[tracker/ontology-cope: 3/9] libtracker-common, libtracker-data: Introduce TrackerOntology class



commit e4966a6f8a0912b2b054c506b3dad66de694afed
Author: Philip Van Hoof <philip codeminded be>
Date:   Tue Feb 16 14:29:53 2010 +0100

    libtracker-common, libtracker-data: Introduce TrackerOntology class

 src/libtracker-common/Makefile.am          |    2 +
 src/libtracker-common/tracker-common.h     |    1 +
 src/libtracker-common/tracker-ontologies.c |   54 +++++++
 src/libtracker-common/tracker-ontologies.h |    4 +
 src/libtracker-common/tracker-ontology.c   |  228 ++++++++++++++++++++++++++++
 src/libtracker-common/tracker-ontology.h   |   63 ++++++++
 src/libtracker-data/tracker-data-manager.c |   25 +++-
 7 files changed, 374 insertions(+), 3 deletions(-)
---
diff --git a/src/libtracker-common/Makefile.am b/src/libtracker-common/Makefile.am
index 64a5a14..7c2f37f 100644
--- a/src/libtracker-common/Makefile.am
+++ b/src/libtracker-common/Makefile.am
@@ -67,6 +67,7 @@ libtracker_common_la_SOURCES =	 			\
 	tracker-language.c				\
 	tracker-log.c	 				\
 	tracker-namespace.c				\
+	tracker-ontology.c				\
 	tracker-ontologies.c				\
 	tracker-property.c				\
 	tracker-type-utils.c				\
@@ -91,6 +92,7 @@ libtracker_commoninclude_HEADERS =			\
 	tracker-keyfile-object.h			\
 	tracker-language.h				\
 	tracker-namespace.h				\
+	tracker-ontology.h				\
 	tracker-ontologies.h				\
 	tracker-property.h				\
 	tracker-turtle-writer.h				\
diff --git a/src/libtracker-common/tracker-common.h b/src/libtracker-common/tracker-common.h
index 81245a5..b826c30 100644
--- a/src/libtracker-common/tracker-common.h
+++ b/src/libtracker-common/tracker-common.h
@@ -47,6 +47,7 @@ G_BEGIN_DECLS
 #include "tracker-keyfile-object.h"
 #include "tracker-language.h"
 #include "tracker-namespace.h"
+#include "tracker-ontology.h"
 #include "tracker-ontologies.h"
 #include "tracker-property.h"
 #include "tracker-type-utils.h"
diff --git a/src/libtracker-common/tracker-ontologies.c b/src/libtracker-common/tracker-ontologies.c
index 7d1894a..021ba52 100644
--- a/src/libtracker-common/tracker-ontologies.c
+++ b/src/libtracker-common/tracker-ontologies.c
@@ -35,6 +35,12 @@ static GPtrArray  *namespaces;
 /* Namespace uris */
 static GHashTable *namespace_uris;
 
+/* List of TrackerOntology objects */
+static GPtrArray  *ontologies;
+
+/* Ontology uris */
+static GHashTable *ontology_uris;
+
 /* List of TrackerClass objects */
 static GPtrArray  *classes;
 
@@ -62,11 +68,18 @@ tracker_ontologies_init (void)
 
 	namespaces = g_ptr_array_new ();
 
+	ontologies = g_ptr_array_new ();
+
 	namespace_uris = g_hash_table_new_full (g_str_hash,
 	                                        g_str_equal,
 	                                        g_free,
 	                                        g_object_unref);
 
+	ontology_uris = g_hash_table_new_full (g_str_hash,
+	                                       g_str_equal,
+	                                       g_free,
+	                                       g_object_unref);
+
 	classes = g_ptr_array_new ();
 
 	class_uris = g_hash_table_new_full (g_str_hash,
@@ -107,6 +120,12 @@ tracker_ontologies_shutdown (void)
 	g_hash_table_unref (namespace_uris);
 	namespace_uris = NULL;
 
+	g_ptr_array_foreach (ontologies, (GFunc) g_object_unref, NULL);
+	g_ptr_array_free (ontologies, TRUE);
+
+	g_hash_table_unref (ontology_uris);
+	ontology_uris = NULL;
+
 	g_ptr_array_foreach (classes, (GFunc) g_object_unref, NULL);
 	g_ptr_array_free (classes, TRUE);
 
@@ -176,6 +195,18 @@ tracker_ontologies_get_namespaces (guint *length)
 	return (TrackerNamespace **) namespaces->pdata;
 }
 
+TrackerOntology **
+tracker_ontologies_get_ontologies (guint *length)
+{
+	if (G_UNLIKELY (!ontologies)) {
+		*length = 0;
+		return NULL;
+	}
+
+	*length = ontologies->len;
+	return (TrackerOntology **) ontologies->pdata;
+}
+
 TrackerClass **
 tracker_ontologies_get_classes (guint *length)
 {
@@ -249,6 +280,22 @@ tracker_ontologies_add_namespace (TrackerNamespace *namespace)
 	                     g_object_ref (namespace));
 }
 
+void
+tracker_ontologies_add_ontology (TrackerOntology *ontology)
+{
+	const gchar *uri;
+
+	g_return_if_fail (TRACKER_IS_ONTOLOGY (ontology));
+
+	uri = tracker_ontology_get_uri (ontology);
+
+	g_ptr_array_add (ontologies, g_object_ref (ontology));
+
+	g_hash_table_insert (ontology_uris,
+	                     g_strdup (uri),
+	                     g_object_ref (ontology));
+}
+
 TrackerNamespace *
 tracker_ontologies_get_namespace_by_uri (const gchar *uri)
 {
@@ -258,4 +305,11 @@ tracker_ontologies_get_namespace_by_uri (const gchar *uri)
 }
 
 
+TrackerOntology *
+tracker_ontologies_get_ontology_by_uri (const gchar *uri)
+{
+	g_return_val_if_fail (uri != NULL, NULL);
+
+	return g_hash_table_lookup (ontology_uris, uri);
+}
 
diff --git a/src/libtracker-common/tracker-ontologies.h b/src/libtracker-common/tracker-ontologies.h
index fb66770..4ebeff5 100644
--- a/src/libtracker-common/tracker-ontologies.h
+++ b/src/libtracker-common/tracker-ontologies.h
@@ -25,6 +25,7 @@
 
 #include "tracker-class.h"
 #include "tracker-namespace.h"
+#include "tracker-ontology.h"
 #include "tracker-property.h"
 
 G_BEGIN_DECLS
@@ -66,6 +67,7 @@ void               tracker_ontologies_shutdown             (void);
 void               tracker_ontologies_add_class            (TrackerClass     *service);
 TrackerClass *     tracker_ontologies_get_class_by_uri     (const gchar      *service_uri);
 TrackerNamespace **tracker_ontologies_get_namespaces       (guint *length);
+TrackerOntology  **tracker_ontologies_get_ontologies       (guint *length);
 TrackerClass  **   tracker_ontologies_get_classes          (guint *length);
 TrackerProperty ** tracker_ontologies_get_properties       (guint *length);
 
@@ -73,7 +75,9 @@ TrackerProperty ** tracker_ontologies_get_properties       (guint *length);
 void               tracker_ontologies_add_property         (TrackerProperty  *field);
 TrackerProperty *  tracker_ontologies_get_property_by_uri  (const gchar      *uri);
 void               tracker_ontologies_add_namespace        (TrackerNamespace *namespace_);
+void               tracker_ontologies_add_ontology         (TrackerOntology  *ontology);
 TrackerNamespace * tracker_ontologies_get_namespace_by_uri (const gchar      *namespace_uri);
+TrackerOntology  * tracker_ontologies_get_ontology_by_uri  (const gchar      *namespace_uri);
 const gchar*       tracker_ontologies_get_uri_by_id        (gint              id);
 void               tracker_ontologies_add_id_uri_pair      (gint              id,
                                                             const gchar      *uri);
diff --git a/src/libtracker-common/tracker-ontology.c b/src/libtracker-common/tracker-ontology.c
new file mode 100644
index 0000000..7111270
--- /dev/null
+++ b/src/libtracker-common/tracker-ontology.c
@@ -0,0 +1,228 @@
+/*
+ * Copyright (C) 2009, Nokia
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA.
+ *
+ * Author: Philip Van Hoof <philip codeminded be>
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+#include <glib.h>
+
+#include "tracker-ontology.h"
+
+#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), TRACKER_TYPE_ONTOLOGY, TrackerOntologyPriv))
+
+typedef struct _TrackerOntologyPriv TrackerOntologyPriv;
+
+struct _TrackerOntologyPriv {
+	gchar *uri;
+	gchar *last_modified;
+};
+
+static void ontology_finalize     (GObject      *object);
+static void ontology_get_property (GObject      *object,
+                                   guint         param_id,
+                                   GValue       *value,
+                                   GParamSpec   *pspec);
+static void ontology_set_property (GObject      *object,
+                                   guint         param_id,
+                                   const GValue *value,
+                                   GParamSpec   *pspec);
+
+enum {
+	PROP_0,
+	PROP_URI,
+	PROP_LAST_MODIFIED,
+};
+
+G_DEFINE_TYPE (TrackerOntology, tracker_ontology, G_TYPE_OBJECT);
+
+static void
+tracker_ontology_class_init (TrackerOntologyClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+	object_class->finalize     = ontology_finalize;
+	object_class->get_property = ontology_get_property;
+	object_class->set_property = ontology_set_property;
+
+	g_object_class_install_property (object_class,
+	                                 PROP_URI,
+	                                 g_param_spec_string ("uri",
+	                                                      "uri",
+	                                                      "URI",
+	                                                      NULL,
+	                                                      G_PARAM_READWRITE));
+	g_object_class_install_property (object_class,
+	                                 PROP_LAST_MODIFIED,
+	                                 g_param_spec_string ("last-modified",
+	                                                      "last-modified",
+	                                                      "Last modified",
+	                                                      NULL,
+	                                                      G_PARAM_READWRITE));
+
+	g_type_class_add_private (object_class, sizeof (TrackerOntologyPriv));
+}
+
+static void
+tracker_ontology_init (TrackerOntology *service)
+{
+}
+
+static void
+ontology_finalize (GObject *object)
+{
+	TrackerOntologyPriv *priv;
+
+	priv = GET_PRIV (object);
+
+	g_free (priv->uri);
+	g_free (priv->last_modified);
+
+	(G_OBJECT_CLASS (tracker_ontology_parent_class)->finalize) (object);
+}
+
+static void
+ontology_get_property (GObject    *object,
+                       guint       param_id,
+                       GValue     *value,
+                       GParamSpec *pspec)
+{
+	TrackerOntologyPriv *priv;
+
+	priv = GET_PRIV (object);
+
+	switch (param_id) {
+	case PROP_URI:
+		g_value_set_string (value, priv->uri);
+		break;
+	case PROP_LAST_MODIFIED:
+		g_value_set_string (value, priv->last_modified);
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+		break;
+	};
+}
+
+static void
+ontology_set_property (GObject      *object,
+                       guint         param_id,
+                       const GValue *value,
+                       GParamSpec   *pspec)
+{
+	TrackerOntologyPriv *priv;
+
+	priv = GET_PRIV (object);
+
+	switch (param_id) {
+	case PROP_URI:
+		tracker_ontology_set_uri (TRACKER_ONTOLOGY (object),
+		                          g_value_get_string (value));
+		break;
+	case PROP_LAST_MODIFIED:
+		tracker_ontology_set_last_modified (TRACKER_ONTOLOGY (object),
+		                                    g_value_get_string (value));
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+		break;
+	};
+}
+
+TrackerOntology *
+tracker_ontology_new (void)
+{
+	TrackerOntology *ontology;
+
+	ontology = g_object_new (TRACKER_TYPE_ONTOLOGY, NULL);
+
+	return ontology;
+}
+
+const gchar *
+tracker_ontology_get_last_modified (TrackerOntology *ontology)
+{
+	TrackerOntologyPriv *priv;
+
+	g_return_val_if_fail (TRACKER_IS_ONTOLOGY (ontology), NULL);
+
+	priv = GET_PRIV (ontology);
+
+	return priv->last_modified;
+}
+
+
+void
+tracker_ontology_set_last_modified (TrackerOntology *ontology,
+                                    const gchar    *value)
+{
+	TrackerOntologyPriv *priv;
+
+	g_return_if_fail (TRACKER_IS_ONTOLOGY (ontology));
+
+	priv = GET_PRIV (ontology);
+
+	g_free (priv->last_modified);
+
+	if (value) {
+		priv->last_modified = g_strdup (value);
+	} else {
+		priv->last_modified = NULL;
+	}
+
+	g_object_notify (G_OBJECT (ontology), "last-modified");
+}
+
+
+const gchar *
+tracker_ontology_get_uri (TrackerOntology *ontology)
+{
+	TrackerOntologyPriv *priv;
+
+	g_return_val_if_fail (TRACKER_IS_ONTOLOGY (ontology), NULL);
+
+	priv = GET_PRIV (ontology);
+
+	return priv->uri;
+}
+
+
+void
+tracker_ontology_set_uri (TrackerOntology *ontology,
+                          const gchar    *value)
+{
+	TrackerOntologyPriv *priv;
+
+	g_return_if_fail (TRACKER_IS_ONTOLOGY (ontology));
+
+	priv = GET_PRIV (ontology);
+
+	g_free (priv->uri);
+
+	if (value) {
+		priv->uri = g_strdup (value);
+	} else {
+		priv->uri = NULL;
+	}
+
+	g_object_notify (G_OBJECT (ontology), "uri");
+}
diff --git a/src/libtracker-common/tracker-ontology.h b/src/libtracker-common/tracker-ontology.h
new file mode 100644
index 0000000..270b590
--- /dev/null
+++ b/src/libtracker-common/tracker-ontology.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2009, Nokia
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA.
+ *
+ * Author: Philip Van Hoof <philip codeminded be>
+ */
+
+#ifndef __LIBTRACKER_COMMON_ONTOLOGY_H__
+#define __LIBTRACKER_COMMON_ONTOLOGY_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#if !defined (__LIBTRACKER_COMMON_INSIDE__) && !defined (TRACKER_COMPILATION)
+#error "only <libtracker-common/tracker-common.h> must be included directly."
+#endif
+
+#define TRACKER_TYPE_ONTOLOGY         (tracker_ontology_get_type ())
+#define TRACKER_ONTOLOGY(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), TRACKER_TYPE_ONTOLOGY, TrackerOntology))
+#define TRACKER_ONTOLOGY_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST ((k), TRACKER_TYPE_ONTOLOGY, TrackerOntologyClass))
+#define TRACKER_IS_ONTOLOGY(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), TRACKER_TYPE_ONTOLOGY))
+#define TRACKER_IS_ONTOLOGY_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), TRACKER_TYPE_ONTOLOGY))
+#define TRACKER_ONTOLOGY_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), TRACKER_TYPE_ONTOLOGY, TrackerOntologyClass))
+
+typedef struct _TrackerOntology TrackerOntology;
+typedef struct _TrackerOntologyClass TrackerOntologyClass;
+
+struct _TrackerOntology {
+	GObject parent;
+};
+
+struct _TrackerOntologyClass {
+	GObjectClass parent_class;
+};
+
+GType             tracker_ontology_get_type          (void) G_GNUC_CONST;
+TrackerOntology  *tracker_ontology_new               (void);
+const gchar *     tracker_ontology_get_last_modified (TrackerOntology *ontology);
+void              tracker_ontology_set_last_modified (TrackerOntology *ontology,
+                                                      const gchar      *value);
+const gchar *     tracker_ontology_get_uri           (TrackerOntology *ontology);
+void              tracker_ontology_set_uri           (TrackerOntology *ontology,
+                                                      const gchar      *value);
+
+G_END_DECLS
+
+#endif /* __LIBTRACKER_COMMON_ONTOLOGY_H__ */
+
diff --git a/src/libtracker-data/tracker-data-manager.c b/src/libtracker-data/tracker-data-manager.c
index be06cca..933eba5 100644
--- a/src/libtracker-data/tracker-data-manager.c
+++ b/src/libtracker-data/tracker-data-manager.c
@@ -136,10 +136,18 @@ load_ontology_statement (const gchar *ontology_file,
 			tracker_ontologies_add_namespace (namespace);
 			g_object_unref (namespace);
 		} else if (g_strcmp0 (object, TRACKER_PREFIX "Ontology") == 0) {
-			g_print ("ONTOLOGY: %s\n", subject);
+			TrackerOntology *ontology;
+
+			if (tracker_ontologies_get_ontology_by_uri (subject) != NULL) {
+				g_critical ("%s: Duplicate definition of ontology %s", ontology_file, subject);
+				return;
+			}
+
+			ontology = tracker_ontology_new ();
+			tracker_ontology_set_uri (ontology, subject);
+			tracker_ontologies_add_ontology (ontology);
+			g_object_unref (ontology);
 		}
-	} else if (g_strcmp0 (predicate, NAO_LAST_MODIFIED) == 0) {
-		g_print ("\tNAO LAST MODIFIED: %s\n", object);
 	} else if (g_strcmp0 (predicate, RDFS_SUB_CLASS_OF) == 0) {
 		TrackerClass *class, *super_class;
 
@@ -276,7 +284,18 @@ load_ontology_statement (const gchar *ontology_file,
 		}
 
 		tracker_namespace_set_prefix (namespace, object);
+	} else if (g_strcmp0 (predicate, NAO_LAST_MODIFIED) == 0) {
+		TrackerOntology *ontology;
+
+		ontology = tracker_ontologies_get_ontology_by_uri (subject);
+		if (ontology == NULL) {
+			g_critical ("%s: Unknown ontology %s", ontology_file, subject);
+			return;
+		}
+
+		tracker_ontology_set_last_modified (ontology, object);
 	}
+
 }
 
 static void



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