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refs #494 Ability to "delete" all values in cache.

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This commit is contained in:
Mathew Sutcliffe
2015-10-22 01:16:11 +01:00
parent 966eed9044
commit 8a3cb5f661
2 changed files with 13 additions and 1 deletions
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10
src/blackmisc/valuecache.cpp
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@@ -278,6 +278,14 @@ namespace BlackMisc
return {};
}
void CValueCache::clearAllValues(const QString &keyPrefix)
{
QMutexLocker lock(&m_mutex);
auto values = getAllValues(keyPrefix);
for (auto it = values.begin(); it != values.end(); ++it) { it.value() = CVariant(); }
changeValues({ values, QDateTime::currentMSecsSinceEpoch() });
}
CValueCache::BatchGuard CValueCache::batchChanges(QObject *owner)
{
Q_ASSERT(QThread::currentThread() == owner->thread());
@@ -464,7 +472,7 @@ namespace BlackMisc
{
if (! value.isValid())
{
return CStatusMessage(this, CStatusMessage::SeverityWarning, "Uninitialized value for " + element.m_key);
return CStatusMessage(this, CStatusMessage::SeverityDebug, "Uninitialized value for " + element.m_key);
}
else if (value.userType() != element.m_metaType)
{

4
src/blackmisc/valuecache.h
View File

@@ -121,6 +121,10 @@ namespace BlackMisc
//! \threadsafe
CStatusMessage loadFromFiles(const QString &directory);
//! Clear all values from the cache.
//! \threadsafe
void clearAllValues(const QString &keyPrefix = {});
//! Begins a batch of changes to be made through CCached instances owned by owner.
//! \details All changes made through those CCached instances will be deferred until the returned RAII object is
//! destroyed. If the destruction happens during stack unwinding due to an exception being thrown, the changes are