Package org.aksw.jenax.graphql.rdf.adapter

Class GraphQlDataProviderOverRdf

java.lang.Object

org.aksw.jenax.graphql.rdf.adapter.GraphQlDataProviderOverRdf

All Implemented Interfaces:

GraphQlDataProvider

public class GraphQlDataProviderOverRdf
extends Object
implements GraphQlDataProvider

JSON adapter over RDF

Field Summary

Fields

Modifier and Type	Field	Description
protected org.aksw.jenax.ron.RdfElementVisitor<com.google.gson.JsonElement>	converter
protected RdfGraphQlDataProvider	delegate

Constructor Summary

Constructors

Constructor	Description
GraphQlDataProviderOverRdf(RdfGraphQlDataProvider delegate, org.aksw.jenax.ron.RdfElementVisitor<com.google.gson.JsonElement> converter)

Method Summary

Modifier and Type	Method	Description
com.google.gson.JsonObject	getMetadata()	Metadata for this stream.
String	getName()	The name of the provider.
boolean	isSingle()	Whether this provider is expected to yield at most 1 result.
Stream<com.google.gson.JsonElement>	openStream()	A stream over the resulting items.
void	write(com.google.gson.stream.JsonWriter writer, com.google.gson.Gson gson)	Write the data of this provider to the given json writer

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

delegate

protected RdfGraphQlDataProvider delegate

converter

protected org.aksw.jenax.ron.RdfElementVisitor<com.google.gson.JsonElement> converter

Constructor Details

GraphQlDataProviderOverRdf

public GraphQlDataProviderOverRdf(RdfGraphQlDataProvider delegate,
 org.aksw.jenax.ron.RdfElementVisitor<com.google.gson.JsonElement> converter)

Method Details

getName

public String getName()

Description copied from interface: GraphQlDataProvider

The name of the provider. Usable as a key in the JSON result.

Specified by:

getName in interface GraphQlDataProvider

getMetadata

public com.google.gson.JsonObject getMetadata()

Description copied from interface: GraphQlDataProvider

Metadata for this stream.

Specified by:

getMetadata in interface GraphQlDataProvider

openStream

public Stream<com.google.gson.JsonElement> openStream()

Description copied from interface: GraphQlDataProvider

A stream over the resulting items.

Specified by:

openStream in interface GraphQlDataProvider

isSingle

public boolean isSingle()

Description copied from interface: GraphQlDataProvider

Whether this provider is expected to yield at most 1 result. The client can use this information to e.g. omit starting an array in the output. However, the data provider does not necessarily know whether this information is truthful. If a violation is encountered during runtime then an exception will be raised.

Specified by:

isSingle in interface GraphQlDataProvider

write

public void write(com.google.gson.stream.JsonWriter writer,
 com.google.gson.Gson gson)
           throws IOException

Description copied from interface: GraphQlDataProvider

Write the data of this provider to the given json writer

Specified by:

write in interface GraphQlDataProvider

Throws:

IOException