Package org.apache.lucene.sandbox.search

Class MultiRangeQuery

java.lang.Object

org.apache.lucene.search.Query

org.apache.lucene.sandbox.search.MultiRangeQuery

All Implemented Interfaces:

Cloneable

public abstract class MultiRangeQuery
extends Query
implements Cloneable

Abstract class for range queries involving multiple ranges against physical points such as IntPoints All ranges are logically ORed together

WARNING: This API is experimental and might change in incompatible ways in the next release.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MultiRangeQuery.Builder	A builder for multirange queries.
static class	MultiRangeQuery.RangeClause	Representation of a single clause in a MultiRangeQuery

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MultiRangeQuery(String field, int numDims, int bytesPerDim, List<MultiRangeQuery.RangeClause> rangeClauses)	Expert: create a multidimensional range query with multiple connected ranges

Method Summary

Modifier and Type	Method	Description
Weight	createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost)
boolean	equals(Object o)
int	getBytesPerDim()
String	getField()
int	getNumDims()
int	hashCode()
Query	rewrite(IndexReader reader)	Merges the overlapping ranges and returns unconnected ranges by calling mergeOverlappingRanges(java.util.List<org.apache.lucene.sandbox.search.MultiRangeQuery.RangeClause>, int)
protected abstract String	toString(int dimension, byte[] value)	Returns a string of a single value in a human-readable format for debugging.
String	toString(String field)
void	visit(QueryVisitor visitor)

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

classHash, sameClassAs, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiRangeQuery

protected MultiRangeQuery(String field,
                          int numDims,
                          int bytesPerDim,
                          List<MultiRangeQuery.RangeClause> rangeClauses)

Expert: create a multidimensional range query with multiple connected ranges

Parameters:

field - field name. must not be null.

rangeClauses - Range Clauses for this query

numDims - number of dimensions.

Method Detail

visit

public void visit(QueryVisitor visitor)

Specified by:

visit in class Query

rewrite

public Query rewrite(IndexReader reader)
              throws IOException

Merges the overlapping ranges and returns unconnected ranges by calling mergeOverlappingRanges(java.util.List<org.apache.lucene.sandbox.search.MultiRangeQuery.RangeClause>, int)

Overrides:

rewrite in class Query

Throws:

IOException

createWeight

public final Weight createWeight(IndexSearcher searcher,
                                 ScoreMode scoreMode,
                                 float boost)
                          throws IOException

Overrides:

createWeight in class Query

Throws:

IOException

getField

public String getField()

getNumDims

public int getNumDims()

getBytesPerDim

public int getBytesPerDim()

hashCode

public final int hashCode()

Specified by:

hashCode in class Query

equals

public final boolean equals(Object o)

Specified by:

equals in class Query

toString

public final String toString(String field)

Specified by:

toString in class Query

toString

protected abstract String toString(int dimension,
                                   byte[] value)

Returns a string of a single value in a human-readable format for debugging. This is used by Query.toString().

Parameters:

dimension - dimension of the particular value

value - single value, never null

Returns:

human readable value for debugging