Refactored the QMF engine to adhere to the following rules regarding

the pimpl (Pointer to Implementation) pattern:

1) Impl classes have constructors matching the public constructors
2) Additional Impl constructors are accessed through a static factory function
3) All linkages to objects are to the public object
4) If a back-link (from Impl to public) is needed, the Impl class must be
   derived from boost::noncopyable
5) All public classes have non-default copy constructors that make a copy of the
   Impl class



git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@816770 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 5 insertions, 1 deletions

diff --git a/cpp/src/qmf/Query.h b/cpp/src/qmf/Query.h
index 875749862e..96ad2b0d24 100644
--- a/cpp/src/qmf/Query.h
+++ b/cpp/src/qmf/Query.h
@@ -77,7 +77,7 @@ namespace qmf {
         Query(const char* className, const char* packageName);
         Query(const SchemaClassKey* key);
         Query(const ObjectId* oid);
-        Query(QueryImpl* impl);
+        Query(const Query& from);
         ~Query();
 
         void setSelect(const QueryOperand* criterion);
@@ -96,6 +96,10 @@ namespace qmf {
         const char* getOrderBy() const;
         bool getDecreasing() const;
 
+    private:
+        friend class QueryImpl;
+        friend class BrokerProxyImpl;
+        Query(QueryImpl* impl);
         QueryImpl* impl;
     };
 }