QSqlCachedResultPrivate Class Reference

Public Functions
int	cacheCount () const
bool	canSeek (int i) const
void	cleanup ()
void	init (int count, bool fo)
int	nextIndex ()
	QSqlCachedResultPrivate ()
void	revertLast ()

Public Variables
bool	atEnd
QSqlCachedResult::ValueCache	cache
int	colCount
bool	forwardOnly
int	rowCacheEnd

Detailed Description

Definition at line 64 of file qsqlcachedresult.cpp.

Constructors and Destructors

QSqlCachedResultPrivate()

QSqlCachedResultPrivate::QSqlCachedResultPrivate

(

)

Definition at line 82 of file qsqlcachedresult.cpp.

                                                :
    rowCacheEnd(0), colCount(0), forwardOnly(false), atEnd(false)
{
}

Functions

cacheCount()

int QSqlCachedResultPrivate::cacheCount ( ) const

inline

Definition at line 136 of file qsqlcachedresult.cpp.

Referenced by QSqlCachedResult::fetch(), and QSqlCachedResult::fetchLast().

{
    Q_ASSERT(!forwardOnly);
    Q_ASSERT(colCount);
    return rowCacheEnd / colCount;
}

canSeek()

bool QSqlCachedResultPrivate::canSeek

(

int

i

)

const

Definition at line 122 of file qsqlcachedresult.cpp.

Referenced by QSqlCachedResult::fetch(), QSqlCachedResult::fetchFirst(), and QSqlCachedResult::fetchNext().

{
    if (forwardOnly || i < 0)
        return false;
    return rowCacheEnd >= (i + 1) * colCount;
}

cleanup()

void QSqlCachedResultPrivate::cleanup

(

)

Definition at line 87 of file qsqlcachedresult.cpp.

Referenced by QSqlCachedResult::cleanup(), and init().

{
    cache.clear();
    forwardOnly = false;
    atEnd = false;
    colCount = 0;
    rowCacheEnd = 0;
}

init()

void QSqlCachedResultPrivate::init	(	int	count,
		bool	fo
	)

Definition at line 96 of file qsqlcachedresult.cpp.

Referenced by QSqlCachedResult::init().

{
    Q_ASSERT(count);
    cleanup();
    forwardOnly = fo;
    colCount = count;
    if (fo) {
        cache.resize(count);
        rowCacheEnd = count;
    } else {
        cache.resize(initial_cache_size * count);
    }
}

nextIndex()

int QSqlCachedResultPrivate::nextIndex

(

)

Definition at line 110 of file qsqlcachedresult.cpp.

Referenced by QSqlCachedResult::cacheNext().

{
    if (forwardOnly)
        return 0;
    int newIdx = rowCacheEnd;
    if (newIdx + colCount > cache.size())
        cache.resize(qMin(cache.size() * 2, cache.size() + 10000));
    rowCacheEnd += colCount;

    return newIdx;
}

revertLast()

void QSqlCachedResultPrivate::revertLast

(

)

Definition at line 129 of file qsqlcachedresult.cpp.

Referenced by QSqlCachedResult::cacheNext().

{
    if (forwardOnly)
        return;
    rowCacheEnd -= colCount;
}

Properties

atEnd

bool QSqlCachedResultPrivate::atEnd

Definition at line 79 of file qsqlcachedresult.cpp.

Referenced by QSqlCachedResult::cacheNext(), cleanup(), QSqlCachedResult::clearValues(), and QSqlCachedResult::fetchLast().

cache

QSqlCachedResult::ValueCache QSqlCachedResultPrivate::cache

Definition at line 75 of file qsqlcachedresult.cpp.

Referenced by QSqlCachedResult::cache(), QSqlCachedResult::cacheNext(), cleanup(), QSqlCachedResult::data(), QSqlCachedResult::fetch(), init(), QSqlCachedResult::isNull(), and nextIndex().

colCount

int QSqlCachedResultPrivate::colCount

Definition at line 77 of file qsqlcachedresult.cpp.

Referenced by cacheCount(), QSqlCachedResult::cacheNext(), canSeek(), cleanup(), QSqlCachedResult::colCount(), QSqlCachedResult::data(), init(), QSqlCachedResult::isNull(), nextIndex(), and revertLast().

forwardOnly

bool QSqlCachedResultPrivate::forwardOnly

Definition at line 78 of file qsqlcachedresult.cpp.

Referenced by cacheCount(), canSeek(), cleanup(), QSqlCachedResult::data(), QSqlCachedResult::fetch(), QSqlCachedResult::fetchFirst(), QSqlCachedResult::fetchLast(), init(), QSqlCachedResult::isNull(), nextIndex(), and revertLast().

rowCacheEnd

int QSqlCachedResultPrivate::rowCacheEnd

Definition at line 76 of file qsqlcachedresult.cpp.

Referenced by cacheCount(), canSeek(), cleanup(), QSqlCachedResult::clearValues(), QSqlCachedResult::data(), QSqlCachedResult::fetch(), init(), QSqlCachedResult::isNull(), nextIndex(), and revertLast().

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The documentation for this class was generated from the following file:

• /src/sql/kernel/qsqlcachedresult.cpp