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root/src/attributeresolver.cpp @ c6e41b5c
| dbd41a3a | Christian Ehringfeld | #include "attributeresolver.h"
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#include "entityhelper.h"
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#include "querybuilder.h"
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#include <QDebug>
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using namespace CuteEntityManager;
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AttributeResolver::AttributeResolver(QSharedPointer<QueryBuilder> queryBuilder) {
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this->qb = queryBuilder;
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}
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AttributeResolver::~AttributeResolver() {
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this->qb = QSharedPointer<QueryBuilder>(nullptr);
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if(!this->attributes.isEmpty()) {
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QMutableHashIterator<QString, QHash<QString, Attribute*>> i(this->attributes);
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while(i.hasNext()) {
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i.next();
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auto embeddedHash = i.value();
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QMutableHashIterator<QString, Attribute*> i2(embeddedHash);
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while(i2.hasNext()) {
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i2.next();
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auto attr = i2.value();
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delete attr;
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i2.remove();
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}
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i.remove();
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}
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}
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}
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QHash<QString, QHash<QString, Attribute *>> AttributeResolver::getAttributes() const {
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return attributes;
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}
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void AttributeResolver::setAttributes(const QHash<QString, QHash<QString, Attribute*>>
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&value) {
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attributes = value;
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}
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Attribute *AttributeResolver::resolveManyToManyAttribute(const QSharedPointer<Entity> &e,
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const QString &attr, const Relation &r, const QSharedPointer<Entity> &target) {
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auto ptr = e;
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QString attributeName = r.getPropertyName();
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QString foreignColumnName = target->getTablename();
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auto baseObj = EntityHelper::getBaseClassObject(e, attributeName);
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Entity* foreignBaseObj = target.data();
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if (!r.getMappedBy().isEmpty()) {
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ptr = target;
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attributeName = r.getMappedBy();
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foreignBaseObj = EntityHelper::getBaseClassObject(ptr, attributeName);
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foreignColumnName = foreignBaseObj->getTablename();
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}
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Attribute *attrObj = new Attribute(attr,
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this->qb->generateColumnNameID(baseObj->getTablename()),
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baseObj->getTablename(), e->metaObject());
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this->resolveInheritance(e, attrObj);
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attrObj->setRelation(foreignBaseObj->getTablename(), target->metaObject(), r,
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this->qb->generateManyToManyTableName((r.getMappedBy().isEmpty() ? baseObj->getTablename()
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: foreignBaseObj->getTablename()), attributeName),
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this->qb->generateColumnNameID(foreignColumnName));
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delete baseObj;
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if(foreignBaseObj != target.data()) {
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delete foreignBaseObj;
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}
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return attrObj;
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}
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Attribute *AttributeResolver::resolveManyToOneAttribute(const QSharedPointer<Entity> &e,
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const QString &attr, const Relation &r, const QSharedPointer<Entity> &target) {
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Q_UNUSED(r);
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auto obj = EntityHelper::getBaseClassObject(e, attr);
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Attribute *attrObj = new Attribute(attr,
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this->qb->generateColumnNameID(attr),
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e->getTablename(), e->metaObject());
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this->resolveInheritance(e, attrObj);
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attrObj->setRelation(target->getTablename(), target->metaObject(), r, "", "id");
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delete obj;
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return attrObj;
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}
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Attribute *AttributeResolver::resolveOneToManyAttribute(const QSharedPointer<Entity> &e,
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const QString &attr, const Relation &r, const QSharedPointer<Entity> &target) {
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auto obj = EntityHelper::getBaseClassObject(e, attr);
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Attribute *attrObj = new Attribute(attr, "id",
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e->getTablename(), e->metaObject());
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this->resolveInheritance(e, attrObj);
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attrObj->setRelation(target->getTablename(), target->metaObject(), r, "",
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this->qb->generateColumnNameID(r.getMappedBy()));
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delete obj;
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return attrObj;
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}
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Attribute *AttributeResolver::resolveNonRelatedAttribute(const QSharedPointer<Entity> &e,
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const QString &attr) {
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Attribute *obj = new Attribute(attr, attr, e->getTablename(), e->metaObject());
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this->resolveInheritance(e, obj);
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return obj;
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}
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const QMetaObject *AttributeResolver::resolveInheritance(const QSharedPointer<Entity> &e,
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Attribute *&attribute) {
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auto obj = EntityHelper::getBaseClassObject(e, attribute->getName());
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if(obj && obj->getTablename() != e->getTablename()) {
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attribute->setInheritance(obj->getTablename(), obj->metaObject());
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}
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return obj->metaObject();
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}
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void AttributeResolver::addAttribute(const QString &className, Attribute *&attr) {
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auto attrs = this->attributes.value(className);
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attrs.insert(attr->getName(), attr);
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this->attributes.insert(className, attrs);
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}
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Attribute *AttributeResolver::resolveExplicitAttribute(const QSharedPointer<Entity>
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&classObj, const QString &attribute, QSharedPointer<Entity> related) {
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Attribute* a = nullptr;
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if(classObj->getRelations().contains(attribute)) {
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auto relation = classObj->getRelations().value(attribute);
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if(relation.getType() == RelationType::MANY_TO_MANY) {
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a = this->resolveManyToManyAttribute(classObj, attribute, relation, related);
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} else if(relation.getType() == RelationType::MANY_TO_ONE ||
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(relation.getType() == RelationType::ONE_TO_ONE && relation.getMappedBy().isEmpty())) {
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a = this->resolveManyToOneAttribute(classObj, attribute, relation, related);
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} else {
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a = this->resolveOneToManyAttribute(classObj, attribute, relation, related);
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}
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} else {
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a = this->resolveNonRelatedAttribute(classObj, attribute);
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}
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return a;
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}
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QSharedPointer<QueryBuilder> AttributeResolver::getQb() const {
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return qb;
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}
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bool AttributeResolver::containsAttribute(const QString &className,
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const QString &attribute) const {
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bool r = false;
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auto attributes = this->getAttributes();
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if(!this->attributes.isEmpty() && attributes.contains(className) &&
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!attributes.value(className).isEmpty() &&
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attributes.value(className).contains(attribute)) {
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r = true;
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}
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return r;
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}
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Attribute *AttributeResolver::resolveAttribute(const QString &className,
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const QString &attribute, const QString related) {
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Attribute *attr = nullptr;
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if(!className.isEmpty()) {
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if(this->containsAttribute(className, attribute)) {
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attr = this->attributes.value(className).value(attribute);
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} else {
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QSharedPointer<Entity> e = QSharedPointer<Entity>(EntityInstanceFactory::createInstance(
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className));
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QSharedPointer<Entity> rel = QSharedPointer<Entity>(EntityInstanceFactory::createInstance(
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related));
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attr = this->resolveExplicitAttribute(e, attribute, rel);
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this->addAttribute(className, attr);
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}
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}
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return attr;
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}
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