public ICollection <SADIService> getAllServices(int offset, int limit)
{
ICollection <SADIService> services = new List <SADIService>();
string query =
"PREFIX sadi: <http://sadiframework.org/ontologies/sadi.owl#> \r\n" +
"PREFIX mygrid: <http://www.mygrid.org.uk/mygrid-moby-service#> \r\n" +
"SELECT * \r\n" +
"WHERE {\r\n" +
" ?serviceURI a sadi:Service . \r\n" +
" ?serviceURI mygrid:hasServiceNameText ?name . \r\n"+
" ?serviceURI mygrid:hasServiceDescriptionText ?description . \r\n"+
" ?serviceURI mygrid:hasOperation ?op . \r\n"+
" ?op mygrid:inputParameter ?input . \r\n"+
" ?input a mygrid:parameter . \r\n"+
" ?input mygrid:objectType ?inputClassURI . \r\n"+
// instanceQuery is not optional here because we only want services
// whose input instances can be dynamically discovered...
" ?inputClassURI sadi:instanceQuery ?query . \r\n" +
"}";
foreach (JsonData binding in executeQuery(query))
{
SADIService service = new SADIService(
getSPARQLBindingAsString(binding, "serviceURI"),
getSPARQLBindingAsString(binding, "name"),
getSPARQLBindingAsString(binding, "description"),
getSPARQLBindingAsString(binding, "inputClassURI"));
service.inputInstanceQuery = getSPARQLBindingAsString(binding, "query");
services.Add(service);
}
return(services);
}
internal static String getDescription(SADIService service)
{
StringBuilder buf = new StringBuilder();
buf.Append(" (");
buf.Append(service.uri);
buf.Append(")\r\n ");
if (service.description != null)
{
buf.Append(service.description);
}
else
{
buf.Append("No description.");
}
if (service.properties.Count > 0)
{
buf.Append("\r\n properties attached: ");
foreach (PropertyRestriction r in service.properties)
{
buf.Append("\r\n ");
buf.Append(r.ToString());
}
}
return(buf.ToString());
}
public SADIService getService(string serviceURI)
{
string query =
"PREFIX sadi: <http://sadiframework.org/ontologies/sadi.owl#> \r\n" +
"PREFIX mygrid: <http://www.mygrid.org.uk/mygrid-moby-service#> \r\n" +
"SELECT * \r\n" +
"WHERE {\r\n" +
" ?serviceURI a sadi:Service . \r\n" +
" ?serviceURI mygrid:hasServiceNameText ?name . \r\n"+
" ?serviceURI mygrid:hasServiceDescriptionText ?description . \r\n"+
" ?serviceURI mygrid:hasOperation ?op . \r\n"+
" ?op mygrid:inputParameter ?input . \r\n"+
" ?input a mygrid:parameter . \r\n"+
" ?input mygrid:objectType ?inputClassURI . \r\n"+
// instanceQueryPattern is optional here because we're matching by
// direct type and there's no need for dynamic discovery...
" OPTIONAL { ?inputClassURI sadi:instanceQuery ?query } . \r\n" +
"}";
query = query.Replace("?serviceURI", "<" + serviceURI + ">");
foreach (JsonData binding in executeQuery(query))
{
SADIService service = new SADIService(
getSPARQLBindingAsString(binding, "serviceURI"),
getSPARQLBindingAsString(binding, "name"),
getSPARQLBindingAsString(binding, "description"),
getSPARQLBindingAsString(binding, "inputClassURI"));
service.inputInstanceQuery = getSPARQLBindingAsString(binding, "query");
return(service);
}
throw new ArgumentException(serviceURI + " is not a registered service");
}
public void addPropertyRestrictions(SADIService service)
{
if (service.properties.Count > 0)
{
SADIHelper.debug("SADIRegistry", "addPropertyRestrictions called twice on same service", service);
return;
}
String query =
"PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> \r\n" +
"PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> \r\n" +
"PREFIX owl: <http://www.w3.org/2002/07/owl#> \r\n" +
"PREFIX sadi: <http://sadiframework.org/ontologies/sadi.owl#> \r\n" +
"PREFIX mygrid: <http://www.mygrid.org.uk/mygrid-moby-service#> \r\n" +
"SELECT DISTINCT ?onPropertyURI ?onPropertyLabel ?valuesFromURI ?valuesFromLabel \r\n" +
"WHERE {\r\n" +
" <"+ service.uri + "> sadi:decoratesWith ?decoration . \r\n" +
" ?decoration owl:onProperty ?onPropertyURI . \r\n"+
" OPTIONAL { ?onPropertyURI rdfs:label ?onPropertyLabel } . \r\n"+
" OPTIONAL { \r\n"+
" ?decoration owl:someValuesFrom ?valuesFromURI . \r\n"+
" OPTIONAL { ?valuesFromURI rdfs:label ?valuesFromLabel } \r\n"+
" } . \r\n"+
"}";
foreach (JsonData binding in executeQuery(query))
{
service.addProperty(
getSPARQLBindingAsString(binding, "onPropertyURI"),
getSPARQLBindingAsString(binding, "onPropertyLabel"),
getSPARQLBindingAsString(binding, "valuesFromURI"),
getSPARQLBindingAsString(binding, "valuesFromLabel"));
}
}
internal void setService(SADIService service)
{
this.service = service;
string name = getName(service);
this.name.Text = getName(service);
this.description.Text = getDescription(service);
}
internal static String getName(SADIService service)
{
if (service.name != null)
{
return(service.name);
}
else
{
return("No name");
}
}
private MemoryStore assembleInput(IEnumerable <IResource> selectedNodes, SADIService service)
{
MemoryStore input = new MemoryStore();
foreach (IResource node in selectedNodes)
{
if (node is IEntity)
{
service.assembleInput(input, node as IEntity, KE);
}
}
return(input);
}
public ICollection <SADIService> findServicesByInputClass(ICollection <String> types)
{
ICollection <SADIService> services = new List <SADIService>();
if (types.Count == 0)
{
return(services);
}
string query =
"PREFIX sadi: <http://sadiframework.org/ontologies/sadi.owl#> \r\n" +
"PREFIX mygrid: <http://www.mygrid.org.uk/mygrid-moby-service#> \r\n" +
"SELECT * \r\n" +
"WHERE {\r\n" +
" ?serviceURI a sadi:Service . \r\n" +
" ?serviceURI mygrid:hasServiceNameText ?name . \r\n"+
" ?serviceURI mygrid:hasServiceDescriptionText ?description . \r\n"+
" ?serviceURI mygrid:hasOperation ?op . \r\n"+
" ?op mygrid:inputParameter ?input . \r\n"+
" ?input a mygrid:parameter . \r\n"+
" ?input mygrid:objectType ?inputClassURI . \r\n"+
// instanceQueryPattern is optional here because we're matching by
// direct type and there's no need for dynamic discovery...
" OPTIONAL { ?inputClassURI sadi:instanceQuery ?query } . \r\n";
int n = 0;
foreach (string type in types)
{
if (++n > 1)
{
query += " UNION \r\n";
}
query += " { ?input mygrid:objectType <"+ type + "> } \r\n";
}
query +=
"}";
foreach (JsonData binding in executeQuery(query))
{
SADIService service = new SADIService(
getSPARQLBindingAsString(binding, "serviceURI"),
getSPARQLBindingAsString(binding, "name"),
getSPARQLBindingAsString(binding, "description"),
getSPARQLBindingAsString(binding, "inputClassURI"));
service.inputInstanceQuery = getSPARQLBindingAsString(binding, "query");
services.Add(service);
}
return(services);
}
private bool checkForInputInstances(SADIService service, IEnumerable <IResource> selectedNodes)
{
if (service.inputInstanceQuery != null)
{
string query = SADIHelper.convertConstructQuery(service.inputInstanceQuery);
if (query != null)
{
foreach (ISPARQLResult result in KE.Graph.Query(query).Results)
{
foreach (IResource node in selectedNodes)
{
if (node.Equals(result["input"]))
{
return(true);
}
}
}
}
}
return(false);
}
private void InvokeServicesWorker_DoWork(object threadContext)
{
ServiceCallStatus call = threadContext as ServiceCallStatus;
SADIService service = call.Data as SADIService;
try
{
call.Status = "Assembling input";
MasterWorker.ReportProgress(1, call);
MemoryStore input = assembleInput(SelectedNodes, service);
call.Status = "Calling service";
call.Data = "Assembled input:\r\n" + SemWebHelper.storeToString(input);
MasterWorker.ReportProgress(33, call);
Store output = service.invokeService(input);
call.Status = "Storing output";
call.Data = "Received output:\r\n" + SemWebHelper.storeToString(output);
MasterWorker.ReportProgress(66, call);
ICollection <IStatement> statements = KE.Import(output);
showNewStatements(statements);
call.Status = "Done";
call.Data = service;
MasterWorker.ReportProgress(100, call);
}
catch (Exception err)
{
SADIHelper.error("ServiceCall", "error calling service", service, err);
call.Status = "Error";
call.Data = "Error:\r\n" + err.Message;
MasterWorker.ReportProgress(100, call);
}
finally
{
Interlocked.Decrement(ref NumWorkers);
}
}
