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/* This file is part of the YAZ toolkit.
* Copyright (C) Index Data.
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Index Data nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file retrieval.h
* \brief Retrieval Utility
*/
#ifndef YAZ_RETRIEVAL_H
#define YAZ_RETRIEVAL_H
#include <stddef.h>
#include <yaz/wrbuf.h>
#include <yaz/yconfig.h>
#include <yaz/oid_util.h>
#include <yaz/record_conv.h>
YAZ_BEGIN_CDECL
/** retrieval handle */
typedef struct yaz_retrieval_struct *yaz_retrieval_t;
/** creates retrieval handle
\return retrieval handle
*/
YAZ_EXPORT yaz_retrieval_t yaz_retrieval_create(void);
/** destroys retrieval handle
\param p retrieval handle
*/
YAZ_EXPORT void yaz_retrieval_destroy(yaz_retrieval_t p);
#if YAZ_HAVE_XML2
/** configures retrieval
\param p retrieval handle
\param node xmlNode pointer (root element of XML config)
\retval 0 success
\retval -1 failure
On failure, call yaz_retrieval_get_error to get error string.
For retrieval:
\verbatim
<retrievalinfo>
<retrieval syntax="usmarc" name="F"/>
<retrieval syntax="usmarc" name="B"/>
<retrieval syntax="xml" name="marcxml"
identifier="info:srw/schema/1/marcxml-v1.1">
<backend syntax="usmarc" name="F">
<marc inputformat="marc" outputformat="marcxml"
inputcharset="marc-8"/>
</backend>
</retrieval>
<retrieval syntax="xml" name="dc">
<backend syntax="usmarc" name="F">
<marc inputformat="marc" outputformat="marcxml"
inputcharset="marc-8"/>
<xslt stylesheet="MARC21slim2DC.xsl"/>
</backend>
</retrieval>
</retrievalinfo>
\endverbatim
*/
YAZ_EXPORT
int yaz_retrieval_configure(yaz_retrieval_t p, const xmlNode *node);
/** configures retrieval with user-defined conversion types
\param p retrieval handle
\param node xmlNode pointer (root element of XML config)
\param types record conversion types
\retval 0 success
\retval -1 failure
On failure, use yaz_retrieval_get_error to get error string.
*/
YAZ_EXPORT
int yaz_retrieval_configure_t(yaz_retrieval_t p, const xmlNode *node,
struct yaz_record_conv_type *types);
#endif
/** performs retrieval request based on schema and format
\param p retrieval handle
\param schema record schema (SRU) / element set name (Z39.50)
\param syntax record syntax (format)
\param match_schema matched schema (if conversion was successful)
\param match_syntax matced syntax OID if conversion was successful)
\param rc record conversion reference (if conversion was successful)
\param backend_schema backend scchema (if conversion was successful)
\param backend_syntax backend syntax (if conversion was successful)
\retval 0 success, schema and syntax matches
\retval -1 failure, use yaz_retrieval_get_error() for reason
\retval 1 schema does not match
\retval 2 syntax does not match
\retval 3 both match but not together
*/
YAZ_EXPORT
int yaz_retrieval_request(yaz_retrieval_t p,
const char *schema, Odr_oid *syntax,
const char **match_schema, Odr_oid **match_syntax,
yaz_record_conv_t *rc,
const char **backend_schema,
Odr_oid **backend_syntax);
/** returns error string (for last error)
\param p record conversion handle
\return error string
*/
YAZ_EXPORT
const char *yaz_retrieval_get_error(yaz_retrieval_t p);
/** set path for opening stylesheets etc.
\param p record conversion handle
\param path file path (UNIX style with : / Windows with ;)
*/
YAZ_EXPORT
void yaz_retrieval_set_path(yaz_retrieval_t p, const char *path);
YAZ_END_CDECL
#endif
/*
* Local variables:
* c-basic-offset: 4
* c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
*/