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a?adido el codigo del tree model

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modificada la funci?n de creaci?n de la base de datos (se crea la estructura de directorios, los c?mics y comic_info)

falta determinar qu? informaci?n habr? finalmente en la BD y tratar adecuadamente los errores
adem?s habr?a que mover el c?digo relacionado con la base de datos a la clase DataBaseManagement.
This commit is contained in:
Luis Ángel San Martín
2012-05-24 17:10:28 +02:00
parent 51a0f1b458
commit 3533a9ec64
10 changed files with 1013 additions and 352 deletions
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52
YACReaderLibrary/db/data_base_management.cpp Normal file
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#include "data_base_management.h"
#include <QtCore>
DataBaseManagement::DataBaseManagement()
:QObject(),dataBasesList()
{
}
TreeModel * DataBaseManagement::newTreeModel(QString path)
{
//la consulta se ejecuta...
QSqlQuery selectQuery(loadDatabase(path));
selectQuery.setForwardOnly(true);
selectQuery.exec("select * from folder order by parentId,name");
return new TreeModel(selectQuery);
}
QSqlDatabase DataBaseManagement::createDatabase(QString name, QString path)
{
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(QDir::cleanPath(path) + "/" + name + ".ydb");
if (!db.open())
qDebug() << db.lastError();
else {
qDebug() << db.tables();
db.close();
}
return db;
}
QSqlDatabase DataBaseManagement::loadDatabase(QString path)
{
//TODO check path
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(path);
if (!db.open()) {
/*QMessageBox::critical( 0, QObject::tr("Cannot open database"),
QObject::tr("Unable to establish a database connection.\n"
"This example needs SQLite support. Please read "
"the Qt SQL driver documentation for information how "
"to build it.\n\n"
"Click Cancel to exit."), QMessageBox::Cancel);*/
//se devuelve una base de datos vac<61>a e inv<6E>lida
return QSqlDatabase();
}
//devuelve la base de datos
return db;
}

22
YACReaderLibrary/db/data_base_management.h Normal file
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#ifndef __DATA_BASE_MANAGEMENT_H
#define __DATA_BASE_MANAGEMENT_H
#include <QtCore>
#include <QtSql>
#include <QSqlDatabase>
#include "treemodel.h"
class DataBaseManagement : public QObject
{
Q_OBJECT
private:
QList<QString> dataBasesList;
public:
DataBaseManagement();
TreeModel * newTreeModel(QString path);
QSqlDatabase createDatabase(QString name, QString path);
QSqlDatabase loadDatabase(QString path);
};
#endif

118
YACReaderLibrary/db/treeitem.cpp Normal file
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/****************************************************************************
**
** 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 examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
/*
treeitem.cpp
A container for items of data supplied by the simple tree model.
*/
#include <QStringList>
#include "treeitem.h"
//! [0]
TreeItem::TreeItem(const QList<QVariant> &data, TreeItem *parent)
{
parentItem = parent;
itemData = data;
}
//! [0]
//! [1]
TreeItem::~TreeItem()
{
qDeleteAll(childItems);
}
//! [1]
//! [2]
void TreeItem::appendChild(TreeItem *item)
{
item->parentItem = this;
//TODO insertar odernado
childItems.append(item);
}
//! [2]
//! [3]
TreeItem *TreeItem::child(int row)
{
return childItems.value(row);
}
//! [3]
//! [4]
int TreeItem::childCount() const
{
return childItems.count();
}
//! [4]
//! [5]
int TreeItem::columnCount() const
{
return itemData.count();
}
//! [5]
//! [6]
QVariant TreeItem::data(int column) const
{
return itemData.value(column);
}
//! [6]
//! [7]
TreeItem *TreeItem::parent()
{
return parentItem;
}
//! [7]
//! [8]
int TreeItem::row() const
{
if (parentItem)
return parentItem->childItems.indexOf(const_cast<TreeItem*>(this));
return 0;
}
//! [8]

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YACReaderLibrary/db/treeitem.h Normal file
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/****************************************************************************
**
** 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 examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef TREEITEM_H
#define TREEITEM_H
#include <QList>
#include <QVariant>
//! [0]
class TreeItem
{
public:
TreeItem(const QList<QVariant> &data, TreeItem *parent = 0);
~TreeItem();
void appendChild(TreeItem *child);
TreeItem *child(int row);
int childCount() const;
int columnCount() const;
QVariant data(int column) const;
int row() const;
TreeItem *parent();
TreeItem *parentItem;
unsigned long long int id;
private:
QList<TreeItem*> childItems;
QList<QVariant> itemData;
};
//! [0]
#endif

192
YACReaderLibrary/db/treemodel.cpp Normal file
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/****************************************************************************
**
** 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 examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
/*
treemodel.cpp
Provides a simple tree model to show how to create and use hierarchical
models.
*/
#include <QtGui>
#include "treeitem.h"
#include "treemodel.h"
//! [0]
TreeModel::TreeModel( QSqlQuery &sqlquery, QObject *parent)
: QAbstractItemModel(parent)
{
//lo m<>s probable es que el nodo ra<72>z no necesite tener informaci<63>n
QList<QVariant> rootData;
rootData << "root"; //id 0, padre 0, title "root" (el id, y el id del padre van a ir en la clase TreeItem)
rootItem = new TreeItem(rootData);
rootItem->id = 0;
setupModelData(sqlquery, rootItem);
}
//! [0]
//! [1]
TreeModel::~TreeModel()
{
delete rootItem;
}
//! [1]
//! [2]
int TreeModel::columnCount(const QModelIndex &parent) const
{
if (parent.isValid())
return static_cast<TreeItem*>(parent.internalPointer())->columnCount();
else
return rootItem->columnCount();
}
//! [2]
//! [3]
QVariant TreeModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
if (role != Qt::DisplayRole)
return QVariant();
TreeItem *item = static_cast<TreeItem*>(index.internalPointer());
return item->data(index.column());
}
//! [3]
//! [4]
Qt::ItemFlags TreeModel::flags(const QModelIndex &index) const
{
if (!index.isValid())
return 0;
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}
//! [4]
//! [5]
QVariant TreeModel::headerData(int section, Qt::Orientation orientation,
int role) const
{
if (orientation == Qt::Horizontal && role == Qt::DisplayRole)
return rootItem->data(section);
return QVariant();
}
//! [5]
//! [6]
QModelIndex TreeModel::index(int row, int column, const QModelIndex &parent)
const
{
if (!hasIndex(row, column, parent))
return QModelIndex();
TreeItem *parentItem;
if (!parent.isValid())
parentItem = rootItem;
else
parentItem = static_cast<TreeItem*>(parent.internalPointer());
TreeItem *childItem = parentItem->child(row);
if (childItem)
return createIndex(row, column, childItem);
else
return QModelIndex();
}
//! [6]
//! [7]
QModelIndex TreeModel::parent(const QModelIndex &index) const
{
if (!index.isValid())
return QModelIndex();
TreeItem *childItem = static_cast<TreeItem*>(index.internalPointer());
TreeItem *parentItem = childItem->parent();
if (parentItem == rootItem)
return QModelIndex();
return createIndex(parentItem->row(), 0, parentItem);
}
//! [7]
//! [8]
int TreeModel::rowCount(const QModelIndex &parent) const
{
TreeItem *parentItem;
if (parent.column() > 0)
return 0;
if (!parent.isValid())
parentItem = rootItem;
else
parentItem = static_cast<TreeItem*>(parent.internalPointer());
return parentItem->childCount();
}
//! [8]
void TreeModel::setupModelData(QSqlQuery &sqlquery, TreeItem *parent)
{
//64 bits para la primary key, es decir la misma precisi<73>n que soporta sqlit 2^64
//el diccionario permitir<69> encontrar cualquier nodo del <20>rbol r<>pidamente, de forma que a<>adir un hijo a un padre sea O(1)
QMap<unsigned long long int, TreeItem *> items;
//se a<>ade el nodo 0
items.insert(parent->id,parent);
while (sqlquery.next()) {
QList<QVariant> data;
data << sqlquery.value(2).toString();
TreeItem * item = new TreeItem(data);
item->id = sqlquery.value(0).toLongLong();
items.value(sqlquery.value(1).toLongLong())->appendChild(item);
//se a<>ade el item al map, de forma que se pueda encontrar como padre en siguientes iteraciones
items.insert(item->id,item);
}
}

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YACReaderLibrary/db/treemodel.h Normal file
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/****************************************************************************
**
** 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 examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef TREEMODEL_H
#define TREEMODEL_H
#include <QAbstractItemModel>
#include <QModelIndex>
#include <QVariant>
#include <QSqlQuery>
class TreeItem;
//! [0]
class TreeModel : public QAbstractItemModel
{
Q_OBJECT
public:
TreeModel( QSqlQuery &sqlquery, QObject *parent = 0);
~TreeModel();
QVariant data(const QModelIndex &index, int role) const;
Qt::ItemFlags flags(const QModelIndex &index) const;
QVariant headerData(int section, Qt::Orientation orientation,
int role = Qt::DisplayRole) const;
QModelIndex index(int row, int column,
const QModelIndex &parent = QModelIndex()) const;
QModelIndex parent(const QModelIndex &index) const;
int rowCount(const QModelIndex &parent = QModelIndex()) const;
int columnCount(const QModelIndex &parent = QModelIndex()) const;
private:
void setupModelData( QSqlQuery &sqlquery, TreeItem *parent);
TreeItem *rootItem; //el <20>rbol
};
//! [0]
#endif