com.bigdata.rdf.sparql.ast.eval

Class CBD

java.lang.Object

com.bigdata.rdf.sparql.ast.eval.CBD

public class CBD
extends Object

Utility class for computing the Concise Bounded Description.

Author:

Bryan Thompson FIXME Watch a timeout on the top-level query (if present)

See Also:

Concise Bounded Description , CBD - Concise Bounded Description , ASTDescribeOptimizer, ASTConstructIterator

Constructor Summary

Constructors

Constructor and Description
CBD(AbstractTripleStore store, DescribeModeEnum describeMode, int describeIterationLimit, int describeStatementLimit, Map<String,BigdataBNode> bnodes)

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CBD

public CBD(AbstractTripleStore store,
   DescribeModeEnum describeMode,
   int describeIterationLimit,
   int describeStatementLimit,
   Map<String,BigdataBNode> bnodes)

Parameters:

store - The AbstractTripleStore.

describeMode - The DescribeModeEnum specifying how to evaluate the DESCRIBE query.

describeIterationLimit - The limit on the #of iterations (iff the statement limit is also reached) -or- ZERO (0) for no limit.

describeStatementLimit - The limit on the #of statements (iff the iteration limit is also reached) -or- ZERO (0) for no limit..

bnodes - A mapping that is used to preserve a consistent assignment from blank node IDs to BigdataBNodes scoped to the subgraph reported by the top-level DESCRIBE query.