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authorzecke <zecke>2002-10-19 00:08:35 (UTC)
committer zecke <zecke>2002-10-19 00:08:35 (UTC)
commit549472ef07703ef27dc5f58a37e8f16c714fb2a1 (patch) (side-by-side diff)
tree9742f2545ef3504e61a07cef2996aa29b9db5b90 /libopie2
parent598cfa66b57d61e15bc3c5ea3a9c8e7295864455 (diff)
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Add void setReadAhead(uint) to the templates
OTodoAccessSQL use the read ahead value
Diffstat (limited to 'libopie2') (more/less context) (ignore whitespace changes)
-rw-r--r--libopie2/opiepim/backend/opimaccessbackend.h16
-rw-r--r--libopie2/opiepim/backend/otodoaccesssql.cpp2
-rw-r--r--libopie2/opiepim/core/opimaccesstemplate.h7
3 files changed, 22 insertions, 3 deletions
diff --git a/libopie2/opiepim/backend/opimaccessbackend.h b/libopie2/opiepim/backend/opimaccessbackend.h
index 27d3cb8..0bd2723 100644
--- a/libopie2/opiepim/backend/opimaccessbackend.h
+++ b/libopie2/opiepim/backend/opimaccessbackend.h
@@ -62,66 +62,80 @@ public:
* clear the back end
*/
virtual void clear() = 0;
/**
* add T
*/
virtual bool add( const T& t ) = 0;
/**
* remove
*/
virtual bool remove( int uid ) = 0;
/**
* replace a record with T.uid()
*/
virtual bool replace( const T& t ) = 0;
/*
* setTheFrontEnd!!!
*/
void setFrontend( Frontend* front );
+ /**
+ * set the read ahead count
+ */
+ void setReadAhead( uint count );
protected:
void cache( const T& t )const;
/**
* use a prime number here!
*/
void setSaneCacheSize( int );
+ uint readAhead()const;
+
private:
Frontend* m_front;
+ uint m_read;
};
template <class T>
OPimAccessBackend<T>::OPimAccessBackend() {
m_front = 0l;
}
template <class T>
OPimAccessBackend<T>::~OPimAccessBackend() {
}
template <class T>
void OPimAccessBackend<T>::setFrontend( Frontend* fr ) {
m_front = fr;
}
template <class T>
void OPimAccessBackend<T>::cache( const T& t )const {
if (m_front )
m_front->cache( t );
}
template <class T>
void OPimAccessBackend<T>::setSaneCacheSize( int size) {
if (m_front )
m_front->setSaneCacheSize( size );
}
template <class T>
T OPimAccessBackend<T>::find( int uid, const QArray<int>&,
uint, Frontend::CacheDirection )const {
return find( uid );
}
-
+template <class T>
+void OPimAccessBackend<T>::setReadAhead( uint count ) {
+ m_read = count;
+}
+template <class T>
+uint OPimAccessBackend<T>::readAhead()const {
+ return m_read;
+}
#endif
diff --git a/libopie2/opiepim/backend/otodoaccesssql.cpp b/libopie2/opiepim/backend/otodoaccesssql.cpp
index 9ef6b7c..8c2ea3a 100644
--- a/libopie2/opiepim/backend/otodoaccesssql.cpp
+++ b/libopie2/opiepim/backend/otodoaccesssql.cpp
@@ -265,51 +265,51 @@ bool OTodoAccessBackendSQL::load(){
return true;
}
bool OTodoAccessBackendSQL::reload(){
return load();
}
bool OTodoAccessBackendSQL::save(){
return m_driver->close();
}
QArray<int> OTodoAccessBackendSQL::allRecords()const {
if (m_dirty )
update();
return m_uids;
}
QArray<int> OTodoAccessBackendSQL::queryByExample( const OTodo& , int ){
QArray<int> ints(0);
return ints;
}
OTodo OTodoAccessBackendSQL::find(int uid ) const{
FindQuery query( uid );
return todo( m_driver->query(&query) );
}
-#define CACHE 32
OTodo OTodoAccessBackendSQL::find( int uid, const QArray<int>& ints,
uint cur, Frontend::CacheDirection dir ) const{
+ int CACHE = readAhead();
qWarning("searching for %d", uid );
QArray<int> search( CACHE );
uint size =0;
OTodo to;
// we try to cache CACHE items
switch( dir ) {
/* forward */
case 0:
for (uint i = cur; i < ints.count() && size < CACHE; i++ ) {
qWarning("size %d %d", size, ints[i] );
search[size] = ints[i];
size++;
}
break;
/* reverse */
case 1:
for (uint i = cur; i != 0 && size < CACHE; i-- ) {
search[size] = ints[i];
size++;
}
break;
}
search.resize( size );
diff --git a/libopie2/opiepim/core/opimaccesstemplate.h b/libopie2/opiepim/core/opimaccesstemplate.h
index 50cb1e4..c5523a8 100644
--- a/libopie2/opiepim/core/opimaccesstemplate.h
+++ b/libopie2/opiepim/core/opimaccesstemplate.h
@@ -44,49 +44,49 @@ public:
* rejoin the local changes. Therefore the local database will be set consistent.
*/
virtual bool reload();
/** Save contacts database.
* Save is more a "commit". After calling this function, all changes are public available.
* @return true if successful
*/
virtual bool save();
/**
* if the resource was changed externally
* You should use the signal handling instead of polling possible changes !
* zecke: Do you implement a signal for otodoaccess ?
*/
bool wasChangedExternally()const;
/**
* return a List of records
* you can iterate over them
*/
virtual List allRecords()const;
/**
- * queryByExample.
+ * queryByExample.
* @see otodoaccess, ocontactaccess
*/
virtual List queryByExample( const T& t, int querySettings );
/**
* find the OPimRecord uid
*/
virtual T find( int uid )const;
/**
* read ahead cache find method ;)
*/
virtual T find( int uid, const QArray<int>&,
uint current, CacheDirection dir = Forward )const;
/* invalidate cache here */
/**
* clears the backend and invalidates the backend
*/
virtual void clear() ;
/**
* add T to the backend
* @param t The item to add.
@@ -95,48 +95,49 @@ public:
virtual bool add( const T& t ) ;
/* only the uid matters */
/**
* remove T from the backend
* @param t The item to remove
* @return <i>true</i> if successful.
*/
virtual bool remove( const T& t );
/**
* remove the OPimRecord with uid
* @param uid The ID of the item to remove
* @return <i>true</i> if successful.
*/
virtual bool remove( int uid );
/**
* replace T from backend
* @param t The item to replace
* @return <i>true</i> if successful.
*/
virtual bool replace( const T& t) ;
+ void setReadAhead( uint count );
/**
* @internal
*/
void cache( const T& )const;
void setSaneCacheSize( int );
protected:
/**
* invalidate the cache
*/
void invalidateCache();
void setBackEnd( BackEnd* end );
/**
* returns the backend
*/
BackEnd* backEnd();
BackEnd* m_backEnd;
Cache m_cache;
};
template <class T>
OPimAccessTemplate<T>::OPimAccessTemplate( BackEnd* end )
: OTemplateBase<T>(), m_backEnd( end )
@@ -230,25 +231,29 @@ void OPimAccessTemplate<T>::invalidateCache() {
}
template <class T>
OPimAccessTemplate<T>::BackEnd* OPimAccessTemplate<T>::backEnd() {
return m_backEnd;
}
template <class T>
bool OPimAccessTemplate<T>::wasChangedExternally()const {
return false;
}
template <class T>
void OPimAccessTemplate<T>::setBackEnd( BackEnd* end ) {
m_backEnd = end;
if (m_backEnd )
m_backEnd->setFrontend( this );
}
template <class T>
void OPimAccessTemplate<T>::cache( const T& t ) const{
/* hacky we need to work around the const*/
((OPimAccessTemplate<T>*)this)->m_cache.add( t );
}
template <class T>
void OPimAccessTemplate<T>::setSaneCacheSize( int size ) {
m_cache.setSize( size );
}
+template <class T>
+void OPimAccessTemplate<T>::setReadAhead( uint count ) {
+ m_backEnd->setReadAhead( count );
+}
#endif