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-rw-r--r--slv2/query.h105
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diff --git a/slv2/query.h b/slv2/query.h
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--- a/slv2/query.h
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-/* SLV2
- * Copyright (C) 2008-2009 David Robillard <http://drobilla.net>
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 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 General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#ifndef __SLV2_QUERY_H__
-#define __SLV2_QUERY_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/** \addtogroup slv2_data
- * @{
- */
-
-
-/** Query a plugin with an arbitrary SPARQL string.
- */
-SLV2_API
-SLV2Results
-slv2_plugin_query_sparql(SLV2Plugin plugin,
- const char* sparql_str);
-
-
-/** Free query results.
- */
-SLV2_API
-void
-slv2_results_free(SLV2Results results);
-
-
-/** Return the number of matches in \a results.
- * Note this should not be used to iterate over a result set (since it will
- * iterate to the end of \a results and rewinding is impossible).
- * Instead, use slv2_results_next and slv2_results_finished repeatedly.
- */
-SLV2_API
-unsigned
-slv2_results_size(SLV2Results results);
-
-
-/** Return true iff the end of \a results has been reached.
- */
-SLV2_API
-bool
-slv2_results_finished(SLV2Results results);
-
-
-/** Return a binding in \a results by index.
- * Indices correspond to selected variables in the query in order of appearance.
- * Returned value must be freed by caller with slv2_value_free.
- * \return NULL if binding value can not be expressed as an SLV2Value.
- */
-SLV2_API
-SLV2Value
-slv2_results_get_binding_value(SLV2Results results, unsigned index);
-
-
-/** Return a binding in \a results by name.
- * \a name corresponds to the name of the SPARQL variable (without the '?').
- * Returned value must be freed by caller with slv2_value_free.
- * \return NULL if binding value can not be expressed as an SLV2Value.
- */
-SLV2_API
-SLV2Value
-slv2_results_get_binding_value_by_name(SLV2Results results, const char* name);
-
-
-/** Return the name of a binding in \a results.
- * Returned value is shared and must not be freed by caller.
- * Indices correspond to selected variables in the query in order of appearance.
- */
-SLV2_API
-const char*
-slv2_results_get_binding_name(SLV2Results results, unsigned index);
-
-
-/** Increment \a results to the next match.
- */
-SLV2_API
-void
-slv2_results_next(SLV2Results results);
-
-
-/** @} */
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif /* __SLV2_QUERY_H__ */