public void InteropSemWebGraphQuery()
{
Graph g = new Graph();
FileLoader.Load(g, "InferenceTest.ttl");
GraphSource source = new GraphSource(g);
Console.WriteLine("Query for Cars and their Speeds");
Console.WriteLine();
SemWeb.Query.SparqlXmlQuerySink sink = new SemWeb.Query.SparqlXmlQuerySink(Console.Out);
Variable car = new Variable("car");
Statement[] graphPattern = new Statement[]
{
new Statement(car, new Entity(RdfSpecsHelper.RdfType), new Entity("http://example.org/vehicles/Car")),
new Statement(car, new Entity("http://example.org/vehicles/Speed"), new Variable("speed"))
};
source.Query(graphPattern, new SemWeb.Query.QueryOptions(), sink);
Console.WriteLine("Query for the 1st Car and it's Speed");
Console.WriteLine();
sink = new SemWeb.Query.SparqlXmlQuerySink(Console.Out);
graphPattern = new Statement[]
{
new Statement(car, new Entity(RdfSpecsHelper.RdfType), new Entity("http://example.org/vehicles/Car")),
new Statement(car, new Entity("http://example.org/vehicles/Speed"), new Variable("speed"))
};
SemWeb.Query.QueryOptions options = new SemWeb.Query.QueryOptions();
options.Limit = 1;
source.Query(graphPattern, options, sink);
}
public override void Query(Statement[] graph, SemWeb.Query.QueryOptions options, SelectableSource targetModel, QueryResultSink result)
{
SemWeb.Query.GraphMatch q = new SemWeb.Query.GraphMatch();
foreach (Statement s in graph)
{
q.AddGraphStatement(s);
}
q.ReturnLimit = options.Limit;
if (options.VariableKnownValues != null)
{
#if !DOTNET2
foreach (DictionaryEntry ent in options.VariableKnownValues)
{
q.SetVariableRange((Variable)ent.Key, (ICollection)ent.Value);
}
#else
foreach (KeyValuePair <Variable, ICollection <Resource> > ent in options.VariableKnownValues)
{
q.SetVariableRange(ent.Key, ent.Value);
}
#endif
}
if (options.VariableLiteralFilters != null)
{
#if !DOTNET2
foreach (DictionaryEntry ent in options.VariableLiteralFilters)
{
foreach (LiteralFilter filter in (ICollection)ent.Value)
{
q.AddLiteralFilter((Variable)ent.Key, filter);
}
}
#else
foreach (KeyValuePair <Variable, ICollection <LiteralFilter> > ent in options.VariableLiteralFilters)
{
foreach (LiteralFilter filter in ent.Value)
{
q.AddLiteralFilter(ent.Key, filter);
}
}
#endif
}
if (options.DistinguishedVariables != null)
{
foreach (Variable v in options.DistinguishedVariables)
{
q.SetDistinguishedVariable(v);
}
}
q.Run(targetModel, result);
}
public static void Main(string[] args)
{
System.Net.ServicePointManager.Expect100Continue = false;
Opts opts = new Opts();
opts.ProcessArgs(args);
if (opts.RemainingArguments.Length != 1)
{
opts.DoHelp();
return;
}
string baseuri = "query://query/#";
QueryResultSink qs;
if (opts.format == "simple")
{
qs = new PrintQuerySink();
}
else if (opts.format == "html")
{
qs = new HTMLQuerySink(Console.Out);
}
else if (opts.format == "xml")
{
qs = new SparqlXmlQuerySink(Console.Out);
}
else if (opts.format == "lubm")
{
qs = new LUBMReferenceAnswerOutputQuerySink();
}
else if (opts.format == "csv")
{
qs = new CSVQuerySink();
}
else
{
Console.Error.WriteLine("Invalid output format.");
return;
}
Query query;
MemoryStore queryModel = null;
#if !DOTNET2
System.Collections.ICollection queryModelVars = null;
#else
System.Collections.Generic.ICollection <Variable> queryModelVars = null;
#endif
Store model = Store.Create(opts.RemainingArguments[0]);
if (opts.type == "rsquary")
{
RdfReader queryparser = RdfReader.Create("n3", "-");
queryparser.BaseUri = baseuri;
queryModel = new MemoryStore(queryparser);
queryModelVars = queryparser.Variables;
query = new GraphMatch(queryModel);
}
else if (opts.type == "sparql" && model.DataSources.Count == 1 && model.DataSources[0] is SemWeb.Remote.SparqlSource)
{
string querystring = Console.In.ReadToEnd();
((SemWeb.Remote.SparqlSource)model.DataSources[0]).RunSparqlQuery(querystring, Console.Out);
return;
}
else if (opts.type == "sparql")
{
string querystring = Console.In.ReadToEnd();
query = new SparqlEngine(querystring);
}
else
{
throw new Exception("Invalid query format: " + opts.type);
}
if (opts.limit > 0)
{
query.ReturnLimit = opts.limit;
}
//Console.Error.WriteLine(query.GetExplanation());
if (query is SparqlEngine && ((SparqlEngine)query).Type != SparqlEngine.QueryType.Select)
{
SparqlEngine sparql = (SparqlEngine)query;
sparql.Run(model, Console.Out);
}
else if (model is QueryableSource && queryModel != null)
{
SemWeb.Query.QueryOptions qopts = new SemWeb.Query.QueryOptions();
qopts.DistinguishedVariables = queryModelVars;
// Replace bnodes in the query with Variables
int bnodectr = 0;
foreach (Entity e in queryModel.GetEntities())
{
if (e is BNode && !(e is Variable))
{
BNode b = (BNode)e;
queryModel.Replace(e, new Variable(b.LocalName != null ? b.LocalName : "bnodevar" + (++bnodectr)));
}
}
model.Query(queryModel.ToArray(), qopts, qs);
}
else
{
query.Run(model, qs);
}
if (qs is IDisposable)
{
((IDisposable)qs).Dispose();
}
}
public override MetaQueryResult MetaQuery(Statement[] graph, SemWeb.Query.QueryOptions options, SelectableSource source)
{
SemWeb.Query.MetaQueryResult ret = new SemWeb.Query.MetaQueryResult();
ret.QuerySupported = true;
ret.NoData = new bool[graph.Length];
for (int i = 0; i < graph.Length; i++)
{
// Take this statement and replace variables by nulls
// to make it a statement template.
Statement st = graph[i];
for (int j = 0; j < 4; j++)
{
if (st.GetComponent(j) is Variable)
{
st.SetComponent(j, null);
}
}
// See if the store contains this template.
if (st != Statement.All && !source.Contains(st))
{
ret.NoData[i] = true;
continue;
}
// Process it further in case we have variables
// with known values, in which case if none of the
// known values is in the store, we also know this
// statement is unanswerable.
for (int j = 0; j < 4; j++)
{
Resource r = graph[i].GetComponent(j);
// No need to check the following given the check above.
//if (r != null && !(r is Variable) && !source.Contains(r))
// ret.NoData[i] = true;
if (r != null && r is Variable && options.VariableKnownValues != null &&
#if !DOTNET2
options.VariableKnownValues.Contains((Variable)r)
#else
options.VariableKnownValues.ContainsKey((Variable)r)
#endif
)
{
bool found = false;
#if !DOTNET2
foreach (Resource s in (ICollection)options.VariableKnownValues[(Variable)r])
{
#else
foreach (Resource s in (ICollection <Resource>)options.VariableKnownValues[(Variable)r])
{
#endif
if (source.Contains(s))
{
found = true;
break;
}
}
if (!found)
{
ret.NoData[i] = true;
}
}
}
}
return(ret);
}
public void InteropSemWebGraphQuery()
{
Graph g = new Graph();
FileLoader.Load(g, "InferenceTest.ttl");
GraphSource source = new GraphSource(g);
Console.WriteLine("Query for Cars and their Speeds");
Console.WriteLine();
SemWeb.Query.SparqlXmlQuerySink sink = new SemWeb.Query.SparqlXmlQuerySink(Console.Out);
Variable car = new Variable("car");
Statement[] graphPattern = new Statement[]
{
new Statement(car, new Entity(RdfSpecsHelper.RdfType), new Entity("http://example.org/vehicles/Car")),
new Statement(car, new Entity("http://example.org/vehicles/Speed"), new Variable("speed"))
};
source.Query(graphPattern, new SemWeb.Query.QueryOptions(), sink);
Console.WriteLine("Query for the 1st Car and it's Speed");
Console.WriteLine();
sink = new SemWeb.Query.SparqlXmlQuerySink(Console.Out);
graphPattern = new Statement[]
{
new Statement(car, new Entity(RdfSpecsHelper.RdfType), new Entity("http://example.org/vehicles/Car")),
new Statement(car, new Entity("http://example.org/vehicles/Speed"), new Variable("speed"))
};
SemWeb.Query.QueryOptions options = new SemWeb.Query.QueryOptions();
options.Limit = 1;
source.Query(graphPattern, options, sink);
}
public static void Main(string[] args)
{
System.Net.ServicePointManager.Expect100Continue = false;
Opts opts = new Opts();
opts.ProcessArgs(args);
if (opts.RemainingArguments.Length != 1) {
opts.DoHelp();
return;
}
string baseuri = "query://query/#";
QueryResultSink qs;
if (opts.format == "simple")
qs = new PrintQuerySink();
else if (opts.format == "html")
qs = new HTMLQuerySink(Console.Out);
else if (opts.format == "xml")
qs = new SparqlXmlQuerySink(Console.Out);
else if (opts.format == "lubm")
qs = new LUBMReferenceAnswerOutputQuerySink();
else if (opts.format == "csv")
qs = new CSVQuerySink();
else {
Console.Error.WriteLine("Invalid output format.");
return;
}
Query query;
MemoryStore queryModel = null;
#if !DOTNET2
System.Collections.ICollection queryModelVars = null;
#else
System.Collections.Generic.ICollection<Variable> queryModelVars = null;
#endif
Store model = Store.Create(opts.RemainingArguments[0]);
if (opts.type == "rsquary") {
RdfReader queryparser = RdfReader.Create("n3", "-");
queryparser.BaseUri = baseuri;
queryModel = new MemoryStore(queryparser);
queryModelVars = queryparser.Variables;
query = new GraphMatch(queryModel);
} else if (opts.type == "sparql" && model.DataSources.Count == 1 && model.DataSources[0] is SemWeb.Remote.SparqlSource) {
string querystring = Console.In.ReadToEnd();
((SemWeb.Remote.SparqlSource)model.DataSources[0]).RunSparqlQuery(querystring, Console.Out);
return;
} else if (opts.type == "sparql") {
string querystring = Console.In.ReadToEnd();
query = new SparqlEngine(querystring);
} else {
throw new Exception("Invalid query format: " + opts.type);
}
if (opts.limit > 0)
query.ReturnLimit = opts.limit;
//Console.Error.WriteLine(query.GetExplanation());
if (query is SparqlEngine && ((SparqlEngine)query).Type != SparqlEngine.QueryType.Select) {
SparqlEngine sparql = (SparqlEngine)query;
sparql.Run(model, Console.Out);
} else if (model is QueryableSource && queryModel != null) {
SemWeb.Query.QueryOptions qopts = new SemWeb.Query.QueryOptions();
qopts.DistinguishedVariables = queryModelVars;
// Replace bnodes in the query with Variables
int bnodectr = 0;
foreach (Entity e in queryModel.GetEntities()) {
if (e is BNode && !(e is Variable)) {
BNode b = (BNode)e;
queryModel.Replace(e, new Variable(b.LocalName != null ? b.LocalName : "bnodevar" + (++bnodectr)));
}
}
model.Query(queryModel.ToArray(), qopts, qs);
} else {
query.Run(model, qs);
}
if (qs is IDisposable)
((IDisposable)qs).Dispose();
}