edu.stanford.smi.protegex.owl.model.query
Interface QueryResults

All Known Implementing Classes:

SPARQLQueryResults

public interface QueryResults

An object wrapping the results of a query. A query results in an Iterator of variable bindings, where each variable can be bound to an RDFObject.

Author:

Holger Knublauch

Method Summary

List	getVariables() Gets a list of all variables that have been declared in the query.
boolean	hasNext() Checks if there are more results available.
Map	next() Gets the next results, where each result is a Map from variables to bindings.

Method Detail

getVariables

public List getVariables()

Gets a list of all variables that have been declared in the query. The variables are the keys in the Maps returned by the next() method.

Returns:

a List of Objects (e.g. Strings)

See Also:

next()

hasNext

public boolean hasNext()

Checks if there are more results available.

Returns:

true if there are more results

next

public Map next()

Gets the next results, where each result is a Map from variables to bindings. This method can only be called as long as hasNext() delivers true.

Returns:

a Map (keys are the members of the getVariables() call).

See Also:

getVariables()