1 files changed, 60 insertions, 0 deletions
diff --git a/fbreader/src/database/booksdb/runnables/DeleteFileEntriesRunnable.cpp b/fbreader/src/database/booksdb/runnables/DeleteFileEntriesRunnable.cpp
new file mode 100644
index 0000000..065a4c2
--- /dev/null
+++ b/fbreader/src/database/booksdb/runnables/DeleteFileEntriesRunnable.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2009-2012 Geometer Plus <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include "../DBRunnables.h"
+#include "../../sqldb/implsqlite/SQLiteFactory.h"
+
+DeleteFileEntriesRunnable::DeleteFileEntriesRunnable(DBConnection &connection) {
+	myDeleteFileEntries = SQLiteFactory::createCommand(BooksDBQuery::DELETE_FILE_ENTRIES, connection, "@file_id", DBValue::DBINT);
+	myLoadFileEntryIds  = SQLiteFactory::createCommand(BooksDBQuery::LOAD_FILE_ENTRY_IDS, connection, "@file_id", DBValue::DBINT);
+}
+
+bool DeleteFileEntriesRunnable::run() {
+	return doDelete(myFileId);
+}
+
+bool DeleteFileEntriesRunnable::doDelete(int fileId) {
+	(DBIntValue &) *myLoadFileEntryIds->parameter("@file_id").value() = fileId;
+	shared_ptr<DBDataReader> reader = myLoadFileEntryIds->executeReader();
+	if (reader.isNull()) {
+		return false;
+	}
+
+	std::vector<int> fileIds;
+	while (reader->next()) {
+		if (reader->type(0) != DBValue::DBINT /* file_id  */ ) {
+			reader->close();
+			return false;
+		}
+		fileIds.push_back(reader->intValue(0));
+	}
+	reader->close();
+
+	if (fileIds.empty()) {
+		return true;
+	}
+	for (std::vector<int>::const_iterator it = fileIds.begin(); it != fileIds.end(); ++it) {
+		if (!doDelete(*it)) {
+			return false;
+		}
+	}
+	(DBIntValue &) *myDeleteFileEntries->parameter("@file_id").value() = fileId;
+	return myDeleteFileEntries->execute();
+}
+