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Added Query::Rewind() method - not yet tested.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10404 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-12-12 20:50:45 +00:00
parent 0ddccfdc7a
commit 467954408f
2 changed files with 34 additions and 13 deletions
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39
src/add-ons/kernel/file_systems/bfs/Query.cpp
View File

@ -1464,6 +1464,33 @@ Query::Query(Volume *volume, Expression *expression, uint32 flags)
fExpression->Root()->CalculateScore(fIndex);
fIndex.Unset();
Rewind();
if (fFlags & B_LIVE_QUERY)
volume->AddQuery(this);
}
Query::~Query()
{
if (fFlags & B_LIVE_QUERY)
fVolume->RemoveQuery(this);
}
status_t
Query::Rewind()
{
// free previous stuff
fStack.MakeEmpty();
delete fIterator;
fIterator = NULL;
fCurrent = NULL;
// put the whole expression on the stack
Stack<Term *> stack;
stack.Push(fExpression->Root());
@ -1486,19 +1513,11 @@ Query::Query(Volume *volume, Expression *expression, uint32 flags)
FATAL(("Unknown term on stack or stack error"));
}
if (fFlags & B_LIVE_QUERY)
volume->AddQuery(this);
return B_OK;
}
Query::~Query()
{
if (fFlags & B_LIVE_QUERY)
fVolume->RemoveQuery(this);
}
status_t
status_t
Query::GetNextEntry(struct dirent *dirent, size_t size)
{
// If we don't have an equation to use yet/anymore, get a new one

8
src/add-ons/kernel/file_systems/bfs/Query.h
View File

@ -50,10 +50,12 @@ class Query {
Query(Volume *volume, Expression *expression, uint32 flags);
~Query();
status_t GetNextEntry(struct dirent *,size_t size);
status_t Rewind();
status_t GetNextEntry(struct dirent *, size_t size);
void SetLiveMode(port_id port,int32 token);
void LiveUpdate(Inode *inode,const char *attribute,int32 type,const uint8 *oldKey,size_t oldLength,const uint8 *newKey,size_t newLength);
void SetLiveMode(port_id port, int32 token);
void LiveUpdate(Inode *inode, const char *attribute, int32 type,
const uint8 *oldKey, size_t oldLength, const uint8 *newKey, size_t newLength);
Expression *GetExpression() const { return fExpression; }