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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
commitd796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch)
tree6e3dcca4f77e20ec8966c666aac7c35bd4704053 /src/sql/drivers/cache
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
Diffstat (limited to 'src/sql/drivers/cache')
-rw-r--r--src/sql/drivers/cache/qsqlcachedresult.cpp259
-rw-r--r--src/sql/drivers/cache/qsqlcachedresult.h104
2 files changed, 363 insertions, 0 deletions
diff --git a/src/sql/drivers/cache/qsqlcachedresult.cpp b/src/sql/drivers/cache/qsqlcachedresult.cpp
new file mode 100644
index 000000000..5e46b9b49
--- /dev/null
+++ b/src/sql/drivers/cache/qsqlcachedresult.cpp
@@ -0,0 +1,259 @@
+/****************************************************************************
+**
+** Implementation of cached TQt SQL result classes
+**
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the sql module of the TQt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free TQt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing retquirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
+** included in the packaging of this file. Licensees holding valid TQt
+** Commercial licenses may use this file in accordance with the TQt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "qsqlcachedresult.h"
+#include <qdatetime.h>
+
+#ifndef QT_NO_SQL
+static const uint initial_cache_size = 128;
+
+class TQtSqlCachedResultPrivate
+{
+public:
+ TQtSqlCachedResultPrivate();
+ bool seek(int i);
+ void init(int count, bool fo);
+ void cleanup();
+ TQtSqlCachedResult::RowCache* next();
+ void revertLast();
+
+ TQtSqlCachedResult::RowsetCache *cache;
+ TQtSqlCachedResult::RowCache *current;
+ int rowCacheEnd;
+ int colCount;
+ bool forwardOnly;
+};
+
+TQtSqlCachedResultPrivate::TQtSqlCachedResultPrivate():
+ cache(0), current(0), rowCacheEnd(0), colCount(0), forwardOnly(FALSE)
+{
+}
+
+void TQtSqlCachedResultPrivate::cleanup()
+{
+ if (cache) {
+ for (int i = 0; i < rowCacheEnd; ++i)
+ delete (*cache)[i];
+ delete cache;
+ cache = 0;
+ }
+ if (forwardOnly)
+ delete current;
+ current = 0;
+ forwardOnly = FALSE;
+ colCount = 0;
+ rowCacheEnd = 0;
+}
+
+void TQtSqlCachedResultPrivate::init(int count, bool fo)
+{
+ cleanup();
+ forwardOnly = fo;
+ colCount = count;
+ if (fo)
+ current = new TQtSqlCachedResult::RowCache(count);
+ else
+ cache = new TQtSqlCachedResult::RowsetCache(initial_cache_size);
+}
+
+TQtSqlCachedResult::RowCache *TQtSqlCachedResultPrivate::next()
+{
+ if (forwardOnly)
+ return current;
+
+ Q_ASSERT(cache);
+ current = new TQtSqlCachedResult::RowCache(colCount);
+ if (rowCacheEnd == (int)cache->size())
+ cache->resize(cache->size() * 2);
+ cache->insert(rowCacheEnd++, current);
+ return current;
+}
+
+bool TQtSqlCachedResultPrivate::seek(int i)
+{
+ if (forwardOnly || i < 0)
+ return FALSE;
+ if (i >= rowCacheEnd)
+ return FALSE;
+ current = (*cache)[i];
+ return TRUE;
+}
+
+void TQtSqlCachedResultPrivate::revertLast()
+{
+ if (forwardOnly)
+ return;
+ --rowCacheEnd;
+ delete current;
+ current = 0;
+}
+
+//////////////
+
+TQtSqlCachedResult::TQtSqlCachedResult(const TQSqlDriver * db ): TQSqlResult ( db )
+{
+ d = new TQtSqlCachedResultPrivate();
+}
+
+TQtSqlCachedResult::~TQtSqlCachedResult()
+{
+ delete d;
+}
+
+void TQtSqlCachedResult::init(int colCount)
+{
+ d->init(colCount, isForwardOnly());
+}
+
+bool TQtSqlCachedResult::fetch(int i)
+{
+ if ((!isActive()) || (i < 0))
+ return FALSE;
+ if (at() == i)
+ return TRUE;
+ if (d->forwardOnly) {
+ // speed hack - do not copy values if not needed
+ if (at() > i || at() == TQSql::AfterLast)
+ return FALSE;
+ while(at() < i - 1) {
+ if (!gotoNext(0))
+ return FALSE;
+ setAt(at() + 1);
+ }
+ if (!gotoNext(d->current))
+ return FALSE;
+ setAt(at() + 1);
+ return TRUE;
+ }
+ if (d->seek(i)) {
+ setAt(i);
+ return TRUE;
+ }
+ setAt(d->rowCacheEnd - 1);
+ while (at() < i) {
+ if (!cacheNext())
+ return FALSE;
+ }
+ return TRUE;
+}
+
+bool TQtSqlCachedResult::fetchNext()
+{
+ if (d->seek(at() + 1)) {
+ setAt(at() + 1);
+ return TRUE;
+ }
+ return cacheNext();
+}
+
+bool TQtSqlCachedResult::fetchPrev()
+{
+ return fetch(at() - 1);
+}
+
+bool TQtSqlCachedResult::fetchFirst()
+{
+ if (d->forwardOnly && at() != TQSql::BeforeFirst) {
+ return FALSE;
+ }
+ if (d->seek(0)) {
+ setAt(0);
+ return TRUE;
+ }
+ return cacheNext();
+}
+
+bool TQtSqlCachedResult::fetchLast()
+{
+ if (at() == TQSql::AfterLast) {
+ if (d->forwardOnly)
+ return FALSE;
+ else
+ return fetch(d->rowCacheEnd - 1);
+ }
+
+ int i = at();
+ while (fetchNext())
+ i++; /* brute force */
+ if (d->forwardOnly && at() == TQSql::AfterLast) {
+ setAt(i);
+ return TRUE;
+ } else {
+ return fetch(d->rowCacheEnd - 1);
+ }
+}
+
+TQVariant TQtSqlCachedResult::data(int i)
+{
+ if (!d->current || i >= (int)d->current->size() || i < 0)
+ return TQVariant();
+
+ return (*d->current)[i];
+}
+
+bool TQtSqlCachedResult::isNull(int i)
+{
+ if (!d->current || i >= (int)d->current->size() || i < 0)
+ return TRUE;
+
+ return (*d->current)[i].isNull();
+}
+
+void TQtSqlCachedResult::cleanup()
+{
+ setAt(TQSql::BeforeFirst);
+ setActive(FALSE);
+ d->cleanup();
+}
+
+bool TQtSqlCachedResult::cacheNext()
+{
+ if (!gotoNext(d->next())) {
+ d->revertLast();
+ return FALSE;
+ }
+ setAt(at() + 1);
+ return TRUE;
+}
+
+int TQtSqlCachedResult::colCount() const
+{
+ return d->colCount;
+}
+#endif // QT_NO_SQL
diff --git a/src/sql/drivers/cache/qsqlcachedresult.h b/src/sql/drivers/cache/qsqlcachedresult.h
new file mode 100644
index 000000000..1cdae7ae2
--- /dev/null
+++ b/src/sql/drivers/cache/qsqlcachedresult.h
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** Definition of shared TQt SQL module classes
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the sql module of the TQt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free TQt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing retquirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
+** included in the packaging of this file. Licensees holding valid TQt
+** Commercial licenses may use this file in accordance with the TQt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#ifndef TQSQLCACHEDRESULT_H
+#define TQSQLCACHEDRESULT_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the TQt API. It exists for the convenience
+// of other TQt classes. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+//
+
+#include <qglobal.h>
+#include <qvariant.h>
+#include <qptrvector.h>
+#include <qvaluevector.h>
+#include <qsqlresult.h>
+
+#if !defined( QT_MODULE_SQL ) || defined( QT_LICENSE_PROFESSIONAL )
+#define TQM_EXPORT_SQL
+#else
+#define TQM_EXPORT_SQL Q_EXPORT
+#endif
+
+#ifndef QT_NO_SQL
+
+class TQtSqlCachedResultPrivate;
+
+class TQM_EXPORT_SQL TQtSqlCachedResult: public TQSqlResult
+{
+public:
+ virtual ~TQtSqlCachedResult();
+
+ typedef TQValueVector<TQVariant> RowCache;
+ typedef TQPtrVector<RowCache> RowsetCache;
+
+protected:
+ TQtSqlCachedResult(const TQSqlDriver * db);
+
+ void init(int colCount);
+ void cleanup();
+ bool cacheNext();
+
+ virtual bool gotoNext(RowCache* row) = 0;
+
+ TQVariant data(int i);
+ bool isNull(int i);
+ bool fetch(int i);
+ bool fetchNext();
+ bool fetchPrev();
+ bool fetchFirst();
+ bool fetchLast();
+
+ int colCount() const;
+
+private:
+ TQtSqlCachedResultPrivate *d;
+};
+
+
+#endif
+
+#endif