summaryrefslogtreecommitdiff
path: root/libodb-qt/odb/qt/smart-ptr/lazy-ptr.txx
diff options
context:
space:
mode:
Diffstat (limited to 'libodb-qt/odb/qt/smart-ptr/lazy-ptr.txx')
-rw-r--r--libodb-qt/odb/qt/smart-ptr/lazy-ptr.txx74
1 files changed, 74 insertions, 0 deletions
diff --git a/libodb-qt/odb/qt/smart-ptr/lazy-ptr.txx b/libodb-qt/odb/qt/smart-ptr/lazy-ptr.txx
new file mode 100644
index 0000000..0ae038a
--- /dev/null
+++ b/libodb-qt/odb/qt/smart-ptr/lazy-ptr.txx
@@ -0,0 +1,74 @@
+// file : odb/qt/smart-ptr/lazy-ptr.txx
+// license : GNU GPL v2; see accompanying LICENSE file
+
+template <class T>
+template <class X>
+bool QLazySharedPointer<T>::
+equal (const QLazySharedPointer<X>& r) const
+{
+ bool t1 (!p_ == loaded ());
+ bool t2 (!r.p_ == r.loaded ());
+
+ // If both are transient, then compare the underlying pointers.
+ //
+ if (t1 && t2)
+ return p_ == r.p_;
+
+ // If one is transient and the other is persistent, then compare
+ // the underlying pointers but only if they are non NULL. Note
+ // that an unloaded persistent object is always unequal to a
+ // transient object.
+ //
+ if (t1 || t2)
+ return p_ == r.p_ && p_;
+
+ // If both objects are persistent, then we compare databases and
+ // object ids.
+ //
+ typedef typename odb::object_traits<T>::object_type object_type1;
+ typedef typename odb::object_traits<X>::object_type object_type2;
+
+ return i_.database () == r.i_.database () &&
+ objectId<object_type1> () == r.template objectId<object_type2> ();
+}
+
+//
+// QLazyWeakPointer
+//
+
+template <class T>
+template <class X>
+bool QLazyWeakPointer<T>::
+equal (const QLazyWeakPointer<X>& r) const
+{
+ if (isNull () && r.isNull ())
+ return true;
+
+ QLazySharedPointer<T> sp1 (toStrongRef ());
+ QLazySharedPointer<T> sp2 (r.toStrongRef ());
+
+ // If either one has expired, they are not equal.
+ //
+ if (!sp1 || !sp2)
+ return false;
+
+ return sp1.equal (sp2);
+}
+
+template <class T>
+template <class X>
+bool QLazyWeakPointer<T>::
+equal (const QLazySharedPointer<X>& r) const
+{
+ if (isNull () && r.isNull ())
+ return true;
+
+ QLazySharedPointer<T> sp (toStrongRef ());
+
+ // If the weak pointer has expired, they are not equal.
+ //
+ if (!sp)
+ return false;
+
+ return r.equal (sp);
+}