Difference between revisions of "Org.eclipse.higgins.js.pds.client API usage example"

Revision as of 14:41, 20 September 2011

{{#eclipseproject:technology.higgins|eclipse_custom_style.css}}

We show an example of calling getAttributes, calling setAttributes and then calling getAttributes a second time. In all cases we read/write the same two attributes in the nytimes.com namespace, bFirstName and phone.

Initial State

Contexts

NYTimes template

The template context http://azigo.com/sys/templates/nytimes.com contains (among other things) a class named "http://nytimes.com" that has the following mapping rules:

 :NYTimesPerson
     a       owl:Class ;
     rdfs:subClassOf <http://www.eclipse.org/higgins/ontologies/2010/6/higgins#Person> ;

rule #1:

     map:nameRule
             [ a       map:rolePathLiteral ;
               map:mappedAtt <http://www.w3.org/2006/vcard/ns#given-name> ;
               map:path <http://www.w3.org/2006/vcard/ns#n> ;
               map:predicate :bFirstName ;
               map:role <http://www.eclipse.org/higgins/ontologies/2010/6/persona#Buyer>
             ] ;

rule #2:

     map:relationshipsRule
             [ a       map:roleSameAs ;
               map:equivalentAttribute
                       fp:gender ;
               map:predicate :gender ;
               map:role <http://www.eclipse.org/higgins/ontologies/2010/6/persona#Ecommerce>
             ] ;

Flat Person (relevant sections only)

     map:relationshipsRule
             [ rdf:type map:roleLiteral ;
               map:mappedAtt <http://xmlns.com/foaf/0.1/gender> ;
               map:predicate :gender ;
               map:role map:roleParam
             ] .

call getAttributes()

Call

Example call to getAttributes (domain, audience, attributes[], where[], future)

• atts[0] := (http://nytimes#gender, false, nil) // a phone number
• atts[1] := (http://nytimes#bFirstName, false, nil) // "billing first name"
• getAttributes ("nytimes.com", nil, atts, nil, nil)

Execution

• context := getConnectionContext ()
  • result: context == http://azigo.com/ptrevithick/nytimes.com)
• call findRoles()
  • result:
    • ((p:eCommerce, (nytimes.com#gender, nil, nil))
    • (p:Buyer, (nytimes.com#gender, nil, nil)))
• call sortByRole()
  • result:
    • ((p:eCommerce, (nytimes.com#gender, nil, nil))
    • (p:Buyer, (nytimes.com#bFirstName, nil, nil)))
• Try to pull attributes from #me person in the nytimes.com
  • result: no result: the nytimes.com context doesn't yet exist
• Try to pull attributes from #me person in root context
  • call findPersonByRole()
  • result: nil (no persons found that match role)
  • result: no attribute/values found

call setAttributes()

Call

Example call to setAttributes (domain, attributes[])

• attVals[0] := (http://nytimes#gender, "female")
• attVals[1] := (http://nytimes#bFirstName, "Alice") // "billing first name"

• setAttributes ("nytimes.com", attvals[])

Execution

• context := getConnectionContext ()
  • result: context == http://azigo.com/ptrevithick/nytimes.com
• template := getConnectionTemplate ()
  • result: template == http://azigo.com/sys/template/nytimes.com
• Since context doesn't exist, create it from template
• newPersonRole := value of role attribute of Participant ContextPrototype
  • result: newPersonRole == p:Ecommerce
• attributes[] := extractAttributes ()
  • result: attributes[] == (http://nytimes.com#gender, http://nytimes.com#bFirstName)
• rolesAtts[] := findRoles()
  • result: rolesAtts[] == ((p:Byer, http://nytimes.com#bFirstName), (p:Ecommerce, http://nytimes.com#gender))
• sortByRole
  • result: rolesAtts[] == ((p:Byer, http://nytimes.com#bFirstName), (p:Ecommerce, http://nytimes.com#gender))
• person := http://azigo.com/ptrevithick/nytimes.com#me
• Since person doesn't exist we create the statements:
  • (subj=:me pred=rdf:type obj=persona:Person) in context
  • (subj=:me pred=p:role obj=(newPersonRole==persona:Ecommerce)) in context
• Loop[0] ra==(p:Ecommerce, http://nytimes.com#gender) // Loop: For every pair ra in rolesAtts...
  • targetPersons[] := findPersonsByRole (person, p:Ecommerce)
    • result: targetPersons[0] == <the :me person created above>; targetPersons[] is of size == 1
  • person == targetPersons[0]
  • partialAttVals[] := subsetAttVals ()
    • result: partialAttVals[] == (http://nytimes.com#gender, "female")
  • Loop: av==(http://nytimes.com#gender, "female")
    • class := getNamespace()
      • result: class=="http://nytimes.com"
    • latt : getLocalAtt()
      • result: latt=="phone"
    • rule := getRule (template=http://azigo.com/sys/template/nytimes.com, class=http://nytimes.com, att="gender")
      • result rule==(see "rule #2" in Initial State section above)
    • pushEvalRule(person=:me, rule, value[0]="female")
  • EndLoop
• Loop[1] ra==(p:Buyer, http://nytimes.com#bFirstName)
  • targetPersons[] := findPersonsByRole (person, p:Buyer)
    • result: targetPersons[] is of size == 0
  • create new person and set the value of its role to p:Buyer
  • add new person to newPersons[]
  • partialAttVals[] := subsetAttVals ()
    • result: partialAttVals[] == (http://nytimes.com#bFirstName, "Alice")
  • Loop: av==(http://nytimes.com#bFirstName, "Alice")
    • class := getNamespace()
      • result: class=="http://nytimes.com"
    • latt : getLocalAtt()
      • result: latt=="phone"
    • rule := getRule (template=http://azigo.com/sys/template/nytimes.com, class=http://nytimes.com, att="bFirstName")
      • result rule==(see "rule #1" in Initial State section above)
    • pushEvalRule(person=<new person>, rule, value[0]="Alice")
  • EndLoop
• EndLoop
• Loop for every person np in newPersons[]
  • result: add an h:correlation link from :me to <new person>

Final State

Red is newly created context