Shared/com.erfangholami.androidsolidservices.shared.rdf.contacts/GroupRDF

GroupRDF

RDF representation of a Solid contact group (vcard:Group).

Wraps the quads of one group document on a pod and exposes typed accessors and mutators. Construct from a pod response by passing the parsed quads, or create a new empty instance by supplying only the identifier.

All mutator methods update the in-memory quad list; call the contacts data module to persist the change to the pod.

Constructors

GroupRDF

constructor(identifier: String, contentType: String? = null, quads: List<RdfQuad>? = null, headers: SolidHeaders? = null)

Functions

addMember

fun addMember(contact: ContactRDF)

Adds contact as a member of this group (vcard:hasMember), also recording the contact's display name inline so group listings can be rendered without an extra pod request.

addQuad

fun addQuad(subject: String, predicate: String, obj: String, maxNumber: Int = 1)

Adds a triple whose object is an IRI (or blank node).

addQuadLiteral

fun addQuadLiteral(subject: String, predicate: String, value: String, datatype: String? = XSD.STRING, language: String? = null, maxNumber: Int = 1)

Adds a triple whose object is a literal.

clearProperties

fun clearProperties(predicate: String, subject: String = itselfSubject)

Removes every triple with the given predicate for subject.

open override fun close()

describeContents

open override fun describeContents(): Int

ensureType

fun ensureType(subject: String, typeIri: String)

Ensures subject carries an rdf:type triple with typeIri, preserving any other type triples already present.

findAllProperties

fun findAllProperties(predicate: String): List<String>

Returns the object values of every triple with the given predicate, across all subjects.

findAllPropertiesForSubject

fun findAllPropertiesForSubject(subject: String, predicate: String): List<String>

Returns the object values of every triple matching the given subject and predicate.

findProperty

fun findProperty(predicate: String): String?

Returns the object value of the first triple with the given predicate, or null if none.

findPropertyForSubject

fun findPropertyForSubject(subject: String, predicate: String): String?

Returns the object value of the first triple matching subject and predicate, or null.

getAllQuads

fun getAllQuads(): List<RdfQuad>

Returns a snapshot copy of all triples held by this resource.

getContacts

fun getContacts(): List<Contact>

Returns the Contact summaries for all members of this group (vcard:hasMember).

getContentType

open override fun getContentType(): String

The media type of the resource representation (the value of its Content-Type).

getCreatedTime

fun getCreatedTime(): Long?

The creation time in epoch milliseconds, from this resource's own dcterms:created (then stat:ctime) triple, or null when neither is present.

getEntity

open override fun getEntity(): InputStream

Returns the resource representation as a byte stream.

getHeaders

open override fun getHeaders(): SolidHeaders

The HTTP headers associated with this resource (empty when constructed locally).

getIdentifier

open override fun getIdentifier(): String

The URI that identifies this resource on the pod.

getLastModified

fun getLastModified(): Long?

The last-modified time in epoch milliseconds. Prefers this resource's own dcterms:modified (then stat:mtime) triple and falls back to the Last-Modified header. null when none is present.

getMetadata

open override fun getMetadata(): SolidMetadata

getSize

fun getSize(): Long

The size of this resource in bytes (its Content-Length), or 0 when the server did not report one.

getTitle

fun getTitle(): String

Returns the group's display name (vcard:fn).

removeMember