public class ASTConstructIterator extends Object implements info.aduna.iteration.CloseableIteration<BigdataStatement,org.openrdf.query.QueryEvaluationException>
ConstructNode. Ground triples in the template are output immediately. Any non-ground triples are output iff they are fully (and validly) bound for a given solution. Blank nodes are scoped to a solution.
Note: This supports construct of quads, but the SPARQL grammar does not.
|Modifier and Type||Field and Description|
|Constructor and Description|
public static boolean flagToCheckNativeDistinctQuadsInvocationForJUnitTesting
public ASTConstructIterator(AST2BOpContext context, AbstractTripleStore tripleStore, ConstructNode construct, GraphPatternGroup<?> whereClause, Map<String,BigdataBNode> bnodesIn, info.aduna.iteration.CloseableIteration<org.openrdf.query.BindingSet,org.openrdf.query.QueryEvaluationException> src)
whereClause- The WHERE clause (used to identify construct templates which obviously produce DISTINCT triples).
bnodes- A mapping from bnode IDs to
BigdataBNodes that will be imposed (optional). This MUST be
nullwhen the top-level operation is a CONSTRUCT since the semantics of CONSTRUCT require that blank node ID assignments are scoped to the solution. However, when a DESCRIBE query is rewritten into a CONSTRUCT, the blank node identifier mappings must be scoped to the response graph. For a DESCRIBE that uses a recursive expansion (CBD, etc.), the blank node IDs must be scoped to the entire response, not just the individual DESCRIBE queries that are issued in support of the top-level DESCRIBE request.
src- The solutions that will be used to construct the triples.
public boolean hasNext() throws org.openrdf.query.QueryEvaluationException
public BigdataStatement next() throws org.openrdf.query.QueryEvaluationException
public void close() throws org.openrdf.query.QueryEvaluationException
public void remove() throws org.openrdf.query.QueryEvaluationException
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