JsonLdStreamSerializer
in package
implements
SerializerInterface
uses
TmpStreamSerializerTrait
A steaming JsonLD serializer. Generates output in the flatten JsonLD format and does it in a greedy way (meaning subjects/predicates/values are acumulated within graph/subject/predicate only if adjacent triples share the same graph/subject/predicate). On the brigh side it's fast and has minimal memory footprint.
To use this parser with the \quickRdfIo\Util::serialize() use the special
jsonld-stream value as $format.
Tags
Table of Contents
Interfaces
Constants
- DEFAULT_GRAPH_ID = '_:defaultGraph'
- MODE_GRAPH = 2
- MODE_TRIPLES = 1
Properties
- $context : array<string, string>
- $contextJson : string
- $firstValue : bool
- $mode : int
- $prevGraph : TermInterface
- $prevPredicate : TermInterface
- $prevSubject : TermInterface
Methods
- __construct() : mixed
- serialize() : string
- serializeStream() : void
- prepareContext() : void
- processGraph() : void
- processObject() : void
- processPredicate() : void
- processSubject() : void
- serializeId() : string
- serializeNode() : mixed
Constants
DEFAULT_GRAPH_ID
public
mixed
DEFAULT_GRAPH_ID
= '_:defaultGraph'
MODE_GRAPH
public
mixed
MODE_GRAPH
= 2
MODE_TRIPLES
public
mixed
MODE_TRIPLES
= 1
Properties
$context
private
array<string, string>
$context
$contextJson
private
string
$contextJson
$firstValue
private
bool
$firstValue
$mode
private
int
$mode
$prevGraph
private
TermInterface
$prevGraph
$prevPredicate
private
TermInterface
$prevPredicate
$prevSubject
private
TermInterface
$prevSubject
Methods
__construct()
public
__construct([int $mode = self::MODE_GRAPH ]) : mixed
Parameters
- $mode : int = self::MODE_GRAPH
serialize()
public
serialize(Traversable<string|int, QuadInterface>|array<string|int, QuadInterface> $graph[, RdfNamespaceInterface|null $nmsp = null ]) : string
Parameters
- $graph : Traversable<string|int, QuadInterface>|array<string|int, QuadInterface>
- $nmsp : RdfNamespaceInterface|null = null
Tags
Return values
stringserializeStream()
public
serializeStream(mixed $output, Traversable<string|int, QuadInterface>|array<string|int, QuadInterface> $graph[, RdfNamespaceInterface|null $nmsp = null ]) : void
Parameters
- $output : mixed
- $graph : Traversable<string|int, QuadInterface>|array<string|int, QuadInterface>
-
data to serialize
- $nmsp : RdfNamespaceInterface|null = null
-
allows to provide context for predicates. For that, register full predicate URIs as namespaces in the
$nmspobject.
prepareContext()
private
prepareContext(RdfNamespaceInterface $context) : void
Parameters
- $context : RdfNamespaceInterface
processGraph()
private
processGraph(StreamInterface $output, DefaultGraphInterface|NamedNodeInterface|BlankNodeInterface $graph) : void
Parameters
- $output : StreamInterface
- $graph : DefaultGraphInterface|NamedNodeInterface|BlankNodeInterface
processObject()
private
processObject(StreamInterface $output, TermInterface $object) : void
Parameters
- $output : StreamInterface
- $object : TermInterface
processPredicate()
private
processPredicate(StreamInterface $output, NamedNodeInterface $predicate) : void
Parameters
- $output : StreamInterface
- $predicate : NamedNodeInterface
processSubject()
private
processSubject(StreamInterface $output, NamedNodeInterface|BlankNodeInterface $subject) : void
Parameters
- $output : StreamInterface
- $subject : NamedNodeInterface|BlankNodeInterface
serializeId()
private
serializeId(string|TermInterface $term) : string
Parameters
- $term : string|TermInterface
Return values
stringserializeNode()
private
serializeNode(TermInterface $node) : mixed
Parameters
- $node : TermInterface