configmgr/source/treecache/invalidatetree.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_configmgr.hxx"
  33
  34
  35 #include "cachecontroller.hxx"
  36 #include "change.hxx"
  37 #include "valuenode.hxx"
  38 #include "updatehelper.hxx"
  39 #include "treeactions.hxx"
  40 #include "tracer.hxx"
  41 #include <com/sun/star/uno/Any.hxx>
  42 #include <com/sun/star/container/NoSuchElementException.hpp>
  43
  44 #ifndef INCLUDED_ALGORITHM
  45 #include <algorithm>
  46 #define INCLUDED_ALGORITHM
  47 #endif
  48
  49 namespace configmgr
  50 {
  51
  52     namespace container = com::sun::star::container;
  53 // -----------------------------------------------------------------------------
  54 // ------------------------------- invalidateTree -------------------------------
  55 // -----------------------------------------------------------------------------
  56
  57 namespace backend
  58 {
  59 // -----------------------------------------------------------------------------
  60 std::auto_ptr<SubtreeChange> createDiffs(sharable::Node * cachedNode,
  61                                             ISubtree const * _pLoadedSubtree,
  62                                             configuration::AbsolutePath const& _aAbsoluteSubtreePath)
  63 {
  64     OSL_PRECOND(cachedNode != 0, "Need an existing node to create a diff");
  65     OSL_PRECOND(_pLoadedSubtree != 0, "Need a result node to create a diff");
  66     // Create a TreeChangeList with the right name, parentname and ConfigurationProperties
  67     std::auto_ptr<SubtreeChange> aNewChange(new SubtreeChange(_aAbsoluteSubtreePath.getLocalName().getName(),
  68                                                                 node::Attributes()) );
  69
  70     if (!createUpdateFromDifference(*aNewChange, cachedNode, *_pLoadedSubtree))
  71         aNewChange.reset();
  72
  73     return aNewChange;
  74 }
  75 // -----------------------------------------------------------------------------
  76 #if 0
  77 std::auto_ptr<ISubtree> TreeManager::loadNodeFromSession( configuration::AbsolutePath const& _aAbsoluteSubtreePath,
  78                                                      const vos::ORef < OOptions >& _xOptions,
  79                                                      sal_Int16 _nMinLevels)  SAL_THROW((com::sun::star::uno::Exception))
  80 {
  81     TreeInfo* pInfo = this->requestTreeInfo(_xOptions,true /*create TreeInfo*/);
  82
  83     CFG_TRACE_INFO_NI("cache manager: cache miss. going to load the node");
  84     rtl::Reference< OTreeLoader > xLoader = pInfo->getNewLoaderWithoutPending(_aAbsoluteSubtreePath, _nMinLevels, _xOptions, m_xBackend.get());
  85
  86     OSL_ENSURE(xLoader.is(), "Did not receive a loader for retrieving the node");
  87     CFG_TRACE_INFO_NI("cache manager: cache miss. going to load the node");
  88     if (!xLoader.is())
  89         throw container::NoSuchElementException((::rtl::OUString::createFromAscii("Error while retrieving the node")), NULL);
  90
  91     // now block for reading
  92     std::auto_ptr<ISubtree> pResponse;
  93     try
  94     {
  95         pResponse = xLoader->waitToResponse();
  96     }
  97     catch (uno::Exception& e)
  98     {
  99         pInfo->releaseLoader(xLoader);
 100         throw;
 101     }
 102
 103     pInfo->releaseLoader(xLoader);
 104
 105     return pResponse;
 106 }
 107 #endif
 108 // -----------------------------------------------------------------------------
 109
 110 sharable::TreeFragment * CacheController::refreshComponent(ComponentRequest const & _aRequest) SAL_THROW((com::sun::star::uno::Exception))
 111 {
 112     if (m_bDisposing) return NULL;
 113
 114     rtl::Reference<CacheLoadingAccess> aCache = this->getCacheAlways(_aRequest.getOptions());
 115
 116     if (!aCache.is()) return NULL;
 117
 118     // load the Node direct from the session, without using the cache
 119     ComponentRequest aForcedRequest(_aRequest);
 120     aForcedRequest.forceReload();
 121
 122     ResultHolder< ComponentInstance > aLoadedInstance = this->getComponentData(aForcedRequest,false);
 123     configuration::AbsolutePath aRequestPath = configuration::AbsolutePath::makeModulePath(_aRequest.getComponentName());
 124     NodeInstance aNodeInstance(aLoadedInstance.mutableInstance().mutableData(),aRequestPath) ;
 125     ResultHolder< NodeInstance > aLoadedNodeInstance(aNodeInstance) ;
 126
 127     sharable::TreeFragment * aResult = NULL;
 128     if (aLoadedNodeInstance.is())
 129     {
 130         rtl::OUString aModuleName = aLoadedNodeInstance->root().getModuleName();
 131
 132         bool bAcquired = aCache->acquireModule(aModuleName);
 133         aResult = (sharable::TreeFragment *)( aCache->getTreeAddress(aModuleName) );
 134
 135         if (bAcquired)
 136         try
 137     {
 138             std::auto_ptr<SubtreeChange> aTreeChanges;
 139             sharable::Node * aRootAddress;
 140
 141             {
 142                 sharable::Node * rootNode = aResult == 0 ? 0 : aResult->getRootNode();
 143
 144                 aTreeChanges = createDiffs(rootNode, aLoadedNodeInstance->data().get(), aLoadedNodeInstance->root());
 145                 aRootAddress = rootNode;
 146             }
 147
 148             if (aTreeChanges.get() != NULL)
 149             {
 150         // change all Values... found in the Subtree in the CacheTree
 151         applyUpdateWithAdjustmentToTree(*aTreeChanges, aRootAddress);
 152
 153                 UpdateRequest anUpdateReq(  aTreeChanges.get(),
 154                                             aLoadedNodeInstance->root(),
 155                                             _aRequest.getOptions()
 156                                           );
 157
 158                 m_aNotifier.notifyChanged(anUpdateReq);
 159             }
 160         aCache->releaseModule(aModuleName);
 161         }
 162         catch (...)
 163         {
 164         aCache->releaseModule(aModuleName);
 165             throw;
 166         }
 167     }
 168     return aResult;
 169 }
 170
 171 // -----------------------------------------------------------------------------
 172     } // namespace backend
 173
 174 // -----------------------------------------------------------------------------
 175 } // namespace configmgr
 176