I found a bug that causes incorrect query results, and attached a
patch below.
In early versions of Virtuoso, only one bit (BF_IRI) is defined for
the value of ``flag'',
though three bits are defined in recent versions. So the value of
``flag'' should be masked
whenever it is checked.
lenrek
diff -urN redland-1.0.10/src/rdf_storage_virtuoso.c redland-1.0.10-
fixed/src/rdf_storage_virtuoso.c
--- redland-1.0.10/src/rdf_storage_virtuoso.c 2009-12-14
15:18:04.000000000 +0900
+++ redland-1.0.10-fixed/src/rdf_storage_virtuoso.c 2009-12-17
16:20:59.000000000 +0900
@@ -358,7 +358,7 @@
switch(dvtype) {
case VIRTUOSO_DV_STRING:
{
- if(flag) {
+ if(flag & VIRTUOSO_BF_IRI) {
if(strncmp((char*)data, "_:",2)==0) {
node=librdf_new_node_from_blank_identifier(storage->world, (const
unsigned char*)data+2);
} else {
diff -urN redland-1.0.10/src/rdf_storage_virtuoso_internal.h
redland-1.0.10-fixed/src/rdf_storage_virtuoso_internal.h
--- redland-1.0.10/src/rdf_storage_virtuoso_internal.h 2009-08-26
14:17:24.000000000 +0900
+++ redland-1.0.10-fixed/src/rdf_storage_virtuoso_internal.h
2009-12-17 16:19:52.000000000 +0900
@@ -170,4 +170,12 @@
#define VIRTUOSO_DT_TYPE_DATE 2
#define VIRTUOSO_DT_TYPE_TIME 3
+
+/*
+ * Virtuoso - ODBC SQL_DESC_COL_BOX_FLAGS
+ */
+#define VIRTUOSO_BF_IRI 0x1
+#define VIRTUOSO_BF_UTF8 0x2
+#define VIRTUOSO_BF_DEFAULT_SERVER_ENC 0x4
+
#endif
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