From: Taral <taral@cyberjunkie.com>

More COS Query Service support.

src/corba/CosQuery.idl

+/* RCS $Id: CosQuery.idl,v 1.1 1998/11/17 03:10:35 scrappy Exp $
+ *
+ * ----------------------------------------------------------------------------
+ * This is unmarked software provided by the Object Management Group,Inc. (OMG)
+ * ----------------------------------------------------------------------------
+ */
+
+
+/**
+ * CosQuery is the Common Object Services Specification query module
+ * as it it appears in COSS1, v1.0.
+ */
+
+
+#ifndef CosQuery_idl
+#define CosQuery_idl
+
+#ifndef CosQueryCollection_idl
+#include "CosQueryCollection.idl"
+#endif
+
+module CosQuery {
+
+  exception QueryInvalid {string why;}; 
+  exception QueryProcessingError {string why;}; 
+  exception QueryTypeInvalid {};
+
+  enum QueryStatus {complete, incomplete};
+
+  typedef CosQueryCollection::ParameterList ParameterList;
+
+  typedef CORBA::InterfaceDef QLType;
+  typedef sequence<QLType> QLTypeSeq;
+
+  interface Query;
+  interface QueryLanguageType {}; 
+  interface SQLQuery : QueryLanguageType {}; 
+  interface SQL_92Query : SQLQuery {}; 
+  interface OQL : QueryLanguageType {}; 
+  interface OQLBasic : OQL {}; 
+  interface OQL_93 : OQL {}; 
+  interface OQL_93Basic : OQL_93, OQLBasic {};
+
+  interface QueryEvaluator { 
+
+    readonly attribute QLTypeSeq ql_types; 
+    readonly attribute QLType default_ql_type;
+
+    any evaluate (in string         query,
+		  in QLType         ql_type, 
+		  in ParameterList  params) 
+      raises(QueryTypeInvalid,
+	     QueryInvalid,
+	     QueryProcessingError); 
+  };
+
+  interface QueryableCollection : QueryEvaluator, 
+    CosQueryCollection::Collection {
+
+  };
+
+  interface QueryManager : QueryEvaluator { 
+
+    Query create (in string          query,
+		  in QLType          ql_type, 
+		  in  ParameterList  params) 
+      raises(QueryTypeInvalid,
+	     QueryInvalid);
+
+  };
+
+  interface Query { 
+
+    readonly attribute QueryManager query_mgr;
+
+    void prepare (in ParameterList params) 
+      raises(QueryProcessingError); 
+
+    void execute (in ParameterList params) 
+      raises(QueryProcessingError);
+
+    QueryStatus get_status (); 
+
+    any get_result (); 
+  };
+
+};
+
+#endif // CosQuery_idl

src/corba/pgsql.idl

-#include "CosQueryCollection.idl"
-
 #ifndef pgsql_idl
 #define pgsql_idl
 
+#ifndef CosQuery_idl
+#include "CosQuery.idl"
+#endif
+
+#ifndef CosQueryCollection_idl
+#include "CosQueryCollection.idl"
+#endif
+
 module PostgreSQL {
 	
 	// Built-in types
@@ -23,6 +29,9 @@ module PostgreSQL {
 	  case false: any value;
 	};
 	
+	
+	// Row definition
+	
 	typedef sequence<Value> Row;
 	
 	// <info>
@@ -30,6 +39,7 @@ module PostgreSQL {
 	// 
 	// A Table will be a QueryableCollection of Rows
 	// A Database will be a QueryableCollection of Tables
+	// (Currently Tables are not exported... maybe later.)
 	// Both will be queryable via the Query Service
 	// 
 	// Other relations will be representable using the Relationship Service
@@ -52,18 +62,9 @@ module PostgreSQL {
 	// </info>
 	
 	
-    // Query result interface
-    // 
-    // Should the iterator support a 'boolean skip(in long n)' extension?
-    
-    interface QueryResult : CosQueryCollection::Collection {};
-    interface QueryResultIterator : CosQueryCollection::Iterator {};
-    
-    
 	// Connected database object
 	
-    interface Database {
-        QueryResult exec(in string query);
+	interface Database : CosQuery::QueryableCollection {
 		void disconnect();
 	};