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/* -*- Mode: c; c-basic-offset: 2 -*-
*
* rdf_node_internal.h - Internal RDF Node definitions
*
* $Id: rdf_node_internal.h 11467 2006-10-09 02:47:21Z dajobe $
*
* Copyright (C) 2000-2006, David Beckett http://purl.org/net/dajobe/
* Copyright (C) 2000-2005, University of Bristol, UK http://www.bristol.ac.uk/
*
* This package is Free Software and part of Redland http://librdf.org/
*
* It is licensed under the following three licenses as alternatives:
* 1. GNU Lesser General Public License (LGPL) V2.1 or any newer version
* 2. GNU General Public License (GPL) V2 or any newer version
* 3. Apache License, V2.0 or any newer version
*
* You may not use this file except in compliance with at least one of
* the above three licenses.
*
* See LICENSE.html or LICENSE.txt at the top of this package for the
* complete terms and further detail along with the license texts for
* the licenses in COPYING.LIB, COPYING and LICENSE-2.0.txt respectively.
*
*
*/
#ifndef LIBRDF_NODE_INTERNAL_H
#define LIBRDF_NODE_INTERNAL_H
#ifdef __cplusplus
extern "C" {
#endif
struct librdf_node_s
{
librdf_world *world;
librdf_node_type type;
int usage;
union
{
struct
{
/* rdf:Resource and rdf:Property-s have URIs */
librdf_uri *uri;
} resource;
struct
{
/* literals are UTF-8 string values ... */
unsigned char *string;
/* up to 2^31-1 bytes long */
unsigned int string_len;
/* datatype URI or null */
librdf_uri* datatype_uri;
/* XML defines these additional attributes for literals */
/* Language of literal (xml:lang) */
char *xml_language;
/* up to 255 bytes long */
unsigned char xml_language_len;
/* Hash key & size */
unsigned char *key;
size_t size;
} literal;
struct
{
/* blank nodes have an identifier */
unsigned char *identifier;
int identifier_len;
} blank;
} value;
};
/* initialising functions / constructors */
/* class methods */
void librdf_init_node(librdf_world* world);
void librdf_finish_node(librdf_world* world);
#ifdef LIBRDF_DEBUG
const char* librdf_node_get_type_as_string(int type);
#endif
/* exported public in error but never usable */
librdf_digest* librdf_node_get_digest(librdf_node* node);
#ifdef __cplusplus
}
#endif
#endif
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