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authorDavid Robillard <d@drobilla.net>2011-01-30 04:23:47 +0000
committerDavid Robillard <d@drobilla.net>2011-01-30 04:23:47 +0000
commit98cd625a7ba5eb91d473c1fe1504c7a9c050ef86 (patch)
tree1079a7ab5be03cddb56eccbffb5eba381d802fa4 /src/port.c
parentaa524702008b30123be3044b45a526de84312cff (diff)
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Non-SPARQL version of slv2_port_get_range.
1 query left... git-svn-id: http://svn.drobilla.net/lad/trunk/slv2@2867 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/port.c')
-rw-r--r--src/port.c91
1 files changed, 45 insertions, 46 deletions
diff --git a/src/port.c b/src/port.c
index 8ca2be0..3e072ed 100644
--- a/src/port.c
+++ b/src/port.c
@@ -177,6 +177,24 @@ slv2_port_get_value_by_qname(SLV2Plugin p,
}
+static SLV2Values
+slv2_port_get_value_by_node(SLV2Plugin p,
+ SLV2Port port,
+ librdf_node* predicate)
+{
+ assert(librdf_node_is_resource(predicate));
+
+ librdf_node* port_node = slv2_port_get_node(p, port);
+ librdf_stream* results = slv2_plugin_find_statements(
+ p,
+ port_node,
+ predicate,
+ NULL);
+
+ return slv2_values_from_stream_objects(p, results);
+}
+
+
SLV2Values
slv2_port_get_value(SLV2Plugin p,
SLV2Port port,
@@ -187,14 +205,10 @@ slv2_port_get_value(SLV2Plugin p,
return NULL;
}
- librdf_node* port_node = slv2_port_get_node(p, port);
- librdf_stream* results = slv2_plugin_find_statements(
- p,
- port_node,
- librdf_new_node_from_uri(p->world->world, slv2_value_as_librdf_uri(predicate)),
- NULL);
-
- return slv2_values_from_stream_objects(p, results);
+ return slv2_port_get_value_by_node(
+ p, port,
+ librdf_new_node_from_uri(p->world->world,
+ slv2_value_as_librdf_uri(predicate)));
}
@@ -264,45 +278,30 @@ slv2_port_get_range(SLV2Plugin p,
SLV2Value* min,
SLV2Value* max)
{
- if (def)
- *def = NULL;
- if (min)
- *min = NULL;
- if (max)
- *max = NULL;
-
- char* query = slv2_strjoin(
- "SELECT DISTINCT ?def ?min ?max WHERE {\n"
- "<", slv2_value_as_uri(p->plugin_uri), "> lv2:port ?port .\n"
- "?port lv2:symbol \"", slv2_value_as_string(port->symbol), "\".\n",
- "OPTIONAL { ?port lv2:default ?def }\n",
- "OPTIONAL { ?port lv2:minimum ?min }\n",
- "OPTIONAL { ?port lv2:maximum ?max }\n",
- "\n}", NULL);
-
- SLV2Results results = slv2_plugin_query_sparql(p, query);
-
- while (!librdf_query_results_finished(results->rdf_results)) {
- librdf_node* def_node = librdf_query_results_get_binding_value(results->rdf_results, 0);
- librdf_node* min_node = librdf_query_results_get_binding_value(results->rdf_results, 1);
- librdf_node* max_node = librdf_query_results_get_binding_value(results->rdf_results, 2);
-
- if (def && def_node && !*def)
- *def = slv2_value_new_librdf_node(p->world, def_node);
- if (min && min_node && !*min)
- *min = slv2_value_new_librdf_node(p->world, min_node);
- if (max && max_node && !*max)
- *max = slv2_value_new_librdf_node(p->world, max_node);
-
- if ((!def || *def) && (!min || *min) && (!max || *max))
- break;
-
- librdf_query_results_next(results->rdf_results);
+ if (def) {
+ SLV2Values defaults = slv2_port_get_value_by_node(
+ p, port, p->world->lv2_default_node);
+ *def = defaults
+ ? slv2_value_duplicate(slv2_values_get_at(defaults, 0))
+ : NULL;
+ slv2_values_free(defaults);
+ }
+ if (min) {
+ SLV2Values minimums = slv2_port_get_value_by_node(
+ p, port, p->world->lv2_minimum_node);
+ *min = minimums
+ ? slv2_value_duplicate(slv2_values_get_at(minimums, 0))
+ : NULL;
+ slv2_values_free(minimums);
+ }
+ if (max) {
+ SLV2Values maximums = slv2_port_get_value_by_node(
+ p, port, p->world->lv2_maximum_node);
+ *max = maximums
+ ? slv2_value_duplicate(slv2_values_get_at(maximums, 0))
+ : NULL;
+ slv2_values_free(maximums);
}
-
- slv2_results_free(results);
-
- free(query);
}