/* mod_sparql.h
 *
 * Copyright 2006 david reid <mail@david-reid.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


#ifndef MOD_SPARQL_H
#define MOD_SPARQL_H

#include <redland.h>

struct store_uri {
    struct store_uri *next;
    const unsigned char *uri;
};

typedef struct {
    apr_pool_t *pool;        /* pool we use */

    int enabled;             /* are we enabled? */
    int remote;              /* remote queries OK? 1 = yes, 0 = no */
    int fileUris;            /* Do we allow URI's of the file:/// format? */

    /* Storage */
    char *st_name;             /* default location for data - how ? */
    char *st_type;             /* type of storage to use */
    char *st_opts;             /* store options string */
    struct store_uri *st_uris; /* URI's for the store */
    librdf_storage *store;     /* RDF storage pointer */
    librdf_model *model;       /* the model that represents the data */

    /* Query Language */
    char *ql_name;           /* query language name */
    librdf_uri *ql_uri;      /* query language URI */

    /* Outputs */
    int resFormat;           /* index of outputFormats[] */
    librdf_uri *outputUri;   /* URI for output format */
} mod_sparql_state_t;


#define RESULTS_FORMAT_SIMPLE   0
#define RESULTS_FORMAT_XML_V1   1
#define RESULTS_FORMAT_XML_V2   2
#define RESULTS_FORMAT_XML_V3   3
#define RESULTS_FORMAT_JSON     4

#define SPARQL_HANDLER_NAME "sparql-handler"
#define SPARQL_POST_CT      "application/x-www-form-urlencoded"

#define QUERY            "query="
#define DEFAULT_URI      "default-graph-uri="
#define SOURCE_URI       "named-graph-uri="

#define QUERY_LEN        strlen(QUERY)
#define DEFAULT_URI_LEN  strlen(DEFAULT_URI)
#define SOURCE_URI_LEN   strlen(SOURCE_URI)

#define IS_QUERY(x)    strncmp(x, QUERY, QUERY_LEN) == 0
#define IS_DEF_URI(x)  strncmp(x, DEFAULT_URI, DEFAULT_URI_LEN) == 0
#define IS_SRC_URI(x)  strncmp(x, SOURCE_URI, SOURCE_URI_LEN) == 0


#endif /* MOD_SPARQL_H */