org.sindice.siren.search.node

Class TupleQuery

java.lang.Object

org.apache.lucene.search.Query

org.sindice.siren.search.node.NodeQuery

org.sindice.siren.search.node.TwigQuery

org.sindice.siren.search.node.TupleQuery

All Implemented Interfaces:

Cloneable

public class TupleQuery
extends TwigQuery

A NodeQuery that matches tuples, i.e., a boolean combination of NodeQuery having the same parent node.

Nested Class Summary

Nested classes/interfaces inherited from class org.sindice.siren.search.node.TwigQuery

TwigQuery.EmptyRootQuery, TwigQuery.TwigWeight

Field Summary

Fields inherited from class org.sindice.siren.search.node.TwigQuery

clauses

Fields inherited from class org.sindice.siren.search.node.NodeQuery

ancestor, levelConstraint, lowerBound, upperBound

Constructor Summary

Constructors

Constructor and Description
TupleQuery() Constructs an empty tuple.
TupleQuery(boolean disableCoord) Constructs an empty tuple query.
TupleQuery(int level) Constructs an empty tuple query at a given level.
TupleQuery(int level, boolean disableCoord) Constructs an empty tuple query.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(NodeBooleanClause clause) Adds a clause to a tuple query.
void	add(NodeQuery query, NodeBooleanClause.Occur occur) Adds a clause to a tuple query.
org.apache.lucene.search.Weight	createWeight(org.apache.lucene.search.IndexSearcher searcher)

Methods inherited from class org.sindice.siren.search.node.TwigQuery

addChild, addClause, addDescendant, addRoot, clauses, clone, equals, getClauses, getMaxClauseCount, getRoot, hashCode, iterator, rewrite, setAncestorPointer, setLevelConstraint, setMaxClauseCount, setNodeConstraint, toString

Methods inherited from class org.sindice.siren.search.node.NodeQuery

getDocsNodesAndPositionsEnum, getLevelConstraint, getNodeConstraint, setNodeConstraint

Methods inherited from class org.apache.lucene.search.Query

extractTerms, getBoost, setBoost, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

TupleQuery

public TupleQuery()

Constructs an empty tuple. By default, the level of the tuple query is 1.

Similarity.coord(int,int) is disabled by default.

TupleQuery

public TupleQuery(int level)

Constructs an empty tuple query at a given level.

Parameters:

disableCoord - disables Similarity.coord(int,int) in scoring.

TupleQuery

public TupleQuery(boolean disableCoord)

Constructs an empty tuple query. Similarity.coord(int,int) may be disabled in scoring, as appropriate. For example, this score factor does not make sense for most automatically generated queries, like WildcardQuery and FuzzyQuery.

Parameters:

disableCoord - disables Similarity.coord(int,int) in scoring.

TupleQuery

public TupleQuery(int level,
          boolean disableCoord)

Constructs an empty tuple query. Similarity.coord(int,int) may be disabled in scoring, as appropriate. For example, this score factor does not make sense for most automatically generated queries, like WildcardQuery and FuzzyQuery.

Parameters:

disableCoord - disables Similarity.coord(int,int) in scoring.

Method Detail

add

public void add(NodeQuery query,
       NodeBooleanClause.Occur occur)

Adds a clause to a tuple query.

Throws:

TooManyClauses - if the new number of clauses exceeds the maximum clause number

See Also:

TwigQuery.getMaxClauseCount()

add

public void add(NodeBooleanClause clause)

Adds a clause to a tuple query.

Throws:

TooManyClauses - if the new number of clauses exceeds the maximum clause number

See Also:

TwigQuery.getMaxClauseCount()

createWeight

public org.apache.lucene.search.Weight createWeight(org.apache.lucene.search.IndexSearcher searcher)
                                             throws IOException

Overrides:

createWeight in class TwigQuery

Throws:

IOException