public override void Run(SelectableSource source, QueryResultSink resultsink)
{
if (!(query is SelectQuery))
throw new InvalidOperationException("Only SELECT queries are supported by this method (" + query.GetType() + ").");
// Perform the query
SelectQuery squery = (SelectQuery)query;
RdfSourceWrapper sourcewrapper = BindLogic(source);
RdfBindingSet results;
try {
results = squery.execute(sourcewrapper);
} catch (name.levering.ryan.sparql.common.QueryException e) {
throw new QueryExecutionException("Error executing query: " + e.Message, e);
}
// Prepare binding objects
java.util.List vars = results.getVariables();
SparqlVariable[] svars = new SparqlVariable[vars.size()];
SemWebVariable[] vars2 = new SemWebVariable[vars.size()];
for (int i = 0; i < svars.Length; i++) {
svars[i] = (SparqlVariable)vars.get(i);
vars2[i] = new SemWebVariable(svars[i].getName());
}
// Initialize the result sink
resultsink.Init(vars2); // set distinct and ordered
// Set the comments
resultsink.AddComments(queryString + "\n");
resultsink.AddComments(sourcewrapper.GetLog());
// Iterate the bindings
java.util.Iterator iter = results.iterator();
long ctr = -1, ctr2 = 0;
while (iter.hasNext()) {
RdfBindingRow row = (RdfBindingRow)iter.next();
// Since SPARQL processing may be lazy-delayed,
// add any new comments that might have been logged.
resultsink.AddComments(sourcewrapper.GetLog());
ctr++;
if (ctr < ReturnStart && ReturnStart != -1) continue;
Resource[] bindings = new Resource[vars2.Length];
for (int i = 0; i < bindings.Length; i++) {
Resource r = sourcewrapper.ToResource(row.getValue(svars[i]));
r = sourcewrapper.Persist(r);
bindings[i] = r;
}
resultsink.AddComments(sourcewrapper.GetLog());
resultsink.Add(new VariableBindings(vars2, bindings));
ctr2++;
if (ctr2 >= ReturnLimit && ReturnLimit != -1) break;
}
resultsink.AddComments(sourcewrapper.GetLog());
// Close the result sink.
resultsink.Finished();
}
public override void Run(SelectableSource source, QueryResultSink resultsink)
{
if (!(query is SelectQuery))
{
throw new InvalidOperationException("Only SELECT queries are supported by this method (" + query.GetType() + ").");
}
// Perform the query
SelectQuery squery = (SelectQuery)query;
RdfSourceWrapper sourcewrapper = new RdfSourceWrapper(source, QueryMeta, this);
MyLogicFactory logic = new MyLogicFactory();
foreach (RdfFunction f in extFunctions)
{
logic.registerExternalFunction(
new URIWrapper(f.Uri),
new ExtFuncWrapper(sourcewrapper, f));
}
squery.bindLogic(logic);
RdfBindingSet results;
try {
results = squery.execute(sourcewrapper);
} catch (java.lang.Exception e) {
throw new QueryExecutionException("Error executing query: " + e.Message, e);
}
// Prepare binding objects
java.util.List vars = results.getVariables();
VariableBinding[] bindings = new VariableBinding[vars.size()];
SparqlVariable[] svars = new SparqlVariable[vars.size()];
SemWebVariable[] vars2 = new SemWebVariable[vars.size()];
for (int i = 0; i < bindings.Length; i++)
{
svars[i] = (SparqlVariable)vars.get(i);
vars2[i] = new SemWebVariable(svars[i].getName());
bindings[i] = new VariableBinding(vars2[i], null);
}
// Initialize the result sink
resultsink.Init(bindings, false, false); // set distinct and ordered
// Set the comments
resultsink.AddComments(queryString + "\n");
resultsink.AddComments(sourcewrapper.GetLog());
// Iterate the bindings
java.util.Iterator iter = results.iterator();
long ctr = -1, ctr2 = 0;
while (iter.hasNext())
{
RdfBindingRow row = (RdfBindingRow)iter.next();
// Since SPARQL processing may be lazy-delayed,
// add any new comments that might have been logged.
resultsink.AddComments(sourcewrapper.GetLog());
ctr++;
if (ctr < ReturnStart && ReturnStart != -1)
{
continue;
}
for (int i = 0; i < bindings.Length; i++)
{
Resource r = sourcewrapper.ToResource(row.getValue(svars[i]));
r = sourcewrapper.Persist(r);
bindings[i] = new VariableBinding(bindings[i].Variable, r);
}
resultsink.AddComments(sourcewrapper.GetLog());
resultsink.Add(bindings);
ctr2++;
if (ctr2 >= ReturnLimit && ReturnLimit != -1)
{
break;
}
}
resultsink.AddComments(sourcewrapper.GetLog());
// Close the result sink.
resultsink.Finished();
}
