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 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);
}