function CONSTRUCT($query, $base_uri = null)
{
if (is_null($base_uri)) {
$base_uri = $this->_base_uri;
}
timings($query);
$q = librdf_new_query($this->_world, 'sparql', null, $query, $base_uri);
$r = librdf_model_query_execute($this->_model, $q);
$r_stream = librdf_query_results_as_stream($r);
$r_store = librdf_new_storage($this->_world, 'memory', '', null);
$r_model = librdf_new_model($this->_world, $r_store, null);
librdf_model_add_statements($r_model, $r_stream);
librdf_free_stream($r_stream);
$serializer = librdf_new_serializer($this->_world, 'json', null, null);
$r = librdf_serializer_serialize_model_to_string($serializer, null, $r_model);
librdf_free_serializer($serializer);
$r = json_decode($r, 1);
if (is_null($r)) {
$r = array();
}
librdf_free_model($r_model);
librdf_free_storage($r_store);
librdf_free_query($q);
timings();
return $r;
}
* See LICENSE.html or LICENSE.txt at the top of this package for the
* full license terms.
*
*
*/
/* ------------------------------------------------------------------------ */
print "Testing Redland...\n";
$dlls = array("redland.so", "php_redland.dll", "redland.dylib", "redland.bundle");
foreach ($dlls as $dll) {
if (file_exists($dll)) {
dl($dll);
}
}
$world = librdf_php_get_world();
print "Redland world opened\n";
$storage = librdf_new_storage($world, 'hashes', 'dummy', "new=yes,hash-type='memory'");
print "Redland storage created\n";
$model = librdf_new_model($world, $storage, '');
print "Redland model created\n";
$parser = librdf_new_parser($world, 'rdfxml', 'application/rdf+xml', null);
print "Redland parser created\n";
$uri = librdf_new_uri($world, 'file:../data/dc.rdf');
print "Parsing...\n";
librdf_parser_parse_into_model($parser, $uri, $uri, $model);
print "Done...\n";
librdf_free_uri($uri);
librdf_free_parser($parser);
$query = librdf_new_query($world, 'sparql', null, "PREFIX dc: <http://purl.org/dc/elements/1.1/> SELECT ?a ?c ?d WHERE { ?a dc:title ?c . OPTIONAL { ?a dc:related ?d } }", null);
print "Querying for dc:titles:\n";
$results = librdf_model_query_execute($model, $query);
$count = 1;
/**
* Creates a new storage backend.
*
* The storage methods available depends on the librdf configuration.
* Methods always available are `memory', `hashes', `file' and `uri'.
* Optional methods are `bdb', `mysql' and `sqllite'. The default is
* `memory'.
*
* The name argument is mandatory for storage methods that required a named
* handle, such as file and URI.
*
* <code>$stor = new LibRDF_Storage(storage_name="file", name="/tmp/filename");</code>
*
* The options string passes storage_name specific options to the chosen
* backend and uses the following form:
*
* <code>$stor = new LibRDF_Storage("storage_name", "name",
* "key1='value1', key2='value2', ...");</code>
*
* Options values must be surrounded by single quotes for multiple
* key/option pairs.
*
* The options common to all storage methods are:
* new - optional boolean (default false)
* If true, delete any existing store and create a new one, otherwise
* open an existing store.
*
* write - optional boolean (default true)
* If true, open the store in read-write mode.
*
* For hashes:
* hash-type - the name of any supported hash type (default 'memory')
* 'memory' and 'file' hash types are always present, and 'bdb'
* may be available depending on compile-time configuration of
* librdf.
*
* dir - (default '.') the directory in which to create files
*
* mode - (default 0644) the octal file mode with which to create files
*
* @param string $storage_name The type of storage to use
* @param string $name A name for the storage handle
* @param string $options Options for the storage backend
* @return void
* @throws LibRDF_Error If unable to create a new storage
* @access public
*/
public function __construct($storage_name = "memory", $name = NULL, $options = NULL)
{
$this->storage = librdf_new_storage(librdf_php_get_world(), $storage_name, $name, $options);
if (!$this->storage) {
throw new LibRDF_Error("Unable to create storage");
}
}
