--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/remotestoragefw/remotefileengine/src/rsfwlookupstatemachine.cpp Wed Sep 01 12:15:08 2010 +0100
@@ -0,0 +1,330 @@
+/*
+* Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: State machine for file lookup
+*
+*/
+
+
+#include "rsfwlookupstatemachine.h"
+#include "rsfwfileentry.h"
+#include "rsfwfiletable.h"
+#include "rsfwinterface.h"
+#include "rsfwfileengine.h"
+#include "mdebug.h"
+#include "rsfwdirentattr.h"
+#include "rsfwvolumetable.h"
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::CRsfwLookupStateMachine
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::CRsfwLookupStateMachine()
+ {
+ iKidCreated = ETrue;
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::~CRsfwLookupStateMachine
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::~CRsfwLookupStateMachine()
+ {
+ delete iDirEntAttr;
+ if (iPath)
+ {
+ delete iPath;
+ }
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::CompleteRequestL
+// ----------------------------------------------------------------------------
+//
+CRsfwRfeStateMachine::TState* CRsfwLookupStateMachine::CompleteRequestL(TInt aError)
+ {
+ TRfeLookupOutArgs* outArgs = static_cast<TRfeLookupOutArgs*>(iOutArgs);
+ if (aError == KUpdateNotRequired)
+ { // discard
+ aError = KErrNone;
+ }
+
+ if (!aError)
+ {
+ outArgs->iFid = iKidFep->Fid();
+ }
+ CompleteAndDestroyState()->SetErrorCode(aError);
+ return CompleteAndDestroyState();
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::CompleteL
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::TState* CRsfwLookupStateMachine::CompleteL()
+ {
+ // from CRsfwFileEngine::UpdateFileAttributes/UpdateDirAttributes
+#ifdef _DEBUG
+ if (iDirEntAttr)
+ {
+ DEBUGSTRING(("Kid attributes: attr=0x%x, size=%d, time=",
+ iDirEntAttr->Att(),
+ iDirEntAttr->Size()));
+ DEBUGTIME((iDirEntAttr->Modified()));
+ }
+#endif
+
+ if (iKidCreated)
+ {
+ /* from CRsfwFileEngine::DoLookupL */
+ // Create a file entry for this kid
+ if (!Volumes()->EnsureMetadataCanBeAddedL(Node()))
+ {
+ User::Leave(KErrNoMemory);
+ }
+ iKidFep = CRsfwFileEntry::NewL(iKidName, Node());
+ if (iDirEntAttr->Att() & KEntryAttDir)
+ {
+ iKidFep->SetType(KNodeTypeDir);
+ }
+ else
+ {
+ iKidFep->SetType(KNodeTypeFile);
+ }
+
+ iKidFep->SetAttributesL(*iDirEntAttr, ETrue);
+
+ // Remember that we have this kid
+ FileEngine()->iFileTable->AddL(iKidFep);
+ Node()->AddKid(*iKidFep);
+ // If we really find a new kid that we were not aware of
+ // we must set the parent as locally dirty
+ // (this should not happen too often)
+ Node()->SetLocallyDirty();
+ }
+
+ // We now have a valid kid entry
+ return CompleteRequestL(KErrNone);
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::TUpdateKidAttributesTryFirstTypeState
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::
+TUpdateKidAttributesTryFirstTypeState::
+TUpdateKidAttributesTryFirstTypeState(CRsfwLookupStateMachine* aParent)
+ : iOperation(aParent)
+ {
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::EnterL
+// ----------------------------------------------------------------------------
+//
+void CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::EnterL()
+ {
+ DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::EnterL"));
+ TRfeLookupInArgs* inArgs =
+ static_cast<TRfeLookupInArgs*>(iOperation->iInArgs);
+ TRfeLookupOutArgs* outArgs =
+ static_cast<TRfeLookupOutArgs*>(iOperation->iOutArgs);
+ iOperation->iNodeType = inArgs->iNodeType;
+ iOperation->iKidName.Set(inArgs->iName);
+
+ TInt err = KErrNone;
+ iOperation->iKidFep = NULL;
+
+ if (!iOperation->Node())
+ {
+ User::Leave(KErrNotFound);
+ }
+
+ DEBUGSTRING16(("looking up '%S' in fid=%d",
+ &(iOperation->iKidName),
+ iOperation->Node()->Fid().iNodeId));
+
+ // We'd better be looking up in a directory
+ if (iOperation->Node()->Type() != KNodeTypeDir)
+ {
+ User::Leave(KErrNotFound);
+ }
+
+ // Try to get the entry from the parent directory
+ iOperation->iKidFep =
+ iOperation->Node()->FindKidByName(iOperation->iKidName);
+ if (!iOperation->iKidFep)
+ {
+ DEBUGSTRING(("no such kid!"));
+ // Didn't find it
+ // if the parent directory's cache entry is still valid
+ // we return "not found"
+ if ((iOperation->FileEngine()->UseCachedAttributes(*iOperation->Node())) &&
+ (iOperation->FileEngine()->UseCachedData(*iOperation->Node())))
+ {
+ User::Leave(KErrNotFound);
+ }
+
+ iOperation->iPath =
+ iOperation->FileEngine()->FullNameL(*iOperation->Node());
+ if (iOperation->iNodeType == KNodeTypeUnknown)
+ {
+ iOperation->FileEngine()->
+ UpdateAttributesL(*iOperation->iPath,
+ iOperation->iKidName,
+ iOperation->iDirEntAttr,
+ KNodeTypeFile,
+ iOperation);
+ }
+ else
+ {
+ iOperation->FileEngine()->
+ UpdateAttributesL(*iOperation->iPath,
+ iOperation->iKidName,
+ iOperation->iDirEntAttr,
+ iOperation->iNodeType,
+ iOperation);
+ }
+
+ if (err)
+ {
+ // communication to the server failed,
+ //e.g. we are in disconnected mode
+ User::Leave(err);
+ }
+ }
+ else
+ {
+ // We now have a valid kid entry
+ outArgs->iFid = iOperation->iKidFep->Fid();
+ iOperation->HandleRemoteAccessResponse(0, KUpdateNotRequired);
+ }
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::CompleteL
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::TState*
+CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::CompleteL()
+ {
+ DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::CompleteL"));
+ return iOperation->CompleteL();
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::ErrorL
+// If we were looking for a file return KErrNotFound
+// if for directory KErrPathNotFound.
+// File Server seems to always call Entry() (-->lookup()) before other file
+// operations so as long as we return the right variant of "not found"
+// error here other places do not matter.
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::TState*
+CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::ErrorL(TInt aCode)
+ {
+ DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::ErrorL %d", aCode));
+ if (aCode == KUpdateNotRequired)
+ {
+ iOperation->iKidCreated = EFalse;
+ return iOperation->CompleteL();
+ }
+ else if (iOperation->iNodeType == KNodeTypeUnknown)
+ {
+ return new CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState(
+ iOperation);
+ }
+ else if ((aCode != KErrNotFound) && (aCode != KErrPathNotFound))
+ {
+ return iOperation->CompleteRequestL(aCode);
+ }
+ else if (iOperation->iNodeType == KNodeTypeDir)
+ {
+ return iOperation->CompleteRequestL(KErrPathNotFound);
+ }
+ else
+ {
+ return iOperation->CompleteRequestL(KErrNotFound);
+ }
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::TUpdateKidAttributesTrySecondTypeState
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::
+TUpdateKidAttributesTrySecondTypeState::
+TUpdateKidAttributesTrySecondTypeState(CRsfwLookupStateMachine* aParent)
+ : iOperation(aParent)
+ {
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::EnterL
+// ----------------------------------------------------------------------------
+//
+void CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::EnterL()
+ {
+ DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::EnterL"));
+ // We only come here if nodetype is unknown and
+ // we already tried to lookup as a file
+ iOperation->FileEngine()->UpdateAttributesL(*iOperation->iPath,
+ iOperation->iKidName,
+ iOperation->iDirEntAttr,
+ KNodeTypeDir, iOperation);
+ }
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::CompleteL
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::TState*
+CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::CompleteL()
+ {
+ DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::CompleteL"));
+ // from CRsfwFileEngine::UpdateFileAttributes/UpdateDirAttributes
+ return iOperation->CompleteL();
+ }
+
+
+// ----------------------------------------------------------------------------
+// CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::ErrorL
+// If we were looking for a file return KErrNotFound,
+// if for directory KErrPathNotFound.
+// File Server seems to always call Entry() (-->lookup()) before other file
+// operations so as long as we return the right variant of "not found"
+// error here other places do not matter.
+// ----------------------------------------------------------------------------
+//
+CRsfwLookupStateMachine::TState*
+CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::ErrorL(TInt aCode)
+ {
+ DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::ErrorL %d", aCode));
+ // from CRsfwFileEngine::Lookup()
+ // No such kid
+
+ // cache the last failed lookup results
+ iOperation->FileEngine()->SetFailedLookup(*iOperation->iPath,
+ iOperation->iKidName);
+
+ if (iOperation->iNodeType == KNodeTypeDir)
+ {
+ return iOperation->CompleteRequestL(KErrPathNotFound);
+ }
+ else
+ {
+ return iOperation->CompleteRequestL(KErrNotFound);
+ }
+ }
+