RDF API for PHP V0.9.3

Test: Set Operations


This example is part of the RAP - Rdf API for PHP documentation.


1. Generate and show two models

define("RDFAPI_INCLUDE_DIR", "./../api/");
include(RDFAPI_INCLUDE_DIR . "RDFAPI.php");

echo "<h3>1. Generate and show two MemModels</h3>";

// Create empty MemModel
$model = ModelFactory::getDefaultModel();
$model->setbaseURI("http://www.bizer.de");

$model2 = ModelFactory::getDefaultModel();
$model2->setbaseURI("http://www.bizer.de/zwei");

// Create Nodes and add statements to models
$myhomepage = new Resource("http://www.bizer.de/welcome.html");
$creator = new Resource("http://purl.org/dc/elements/1.1/creator");
$me = new Resource("mailto:chris@bizer.de");
$model->add(new Statement($myhomepage, $creator, $me));
$model2->add(new Statement($myhomepage, $creator, $me));

$creation_date = new Resource("http://www.example.org/terms/creation-date");
$August16 = new Literal("August 16, 2002");
$model->add(new Statement($myhomepage, $creation_date, $August16));
$model2->add(new Statement($myhomepage, $creation_date, $August16));

$language = new Resource("http://www.example.org/terms/language");
$deutsch = new Literal("Deutsch", "de");
$model->add(new Statement($myhomepage, $language, $deutsch));

$name = new Resource("http://www.example.org/terms/Name");
$chrisbizer = new Literal("Chris Bizer");
$model2->add(new Statement($me, $name, $chrisbizer));

// Output as Table
echo "<h5>Model 1</h5>";
$model->writeAsHtmlTable();
echo "<h5>Model 2</h5>";
$model2->writeAsHtmlTable();

Output:

Model 1

Base URI: http://www.bizer.de#

Size: 3

No.

Subject

Predicate

Object

1.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://purl.org/dc/elements/1.
1/creator

Resource: mailto:chris@bizer.de

2.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://www.example.org/terms/c
reation-date

Literal: August 16, 2002

3.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://www.example.org/terms/l
anguage

Literal: Deutsch (xml:lang="de")


Model 2

Base URI: http://www.bizer.de/zwei#

Size: 3

No.

Subject

Predicate

Object

1.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://purl.org/dc/elements/1.
1/creator

Resource: mailto:chris@bizer.de

2.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://www.example.org/terms/c
reation-date

Literal: August 16, 2002

3.

Resource: mailto:chris@bizer.de

Resource: http://www.example.org/terms/N
ame

Literal: Chris Bizer




2. Make some tests

echo "<h2>2. Make some tests</h2>";
echo "Test: Model 2 contains any statements from model 1 :".$model2->containsAny($model)."<p>";
echo "Test: Model 1 contains any statements from model 2 :".$model->containsAny($model2)."<p>";
echo "Test: Model 2 contains all statements from model 1 :".$model2->containsAll($model)."<p>";
echo "Test: Model 1 contains all statements from model 2 :".$model->containsAll($model2)."<p>";
echo "Test: Model 1 equals model 2 :".$model->equals($model2)."<p>";

Output:

Test: Model 2 contains any statements from model 1 :1

Test: Model 1 contains any statements from model 2 :1

Test: Model 2 contains all statements from model 1 :

Test: Model 1 contains all statements from model 2 :

Test: Model 1 equals model 2 :

3. Unite model 1 and model 2

echo "<h3>3. Unite model 1 and model 2</h3>";
$model3 =& $model->unite($model2);
$model3->writeAsHtmlTable();

Output:

Base URI: http://www.bizer.de#

Size: 4

No.

Subject

Predicate

Object

1.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://purl.org/dc/elements/1.
1/creator

Resource: mailto:chris@bizer.de

2.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://www.example.org/terms/c
reation-date

Literal: August 16, 2002

3.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://www.example.org/terms/l
anguage

Literal: Deutsch (xml:lang="de")

4.

Resource: mailto:chris@bizer.de

Resource: http://www.example.org/terms/N
ame

Literal: Chris Bizer

 

4. Intersect model 1 and model 2

echo "<h3>4. Intersect model 1 and model 2</h3>";
$model4 =& $model->intersect($model2);
$model4->writeAsHtmlTable();

Output:

Base URI: http://www.bizer.de#

Size: 2

No.

Subject

Predicate

Object

1.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://purl.org/dc/elements/1.
1/creator

Resource: mailto:chris@bizer.de

2.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://www.example.org/terms/c
reation-date

Literal: August 16, 2002

 

5. Substract model 2 from model 1

echo "<h3>5. Substract model 2 from model 1</h3>";
$model5 =& $model->subtract($model2);
$model5->writeAsHtmlTable();

Output:

Base URI: http://www.bizer.de#

Size: 1

No.

Subject

Predicate

Object

1.

Resource: http://www.bizer.de/welcome.ht
ml

Resource: http://www.example.org/terms/l
anguage

Literal: Deutsch (xml:lang="de")

 

6. Reify model 1

echo "<h3>6. Reify model 1</h3>";
$model6 =& $model->reify();
$model6->writeAsHtmlTable();

Output:

Base URI: http://www.bizer.de#

Size: 12

No.

Subject

Predicate

Object

1.

Blank Node: bNode1

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#type

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#Statement

2.

Blank Node: bNode1

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#subject

Resource: http://www.bizer.de/welcome.ht
ml

3.

Blank Node: bNode1

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#predicate

Resource: http://purl.org/dc/elements/1.
1/creator

4.

Blank Node: bNode1

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#object

Resource: mailto:chris@bizer.de

5.

Blank Node: bNode2

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#type

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#Statement

6.

Blank Node: bNode2

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#subject

Resource: http://www.bizer.de/welcome.ht
ml

7.

Blank Node: bNode2

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#predicate

Resource: http://www.example.org/terms/c
reation-date

8.

Blank Node: bNode2

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#object

Literal: August 16, 2002

9.

Blank Node: bNode3

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#type

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#Statement

10.

Blank Node: bNode3

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#subject

Resource: http://www.bizer.de/welcome.ht
ml

11.

Blank Node: bNode3

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#predicate

Resource: http://www.example.org/terms/l
anguage

12.

Blank Node: bNode3

RDF NS Node: http://www.w3.org/1999/02/2
2-rdf-syntax-ns#object

Literal: Deutsch (xml:lang="de")