int DbMediaImageContainer::insertDataObjectToModel(const EmuFrontObject *efo)
{
- /* "CREATE TABLE IF NOT EXISTS mediaimagecontainer "
- "(id INTEGER PRIMARY KEY, "
- "fileid INTEGER REFERENCES file(id), "
- "filepathid INTEGER REFERENCES filepath(id), "
- "updatetime NUMERIC)"*/
-
const MediaImageContainer *mic
= dynamic_cast<const MediaImageContainer *>(efo);
+ // check if this media image container is already in the database
+ int fileId = -1;
+ if ((fileId = getMediaImageContainer(mic->getCheckSum())) >= 0)
+ return fileId;
+
if (!mic->getFilePath())
- // TODO: note we most surely need to catch the exception
- // in the calling code block and clean
- // all the media image and ...containers from
- // the memory!
throw new EmuFrontException("Cannot install media image "
"container to database without a file path object!");
- // Insert MediaImageContainer first as a EmuFrontFile object to file table.
- // File id is used to store the media image container instance to database,
- // file id is also the media image container id
- int fileId = DbFile::insertDataObjectToModel(mic);
-
- if (fileId < 0) {
- // TODO: note we most surely need to catch the exception
- // in the calling code block and clean
- // all the media image and ...containers from
- // the memory!
- throw new EmuFrontException(
- QString(tr("Inserting media image container %1 to file database failed"))
- .arg(mic->getName()));
- }
+ QList<MediaImage*> images = mic->getMediaImages();
+ QList<int> ids = dbMediaImage->storeMediaImages(images);
- // Insert to mediaimagecontainer table
+ if (ids.count() <= 0)
+ return -1;
+
+ /* Contained Media images successfully stored to db,
+ storing media image container also */
+
+ try {
+
+ // Insert MediaImageContainer first as a EmuFrontFile object to file table.
+
+ // File id is used to store the media image container instance to database,
+ // file id is also the media image container id
+ fileId = DbFile::insertDataObjectToModel(mic);
+
+ if (fileId < 0) {
+ // TODO: note we most surely need to catch the exception
+ // in the calling code block and clean
+ // all the media image and ...containers from
+ // the memory!
+ throw new EmuFrontException(
+ QString(tr("Inserting media image container %1 to file database failed"))
+ .arg(mic->getName()));
+ }
+
+ // Insert to mediaimagecontainer table
+
+ QSqlQuery q;
+ q.prepare("INSERT INTO mediaimagecontainer "
+ "(fileid, filepathid, updatetime) "
+ "VALUES (:fileid, :filepathid, :updatetime)");
+ q.bindValue(":fileid", fileId);
+ q.bindValue(":filepathid", mic->getFilePath()->getId());
+ q.bindValue(":updatetime", DatabaseManager::getCurrentTimeStamp());
+ if (!q.exec()){
+ DbFile::deleteDataObject(fileId);
+ throw new EmuFrontException("Failed inserting media image to database!");
+ }
+ linkMediaImagesWithContainer(fileId, ids);
+ } catch (EmuFrontException e) {
+ dbMediaImage->removeOrphanedMediaImages(ids);
+ throw e;
+ }
- QSqlQuery q;
- q.prepare("INSERT INTO mediaimagecontainer "
- "(fileid, filepathid, updatetime) "
- "VALUES (:fileid, :filepathid, :updatetime)");
- q.bindValue(":fileid", fileId);
- q.bindValue(":filepathid", mic->getFilePath()->getId());
- q.bindValue(":fileid", DatabaseManager::getCurrentTimeStamp());
- if (!q.exec())
- // TODO: failed inserting, remove orphaned media images
- // (this is actually done in the storeContainers catch block
- // but maybe it should be done here also, if this function is called independently!
- // TODO: note we most surely need to catch the exception
- // in the calling code block and clean
- // all the media image and ...containers from
- // the memory!
- throw new EmuFrontException("Failed inserting media image to database!");
return fileId;
}
return 0;
}
+/* Returns the id of a media image container with a given cheksum or -1 if not found */
int DbMediaImageContainer::getMediaImageContainer(QString checksum) const
{
// TODO
foreach(MediaImageContainer *mic, lst)
{
qDebug() << "Media image container " << mic->getName();
- QList<MediaImage*> images = mic->getMediaImages();
-
- /* If media image container is already in the db, continue */
- if (getMediaImageContainer(mic->getCheckSum()) >= 0)
- continue;
-
- // this is a new media image container, lets build a list
- // of media image id's for this container
- QList<int> ids = dbMediaImage->storeMediaImages(images);
-
- if (ids.count() > 0)
- {
- try {
- // mediaimagecontainer table: id, fileid, filepathid, updatetime
-
- // insert the media image container file to file table
- int micFileId = insertDataObjectToModel(mic);
- if (micFileId < 0) {
- // TODO: note we most surely need to catch the exception
- // in the calling code block and clean
- // all the media image and ...containers from
- // the memory!
- throw new EmuFrontException(
- QString(tr("Inserting media image container %1 to file database failed"))
- .arg(mic->getName()));
- }
- // link all the media image ids in list to media image container id
- linkMediaImagesWithContainer(micFileId, ids);
- } catch (EmuFrontException e) {
- // need to remove the media images without media image container in list 'ids'
- // TODO: clean
- // all the media image and ...containers from
- // the memory! (maybe throw another exception on calling code block for this)
-
- dbMediaImage->removeOrphanedMediaImages(ids);
- }
- }
+ int micFileId = insertDataObjectToModel(mic);
}
}
void DbMediaImageContainer::linkMediaImagesWithContainer(int micId, QList<int> miIds)
{
- // TODO
+ if (micId < 0 || miIds.count() <= 0)
+ return;
+
+ QSqlQuery q;
+ q.prepare("INSERT INTO mediaimagecontainer_mediaimage "
+ "(mediaimagecontainerid, mediaimageid) "
+ "VALUES (:micid, :miid) ");
+ q.bindValue(":micid", micId);
+
+ foreach(int miid, miIds) {
+ q.bindValue(":miid", miid);
+ if (!q.exec()) {
+ throw new EmuFrontException(QString("Failed linking media "
+ "image container %1 to a media image %2").arg(micId).arg(miid));
+ }
+ }
}
projects / emufront / blobdiff