Parent
294455b861
révision
3d8b086f53
@ -1,5 +0,0 @@
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<!DOCTYPE RCC><RCC version="1.0">
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<qresource>
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<file>create.sql</file>
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</qresource>
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</RCC>
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85
shared/dbmigrator.cpp
Fichier normal
85
shared/dbmigrator.cpp
Fichier normal
@ -0,0 +1,85 @@
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#include <QDirIterator>
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#include <QSqlQuery>
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#include <QSqlError>
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#include <QTextStream>
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#include <QDebug>
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#include "dbmigrator.h"
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#include "looqsgeneralexception.h"
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DBMigrator::DBMigrator(QSqlDatabase &db)
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{
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Q_INIT_RESOURCE(migrations);
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this->db = &db;
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}
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DBMigrator::~DBMigrator()
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{
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Q_CLEANUP_RESOURCE(migrations);
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}
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QStringList DBMigrator::getMigrationFilenames()
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{
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QStringList result;
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QDirIterator it(":/looqs-migrations/");
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while(it.hasNext())
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{
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result.append(it.next());
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}
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return result;
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}
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uint32_t DBMigrator::currentRevision()
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{
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QSqlQuery dbquery(*db);
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dbquery.exec("PRAGMA user_version;");
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if(!dbquery.next())
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{
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throw new LooqsGeneralException("Failed to query current db revision");
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}
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uint32_t result = dbquery.value(0).toUInt();
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return result;
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}
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bool DBMigrator::migrationNeeded()
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{
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QStringList migrations = getMigrationFilenames();
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uint32_t currentRev = currentRevision();
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return currentRev < static_cast<uint32_t>(migrations.size());
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}
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void DBMigrator::performMigrations()
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{
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QStringList migrations = getMigrationFilenames();
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uint32_t currentRev = currentRevision();
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uint32_t targetRev = (migrations.size());
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for(uint32_t i = currentRev + 1; i <= targetRev; i++)
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{
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QString fileName = QString(":/looqs-migrations/%1.sql").arg(i);
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QFile file{fileName};
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if(!file.open(QIODevice::ReadOnly))
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{
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throw LooqsGeneralException("Migration: Failed to find required revision file");
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}
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QTextStream stream(&file);
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db->transaction();
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while(!stream.atEnd())
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{
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QString sql = stream.readLine();
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QSqlQuery sqlQuery{*db};
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if(!sqlQuery.exec(sql))
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{
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db->rollback();
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throw LooqsGeneralException("Failed to execute sql statement while initializing database: " +
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sqlQuery.lastError().text());
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}
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}
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QSqlQuery updateVersion{*db};
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updateVersion.exec(QString("PRAGMA user_version=%1;").arg(i));
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db->commit();
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emit migrationDone(i);
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}
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emit done();
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}
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24
shared/dbmigrator.h
Fichier normal
24
shared/dbmigrator.h
Fichier normal
@ -0,0 +1,24 @@
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#ifndef DBMIGRATOR_H
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#define DBMIGRATOR_H
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#include <QStringList>
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#include <QSqlDatabase>
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#include <QObject>
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class DBMigrator : public QObject
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{
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Q_OBJECT
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private:
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QSqlDatabase *db;
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public:
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DBMigrator(QSqlDatabase &db);
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~DBMigrator();
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uint32_t currentRevision();
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void performMigrations();
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QStringList getMigrationFilenames();
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bool migrationNeeded();
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signals:
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void migrationDone(uint32_t);
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void done();
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};
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#endif // DBMIGRATOR_H
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5
shared/migrations/migrations.qrc
Fichier normal
5
shared/migrations/migrations.qrc
Fichier normal
@ -0,0 +1,5 @@
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<RCC>
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<qresource prefix="/looqs-migrations">
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<file>1.sql</file>
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</qresource>
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</RCC>
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@ -27,12 +27,18 @@ DEFINES += QT_DEPRECATED_WARNINGS
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#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
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#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
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SOURCES += sqlitesearch.cpp \
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SOURCES += sqlitesearch.cpp \
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databasefactory.cpp \
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dbmigrator.cpp \
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logger.cpp \
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looqsgeneralexception.cpp \
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looqsgeneralexception.cpp \
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common.cpp \
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common.cpp \
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looqsquery.cpp
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looqsquery.cpp
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HEADERS += sqlitesearch.h \
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HEADERS += sqlitesearch.h \
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databasefactory.h \
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dbmigrator.h \
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filedata.h \
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filedata.h \
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logger.h \
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looqsgeneralexception.h \
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looqsgeneralexception.h \
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looqsquery.h \
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looqsquery.h \
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searchresult.h \
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searchresult.h \
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@ -42,4 +48,4 @@ unix {
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target.path = /usr/lib
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target.path = /usr/lib
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INSTALLS += target
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INSTALLS += target
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}
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}
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RESOURCES = create.qrc
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RESOURCES = migrations/migrations.qrc
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