com.bigdata.rdf.sparql.ast

Interface ConstructNode.Annotations

Enclosing class:

ConstructNode

public static interface ConstructNode.Annotations

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	DEFAULT_DISTINCT_QUADS
static boolean	DEFAULT_NATIVE_DISTINCT
static String	DISTINCT_QUADS Internal boolean property (default ) which is true when used internally for constructing sets of quads rather than sets of triples.
static String	NATIVE_DISTINCT Boolean property (default false) which is true iff a native DISTINCT ISPO filter should be applied (large cardinality is expected for the constructed graph).

Fields inherited from interface com.bigdata.rdf.sparql.ast.IQueryNode.Annotations

QUERY_HINTS

Fields inherited from interface com.bigdata.rdf.sparql.ast.IJoinNode.Annotations

DEFAULT_MINUS, DEFAULT_OPTIONAL, FILTERS, MINUS, OPTIONAL

Field Detail

NATIVE_DISTINCT

static final String NATIVE_DISTINCT

Boolean property (default false) which is true iff a native DISTINCT ISPO filter should be applied (large cardinality is expected for the constructed graph). When false, a JVM based DISTINCT ISPO filter will be applied.

Note: This can be set using either QueryHints.ANALYTIC or QueryHints.NATIVE_DISTINCT_SPO.

See Also:

CONSTRUCT should apply DISTINCT (s,p,o) filter , Constant Field Values

DISTINCT_QUADS

static final String DISTINCT_QUADS

Internal boolean property (default ) which is true when used internally for constructing sets of quads rather than sets of triples.

Note: This can only be set programmatically using ConstructNode.setDistinctQuads(boolean)

Note: When this property is set and mixed quads are detected or suspected then the NATIVE_DISTINCT property is ignored.

See Also:

CONSTRUCT should apply DISTINCT (s,p,o) filter , Constant Field Values

DEFAULT_NATIVE_DISTINCT

static final boolean DEFAULT_NATIVE_DISTINCT

See Also:

Constant Field Values

DEFAULT_DISTINCT_QUADS

static final boolean DEFAULT_DISTINCT_QUADS

See Also:

Constant Field Values