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Move library tree where it belongs
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228
lib-src/redland/librdf/rdf_storage_sql.c
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lib-src/redland/librdf/rdf_storage_sql.c
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/* -*- Mode: c; c-basic-offset: 2 -*-
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*
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* rdf_storage.c - RDF Storage SQL support functions
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*
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* Copyright (C) 2008, David Beckett http://www.dajobe.org/
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*
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* This package is Free Software and part of Redland http://librdf.org/
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*
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* It is licensed under the following three licenses as alternatives:
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* 1. GNU Lesser General Public License (LGPL) V2.1 or any newer version
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* 2. GNU General Public License (GPL) V2 or any newer version
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* 3. Apache License, V2.0 or any newer version
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*
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* You may not use this file except in compliance with at least one of
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* the above three licenses.
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*
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* See LICENSE.html or LICENSE.txt at the top of this package for the
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* complete terms and further detail along with the license texts for
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* the licenses in COPYING.LIB, COPYING and LICENSE-2.0.txt respectively.
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*
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <rdf_config.h>
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#endif
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#ifdef WIN32
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#include <win32_rdf_config.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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/* for access() and R_OK */
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#include <redland.h>
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static void librdf_sql_config_store_triple(void *user_data, const raptor_statement *triple);
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static void
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librdf_sql_config_store_triple(void *user_data,
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const raptor_statement *triple)
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{
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librdf_sql_config* config=(librdf_sql_config*)user_data;
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int i;
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for(i=0; i < config->predicates_count; i++) {
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if(triple->predicate_type != RAPTOR_IDENTIFIER_TYPE_RESOURCE ||
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triple->object_type != RAPTOR_IDENTIFIER_TYPE_LITERAL)
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continue;
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if(!strcmp((const char*)librdf_uri_as_string((librdf_uri*)triple->predicate),
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config->predicate_uri_strings[i])) {
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config->values[i]=strdup((char*)triple->object);
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#if LIBRDF_DEBUG > 1
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LIBRDF_DEBUG3("Set config value %d to '%s'\n", i, config->values[i]);
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#endif
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}
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}
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return;
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}
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/**
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* librdf_new_sql_config:
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* @world: librdf_world
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* @storage_name: SQL storage name
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* @layout: SQL schema variant
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* @config_dir: directory for configuration files
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* @predicate_uri_strings: configuration predicate URIs to look for
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*
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* Constructor - Make a new SQL configuration for a layout from a file
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*
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* Uses SQL storage name @storage_name and with database schema
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* @layout to give a configuration that will contain an array of
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* string values in the #librdf_sql_config field values array.
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*
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* Return value: configuration or NULL on failure
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**/
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librdf_sql_config*
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librdf_new_sql_config(librdf_world* world,
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const char* storage_name,
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const char* layout,
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const char* config_dir,
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const char** predicate_uri_strings)
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{
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raptor_parser* rdf_parser=NULL;
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unsigned char *uri_string=NULL;
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raptor_uri *base_uri;
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raptor_uri *uri;
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librdf_sql_config* config;
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size_t len;
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int i;
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librdf_world_open(world);
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config=(librdf_sql_config*)LIBRDF_MALLOC(librdf_sql_config,
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sizeof(librdf_sql_config));
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len=strlen(config_dir) + 1 + strlen(storage_name) + 4 + 1;
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if(layout)
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len+= strlen(layout) + 1;
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config->filename=(char*)LIBRDF_MALLOC(cstring, len);
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if(layout)
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sprintf(config->filename, "%s/%s-%s.ttl", config_dir, storage_name, layout);
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else
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sprintf(config->filename, "%s/%s.ttl", config_dir, storage_name);
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config->predicate_uri_strings=predicate_uri_strings;
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for(i=0; config->predicate_uri_strings[i]; i++)
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;
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config->predicates_count=i;
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config->values=(char**)LIBRDF_CALLOC(cstring, sizeof(char*),
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config->predicates_count);
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LIBRDF_DEBUG4("Attempting to open %s layout %s storage config file %s\n",
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storage_name, (layout ? layout: "(default)"), config->filename);
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if(access((const char*)config->filename, R_OK)) {
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librdf_log(world, 0, LIBRDF_LOG_ERROR, LIBRDF_FROM_STORAGE, NULL,
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"Failed to open configuration file %s for storage %s layout %s - %s",
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config->filename, storage_name, (layout ? layout: "(default)"),
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strerror(errno));
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librdf_free_sql_config(config);
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return NULL;
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}
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uri_string=raptor_uri_filename_to_uri_string(config->filename);
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uri=raptor_new_uri(uri_string);
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base_uri=raptor_uri_copy(uri);
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rdf_parser=raptor_new_parser("turtle");
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raptor_set_statement_handler(rdf_parser, config,
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librdf_sql_config_store_triple);
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raptor_parse_file(rdf_parser, uri, base_uri);
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raptor_free_parser(rdf_parser);
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raptor_free_uri(base_uri);
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raptor_free_memory(uri_string);
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raptor_free_uri(uri);
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/* Check all values are given */
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for(i=0; i < config->predicates_count; i++) {
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if(!config->values[i]) {
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librdf_log(world, 0, LIBRDF_LOG_ERROR, LIBRDF_FROM_STORAGE, NULL,
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"Configuration %s missing for storage %s",
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config->predicate_uri_strings[i], storage_name);
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librdf_free_sql_config(config);
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return NULL;
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}
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}
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return config;
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}
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const char* librdf_storage_sql_dbconfig_predicates[DBCONFIG_CREATE_TABLE_LAST+2]={
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"http://schemas.librdf.org/2006/dbconfig#createTableStatements",
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"http://schemas.librdf.org/2006/dbconfig#createTableLiterals",
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"http://schemas.librdf.org/2006/dbconfig#createTableResources",
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"http://schemas.librdf.org/2006/dbconfig#createTableBnodes",
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"http://schemas.librdf.org/2006/dbconfig#createTableModels",
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NULL
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};
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/**
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* librdf_new_sql_config_for_storage:
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* @storage: SQL #librdf_storage to configure
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* @layout: layout variant
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* @dir: directory to look for configuration or NULL for default dir
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*
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* Constructor - Create a new SQL storage configuration for a given database layout.
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*
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* Return value: new configuration or NULL on failure
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**/
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librdf_sql_config*
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librdf_new_sql_config_for_storage(librdf_storage* storage, const char* layout,
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const char *dir)
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{
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if(!dir)
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dir=PKGDATADIR;
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return librdf_new_sql_config(storage->world, storage->factory->name,
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layout, dir,
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librdf_storage_sql_dbconfig_predicates);
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}
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/**
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* librdf_free_sql_config:
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* @config: SQL storage configuration
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*
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* Destructor - free a SQL configuration.
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**/
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void
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librdf_free_sql_config(librdf_sql_config* config)
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{
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int i;
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if(config->values) {
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for(i=0; i < config->predicates_count; i++) {
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if(config->values[i])
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LIBRDF_FREE(cstring, config->values[i]);
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}
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LIBRDF_FREE(cstring, config->values);
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}
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if(config->filename)
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LIBRDF_FREE(cstring, config->filename);
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LIBRDF_FREE(cstring, config);
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}
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