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/*
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* Copyright (C) 2015 Christian Ehringfeld <c.ehringfeld@t-online.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "entityhelper.h"
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#include "entity.h"
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#include "relation.h"
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#include "cache.h"
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using namespace CuteEntityManager;
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EntityHelper::EntityHelper() {
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}
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const QHash<QString, Relation> EntityHelper::getNonInheritedRelations(
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const Entity *entity) {
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auto relations = entity->getRelations();
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auto superObject = EntityInstanceFactory::newSuperClassInstance(entity);
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if (superObject) {
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auto superRelations = superObject->getRelations();
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for (auto i = superRelations.constBegin(); i != superRelations.constEnd(); ++i) {
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if (relations.contains(i.key())) {
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relations.remove(i.key());
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}
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}
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delete superObject;
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superObject = nullptr;
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}
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return relations;
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}
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const QList<const QMetaObject *> EntityHelper::superClasses(
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const Entity *entity, bool
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stopAtSingleTableInheritance) {
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QList<const QMetaObject *> classes = QList<const QMetaObject *>();
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auto superMetaObject = entity->metaObject()->superClass();
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if (entity->getInheritanceStrategy() == InheritanceStrategy::JOINED_TABLE) {
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Entity *e = nullptr;
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while (superMetaObject && QString(superMetaObject->className()) !=
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QString("CuteEntityManager::Entity")) {
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e = EntityInstanceFactory::createInstance(superMetaObject->className());
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if (e) {
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classes.append(superMetaObject);
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superMetaObject = superMetaObject->superClass();
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InheritanceStrategy s = e->getInheritanceStrategy();
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delete e;
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e = nullptr;
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if (stopAtSingleTableInheritance && s == InheritanceStrategy::PER_CLASS_TABLE) {
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break;
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}
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} else {
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break;
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}
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}
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}
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return classes;
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}
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const QHash<QString, QMetaProperty> EntityHelper::getMetaProperties(
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const Entity *entity) {
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return EntityHelper::getMetaProperties(entity->metaObject());
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}
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const QHash<QString, QMetaProperty> EntityHelper::getSuperMetaProperties(
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const Entity *entity) {
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auto superMetaObjectPropertyMap = QHash<QString, QMetaProperty>();
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auto superMeta = entity->metaObject()->superClass();
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if (QString(superMeta->className()) != QString("CuteEntityManager::Entity")
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&& entity->getInheritanceStrategy() == InheritanceStrategy::JOINED_TABLE) {
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for (int var = 0; var < superMeta->propertyCount(); ++var) {
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QMetaProperty prop = superMeta->property(var);
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if (prop.isReadable() && prop.isWritable()) {
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superMetaObjectPropertyMap.insert(QString(prop.name()), prop);
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}
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}
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}
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return superMetaObjectPropertyMap;
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}
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const QHash<QString, QMetaProperty> EntityHelper::getMetaProperties(
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const QMetaObject *object) {
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auto h = QHash<QString, QMetaProperty>();
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for (int var = 0; var < object->propertyCount(); ++var) {
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QMetaProperty m = object->property(var);
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if (m.isValid() && m.name() != QString("objectName")) {
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h.insert(m.name(), m);
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}
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}
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return h;
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}
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const QHash<QString, QMetaProperty> EntityHelper::getNonInheritedMetaProperties(
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const Entity *entity) {
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auto props = EntityHelper::getMetaProperties(entity);
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auto superObject = EntityInstanceFactory::newSuperClassInstance(entity);
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if (superObject) {
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auto superProps = EntityHelper::getMetaProperties(superObject);
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for (auto iterator = superProps.constBegin(); iterator != superProps.constEnd();
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++iterator) {
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if (props.contains(iterator.key())) {
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props.remove(iterator.key());
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}
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}
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delete superObject;
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superObject = nullptr;
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}
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return props;
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}
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const QHash<QString, QMetaProperty> EntityHelper::getInheritedMetaProperties(
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const Entity *entity) {
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auto props = EntityHelper::getMetaProperties(entity);
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auto superObject = EntityInstanceFactory::newSuperClassInstance(entity);
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auto wholeProperties = QHash<QString, QMetaProperty>();
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if (superObject) {
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auto superProps = EntityHelper::getMetaProperties(superObject);
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auto iterator = superProps.constBegin();
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for (auto i = props.constBegin(); i != props.constEnd(); ++i) {
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if (!superProps.contains(iterator.key())) {
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wholeProperties.insert(iterator.key(), iterator.value());
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}
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}
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delete superObject;
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superObject = nullptr;
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}
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return wholeProperties;
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}
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const QHash<Relation, QMetaProperty> EntityHelper::getRelationProperties(
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const Entity *entity) {
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auto h = QHash<Relation, QMetaProperty>();
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if(entity) {
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auto relations = entity->getRelations();
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for (int var = 0; var < entity->metaObject()->propertyCount(); ++var) {
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QMetaProperty m = entity->metaObject()->property(var);
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if (m.isValid() && relations.contains(QString(m.name()))) {
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h.insert(relations.value(m.name()), m);
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}
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}
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}
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return h;
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}
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Entity* EntityHelper::copyObject(const Entity *entity) {
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auto metaObject = entity->metaObject();
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auto newInstance = EntityInstanceFactory::createInstance(metaObject);
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if(newInstance) {
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for (int i = 0; i < metaObject->propertyCount(); ++i) {
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auto property = metaObject->property(i);
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if(property.isValid() && property.name() != entity->getPrimaryKey()) {
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property.write(newInstance, property.read(entity));
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}
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}
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}
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return newInstance;
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}
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Entity *EntityHelper::getBaseClassObject(const QSharedPointer<Entity> &entity,
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QString attributeName) {
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auto superObject = EntityInstanceFactory::createInstance(entity->metaObject());
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auto objectBefore = superObject;
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bool first = true;
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while(superObject) {
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auto props = EntityHelper::getMetaProperties(superObject);
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if(!props.contains(attributeName) ||
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superObject->getInheritanceStrategy() == InheritanceStrategy::PER_CLASS_TABLE) {
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break;
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} else if(!first) {
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delete objectBefore;
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objectBefore = nullptr;
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} else {
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first = false;
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}
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objectBefore = superObject;
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superObject = EntityInstanceFactory::newSuperClassInstance(superObject);
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}
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return objectBefore;
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}
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const char *EntityHelper::getClassname(const Entity *entity) {
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return entity->metaObject()->className();
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}
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const QString EntityHelper::getClassName(const Entity *entity) {
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return QString(entity->metaObject()->className());
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}
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void EntityHelper::addEntityToListProperty(const QSharedPointer<Entity>
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&entity, QSharedPointer<Entity> add, const QMetaProperty &property) {
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QVariant var = property.read(entity.data());
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QList<QSharedPointer<Entity>> list = (!var.isNull() && var.data() &&
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var.canConvert<QList<QVariant>>() ? EntityInstanceFactory::castQVariantList(
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var) : QList<QSharedPointer<Entity>>());
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if (!list.contains(add)) {
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list.append(add);
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entity->setListProperty(list,property);
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}
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}
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void EntityHelper::removeEntityFromListProperty(const QSharedPointer<Entity>
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&entity, QSharedPointer<Entity> remove, const QMetaProperty &property) {
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QVariant var = property.read(entity.data());
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if (!var.isNull() && var.canConvert<QList<QVariant>>()) {
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auto list = EntityInstanceFactory::castQVariantList(var);
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for (int i = 0; i < list.size(); ++i) {
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auto e = list.at(i);
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if (e->getId() == remove->getId()) {
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list.removeAt(i);
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break;
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}
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}
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entity->setListProperty(list,property);
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}
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}
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void EntityHelper::clearEntityListProperty(const QSharedPointer<Entity> &entity,
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const QMetaProperty &property) {
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QVariant var = property.read(entity.data());
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if (var.canConvert<QList<QVariant>>()) {
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auto list = EntityInstanceFactory::castQVariantList(var);
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list.clear();
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entity->setListProperty(list,property);
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}
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}
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void EntityHelper::setProperty(const QSharedPointer<Entity> &entity,
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QSharedPointer<Entity> value,
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const QMetaProperty &property) {
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if (value && value->getProperty(value->getPrimaryKey()).toLongLong()
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> -1) {
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QVariant var;
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var.setValue<QSharedPointer<Entity>>(value);
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property.write(entity.data(), var);
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}
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}
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void EntityHelper::setProperty(const QSharedPointer<Entity> &entity,
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QSharedPointer<Entity> value, const QString property) {
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auto props = EntityHelper::getMetaProperties(entity.data());
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if (props.contains(property)) {
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QVariant var;
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var.setValue<QSharedPointer<Entity>>(value);
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entity->setProperty(property, var);
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}
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}
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QMetaProperty EntityHelper::mappedProperty(const Relation &r,
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const QSharedPointer<Entity> &foreignEntity) {
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QMetaProperty prop;
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auto props = EntityHelper::getMetaProperties(foreignEntity.data());
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if (!r.getMappedBy().isEmpty() && props.contains(r.getMappedBy())) {
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prop = props.value(r.getMappedBy());
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} else {
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auto relations = foreignEntity->getRelations();
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for (auto iterator = relations.constBegin(); iterator != relations.constEnd();
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++iterator) {
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auto rel = iterator.value();
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if (rel.getMappedBy() == r.getPropertyName()) {
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prop = props.value(rel.getPropertyName());
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break;
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}
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}
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}
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return prop;
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}
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QHash<QString, QVariant> EntityHelper::getEntityAttributes(
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const QHash<QString, QMetaProperty>
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&props,
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const QSharedPointer<Entity> &entity) {
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auto map = QHash<QString, QVariant>();
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auto transientAttrs = entity->getTransientAttributes();
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auto relations = entity->getRelations();
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auto i = props.constBegin();
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while (i != props.constEnd()) {
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if (!transientAttrs.contains(i.key()) && !relations.contains(i.key())) {
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if(i.value().isEnumType()) {
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map.insert(i.key(), i.value().read(entity.data()).toInt());
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} else {
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map.insert(i.key(), i.value().read(entity.data()));
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}
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}
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++i;
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}
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return map;
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}
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