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root/src/entitymanager.cpp @ 3bfe1c1b

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/*
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* Copyright (C) 2015 Christian Ehringfeld <c.ehringfeld@t-online.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
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#include "entitymanager.h"
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#include "enums/databasetype.h"
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#include "databasemigration.h"
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using namespace CuteEntityManager;
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QStringList EntityManager::connectionNames = QStringList();

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QStringList EntityManager::getConnectionNames() {
return EntityManager::connectionNames;
}

EntityManager::EntityManager(QSqlDatabase database) : QObject() {
auto db = new Database(database);
this->db = QSharedPointer<Database>(db);
this->init();
}

EntityManager::EntityManager(const QString &databaseType, QString databasename ,
QString hostname,
QString username,
QString password, QString port) : QObject() {
auto db = new Database(databaseType, this->createConnection(), hostname,
databasename, username,
password,
port.toInt());
this->db = QSharedPointer<Database>(db);
this->init();
}

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void EntityManager::init() {
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auto schema = Database::getSchema(Database::getDatabaseType(
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this->db.data()->getDatabase().driverName()), this->db);
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this->schema = QSharedPointer<Schema>(schema);
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this->schema.data()->setTables(this->schema.data()->getTableSchemas());
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}

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EntityManager::~EntityManager() {
EntityManager::removeConnectionName(this->db->getConnectionName());
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}

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bool EntityManager::startup(QString version, QStringList toInitialize) {
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DatabaseMigration *dbm = new DatabaseMigration();
QSharedPointer<Entity> ptrDbm = QSharedPointer<Entity>(dbm);
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QHash<QString, QVariant> map = QHash<QString, QVariant>();
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bool ok = true;
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map.insert("version", version);
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if (this->findAllByAttributes(map, dbm->getTablename()).isEmpty()) {
for (int var = 0; var < toInitialize.size(); ++var) {
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if (ok) {
QString c = toInitialize.at(var);
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ok = this->createTable(QSharedPointer<Entity>
(EntityInstanceFactory::createInstance(c)));
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} else {
break;
}
}
if (ok) {
dbm->setVersion(version);
dbm->setApplyTime(QDateTime::currentDateTime());
this->create(ptrDbm);
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}
}
delete dbm;
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return ok;
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}

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bool EntityManager::executeQuery(const QString &query) {
return this->db.data()->transaction(query);
}

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bool EntityManager::checkTable(const QSharedPointer<Entity> &entity) {
bool rc = true;
if (!this->schema.data()->containsTable(entity.data()->getTablename())) {
if (this->schema.data()->getQueryBuilder().data()->createTable(entity)) {
this->schema.data()->getTableSchema(entity.data()->getTablename(), true);
rc = this->schema.data()->getTables().contains(entity.data()->getTablename());
}
}
return rc;
}
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QSharedPointer<Database> EntityManager::getDb() const {
return db;
}

void EntityManager::setDb(const QSharedPointer<Database> &value) {
db = value;
}

QSharedPointer<Schema> EntityManager::getSchema() const {
return schema;
}

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void EntityManager::refresh(QSharedPointer<Entity> &entity) {
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entity = this->findById(entity.data()->property(
entity.data()->getPrimaryKey()).toLongLong(),
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QString(entity.data()->getClassname()));
}

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void EntityManager::setSchema(const QSharedPointer<Schema> &value) {
schema = value;
}

QString EntityManager::createConnection() {
QStringList l = EntityManager::getConnectionNames();
QString conName = "";
bool ok = false;
qint16 i = 0;
while (!ok) {
if (l.contains("con" + QString::number(i))) {
++i;
} else {
l.append("con" + QString::number(i));
ok = true;
conName = "con" + QString::number(i);
EntityManager::setConnectionNames(l);
}
}
return conName;
}

void EntityManager::removeConnectionName(const QString &name) {
EntityManager::connectionNames.removeOne(name);
}

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QSharedPointer<Entity> EntityManager::findById(const qint64 &id,
QSharedPointer<Entity> &e,
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const bool refresh) {
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QSharedPointer<Entity> r;
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if (!e.isNull()) {
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if (refresh || !(r = this->cache.get(id, QString(e.data()->getClassname())))) {
e.data()->setId(id);
auto map = this->findByPk(id, e);
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r = this->convert(map, e->getClassname(), refresh);
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}
}
return r;
}

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QSharedPointer<Entity> EntityManager::findById(const qint64 &id,
const QString &classname) {
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QSharedPointer<Entity> e = QSharedPointer<Entity>
(EntityInstanceFactory::createInstance(classname));
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return this->findById(id, e);
}

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QSharedPointer<Entity> EntityManager::convert(const QHash<QString, QVariant>
&map,
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const char *classname, const bool refresh) {
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auto ptr = QSharedPointer<Entity>(EntityInstanceFactory::createInstance(
classname, map));
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this->resolveRelations(ptr, map, refresh);
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this->cache.insert(ptr);
return ptr;
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}

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QList<QSharedPointer<Entity> > EntityManager::convert(
QList<QHash<QString, QVariant> > maps,
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const char *classname, const bool refresh) {
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auto list = QList<QSharedPointer<Entity> >();
for (int var = 0; var < maps.size(); ++var) {
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auto ptr = this->convert(maps.at(var), classname, refresh);
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list.append(ptr);
this->cache.insert(ptr);
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}
return list;
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}

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void EntityManager::manyToOne(const QSharedPointer<Entity> &entity,
const QVariant &id,
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const QMetaProperty &property, const bool refresh) {
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qint64 convertedId = -1;
bool ok = false;
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if ((convertedId == id.toLongLong(&ok)) && ok && convertedId > -1) {
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QString className = EntityInstanceFactory::extractEntityType(
property.typeName());
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QSharedPointer<Entity> ptr = QSharedPointer<Entity>();
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if (refresh || !(this->cache.contains(convertedId, className)
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&& (ptr = this->cache.get(convertedId, className)) && ptr)) {
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ptr = this->findById(convertedId, className);
}
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this->setProperty(entity, ptr, property);
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}
}

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void EntityManager::oneToMany(const QSharedPointer<Entity> &entity,
const Relation &r,
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const QMetaProperty &property, const bool refresh) {
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if (entity.data() && entity.data()->getId() > -1) {
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Entity *e = EntityInstanceFactory::createInstance(
EntityInstanceFactory::extractEntityType(
property.typeName()));
QSqlQuery q = this->schema.data()->getQueryBuilder().data()->oneToMany(
e->getTablename(),
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this->schema.data()->getQueryBuilder().data()->generateColumnNameID(
r.getMappedBy()), entity.data()->getId());
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auto listMap = this->convertQueryResult(q);
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auto entities = this->convert(listMap, e->getClassname(), refresh);
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delete e;
this->setListProperty(entity, entities, property);
}
}
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void EntityManager::oneToOne(const QSharedPointer<Entity> &entity,
const Relation &r,
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const QMetaProperty &property, const bool refresh,
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const QVariant &id) {
if (r.getMappedBy().isEmpty()) {
this->manyToOne(entity, id, property);
} else {
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Entity *e = EntityInstanceFactory::createInstance(
EntityInstanceFactory::extractEntityType(
property.typeName()));
QSqlQuery q = this->schema.data()->getQueryBuilder().data()->oneToMany(
e->getTablename(),
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this->schema.data()->getQueryBuilder().data()->generateColumnNameID(
r.getMappedBy()),
entity.data()->property(entity.data()->getPrimaryKey()).toLongLong(), 1);
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auto listMap = this->convertQueryResult(q);
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auto entities = this->convert(listMap, e->getClassname(), refresh);
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if (!entities.isEmpty()) {
QSharedPointer<Entity> ptr = entities.at(0);
this->setProperty(entity, ptr, property);
}
delete e;
}
}

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bool EntityManager::canPersistRelation(const Relation &relation,
const RelationType &r, const QVariant &var) const {
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return relation.getType() == r
&& var.canConvert<QList<QSharedPointer<Entity>>>();
}

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void EntityManager::setListProperty(const QSharedPointer<Entity> &entity,
QList<QSharedPointer<Entity> > &list,
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const QMetaProperty &property) const {
QVariant var;
var.setValue<QList<QSharedPointer<Entity>>>(list);
property.write(entity.data(), var);
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}

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void EntityManager::addEntityToListProperty(const QSharedPointer<Entity>
&entity, QSharedPointer<Entity> add, const QMetaProperty &property) {
QVariant var = property.read(entity.data());
if (!var.isNull() && var.canConvert<QList<QSharedPointer<Entity>>>()) {
QList<QSharedPointer<Entity>> list = var.value<QList<QSharedPointer<Entity>>>();
if (!list.contains(add)) {
list.append(add);
var.setValue<QList<QSharedPointer<Entity>>>(list);
property.write(entity.data(), var);
}
}
}

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void EntityManager::setProperty(const QSharedPointer<Entity> &entiy,
QSharedPointer<Entity> value,
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const QMetaProperty &property) const {
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if (value && value.data()->property(value.data()->getPrimaryKey()).toLongLong()
> -1) {
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property.write(entiy.data(), QVariant(value));
}
}

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void EntityManager::saveRelations(const QSharedPointer<Entity> &entity) {
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auto relations = entity.data()->getRelationProperties();
auto iterator = relations.constBegin();
while (iterator != relations.constEnd()) {
const Relation r = iterator.key();
auto var = iterator.value().read(entity.data());
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if (r.getType() == MANY_TO_ONE && !var.isNull()
&& var.canConvert<QSharedPointer<Entity>>()) {
auto e = qvariant_cast<QSharedPointer<Entity>>(var);
if (this->shouldBeSaved(e, r)) {
this->save(e);
}
} else if (this->canPersistRelation(r, MANY_TO_MANY, var)) {
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this->persistManyToMany(entity, r, var);
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} else if (this->canPersistRelation(r, ONE_TO_MANY, var)) {
QList<QSharedPointer<Entity>> list =
qvariant_cast<QList<QSharedPointer<Entity>>>(var);
for (int var = 0; var < list.size(); ++var) {
auto entity = list.at(var);
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if (this->shouldBeSaved(entity, r)) {
this->save(entity);
}
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}
} else if (r.getType() == ONE_TO_ONE && !r.getMappedBy().isEmpty()
&& var.canConvert<QSharedPointer<Entity>>()) {
auto entity = qvariant_cast<QSharedPointer<Entity>>(var);
this->save(entity);
}
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++iterator;
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}
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}

void EntityManager::persistMappedByRelation(const QList<QSharedPointer<Entity> >
&list, QSqlQuery &q, const QSharedPointer<Entity> &entity, const Relation &r,
const QString &tblName) {
q.clear();
QSharedPointer<Entity> ptr;
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QList<QSharedPointer<Entity>> saved = r.getCascadeType().contains(ALL)
|| r.getCascadeType().contains(MERGE)
|| r.getCascadeType().contains(PERSIST) ? this->saveRelationEntities(list,
r) : list;
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auto builder = this->schema.data()->getQueryBuilder();
q = builder.data()->manyToManyInsert(tblName,
builder.data()->generateManyToManyColumnName(entity),
builder.data()->generateManyToManyColumnName(ptr));
q.bindValue(0, entity.data()->getId());
QMetaProperty prop;
bool first = true;
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for (int var = 0; var < saved.size(); ++var) {
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ptr = list.at(var);
if (first && !r.getMappedBy().isEmpty()) {
auto props = ptr.data()->getMetaProperties();
if (props.contains(r.getMappedBy())) {
prop = props.value(r.getMappedBy());
}
}
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if (ptr.data()->property(ptr.data()->getPrimaryKey()).toLongLong() > -1) {
q.bindValue(1, ptr.data()->property(ptr.data()->getPrimaryKey()));
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q.exec();
if (prop.isValid()) {
this->addEntityToListProperty(entity, ptr, prop);
}
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}
}
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}
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bool EntityManager::shouldBeSaved(QSharedPointer<Entity> &entity,
const Relation &r) {
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return entity && (r.getCascadeType().contains(ALL)
|| (entity.data()->property(entity.data()->getPrimaryKey()) > -1
&& r.getCascadeType().contains(MERGE))
|| (entity.data()->property(entity.data()->getPrimaryKey()) <= -1
&& r.getCascadeType().contains(PERSIST)));
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}

void EntityManager::removeRelations(const QSharedPointer<Entity> &entity) {
auto props = entity.data()->getRelationProperties();
auto iterator = props.constBegin();
while (iterator != props.constEnd()) {
const Relation r = iterator.key();
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auto property = iterator.value();
auto var = property.read(entity.data());
if (r.getType() == MANY_TO_MANY) {
this->removeManyToManyEntityList(entity, r, var);
} else if (r.getType() == ONE_TO_MANY) {
if (r.getCascadeType().contains(REMOVE) || r.getCascadeType().contains(ALL)) {
this->removeEntityList(var);
} else {
this->setNullOneToManyRelation(var, r);
}
} else if (r.getType() == MANY_TO_ONE || r.getType() == MANY_TO_ONE) {
this->setNullEntityPropertyRelation(var, r);
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}
++iterator;
}
}

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void EntityManager::setNullOneToManyRelation(QVariant &var, const Relation &r) {
if (!r.getMappedBy().isEmpty()) {
if (!var.isNull() && var.canConvert<QList<QSharedPointer<Entity>>>()) {
auto list = qvariant_cast<QList<QSharedPointer<Entity>>>(var);
if (!list.isEmpty()) {
auto metas = list.at(0).data()->getMetaProperties();
if (metas.contains(r.getMappedBy())) {
for (int var = 0; var < list.size(); ++var) {
auto entity = list.at(var);
this->setProperty(entity, QSharedPointer<Entity>(),
metas.value(r.getMappedBy()));
this->save(entity);
}
}
}
}
}
}

void EntityManager::setNullEntityPropertyRelation(QVariant &var,
const Relation &r) {
if (r.getCascadeType().contains(REMOVE) || r.getCascadeType().contains(ALL)) {
this->removeEntity(var);
} else if (!r.getMappedBy().isEmpty()) {
if (!var.isNull() && var.canConvert<QSharedPointer<Entity>>()) {
auto e = qvariant_cast<QSharedPointer<Entity>>(var);
auto metas = e.data()->getMetaProperties();
if (metas.contains(r.getMappedBy())) {
this->setProperty(e, QSharedPointer<Entity>(), metas.value(r.getMappedBy()));
this->save(e);
}
}
}
}

void EntityManager::removeEntity(QVariant &var) {
if (!var.isNull() && var.canConvert<QSharedPointer<Entity>>()) {
auto e = qvariant_cast<QSharedPointer<Entity>>(var);
this->remove(e);
}
}

void EntityManager::removeEntityList(QVariant &var) {
if (var.canConvert<QList<QSharedPointer<Entity>>>()) {
QList<QSharedPointer<Entity>> list =
qvariant_cast<QList<QSharedPointer<Entity>>>(var);
for (int var = 0; var < list.size(); ++var) {
auto entity = list.at(var);
this->remove(entity);
}
}
}

void EntityManager::removeManyToManyEntityList(const QSharedPointer<Entity> &e,
const Relation &r,
QVariant &var) {
if (var.canConvert<QList<QSharedPointer<Entity>>>()) {
QList<QSharedPointer<Entity>> list =
qvariant_cast<QList<QSharedPointer<Entity>>>(var);
if (!list.isEmpty()) {
auto builder = this->schema.data()->getQueryBuilder();
auto ptr = list.at(0);
QString tblName = builder.data()->generateManyToManyTableName(e, ptr);
if (this->schema.data()->getTables().contains(tblName)) {
QSqlQuery q = builder.data()->manyToManyDelete(
tblName, builder.data()->generateManyToManyColumnName(e),
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e.data()->property(e.data()->getPrimaryKey()).toLongLong());
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bool refresh = r.getCascadeType().contains(REFRESH)
|| r.getCascadeType().contains(ALL);
bool remove = r.getCascadeType().contains(REMOVE)
|| r.getCascadeType().contains(ALL);
if (q.exec()) {
for (int var = 0; var < list.size(); ++var) {
auto entity = list.at(var);
if (remove) {
this->remove(entity);
} else if (refresh) {
/**
not really with good performance, alternatively iterate over relation attribute and delete pointer from list
**/
this->refresh(entity);
}
}
}
}
}
}
}

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QList<QSharedPointer<Entity>> EntityManager::saveRelationEntities(
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const QList<QSharedPointer<Entity> > &list, const Relation &r) {
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QList<QSharedPointer<Entity>> saved = QList<QSharedPointer<Entity>>();
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QSharedPointer<Entity> ptr;
for (int var = 0; var < list.size(); ++var) {
ptr = list.at(var);
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if (this->shouldBeSaved(ptr, r) && this->save(ptr)) {
saved.append(ptr);
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}
}
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return saved;
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}
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void EntityManager::persistManyToMany(const QSharedPointer<Entity> &entity,
const Relation &r, const QVariant &property) {
QList<QSharedPointer<Entity>> list =
qvariant_cast<QList<QSharedPointer<Entity>>>(property);
if (!list.isEmpty()) {
auto ptr = list.at(0);
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auto builder = this->schema.data()->getQueryBuilder();
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QString tblName = builder.data()->generateManyToManyTableName(entity, ptr);
if (this->schema.data()->getTables().contains(tblName)) {
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QSqlQuery q = builder.data()->manyToManyDelete(
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tblName, builder.data()->generateManyToManyColumnName(entity),
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entity.data()->property(entity.data()->getPrimaryKey()).toLongLong());
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if (this->db.data()->transaction(q)) {
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this->persistMappedByRelation(list, q, entity, r, tblName);
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}
} else {
qDebug() << "MANY_TO_MANY Table " << tblName << " not exists";
}
}
}



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void EntityManager::manyToMany(const QSharedPointer<Entity> &entity,
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const QMetaProperty &property, const bool refresh) {
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Entity *secEntity = EntityInstanceFactory::createInstance(
EntityInstanceFactory::extractEntityType(
QString(
property.typeName())));
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auto builder = this->schema.data()->getQueryBuilder();
if (secEntity) {
QSharedPointer<Entity> secEntityPtr = QSharedPointer<Entity>(secEntity);
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QString tblName = builder.data()->generateManyToManyTableName(entity,
secEntityPtr);
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/**
* maybe it would be better, to fetch first the ids, look up cache and then request missing entities
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* with this it would be also possible to respect cascade type
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*/
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if (this->schema.data()->getTables().contains(tblName)) {
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QSqlQuery q = builder.data()->manyToMany(tblName,
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builder.data()->generateManyToManyColumnName(entity),
entity.data()->property(entity.data()->getPrimaryKey()).toLongLong(),
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builder.data()->generateManyToManyColumnName(secEntityPtr),
secEntityPtr.data()->getTablename());
auto listMap = this->convertQueryResult(q);
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auto entities = this->convert(listMap, entity.data()->getClassname(), refresh);
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this->setListProperty(entity, entities, property);
} else {
qDebug() << "MANY_TO_MANY Table " << tblName << " not exists";
}
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}
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}

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QList<QSharedPointer<Entity> > EntityManager::findEntityByAttributes(
const QSharedPointer<Entity>
&entity,
bool ignoreID) {
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auto maps = this->findAllByAttributes(entity, ignoreID);
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return this->convert(maps, entity.data()->getClassname());
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}

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/**
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* @todo should be an insert statement with many values
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* @brief EntityManager::create
* @param entities
* @return
*/
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bool EntityManager::create(QList<QSharedPointer<Entity> > entities,
const bool persistRelations) {
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bool ok = true;
foreach (QSharedPointer<Entity> ent, entities) {
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ok = this->create(ent, persistRelations);
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if (!ok) {
break;
}
}
return ok;
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}

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bool EntityManager::create(QSharedPointer<Entity> &entity,
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const bool persistRelations, const bool checkDuplicate) {
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bool rc = false;
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if (this->checkTable(entity) && !(checkDuplicate && this->count(entity) == 0)) {
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QList<QSqlQuery> q = this->schema.data()->getQueryBuilder().data()->create(
entity);
this->db->startTransaction();
bool first = true;
for (int var = 0; var < q.size(); ++var) {
auto query = q.at(var);
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rc = this->db.data()->exec(query);
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if (!rc) {
qDebug() << "Query failed:" << query.lastError().text();
break;
}
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if (first) {
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entity.data()->setProperty(
entity.data()->getPrimaryKey().toLatin1().constData(), query.lastInsertId());
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first = false;
}
}
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if (!rc || !this->db->commitTransaction()) {
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this->db->rollbackTransaction();
entity.data()->setId(-1);
rc = false;
} else {
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if (persistRelations) {
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this->saveRelations(entity);
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}
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this->cache.insert(entity);
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rc = true;
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}
}
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return rc;
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}
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bool EntityManager::merge(QSharedPointer<Entity> &entity, bool withRelations) {
if (entity->getId() > -1 && this->count(entity) == 1) {
this->db->startTransaction();
QList<QSqlQuery> q = this->schema.data()->getQueryBuilder().data()->merge(
entity);
bool ok = true;
for (int var = 0; var < q.size(); ++var) {
auto query = q.at(var);
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ok = this->db.data()->exec(query);
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if (!ok) {
qDebug() << query.lastError().text();
break;
}
}
if (!ok || !this->db->commitTransaction()) {
this->db->rollbackTransaction();
return false;
} else if (ok && withRelations) {
this->saveRelations(entity);
}
}
return false;
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}
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QHash<QString, QVariant> EntityManager::findByPk(qint64 id,
const QSharedPointer<Entity>
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&e) {
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QSqlQuery q = this->schema.data()->getQueryBuilder().data()->find(id, e, 0,
e.data()->getPrimaryKey());
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auto listMap = this->convertQueryResult(q);
if (!listMap.isEmpty()) {
return listMap.at(0);
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}
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return QHash<QString, QVariant>();
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}

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QList<QHash<QString, QVariant> > EntityManager::findAllByAttributes(
const QSharedPointer<Entity>
&entity,
bool ignoreID) {
QSqlQuery q = this->schema.data()->getQueryBuilder().data()->findByAttributes(
entity, ignoreID);
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return this->convertQueryResult(q);
}

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QList<QHash <QString, QVariant> > EntityManager::findAllByAttributes(
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const QHash<QString, QVariant> &m, const QString &tblname, bool ignoreID) {
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QSqlQuery q = this->schema.data()->getQueryBuilder().data()->findByAttributes(m,
tblname, ignoreID);
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return this->convertQueryResult(q);
}

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QList<QHash<QString, QVariant> > EntityManager::convertQueryResult(
QSqlQuery &q) {
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QList<QHash <QString, QVariant> > listmap = QList<QHash <QString, QVariant> >();
this->db->select(q);
QSqlRecord rec = q.record();
QStringList l = QStringList();
qint16 field_count = rec.count();
for (int var = 0; var < field_count; ++var) {
l.append(rec.fieldName(var));
}
QHash<QString, QVariant> map = QHash<QString, QVariant>();
while (q.next()) {
for (int var = 0; var < field_count; ++var) {
map.insert(l.at(var), q.value(rec.indexOf(l.at(var))));
}
listmap.append(map);
}
return listmap;
}

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QList<QHash <QString, QVariant> > EntityManager::findAll(
const QSharedPointer<Entity> &e) {
QSqlQuery q = this->schema.data()->getQueryBuilder().data()->findAll(e);
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return this->convertQueryResult(q);
}
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void EntityManager::resolveRelations(const QSharedPointer<Entity> &entity,
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const QHash<QString, QVariant> &map, const bool refresh) {
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auto props = entity.data()->getRelationProperties();
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auto iterator = props.constBegin();
while (iterator != props.constEnd()) {
const Relation r = iterator.key();
const QMetaProperty property = iterator.value();
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switch (r.getType()) {
case MANY_TO_ONE:
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if (map.contains(
this->schema.data()->getQueryBuilder().data()->generateColumnNameID(
r.getPropertyName()))) {
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this->manyToOne(entity, property.read(entity.data()), property, refresh);
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}
break;
case MANY_TO_MANY:
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this->manyToMany(entity, property, refresh);
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break;
case ONE_TO_MANY:
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this->oneToMany(entity, r, property, refresh);
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break;
case ONE_TO_ONE:
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this->oneToOne(entity, r, property, refresh, property.read(entity.data()));
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break;
}
++iterator;
}
}

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bool EntityManager::save(QSharedPointer<Entity> &entity,
const bool persistRelations) {
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if (entity.data()->property(entity.data()->getPrimaryKey()) > -1) {
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return this->merge(entity, persistRelations);
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} else {
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return this->create(entity, persistRelations);
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}
}

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qint64 EntityManager::findId(QSharedPointer<Entity> &entity) {
qint64 r = -1;
QSqlQuery q = this->schema.data()->getQueryBuilder().data()->findId(entity);
this->db->select(q);
if (q.next()) {
r = q.value(0).toLongLong();
}
return r;
}

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bool EntityManager::remove(QSharedPointer<Entity> &entity) {
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bool rc = false;
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this->db->startTransaction();
this->removeRelations(entity);
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auto queries = this->schema.data()->getQueryBuilder().data()->remove(entity);
bool ok = true;
for (int var = 0; var < queries.size(); ++var) {
auto q = queries.at(var);
if (!q.exec()) {
this->db->rollbackTransaction();
qDebug() << "Remove transaction rolled back";
ok = false;
break;
}
}
if (ok && this->db->commitTransaction()) {
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this->cache.remove(entity);
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entity.clear();
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rc = true;
}
return rc;
}
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bool EntityManager::removeAll(QString tblname) {
return this->schema.data()->getQueryBuilder().data()->removeAll(tblname).exec();
}

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bool EntityManager::createTable(const QSharedPointer<Entity> &entity) {
return this->schema.data()->getQueryBuilder().data()->createTable(entity);
}

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qint8 EntityManager::count(const QSharedPointer<Entity> &entity,
bool ignoreID) {
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qint8 rc = -1;
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QSqlQuery q = this->schema.data()->getQueryBuilder().data()->count(entity,
ignoreID);
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this->db->select(q);
if (q.next()) {
rc = q.value(0).toInt();
}
return rc;
}

qint8 EntityManager::count(const QString &tableName) {
qint8 rc = -1;
QSqlQuery q = this->schema.data()->getQueryBuilder().data()->count(tableName);
this->db->select(q);
if (q.next()) {
rc = q.value(0).toInt();
}
return rc;
}

586bb527 Christian Ehringfeld
void EntityManager::setConnectionNames(QStringList list) {
EntityManager::connectionNames = list;
}