[
https://issues.apache.org/jira/browse/JENA-1112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Håvard Ottestad updated JENA-1112:
----------------------------------
Description:
This filter gets removed:
FILTER ( ! EXISTS { ?a foaf:accountName ?username } )
The filter is used to stop duplicate usernames.
Example java program below.
----------------------------------------------------------------
{code:title=Main.java|borderStyle=solid}
import org.apache.jena.graph.Node;
import org.apache.jena.graph.NodeFactory;
import org.apache.jena.sparql.core.Var;
import org.apache.jena.sparql.syntax.syntaxtransform.UpdateTransformOps;
import org.apache.jena.update.UpdateFactory;
import org.apache.jena.update.UpdateRequest;
import java.util.HashMap;
public class Main {
public static void main(String[] args) {
String original = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>
\n" +
"INSERT { \n" +
" [] foaf:accountName ?username .
\n" +
"} \n" +
"WHERE{ \n" +
" #### THIS FILTER GETS REMOVED WHEN I
TRANSFORM \n" +
" FILTER ( ! EXISTS { ?a foaf:accountName
?username } ) \n" +
"} ";
// The filter is used to stop duplicate usernames.
UpdateRequest updates = UpdateFactory.create(original);
System.out.println("--- ORIGINAL
---\n"+updates.toString()+"\n");
// set ?username to "test"
HashMap<Var, Node> varNodeHashMap = new HashMap<Var, Node>();
varNodeHashMap.put(Var.alloc("username"),
NodeFactory.createLiteral("test"));
//Transform
UpdateRequest transform = UpdateTransformOps.transform(updates,
varNodeHashMap);
System.out.println("--- TRANSFORMED
---\n"+transform.toString());
}
}
{code}
was:
This filter gets removed:
FILTER ( ! EXISTS { ?a foaf:accountName ?username } )
The filter is used to stop duplicate usernames.
Example java program below.
----------------------------------------------------------------
{code:title=Main.java|borderStyle=solid}
import org.apache.jena.graph.Node;
import org.apache.jena.graph.NodeFactory;
import org.apache.jena.sparql.core.Var;
import org.apache.jena.sparql.syntax.syntaxtransform.UpdateTransformOps;
import org.apache.jena.update.UpdateFactory;
import org.apache.jena.update.UpdateRequest;
import java.util.HashMap;
public class Main {
public static void main(String[] args) {
String original = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>
\n" +
"INSERT { \n" +
" [] foaf:accountName ?username .
\n" +
"} \n" +
"WHERE{ \n" +
" #### THIS FILTER GETS REMOVED WHEN I
TRANSFORM" +
" FILTER ( ! EXISTS { ?a foaf:accountName
?username } ) \n" +
"} ";
// The filter is used to stop duplicate usernames.
UpdateRequest updates = UpdateFactory.create(original);
System.out.println("--- ORIGINAL
---\n"+updates.toString()+"\n");
// set ?username to "test"
HashMap<Var, Node> varNodeHashMap = new HashMap<Var, Node>();
varNodeHashMap.put(Var.alloc("username"),
NodeFactory.createLiteral("test"));
//Transform
UpdateRequest transform = UpdateTransformOps.transform(updates,
varNodeHashMap);
System.out.println("--- TRANSFORMED
---\n"+transform.toString());
}
}
{code}
> UpdateTransformOps removes a filter expression
> ----------------------------------------------
>
> Key: JENA-1112
> URL: https://issues.apache.org/jira/browse/JENA-1112
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 3.0.1
> Reporter: Håvard Ottestad
> Priority: Critical
>
> This filter gets removed:
> FILTER ( ! EXISTS { ?a foaf:accountName ?username } )
> The filter is used to stop duplicate usernames.
> Example java program below.
> ----------------------------------------------------------------
> {code:title=Main.java|borderStyle=solid}
> import org.apache.jena.graph.Node;
> import org.apache.jena.graph.NodeFactory;
> import org.apache.jena.sparql.core.Var;
> import org.apache.jena.sparql.syntax.syntaxtransform.UpdateTransformOps;
> import org.apache.jena.update.UpdateFactory;
> import org.apache.jena.update.UpdateRequest;
> import java.util.HashMap;
> public class Main {
> public static void main(String[] args) {
> String original = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>
> \n" +
> "INSERT { \n" +
> " [] foaf:accountName ?username .
> \n" +
> "} \n" +
> "WHERE{ \n" +
> " #### THIS FILTER GETS REMOVED WHEN I
> TRANSFORM \n" +
> " FILTER ( ! EXISTS { ?a foaf:accountName
> ?username } ) \n" +
> "} ";
> // The filter is used to stop duplicate usernames.
> UpdateRequest updates = UpdateFactory.create(original);
> System.out.println("--- ORIGINAL
> ---\n"+updates.toString()+"\n");
> // set ?username to "test"
> HashMap<Var, Node> varNodeHashMap = new HashMap<Var, Node>();
> varNodeHashMap.put(Var.alloc("username"),
> NodeFactory.createLiteral("test"));
> //Transform
> UpdateRequest transform = UpdateTransformOps.transform(updates,
> varNodeHashMap);
> System.out.println("--- TRANSFORMED
> ---\n"+transform.toString());
> }
> }
> {code}
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