memesearch

.gitignore

.venv/
*~
*.pyc

convert_rdf.py

from rdflib import Graph
import sys


if __name__ == '__main__':
    if len(sys.argv) == 3:
        file = sys.stdin
        in_format = sys.argv[1]
        out_format = sys.argv[2]
        graph = Graph().parse(file=file, publicID="http://example.com/", format=in_format)
    else:
        in_uri = sys.argv[1]
        in_format = sys.argv[2]
        out_format = sys.argv[3]
        graph = Graph().parse(in_uri, publicID="http://example.com/", format=in_format)

    print graph.serialize(format=out_format),

frame_jsonld.py

from pyld import jsonld
import sys
import json
graph = json.load(sys.stdin)
frame = json.load(open(sys.argv[1]))

print json.dumps(jsonld.frame(graph, frame), indent=2)

index.frame.json

{
    "@context": {
	"@vocab": "http://www.w3.org/ns/hydra/core#",
	"meme": "http://example.com/vocab/meme#",
	"schema": "http://schema.org/",
	"search": "meme:search",
	"recent": "meme:recent",
	"title": "schema:title"
    },
    "@type": "meme:IndexPage",
    "search": {
	"@type": "meme:SearchTemplate"
    }
}

index.json

{
  "@context": {
    "meme": "http://example.com/vocab/meme#", 
    "search": "meme:search", 
    "@vocab": "http://www.w3.org/ns/hydra/core#", 
    "title": "schema:title", 
    "recent": "meme:recent", 
    "schema": "http://schema.org/"
  }, 
  "@graph": [
    {
      "search": {
        "@id": "_:b1", 
        "@type": [
          "IriTemplate", 
          "meme:SearchTemplate"
        ], 
        "template": {
          "@id": "http://example.com/search{?q}"
        }, 
        "mapping": {
          "variable": "q", 
          "property": {
            "@id": "http://www.w3.org/ns/hydra/core#freetextQuery"
          }, 
          "@id": "_:b2", 
          "@type": "IriTemplateMapping"
        }
      }, 
      "title": {
        "@value": "Meme Search", 
        "@language": "en"
      }, 
      "@id": "http://example.com/", 
      "@type": [
        "Resource", 
        "schema:WebPage", 
        "meme:IndexPage", 
        "EntryPoint"
      ], 
      "recent": {
        "member": [
          {
            "@id": "http://example.com/8WcPWyY"
          }, 
          {
            "schema:image": {
              "@id": "http://example.com/6urDWca.png"
            }, 
            "@id": "http://example.com/6urDWca", 
            "@type": [
              "meme:Meme", 
              "Link", 
              "meme:RecentMeme", 
              "schema:CreativeWork"
            ]
          }, 
          {
            "@id": "http://example.com/invents-rdf"
          }
        ], 
        "@id": "_:b0", 
        "@type": "Collection"
      }
    }
  ]
}

index.ttl

@prefix meme: <http://example.com/vocab/meme#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix schema: <http://schema.org/> .
@prefix hydra: <http://www.w3.org/ns/hydra/core#> .

# Index Page
<./>
    rdf:type meme:IndexPage ;
    rdf:type schema:WebPage ;
    rdf:type hydra:Resource ;
    schema:title "Meme Search"@en .

# Search Template
<./>
    meme:search _:b1 .
_:b1
    rdf:type meme:SearchTemplate ;
    rdf:type hydra:IriTemplate ;
    hydra:mapping _:b2 ;
    hydra:template <search{?q}> .
_:b2
    rdf:type hydra:IriTemplateMapping ;
    hydra:variable "q" ;
    hydra:property hydra:freetextQuery .

# Recent Meme
<./>
    meme:recent _:b0 .
_:b0 
    rdf:type hydra:Collection ;
    hydra:member <6urDWca> ;
    hydra:member <invents-rdf> ;
    hydra:member <8WcPWyY> .
<6urDWca>    
    rdf:type meme:RecentMeme ;
    rdf:type meme:Meme ;
    rdf:type schema:CreativeWork ;
    rdf:type hydra:Link ;
    schema:image <6urDWca.png> .

Makefile

all: index.json

deps:
	pip install -r requirements.txt

clean:
	rm index.json

index.json:
	python convert_rdf.py index.ttl turtle json-ld | python frame_jsonld.py ./index.frame.json > index.json

requirements.txt

pyld
rdflib==4.1.0
-e git+https://github.com/RDFLib/rdflib-jsonld.git@e5c4b5f6f4de1e79c93503c0b28d87934a674da1#egg=rdflib_jsonld-master
-e git+https://github.com/edsu/rdflib-microdata.git@2b2eb632a3407bf889d03e1c3dde8657d56c5c6e#egg=rdflib_microdata-master