Allow clients to request a temporary file for BLOB properties

4 files changed, 24 insertions, 2 deletions

diff --git a/common/definitions.cpp b/common/definitions.cpp
index daf354c..101279e 100644
--- a/common/definitions.cpp
+++ b/common/definitions.cpp
@@ -21,12 +21,22 @@
 #include "definitions.h"
 
 #include <QStandardPaths>
+#include <QDir>
 
 QString Sink::storageLocation()
 {
     return QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + "/sink/storage";
 }
 
+QString Sink::temporaryFileLocation()
+{
+    auto path = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + "/sink/temporaryFiles";
+    //FIXME create in a singleton on startup?
+    QDir dir;
+    dir.mkpath(path);
+    return path;
+}
+
 QByteArray Sink::resourceName(const QByteArray &instanceIdentifier)
 {
     auto split = instanceIdentifier.split('.');
diff --git a/common/definitions.h b/common/definitions.h
index 96ec27e..a90b15a 100644
--- a/common/definitions.h
+++ b/common/definitions.h
@@ -26,5 +26,6 @@
 
 namespace Sink {
 QString SINK_EXPORT storageLocation();
+QString SINK_EXPORT temporaryFileLocation();
 QByteArray SINK_EXPORT resourceName(const QByteArray &instanceIdentifier);
 }
diff --git a/common/store.cpp b/common/store.cpp
index 4bf1c58..700263b 100644
--- a/common/store.cpp
+++ b/common/store.cpp
@@ -22,6 +22,7 @@
 
 #include <QTime>
 #include <QAbstractItemModel>
+#include <QUuid>
 #include <functional>
 #include <memory>
 
@@ -45,6 +46,11 @@ QString Store::storageLocation()
     return Sink::storageLocation();
 }
 
+QString Store::getTemporaryFilePath()
+{
+    return Sink::temporaryFileLocation() + "/" + QUuid::createUuid().toString();
+}
+
 static QList<QByteArray> getResources(const QList<QByteArray> &resourceFilter, const QByteArray &type = QByteArray())
 {
     // Return the global resource (signified by an empty name) for types that don't belong to a specific resource
diff --git a/common/store.h b/common/store.h
index af8e971..aed3be4 100644
--- a/common/store.h
+++ b/common/store.h
@@ -43,6 +43,11 @@ namespace Store {
 
 QString SINK_EXPORT storageLocation();
 
+/**
+ * Returns a unique path for a writable file that can be used to write BLOB properties.
+ */
+QString SINK_EXPORT getTemporaryFilePath();
+
 enum Roles
 {
     DomainObjectRole = Qt::UserRole + 1, // Must be the same as in ModelResult
@@ -51,8 +56,8 @@ enum Roles
 };
 
 /**
-    * Asynchronusly load a dataset with tree structure information
-    */
+* Asynchronusly load a dataset with tree structure information
+*/
 template <class DomainType>
 QSharedPointer<QAbstractItemModel> SINK_EXPORT loadModel(Query query);