Simple LODI : Simple Linked Open Data Interface(v2.1.0)

"Simple LODI” is a PHP program which can convert RDF data to various formats. It contributes to make Linked Data.

Input file extensions

• Turtle(.ttl)
• N-Triples(.nt)
• RDF/XML(.rdf/.xml)

Output file extensions:

• HTML(.html)
• RDF/XML(.rdf/.xml)
• JSON(.json)
• JSON-LD(.jsonld)
• Turtle(.ttl)
• Notation3(.n3)
• N-Triples(.nt)

Requirements:

• PHP 7.2.5 or later
• mod_rewrite

Examples

http://uedayou.net/simplelodi-v2/uedayou

HTML
http://uedayou.net/simplelodi-v2/uedayou.html

Turtle
http://uedayou.net/simplelodi-v2/uedayou.ttl

RDF/XML
http://uedayou.net/simplelodi-v2/uedayou.xml

JSON
http://uedayou.net/simplelodi-v2/uedayou.json

JSON-LD
http://uedayou.net/simplelodi-v2/uedayou.jsonld

Installation

(1) Download "simplelodi".

(2) Put it on your web server. You can change the folder name as you want.

(3) Put your RDF file(Turtle, RDF/XML or N-Triples) in src/data folder.

(4) Run your browser and enter the following URL:
http:// ... /your-folder-name/your-file-name(file name without the extension)

(5) You can get various kinds of files by adding the file-extension you want.

ex.

HTML
http://your-domain.com/your-folder-name/your-file-name.html

Turtle
http://your-domain.com/your-folder-name/your-file-name.ttl

RDF/XML
http://your-domain.com/your-folder-name/your-file-name.xml

JSON
http://your-domain.com/your-folder-name/your-file-name.json

JSON-LD
http://your-domain.com/your-folder-name/your-file-name.jsonld

How to deploy on Amazon Web Service

It can deploy on Amazon Web Service's serverless environments. It will be created like below:

Amazon API Gateway -- AWS Lambda

(1) Install AWS CLI and AWS SAM CLI

https://aws.amazon.com/cli/ https://aws.amazon.com/serverless/sam/

(2) Create the SAM package

Create the package of SAM by the following command.

$ sam package --template-file template.yaml --output-template-file packaged.yaml --s3-bucket [your_s3_bucket_for_aws_sam]

(3) Deploy

Deploy the package on AWS.

$ sam deploy --template-file packaged.yaml --capabilities CAPABILITY_IAM --stack-name [your_stack_name]

After completing deployment, The URL of API Gateway will be shown.

CloudFormation outputs from deployed stack
-------------------------------------------------------
Outputs
-------------------------------------------------------
Key                 SimpleLodiApi
Description         -
Value               https://xxxxxxxxxx.execute-api.[region].amazonaws.com/Prod/

Notice

If your Turtle file size is bigger than 10 kB, it may take a long time to load it. In this case, please convert your Turtle file to RDF/XML or N-Triples format in advance. And then please do it again.