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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 448 insertions, 0 deletions

diff --git a/src/declarative/qml/qdeclarativesqldatabase.cpp b/src/declarative/qml/qdeclarativesqldatabase.cpp
new file mode 100644
index 0000000000..4ed2bba525
--- /dev/null
+++ b/src/declarative/qml/qdeclarativesqldatabase.cpp
@@ -0,0 +1,448 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "private/qdeclarativesqldatabase_p.h"
+
+#include "qdeclarativeengine.h"
+#include "private/qdeclarativeengine_p.h"
+#include "private/qdeclarativerefcount_p.h"
+#include "private/qdeclarativeengine_p.h"
+
+#include <QtCore/qobject.h>
+#include <QtScript/qscriptvalue.h>
+#include <QtScript/qscriptvalueiterator.h>
+#include <QtScript/qscriptcontext.h>
+#include <QtScript/qscriptengine.h>
+#include <QtScript/qscriptclasspropertyiterator.h>
+#include <QtSql/qsqldatabase.h>
+#include <QtSql/qsqlquery.h>
+#include <QtSql/qsqlerror.h>
+#include <QtSql/qsqlrecord.h>
+#include <QtCore/qstack.h>
+#include <QtCore/qcryptographichash.h>
+#include <QtCore/qsettings.h>
+#include <QtCore/qdir.h>
+#include <QtCore/qdebug.h>
+
+Q_DECLARE_METATYPE(QSqlDatabase)
+Q_DECLARE_METATYPE(QSqlQuery)
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeSqlQueryScriptClass: public QScriptClass {
+public:
+    QDeclarativeSqlQueryScriptClass(QScriptEngine *engine) : QScriptClass(engine)
+    {
+        str_length = engine->toStringHandle(QLatin1String("length"));
+        str_forwardOnly = engine->toStringHandle(QLatin1String("forwardOnly")); // not in HTML5 (an optimization)
+    }
+
+    QueryFlags queryProperty(const QScriptValue &,
+                             const QScriptString &name,
+                             QueryFlags flags, uint *)
+    {
+        if (flags & HandlesReadAccess) {
+            if (name == str_length) {
+                return HandlesReadAccess;
+            } else if (name == str_forwardOnly) {
+                return flags;
+            }
+        }
+        if (flags & HandlesWriteAccess)
+            if (name == str_forwardOnly)
+                return flags;
+        return 0;
+    }
+
+    QScriptValue property(const QScriptValue &object,
+                          const QScriptString &name, uint)
+    {
+        QSqlQuery query = qscriptvalue_cast<QSqlQuery>(object.data());
+        if (name == str_length) {
+            int s = query.size();
+            if (s<0) {
+                // Inefficient.
+                if (query.last()) {
+                    return query.at()+1;
+                } else {
+                    return 0;
+                }
+            } else {
+                return s;
+            }
+        } else if (name == str_forwardOnly) {
+            return query.isForwardOnly();
+        }
+        return engine()->undefinedValue();
+    }
+
+    void setProperty(QScriptValue &object,
+                      const QScriptString &name, uint, const QScriptValue & value)
+    {
+        if (name == str_forwardOnly) {
+            QSqlQuery query = qscriptvalue_cast<QSqlQuery>(object.data());
+            query.setForwardOnly(value.toBool());
+        }
+    }
+
+    QScriptValue::PropertyFlags propertyFlags(const QScriptValue &/*object*/, const QScriptString &name, uint /*id*/)
+    {
+        if (name == str_length) {
+            return QScriptValue::Undeletable
+                | QScriptValue::SkipInEnumeration;
+        }
+        return QScriptValue::Undeletable;
+    }
+
+private:
+    QScriptString str_length;
+    QScriptString str_forwardOnly;
+};
+
+// If the spec changes to allow iteration, check git history...
+// class QDeclarativeSqlQueryScriptClassPropertyIterator : public QScriptClassPropertyIterator
+
+
+
+enum SqlException {
+    UNKNOWN_ERR,
+    DATABASE_ERR,
+    VERSION_ERR,
+    TOO_LARGE_ERR,
+    QUOTA_ERR,
+    SYNTAX_ERR,
+    CONSTRAINT_ERR,
+    TIMEOUT_ERR
+};
+
+static const char* sqlerror[] = {
+    "UNKNOWN_ERR",
+    "DATABASE_ERR",
+    "VERSION_ERR",
+    "TOO_LARGE_ERR",
+    "QUOTA_ERR",
+    "SYNTAX_ERR",
+    "CONSTRAINT_ERR",
+    "TIMEOUT_ERR",
+    0
+};
+
+#define THROW_SQL(error, desc) \
+{ \
+    QScriptValue errorValue = context->throwError(desc); \
+    errorValue.setProperty(QLatin1String("code"), error); \
+    return errorValue; \
+}
+
+static QString qmlsqldatabase_databasesPath(QScriptEngine *engine)
+{
+    QDeclarativeScriptEngine *qmlengine = static_cast<QDeclarativeScriptEngine*>(engine);
+    return qmlengine->offlineStoragePath
+            + QDir::separator() + QLatin1String("Databases");
+}
+
+static void qmlsqldatabase_initDatabasesPath(QScriptEngine *engine)
+{
+    QDir().mkpath(qmlsqldatabase_databasesPath(engine));
+}
+
+static QString qmlsqldatabase_databaseFile(const QString& connectionName, QScriptEngine *engine)
+{
+    return qmlsqldatabase_databasesPath(engine) + QDir::separator()
+            + connectionName;
+}
+
+
+static QScriptValue qmlsqldatabase_item(QScriptContext *context, QScriptEngine *engine)
+{
+    QSqlQuery query = qscriptvalue_cast<QSqlQuery>(context->thisObject().data());
+    int i = context->argument(0).toNumber();
+    if (query.at() == i || query.seek(i)) { // Qt 4.6 doesn't optimize seek(at())
+        QSqlRecord r = query.record();
+        QScriptValue row = engine->newObject();
+        for (int j=0; j<r.count(); ++j) {
+            row.setProperty(r.fieldName(j), QScriptValue(engine,r.value(j).toString()));
+        }
+        return row;
+    }
+    return engine->undefinedValue();
+}
+
+static QScriptValue qmlsqldatabase_executeSql_outsidetransaction(QScriptContext *context, QScriptEngine * /*engine*/)
+{
+    THROW_SQL(DATABASE_ERR,QDeclarativeEngine::tr("executeSql called outside transaction()"));
+}
+
+static QScriptValue qmlsqldatabase_executeSql(QScriptContext *context, QScriptEngine *engine)
+{
+    QSqlDatabase db = qscriptvalue_cast<QSqlDatabase>(context->thisObject());
+    QString sql = context->argument(0).toString();
+    QSqlQuery query(db);
+    bool err = false;
+
+    QScriptValue result;
+
+    if (query.prepare(sql)) {
+        if (context->argumentCount() > 1) {
+            QScriptValue values = context->argument(1);
+            if (values.isObject()) {
+                if (values.isArray()) {
+                    int size = values.property(QLatin1String("length")).toInt32();
+                    for (int i = 0; i < size; ++i)
+                        query.bindValue(i, values.property(i).toVariant());
+                } else {
+                    for (QScriptValueIterator it(values); it.hasNext();) {
+                        it.next();
+                        query.bindValue(it.name(),it.value().toVariant());
+                    }
+                }
+            } else {
+                query.bindValue(0,values.toVariant());
+            }
+        }
+        if (query.exec()) {
+            result = engine->newObject();
+            QDeclarativeScriptEngine *qmlengine = static_cast<QDeclarativeScriptEngine*>(engine);
+            if (!qmlengine->sqlQueryClass)
+                qmlengine->sqlQueryClass = new QDeclarativeSqlQueryScriptClass(engine);
+            QScriptValue rows = engine->newObject(qmlengine->sqlQueryClass);
+            rows.setData(engine->newVariant(QVariant::fromValue(query)));
+            rows.setProperty(QLatin1String("item"), engine->newFunction(qmlsqldatabase_item,1), QScriptValue::SkipInEnumeration);
+            result.setProperty(QLatin1String("rows"),rows);
+            result.setProperty(QLatin1String("rowsAffected"),query.numRowsAffected());
+            result.setProperty(QLatin1String("insertId"),query.lastInsertId().toString());
+        } else {
+            err = true;
+        }
+    } else {
+        err = true;
+    }
+    if (err)
+        THROW_SQL(DATABASE_ERR,query.lastError().text());
+    return result;
+}
+
+static QScriptValue qmlsqldatabase_executeSql_readonly(QScriptContext *context, QScriptEngine *engine)
+{
+    QString sql = context->argument(0).toString();
+    if (sql.startsWith(QLatin1String("SELECT"),Qt::CaseInsensitive)) {
+        return qmlsqldatabase_executeSql(context,engine);
+    } else {
+        THROW_SQL(SYNTAX_ERR,QDeclarativeEngine::tr("Read-only Transaction"))
+    }
+}
+
+static QScriptValue qmlsqldatabase_change_version(QScriptContext *context, QScriptEngine *engine)
+{
+    if (context->argumentCount() < 2)
+        return engine->undefinedValue();
+
+    QSqlDatabase db = qscriptvalue_cast<QSqlDatabase>(context->thisObject());
+    QString from_version = context->argument(0).toString();
+    QString to_version = context->argument(1).toString();
+    QScriptValue callback = context->argument(2);
+
+    QScriptValue instance = engine->newObject();
+    instance.setProperty(QLatin1String("executeSql"), engine->newFunction(qmlsqldatabase_executeSql,1));
+    QScriptValue tx = engine->newVariant(instance,QVariant::fromValue(db));
+
+    QString foundvers = context->thisObject().property(QLatin1String("version")).toString();
+    if (from_version!=foundvers) {
+        THROW_SQL(VERSION_ERR,QDeclarativeEngine::tr("Version mismatch: expected %1, found %2").arg(from_version).arg(foundvers));
+        return engine->undefinedValue();
+    }
+
+    bool ok = true;
+    if (callback.isFunction()) {
+        ok = false;
+        db.transaction();
+        callback.call(QScriptValue(), QScriptValueList() << tx);
+        if (engine->hasUncaughtException()) {
+            db.rollback();
+        } else {
+            if (!db.commit()) {
+                db.rollback();
+                THROW_SQL(UNKNOWN_ERR,QDeclarativeEngine::tr("SQL transaction failed"));
+            } else {
+                ok = true;
+            }
+        }
+    }
+
+    if (ok) {
+        context->thisObject().setProperty(QLatin1String("version"), to_version, QScriptValue::ReadOnly);
+#ifndef QT_NO_SETTINGS
+        QSettings ini(qmlsqldatabase_databaseFile(db.connectionName(),engine) + QLatin1String(".ini"), QSettings::IniFormat);
+        ini.setValue(QLatin1String("Version"), to_version);
+#endif
+    }
+
+    return engine->undefinedValue();
+}
+
+static QScriptValue qmlsqldatabase_transaction_shared(QScriptContext *context, QScriptEngine *engine, bool readOnly)
+{
+    QSqlDatabase db = qscriptvalue_cast<QSqlDatabase>(context->thisObject());
+    QScriptValue callback = context->argument(0);
+    if (!callback.isFunction())
+        THROW_SQL(UNKNOWN_ERR,QDeclarativeEngine::tr("transaction: missing callback"));
+
+    QScriptValue instance = engine->newObject();
+    instance.setProperty(QLatin1String("executeSql"),
+        engine->newFunction(readOnly ? qmlsqldatabase_executeSql_readonly : qmlsqldatabase_executeSql,1));
+    QScriptValue tx = engine->newVariant(instance,QVariant::fromValue(db));
+
+    db.transaction();
+    callback.call(QScriptValue(), QScriptValueList() << tx);
+    instance.setProperty(QLatin1String("executeSql"),
+        engine->newFunction(qmlsqldatabase_executeSql_outsidetransaction));
+    if (engine->hasUncaughtException()) {
+        db.rollback();
+    } else {
+        if (!db.commit())
+            db.rollback();
+    }
+    return engine->undefinedValue();
+}
+
+static QScriptValue qmlsqldatabase_transaction(QScriptContext *context, QScriptEngine *engine)
+{
+    return qmlsqldatabase_transaction_shared(context,engine,false);
+}
+static QScriptValue qmlsqldatabase_read_transaction(QScriptContext *context, QScriptEngine *engine)
+{
+    return qmlsqldatabase_transaction_shared(context,engine,true);
+}
+
+/*
+    Currently documented in doc/src/declarative/globalobject.qdoc
+*/
+static QScriptValue qmlsqldatabase_open_sync(QScriptContext *context, QScriptEngine *engine)
+{
+#ifndef QT_NO_SETTINGS
+    qmlsqldatabase_initDatabasesPath(engine);
+
+    QSqlDatabase database;
+
+    QString dbname = context->argument(0).toString();
+    QString dbversion = context->argument(1).toString();
+    QString dbdescription = context->argument(2).toString();
+    int dbestimatedsize = context->argument(3).toNumber();
+    QScriptValue dbcreationCallback = context->argument(4);
+
+    QCryptographicHash md5(QCryptographicHash::Md5);
+    md5.addData(dbname.toUtf8());
+    QString dbid(QLatin1String(md5.result().toHex()));
+
+    QString basename = qmlsqldatabase_databaseFile(dbid, engine);
+    bool created = false;
+    QString version = dbversion;
+
+    {
+        QSettings ini(basename+QLatin1String(".ini"),QSettings::IniFormat);
+
+        if (QSqlDatabase::connectionNames().contains(dbid)) {
+            database = QSqlDatabase::database(dbid);
+            version = ini.value(QLatin1String("Version")).toString();
+            if (version != dbversion && !dbversion.isEmpty() && !version.isEmpty())
+                THROW_SQL(VERSION_ERR,QDeclarativeEngine::tr("SQL: database version mismatch"));
+        } else {
+            created = !QFile::exists(basename+QLatin1String(".sqlite"));
+            database = QSqlDatabase::addDatabase(QLatin1String("QSQLITE"), dbid);
+            if (created) {
+                ini.setValue(QLatin1String("Name"), dbname);
+                if (dbcreationCallback.isFunction())
+                    version = QString();
+                ini.setValue(QLatin1String("Version"), version);
+                ini.setValue(QLatin1String("Description"), dbdescription);
+                ini.setValue(QLatin1String("EstimatedSize"), dbestimatedsize);
+                ini.setValue(QLatin1String("Driver"), QLatin1String("QSQLITE"));
+            } else {
+                if (!dbversion.isEmpty() && ini.value(QLatin1String("Version")) != dbversion) {
+                    // Incompatible
+                    THROW_SQL(VERSION_ERR,QDeclarativeEngine::tr("SQL: database version mismatch"));
+                }
+                version = ini.value(QLatin1String("Version")).toString();
+            }
+            database.setDatabaseName(basename+QLatin1String(".sqlite"));
+        }
+        if (!database.isOpen())
+            database.open();
+    }
+
+    QScriptValue instance = engine->newObject();
+    instance.setProperty(QLatin1String("transaction"), engine->newFunction(qmlsqldatabase_transaction,1));
+    instance.setProperty(QLatin1String("readTransaction"), engine->newFunction(qmlsqldatabase_read_transaction,1));
+    instance.setProperty(QLatin1String("version"), version, QScriptValue::ReadOnly);
+    instance.setProperty(QLatin1String("changeVersion"), engine->newFunction(qmlsqldatabase_change_version,3));
+
+    QScriptValue result = engine->newVariant(instance,QVariant::fromValue(database));
+
+    if (created && dbcreationCallback.isFunction()) {
+        dbcreationCallback.call(QScriptValue(), QScriptValueList() << result);
+    }
+
+    return result;
+#else
+    return engine->undefinedValue();
+#endif // QT_NO_SETTINGS
+}
+
+void qt_add_qmlsqldatabase(QScriptEngine *engine)
+{
+    QScriptValue openDatabase = engine->newFunction(qmlsqldatabase_open_sync, 4);
+    engine->globalObject().setProperty(QLatin1String("openDatabaseSync"), openDatabase);
+
+    QScriptValue sqlExceptionPrototype = engine->newObject();
+    for (int i=0; sqlerror[i]; ++i)
+        sqlExceptionPrototype.setProperty(QLatin1String(sqlerror[i]),
+            i,QScriptValue::ReadOnly | QScriptValue::Undeletable | QScriptValue::SkipInEnumeration);
+
+    engine->globalObject().setProperty(QLatin1String("SQLException"), sqlExceptionPrototype);
+}
+
+/*
+HTML5 "spec" says "rs.rows[n]", but WebKit only impelments "rs.rows.item(n)". We do both (and property iterator).
+We add a "forwardOnly" property that stops Qt caching results (code promises to only go forward
+through the data.
+*/
+
+QT_END_NAMESPACE