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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/sqlite
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
Diffstat (limited to 'src/sql/drivers/sqlite')
-rw-r--r--src/sql/drivers/sqlite/qsql_sqlite.cpp513
-rw-r--r--src/sql/drivers/sqlite/qsql_sqlite.h90
2 files changed, 603 insertions, 0 deletions
diff --git a/src/sql/drivers/sqlite/qsql_sqlite.cpp b/src/sql/drivers/sqlite/qsql_sqlite.cpp
new file mode 100644
index 000000000..ecdda1c0c
--- /dev/null
+++ b/src/sql/drivers/sqlite/qsql_sqlite.cpp
@@ -0,0 +1,513 @@
+/****************************************************************************
+**
+** Implementation of SQLite driver classes.
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the sql module of the TQt GUI Toolkit.
+** EDITIONS: FREE, ENTERPRISE
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+****************************************************************************/
+
+#include "qsql_sqlite.h"
+
+#include <qdatetime.h>
+#include <qregexp.h>
+#include <qfile.h>
+
+#if (QT_VERSION-0 < 0x030000)
+# include <qvector.h>
+# if !defined Q_WS_WIN32
+# include <unistd.h>
+# endif
+# include "../../../3rdparty/libraries/sqlite/sqlite.h"
+#else
+# include <qptrvector.h>
+# if !defined Q_WS_WIN32
+# include <unistd.h>
+# endif
+# include <sqlite.h>
+#endif
+
+typedef struct sqlite_vm sqlite_vm;
+
+#define TQSQLITE_DRIVER_NAME "TQSQLITE"
+
+static TQSqlVariant::Type nameToType(const TQString& typeName)
+{
+ TQString tName = typeName.upper();
+ if (tName.startsWith("INT"))
+ return TQSqlVariant::Int;
+ if (tName.startsWith("FLOAT") || tName.startsWith("NUMERIC"))
+ return TQSqlVariant::Double;
+ if (tName.startsWith("BOOL"))
+ return TQSqlVariant::Bool;
+ // SQLite is typeless - consider everything else as string
+ return TQSqlVariant::String;
+}
+
+class TQSQLiteDriverPrivate
+{
+public:
+ TQSQLiteDriverPrivate();
+ sqlite *access;
+ bool utf8;
+};
+
+TQSQLiteDriverPrivate::TQSQLiteDriverPrivate() : access(0)
+{
+ utf8 = (qstrcmp(sqlite_encoding, "UTF-8") == 0);
+}
+
+class TQSQLiteResultPrivate
+{
+public:
+ TQSQLiteResultPrivate(TQSQLiteResult *res);
+ void cleanup();
+ bool fetchNext(TQtSqlCachedResult::RowCache *row);
+ bool isSelect();
+ // initializes the recordInfo and the cache
+ void init(const char **cnames, int numCols, TQtSqlCachedResult::RowCache **row = 0);
+ void finalize();
+
+ TQSQLiteResult* q;
+ sqlite *access;
+
+ // and we have too keep our own struct for the data (sqlite works via
+ // callback.
+ const char *currentTail;
+ sqlite_vm *currentMachine;
+
+ uint skippedStatus: 1; // the status of the fetchNext() that's skipped
+ TQtSqlCachedResult::RowCache *skipRow;
+
+ uint utf8: 1;
+ TQSqlRecordInfo rInf;
+};
+
+static const uint initial_cache_size = 128;
+
+TQSQLiteResultPrivate::TQSQLiteResultPrivate(TQSQLiteResult* res) : q(res), access(0), currentTail(0),
+ currentMachine(0), skippedStatus(FALSE), skipRow(0), utf8(FALSE)
+{
+}
+
+void TQSQLiteResultPrivate::cleanup()
+{
+ finalize();
+ rInf.clear();
+ currentTail = 0;
+ currentMachine = 0;
+ skippedStatus = FALSE;
+ delete skipRow;
+ skipRow = 0;
+ q->setAt(TQSql::BeforeFirst);
+ q->setActive(FALSE);
+ q->cleanup();
+}
+
+void TQSQLiteResultPrivate::finalize()
+{
+ if (!currentMachine)
+ return;
+
+ char* err = 0;
+ int res = sqlite_finalize(currentMachine, &err);
+ if (err) {
+ q->setLastError(TQSqlError("Unable to fetch results", err, TQSqlError::Statement, res));
+ sqlite_freemem(err);
+ }
+ currentMachine = 0;
+}
+
+// called on first fetch
+void TQSQLiteResultPrivate::init(const char **cnames, int numCols, TQtSqlCachedResult::RowCache **row)
+{
+ if (!cnames)
+ return;
+
+ rInf.clear();
+ if (numCols <= 0)
+ return;
+
+ for (int i = 0; i < numCols; ++i) {
+ const char* lastDot = strrchr(cnames[i], '.');
+ const char* fieldName = lastDot ? lastDot + 1 : cnames[i];
+ rInf.append(TQSqlFieldInfo(fieldName, nameToType(cnames[i+numCols])));
+ }
+ // skip the first fetch
+ if (row && !*row) {
+ *row = new TQtSqlCachedResult::RowCache(numCols);
+ skipRow = *row;
+ }
+}
+
+bool TQSQLiteResultPrivate::fetchNext(TQtSqlCachedResult::RowCache* row)
+{
+ // may be caching.
+ const char **fvals;
+ const char **cnames;
+ int colNum;
+ int res;
+ int i;
+
+ if (skipRow) {
+ // already fetched
+ if (row)
+ *row = *skipRow;
+ delete skipRow;
+ skipRow = 0;
+ return skippedStatus;
+ }
+
+ if (!currentMachine)
+ return FALSE;
+
+ // keep trying while busy, wish I could implement this better.
+ while ((res = sqlite_step(currentMachine, &colNum, &fvals, &cnames)) == SQLITE_BUSY) {
+ // sleep instead requesting result again immidiately.
+#if defined Q_WS_WIN32
+ Sleep(1000);
+#else
+ sleep(1);
+#endif
+ }
+
+ switch(res) {
+ case SQLITE_ROW:
+ // check to see if should fill out columns
+ if (rInf.isEmpty())
+ // must be first call.
+ init(cnames, colNum, &row);
+ if (!fvals)
+ return FALSE;
+ if (!row)
+ return TRUE;
+ for (i = 0; i < colNum; ++i)
+ (*row)[i] = utf8 ? TQString::fromUtf8(fvals[i]) : TQString(fvals[i]);
+ return TRUE;
+ case SQLITE_DONE:
+ if (rInf.isEmpty())
+ // must be first call.
+ init(cnames, colNum);
+ q->setAt(TQSql::AfterLast);
+ return FALSE;
+ case SQLITE_ERROR:
+ case SQLITE_MISUSE:
+ default:
+ // something wrong, don't get col info, but still return false
+ finalize(); // finalize to get the error message.
+ q->setAt(TQSql::AfterLast);
+ return FALSE;
+ }
+ return FALSE;
+}
+
+TQSQLiteResult::TQSQLiteResult(const TQSQLiteDriver* db)
+: TQtSqlCachedResult(db)
+{
+ d = new TQSQLiteResultPrivate(this);
+ d->access = db->d->access;
+ d->utf8 = db->d->utf8;
+}
+
+TQSQLiteResult::~TQSQLiteResult()
+{
+ d->cleanup();
+ delete d;
+}
+
+/*
+ Execute \a query.
+*/
+bool TQSQLiteResult::reset (const TQString& query)
+{
+ // this is where we build a query.
+ if (!driver())
+ return FALSE;
+ if (!driver()-> isOpen() || driver()->isOpenError())
+ return FALSE;
+
+ d->cleanup();
+
+ // Um, ok. callback based so.... pass private static function for this.
+ setSelect(FALSE);
+ char *err = 0;
+ int res = sqlite_compile(d->access,
+ d->utf8 ? (const char*)query.utf8().data() : query.ascii(),
+ &(d->currentTail),
+ &(d->currentMachine),
+ &err);
+ if (res != SQLITE_OK || err) {
+ setLastError(TQSqlError("Unable to execute statement", err, TQSqlError::Statement, res));
+ sqlite_freemem(err);
+ }
+ //if (*d->currentTail != '\000' then there is more sql to eval
+ if (!d->currentMachine) {
+ setActive(FALSE);
+ return FALSE;
+ }
+ // we have to fetch one row to find out about
+ // the structure of the result set
+ d->skippedStatus = d->fetchNext(0);
+ setSelect(!d->rInf.isEmpty());
+ if (isSelect())
+ init(d->rInf.count());
+ setActive(TRUE);
+ return TRUE;
+}
+
+bool TQSQLiteResult::gotoNext(TQtSqlCachedResult::RowCache* row)
+{
+ return d->fetchNext(row);
+}
+
+int TQSQLiteResult::size()
+{
+ return -1;
+}
+
+int TQSQLiteResult::numRowsAffected()
+{
+ return sqlite_changes(d->access);
+}
+
+/////////////////////////////////////////////////////////
+
+TQSQLiteDriver::TQSQLiteDriver(TQObject * parent, const char * name)
+ : TQSqlDriver(parent, name ? name : TQSQLITE_DRIVER_NAME)
+{
+ d = new TQSQLiteDriverPrivate();
+}
+
+TQSQLiteDriver::TQSQLiteDriver(sqlite *connection, TQObject *parent, const char *name)
+ : TQSqlDriver(parent, name ? name : TQSQLITE_DRIVER_NAME)
+{
+ d = new TQSQLiteDriverPrivate();
+ d->access = connection;
+ setOpen(TRUE);
+ setOpenError(FALSE);
+}
+
+
+TQSQLiteDriver::~TQSQLiteDriver()
+{
+ delete d;
+}
+
+bool TQSQLiteDriver::hasFeature(DriverFeature f) const
+{
+ switch (f) {
+ case Transactions:
+ return TRUE;
+#if (QT_VERSION-0 >= 0x030000)
+ case Unicode:
+ return d->utf8;
+#endif
+// case BLOB:
+ default:
+ return FALSE;
+ }
+}
+
+/*
+ SQLite dbs have no user name, passwords, hosts or ports.
+ just file names.
+*/
+bool TQSQLiteDriver::open(const TQString & db, const TQString &, const TQString &, const TQString &, int, const TQString &)
+{
+ if (isOpen())
+ close();
+
+ if (db.isEmpty())
+ return FALSE;
+
+ char* err = 0;
+ d->access = sqlite_open(TQFile::encodeName(db), 0, &err);
+ if (err) {
+ setLastError(TQSqlError("Error to open database", err, TQSqlError::Connection));
+ sqlite_freemem(err);
+ err = 0;
+ }
+
+ if (d->access) {
+ setOpen(TRUE);
+ setOpenError(FALSE);
+ return TRUE;
+ }
+ setOpenError(TRUE);
+ return FALSE;
+}
+
+void TQSQLiteDriver::close()
+{
+ if (isOpen()) {
+ sqlite_close(d->access);
+ d->access = 0;
+ setOpen(FALSE);
+ setOpenError(FALSE);
+ }
+}
+
+TQSqlQuery TQSQLiteDriver::createQuery() const
+{
+ return TQSqlQuery(new TQSQLiteResult(this));
+}
+
+bool TQSQLiteDriver::beginTransaction()
+{
+ if (!isOpen() || isOpenError())
+ return FALSE;
+
+ char* err;
+ int res = sqlite_exec(d->access, "BEGIN", 0, this, &err);
+
+ if (res == SQLITE_OK)
+ return TRUE;
+
+ setLastError(TQSqlError("Unable to begin transaction", err, TQSqlError::Transaction, res));
+ sqlite_freemem(err);
+ return FALSE;
+}
+
+bool TQSQLiteDriver::commitTransaction()
+{
+ if (!isOpen() || isOpenError())
+ return FALSE;
+
+ char* err;
+ int res = sqlite_exec(d->access, "COMMIT", 0, this, &err);
+
+ if (res == SQLITE_OK)
+ return TRUE;
+
+ setLastError(TQSqlError("Unable to commit transaction", err, TQSqlError::Transaction, res));
+ sqlite_freemem(err);
+ return FALSE;
+}
+
+bool TQSQLiteDriver::rollbackTransaction()
+{
+ if (!isOpen() || isOpenError())
+ return FALSE;
+
+ char* err;
+ int res = sqlite_exec(d->access, "ROLLBACK", 0, this, &err);
+
+ if (res == SQLITE_OK)
+ return TRUE;
+
+ setLastError(TQSqlError("Unable to rollback Transaction", err, TQSqlError::Transaction, res));
+ sqlite_freemem(err);
+ return FALSE;
+}
+
+TQStringList TQSQLiteDriver::tables(const TQString &typeName) const
+{
+ TQStringList res;
+ if (!isOpen())
+ return res;
+ int type = typeName.toInt();
+
+ TQSqlQuery q = createQuery();
+ q.setForwardOnly(TRUE);
+#if (QT_VERSION-0 >= 0x030000)
+ if ((type & (int)TQSql::Tables) && (type & (int)TQSql::Views))
+ q.exec("SELECT name FROM sqlite_master WHERE type='table' OR type='view'");
+ else if (typeName.isEmpty() || (type & (int)TQSql::Tables))
+ q.exec("SELECT name FROM sqlite_master WHERE type='table'");
+ else if (type & (int)TQSql::Views)
+ q.exec("SELECT name FROM sqlite_master WHERE type='view'");
+#else
+ q.exec("SELECT name FROM sqlite_master WHERE type='table' OR type='view'");
+#endif
+
+
+ if (q.isActive()) {
+ while(q.next())
+ res.append(q.value(0).toString());
+ }
+
+#if (QT_VERSION-0 >= 0x030000)
+ if (type & (int)TQSql::SystemTables) {
+ // there are no internal tables beside this one:
+ res.append("sqlite_master");
+ }
+#endif
+
+ return res;
+}
+
+TQSqlIndex TQSQLiteDriver::primaryIndex(const TQString &tblname) const
+{
+ TQSqlRecordInfo rec(recordInfo(tblname)); // expensive :(
+
+ if (!isOpen())
+ return TQSqlIndex();
+
+ TQSqlQuery q = createQuery();
+ q.setForwardOnly(TRUE);
+ // finrst find a UNITQUE INDEX
+ q.exec("PRAGMA index_list('" + tblname + "');");
+ TQString indexname;
+ while(q.next()) {
+ if (q.value(2).toInt()==1) {
+ indexname = q.value(1).toString();
+ break;
+ }
+ }
+ if (indexname.isEmpty())
+ return TQSqlIndex();
+
+ q.exec("PRAGMA index_info('" + indexname + "');");
+
+ TQSqlIndex index(tblname, indexname);
+ while(q.next()) {
+ TQString name = q.value(2).toString();
+ TQSqlVariant::Type type = TQSqlVariant::Invalid;
+ if (rec.contains(name))
+ type = rec.find(name).type();
+ index.append(TQSqlField(name, type));
+ }
+ return index;
+}
+
+TQSqlRecordInfo TQSQLiteDriver::recordInfo(const TQString &tbl) const
+{
+ if (!isOpen())
+ return TQSqlRecordInfo();
+
+ TQSqlQuery q = createQuery();
+ q.setForwardOnly(TRUE);
+ q.exec("SELECT * FROM " + tbl + " LIMIT 1");
+ return recordInfo(q);
+}
+
+TQSqlRecord TQSQLiteDriver::record(const TQString &tblname) const
+{
+ if (!isOpen())
+ return TQSqlRecord();
+
+ return recordInfo(tblname).toRecord();
+}
+
+TQSqlRecord TQSQLiteDriver::record(const TQSqlQuery& query) const
+{
+ if (query.isActive() && query.driver() == this) {
+ TQSQLiteResult* result = (TQSQLiteResult*)query.result();
+ return result->d->rInf.toRecord();
+ }
+ return TQSqlRecord();
+}
+
+TQSqlRecordInfo TQSQLiteDriver::recordInfo(const TQSqlQuery& query) const
+{
+ if (query.isActive() && query.driver() == this) {
+ TQSQLiteResult* result = (TQSQLiteResult*)query.result();
+ return result->d->rInf;
+ }
+ return TQSqlRecordInfo();
+}
diff --git a/src/sql/drivers/sqlite/qsql_sqlite.h b/src/sql/drivers/sqlite/qsql_sqlite.h
new file mode 100644
index 000000000..ccde9b865
--- /dev/null
+++ b/src/sql/drivers/sqlite/qsql_sqlite.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Definition of SQLite driver classes.
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the sql module of the TQt GUI Toolkit.
+** EDITIONS: FREE, ENTERPRISE
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+****************************************************************************/
+
+#ifndef TQSQL_SQLITE_H
+#define TQSQL_SQLITE_H
+
+#include <qsqldriver.h>
+#include <qsqlresult.h>
+#include <qsqlrecord.h>
+#include <qsqlindex.h>
+#include "../cache/qsqlcachedresult.h"
+
+#if (QT_VERSION-0 >= 0x030000)
+typedef TQVariant TQSqlVariant;
+#endif
+
+#if defined (Q_OS_WIN32)
+# include <qt_windows.h>
+#endif
+
+class TQSQLiteDriverPrivate;
+class TQSQLiteResultPrivate;
+class TQSQLiteDriver;
+struct sqlite;
+
+class TQSQLiteResult : public TQtSqlCachedResult
+{
+ friend class TQSQLiteDriver;
+ friend class TQSQLiteResultPrivate;
+public:
+ TQSQLiteResult(const TQSQLiteDriver* db);
+ ~TQSQLiteResult();
+
+protected:
+ bool gotoNext(TQtSqlCachedResult::RowCache* row);
+ bool reset (const TQString& query);
+ int size();
+ int numRowsAffected();
+
+private:
+ TQSQLiteResultPrivate* d;
+};
+
+class TQSQLiteDriver : public TQSqlDriver
+{
+ friend class TQSQLiteResult;
+public:
+ TQSQLiteDriver(TQObject *parent = 0, const char *name = 0);
+ TQSQLiteDriver(sqlite *connection, TQObject *parent = 0, const char *name = 0);
+ ~TQSQLiteDriver();
+ bool hasFeature(DriverFeature f) const;
+ bool open(const TQString & db,
+ const TQString & user,
+ const TQString & password,
+ const TQString & host,
+ int port,
+ const TQString & connOpts);
+ bool open( const TQString & db,
+ const TQString & user,
+ const TQString & password,
+ const TQString & host,
+ int port ) { return open (db, user, password, host, port, TQString()); }
+ void close();
+ TQSqlQuery createQuery() const;
+ bool beginTransaction();
+ bool commitTransaction();
+ bool rollbackTransaction();
+ TQStringList tables(const TQString& user) const;
+
+ TQSqlRecord record(const TQString& tablename) const;
+ TQSqlRecordInfo recordInfo(const TQString& tablename) const;
+ TQSqlIndex primaryIndex(const TQString &table) const;
+ TQSqlRecord record(const TQSqlQuery& query) const;
+ TQSqlRecordInfo recordInfo(const TQSqlQuery& query) const;
+
+private:
+ TQSQLiteDriverPrivate* d;
+};
+#endif