 :     else if (rv == NS_NOINTERFACE) {
      99               0 :         *aResult = false;
     100               0 :         return NS_OK;
     101                 :     }
     102                 :     else {
     103               0 :         return rv;
     104                 :     }
     105                 : }
     106                 : 
     107                 : ////////////////////////////////////////////////////////////////////////////////
     108                 : // nsIRDFResource methods:
     109                 : 
     110                 : NS_IMETHODIMP
     111           56424 : nsRDFResource::Init(const char* aURI)
     112                 : {
     113           56424 :     NS_PRECONDITION(aURI != nsnull, "null ptr");
     114           56424 :     if (! aURI)
     115               0 :         return NS_ERROR_NULL_POINTER;
     116                 : 
     117           56424 :     mURI = aURI;
     118                 : 
     119           56424 :     if (gRDFServiceRefCnt++ == 0) {
     120            1404 :         nsresult rv = CallGetService(kRDFServiceCID, &gRDFService);
     121            1404 :         if (NS_FAILED(rv)) return rv;
     122                 :     }
     123                 : 
     124                 :     // don't replace an existing resource with the same URI automatically
     125           56424 :     return gRDFService->RegisterResource(this, true);
     126                 : }
     127                 : 
     128                 : NS_IMETHODIMP
     129               2 : nsRDFResource::GetValue(char* *aURI)
     130                 : {
     131               2 :     NS_ASSERTION(aURI, "Null out param.");
     132                 :     
     133               2 :     *aURI = ToNewCString(mURI);
     134                 : 
     135               2 :     if (!*aURI)
     136               0 :         return NS_ERROR_OUT_OF_MEMORY;
     137                 : 
     138               2 :     return NS_OK;
     139                 : }
     140                 : 
     141                 : NS_IMETHODIMP
     142            1244 : nsRDFResource::GetValueUTF8(nsACString& aResult)
     143                 : {
     144            1244 :     aResult = mURI;
     145            1244 :     return NS_OK;
     146                 : }
     147                 : 
     148                 : NS_IMETHODIMP
     149          114325 : nsRDFResource::GetValueConst(const char** aURI)
     150                 : {
     151          114325 :     *aURI = mURI.get();
     152          114325 :     return NS_OK;
     153                 : }
     154                 : 
     155                 : NS_IMETHODIMP
     156               0 : nsRDFResource::EqualsString(const char* aURI, bool* aResult)
     157                 : {
     158               0 :     NS_PRECONDITION(aURI != nsnull, "null ptr");
     159               0 :     if (! aURI)
     160               0 :         return NS_ERROR_NULL_POINTER;
     161                 : 
     162               0 :     NS_PRECONDITION(aResult, "null ptr");
     163                 : 
     164               0 :     *aResult = mURI.Equals(aURI);
     165               0 :     return NS_OK;
     166                 : }
     167                 : 
     168                 : NS_IMETHODIMP
     169               0 : nsRDFResource::GetDelegate(const char* aKey, REFNSIID aIID, void** aResult)
     170                 : {
     171               0 :     NS_PRECONDITION(aKey != nsnull, "null ptr");
     172               0 :     if (! aKey)
     173               0 :         return NS_ERROR_NULL_POINTER;
     174                 : 
     175                 :     nsresult rv;
     176               0 :     *aResult = nsnull;
     177                 : 
     178               0 :     DelegateEntry* entry = mDelegates;
     179               0 :     while (entry) {
     180               0 :         if (entry->mKey.Equals(aKey)) {
     181               0 :             rv = entry->mDelegate->QueryInterface(aIID, aResult);
     182               0 :             return rv;
     183                 :         }
     184                 : 
     185               0 :         entry = entry->mNext;
     186                 :     }
     187                 : 
     188                 :     // Construct a ContractID of the form "@mozilla.org/rdf/delegate/[key]/[scheme];1
     189               0 :     nsCAutoString contractID(NS_RDF_DELEGATEFACTORY_CONTRACTID_PREFIX);
     190               0 :     contractID.Append(aKey);
     191               0 :     contractID.Append("&scheme=");
     192                 : 
     193               0 :     PRInt32 i = mURI.FindChar(':');
     194               0 :     contractID += StringHead(mURI, i);
     195                 : 
     196                 :     nsCOMPtr<nsIRDFDelegateFactory> delegateFactory =
     197               0 :              do_CreateInstance(contractID.get(), &rv);
     198               0 :     if (NS_FAILED(rv)) return rv;
     199                 : 
     200               0 :     rv = delegateFactory->CreateDelegate(this, aKey, aIID, aResult);
     201               0 :     if (NS_FAILED(rv)) return rv;
     202                 : 
     203                 :     // Okay, we've successfully created a delegate. Let's remember it.
     204               0 :     entry = new DelegateEntry;
     205               0 :     if (! entry) {
     206               0 :         NS_RELEASE(*reinterpret_cast<nsISupports**>(aResult));
     207               0 :         return NS_ERROR_OUT_OF_MEMORY;
     208                 :     }
     209                 :     
     210               0 :     entry->mKey      = aKey;
     211               0 :     entry->mDelegate = do_QueryInterface(*reinterpret_cast<nsISupports**>(aResult), &rv);
     212               0 :     if (NS_FAILED(rv)) {
     213               0 :         NS_ERROR("nsRDFResource::GetDelegate(): can't QI to nsISupports!");
     214                 : 
     215               0 :         delete entry;
     216               0 :         NS_RELEASE(*reinterpret_cast<nsISupports**>(aResult));
     217               0 :         return NS_ERROR_FAILURE;
     218                 :     }
     219                 : 
     220               0 :     entry->mNext     = mDelegates;
     221                 : 
     222               0 :     mDelegates = entry;
     223                 : 
     224               0 :     return NS_OK;
     225                 : }
     226                 : 
     227                 : NS_IMETHODIMP
     228               0 : nsRDFResource::ReleaseDelegate(const char* aKey)
     229                 : {
     230               0 :     NS_PRECONDITION(aKey != nsnull, "null ptr");
     231               0 :     if (! aKey)
     232               0 :         return NS_ERROR_NULL_POINTER;
     233                 : 
     234               0 :     DelegateEntry* entry = mDelegates;
     235               0 :     DelegateEntry** link = &mDelegates;
     236                 : 
     237               0 :     while (entry) {
     238               0 :         if (entry->mKey.Equals(aKey)) {
     239               0 :             *link = entry->mNext;
     240               0 :             delete entry;
     241               0 :             return NS_OK;
     242                 :         }
     243                 : 
     244               0 :         link = &(entry->mNext);
     245               0 :         entry = entry->mNext;
     246                 :     }
     247                 : 
     248               0 :     NS_WARNING("nsRDFResource::ReleaseDelegate() no delegate found");
     249               0 :     return NS_OK;
     250                 : }
     251                 : 
     252                 : 
     253                 : 
     254                 : ////////////////////////////////////////////////////////////////////////////////

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