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使用SPIN API（http://topbraid.org/spin/api/）並使用示例代碼https://github.com/spinrdf/spinrdf/blob/master/src-examples/org/topbraid/spin/examples/SPINParsingExample.java我試圖添加對rdfs的處理：comment並旋轉：文本到示例。 Topbraid Composer免費版（TBC FE）確實允許在RDF中包含的每條SPIN規則發表一條評論。 TBC FE還可以通過sp：text屬性將SPIN SPARQL源代碼作爲xsd：string值進行選擇。我想在這個例子的擴展版本中做同樣的事情，然後將其轉移到我想要嵌入SPIN規則編輯的工作代碼中。在文本SPARQL語法和SPIN RDF詞彙之間進行轉換：如何添加rdfs：comment和sp：文本
這是我目前擴展的示例代碼版本。請忽略日誌警告。請注意，我在示例查詢（第54行）頂部插入的評論在輸出中靜默放置（輸出也包含在下面）。從上面的
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package mil.disa.dso.spo.a2i.nsc.sharing2025.raaDemo;
import org.topbraid.spin.arq.ARQ2SPIN;
import org.topbraid.spin.arq.ARQFactory;
import org.topbraid.spin.model.Select;
import org.topbraid.spin.system.SPINModuleRegistry;
import org.apache.jena.query.Query;
import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.ModelFactory;
import org.apache.jena.rdf.model.Property;
import org.apache.jena.util.FileUtils;
import org.apache.jena.vocabulary.RDF;
/**
* Converts between textual SPARQL representation and SPIN RDF model.
*
* @author Holger Knublauch
*/
public class SPINParsingExample {
/**
* @param args
*/
public static void main(String[] args) {
// Register system functions (such as sp:gt (>))
SPINModuleRegistry.get().init();
// Create an empty OntModel importing SP
Model model = ModelFactory.createDefaultModel();
model.setNsPrefix("rdf", RDF.getURI());
model.setNsPrefix("ex", "http://example.org/demo#");
String query =
"# This is an example SPARQL comment\n" +
"SELECT ?person\n" +
"WHERE {\n" +
" ?person a ex:Person .\n" +
" ?person ex:age ?age .\n" +
" FILTER (?age > 18) .\n" +
"}";
System.out.println("Original SPARQL query string:\n\n" + query);
Query arqQuery = ARQFactory.get().createQuery(model, query);
ARQ2SPIN arq2SPIN = new ARQ2SPIN(model);
Select spinQuery = (Select) arq2SPIN.createQuery(arqQuery, null);
// TODO what about the sp:text? It's not in the artifacts printed below...
// TODO figure out how to add a comment to the tokenized query... does not propagate from source string above
// perhaps this is through and addProperty call to add an rdfs:comment?? many calls, not clear how to use...
// get javadoc?
System.out.println("\n-----");
System.out.println("SPIN query in Turtle:\n");
model.write(System.out, FileUtils.langTurtle);
System.out.println("\n-----");
System.out.println("SPIN query in XML:\n");
model.write(System.out, FileUtils.langXML);
System.out.println("\n-----");
String str = spinQuery.toString();
System.out.println("SPIN query:\n\n" + str);
// Now turn it back into a Jena Query
Query parsedBack = ARQFactory.get().createQuery(spinQuery);
System.out.println("Jena query:\n" + parsedBack);
}
}
輸出...
log4j:WARN No appenders could be found for logger (Jena).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Original SPARQL query string:
# This is an example SPARQL comment
SELECT ?person
WHERE {
?person a ex:Person .
?person ex:age ?age .
FILTER (?age > 18) .
}
-----
SPIN query in Turtle:
@prefix ex: <http://example.org/demo#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix sp: <http://spinrdf.org/sp#> .
[ a sp:Select ;
sp:resultVariables ([ sp:varName "person" ]
) ;
sp:where ([ sp:object ex:Person ;
sp:predicate rdf:type ;
sp:subject [ sp:varName "person" ]
]
[ sp:object [ sp:varName "age" ] ;
sp:predicate ex:age ;
sp:subject [ sp:varName "person" ]
]
[ a sp:Filter ;
sp:expression [ a sp:gt ;
sp:arg1 [ sp:varName "age" ] ;
sp:arg2 18
]
]
)
] .
-----
SPIN query in XML:
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:ex="http://example.org/demo#"
xmlns:sp="http://spinrdf.org/sp#">
<sp:Select>
<sp:resultVariables rdf:parseType="Collection">
<rdf:Description>
<sp:varName>person</sp:varName>
</rdf:Description>
</sp:resultVariables>
<sp:where rdf:parseType="Collection">
<rdf:Description>
<sp:object rdf:resource="http://example.org/demo#Person"/>
<sp:predicate rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#type"/>
<sp:subject rdf:parseType="Resource">
<sp:varName>person</sp:varName>
</sp:subject>
</rdf:Description>
<rdf:Description>
<sp:object rdf:parseType="Resource">
<sp:varName>age</sp:varName>
</sp:object>
<sp:predicate rdf:resource="http://example.org/demo#age"/>
<sp:subject rdf:parseType="Resource">
<sp:varName>person</sp:varName>
</sp:subject>
</rdf:Description>
<sp:Filter>
<sp:expression>
<sp:gt>
<sp:arg2 rdf:datatype="http://www.w3.org/2001/XMLSchema#integer"
>18</sp:arg2>
<sp:arg1 rdf:parseType="Resource">
<sp:varName>age</sp:varName>
</sp:arg1>
</sp:gt>
</sp:expression>
</sp:Filter>
</sp:where>
</sp:Select>
</rdf:RDF>
-----
SPIN query:
SELECT ?person
WHERE {
?person a ex:Person .
?person ex:age ?age .
FILTER (?age > 18) .
}
Jena query:
SELECT ?person
WHERE
{ ?person a <http://example.org/demo#Person> ;
<http://example.org/demo#age> ?age
FILTER (?age > 18)
}
我敢肯定，有一個方法來添加一個RDFS：註釋的源代碼（通過SP：文字）到RDF，但我還沒有找到它。我懷疑可以通過示例（第66行）中的spinQuery實例化來調用Select類的方法，但我不知道如何。任何指針將不勝感激。
此問題與我之前回答的問題How to turn a SPARQL/SPIN query/rule into an RDF structure from Java?有關，但專注於RDF中的註釋和源代碼。
，我一直在尋找的關鍵語句是'select1.addProperty（RDFS.comment， 「註釋1」） ;'謝謝！ –