--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/store/UBTREE/UB_NODE.CPP Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,97 @@
+// Copyright (c) 1998-2009 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:
+//
+
+#include "UB_STD.H"
+
+EXPORT_C void MBtreeNodeOrg::Init(TAny* aNode) const
+//
+// Default node initialisation just zero filling.
+//
+ {
+ Mem::FillZ(aNode,KPoolPageSize);
+ }
+
+EXPORT_C TBool MBtreeLeafOrg::Search(const TAny* aNode,const TAny* aKey,const MBtreeKey& aComp,TBool aLast,TInt& aPos) const
+//
+// Default to using a binary search through the node, using KeyAt and the key's comparison.
+// if aLast is 1, aEntry is the first > the key, return true if previous entry is a match
+// if aLast is 0, aEntry is the first entry >= the key, return true is current entry is a match
+//
+ {
+ TInt match=EFalse;
+ TInt rr=LastEntry(aNode)-1;
+ TInt ll=0;
+ __ASSERT_DEBUG(rr>=-1,Panic(EBadEntryCount));
+ while (ll<=rr)
+ {
+ TInt mm=(rr+ll)>>1;
+ TInt res=aComp.Compare(aKey,aComp.Key(EntryPtr(aNode,mm)));
+ if (res==0)
+ match=ETrue;
+ if (res+aLast<=0)
+ rr=mm-1; // compare < 0 or match and aLast=0
+ else
+ ll=mm+1; // compare > 0 or match and aLast=1
+ }
+ aPos=ll;
+ return match;
+ }
+
+EXPORT_C TBool MBtreeLeafOrg::InsertOverflow(TAny*,TAny*,TInt,TBool,const TDesC8&) const
+//
+// For simple implementations allow this to be unimplemented. Report failure
+//
+ {
+ return EFalse;
+ }
+
+EXPORT_C TBool MBtreeIndexOrg::Search(const TAny* aNode,const TAny* aKey,const MBtreeKey& aComp,TBool aLast,TInt& aPos) const
+//
+// Default to using a binary search through the node, using KeyAt and the key's comparison.
+// if aLast is 1, aEntry is the first > the key
+// if aLast is 0, aEntry is the first entry >= the key
+//
+ {
+ TInt rr=LastEntry(aNode);
+ TInt ll=-1;
+ __ASSERT_DEBUG(rr>0,Panic(EBadEntryCount));
+ while (rr>ll+1)
+ {
+ TInt mm=(rr+ll)>>1;
+ if (aComp.Compare(aKey,EntryPtr(aNode,mm))+aLast<=0)
+ rr=mm; // compare < 0 or match and aLast=0
+ else
+ ll=mm; // compare > 0 or match and aLast=1
+ }
+ aPos=rr;
+ return EFalse; // return not used
+ }
+
+EXPORT_C TBool MBtreeIndexOrg::InsertOverflow(TAny*,TAny*,TInt,TBool,const TDesC8&,TPageRef,const TDesC8&,TBtreePivot&) const
+//
+// For simple implementations allow this to be unimplemented. Report failure.
+//
+ {
+ return EFalse;
+ }
+
+EXPORT_C TBool MBtreeIndexOrg::Update(TAny*,TInt,const TDesC8&) const
+//
+// Allow to be unimplemented. Return failure.
+//
+ {
+ return EFalse;
+ }
+