org.apache.solr.search

Class DocSetBase

java.lang.Object

org.apache.solr.search.DocSetBase

All Implemented Interfaces:

DocSet

Direct Known Subclasses:

BitDocSet, DocSlice, HashDocSet, SortedIntDocSet

abstract class DocSetBase
extends java.lang.Object
implements DocSet

A base class that may be usefull for implementing DocSets

Constructor Summary

Constructors

Constructor and Description
DocSetBase()

Method Summary

Modifier and Type	Method and Description
void	add(int doc) Adds the specified document if it is not currently in the DocSet (optional operation).
void	addUnique(int doc) Adds a document the caller knows is not currently in the DocSet (optional operation).
DocSet	andNot(DocSet other) Returns the documents in this set that are not in the other set.
int	andNotSize(DocSet other) Returns the number of documents in this set that are not in the other set.
boolean	equals(java.lang.Object obj)
org.apache.lucene.util.OpenBitSet	getBits() Inefficient base implementation.
org.apache.lucene.search.Filter	getTopFilter() Returns a Filter for use in Lucene search methods, assuming this DocSet was generated from the top-level MultiReader that the Lucene search methods will be invoked with.
DocSet	intersection(DocSet other) Returns the intersection of this set with another set.
int	intersectionSize(DocSet other) Returns the number of documents of the intersection of this set with another set.
DocSet	union(DocSet other) Returns the union of this set with another set.
int	unionSize(DocSet other) Returns the number of documents of the union of this set with another set.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.solr.search.DocSet

exists, iterator, memSize, size

Constructor Detail

DocSetBase

DocSetBase()

Method Detail

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

add

public void add(int doc)

Description copied from interface: DocSet

Adds the specified document if it is not currently in the DocSet (optional operation).

Specified by:

add in interface DocSet

Throws:

SolrException - Base implementation does not allow modifications

See Also:

DocSet.addUnique(int)

addUnique

public void addUnique(int doc)

Description copied from interface: DocSet

Adds a document the caller knows is not currently in the DocSet (optional operation).

This method may be faster then add(doc) in some implementaions provided the caller is certain of the precondition.

Specified by:

addUnique in interface DocSet

Throws:

SolrException - Base implementation does not allow modifications

See Also:

DocSet.add(int)

getBits

public org.apache.lucene.util.OpenBitSet getBits()

Inefficient base implementation.

Specified by:

getBits in interface DocSet

Returns:

An OpenBitSet with the bit number of every docid set in the set.

See Also:

BitDocSet.getBits()

intersection

public DocSet intersection(DocSet other)

Description copied from interface: DocSet

Returns the intersection of this set with another set. Neither set is modified - a new DocSet is created and returned.

Specified by:

intersection in interface DocSet

Returns:

a DocSet representing the intersection

union

public DocSet union(DocSet other)

Description copied from interface: DocSet

Returns the union of this set with another set. Neither set is modified - a new DocSet is created and returned.

Specified by:

union in interface DocSet

Returns:

a DocSet representing the union

intersectionSize

public int intersectionSize(DocSet other)

Description copied from interface: DocSet

Returns the number of documents of the intersection of this set with another set. May be more efficient than actually creating the intersection and then getting it's size.

Specified by:

intersectionSize in interface DocSet

unionSize

public int unionSize(DocSet other)

Description copied from interface: DocSet

Returns the number of documents of the union of this set with another set. May be more efficient than actually creating the union and then getting it's size.

Specified by:

unionSize in interface DocSet

andNot

public DocSet andNot(DocSet other)

Description copied from interface: DocSet

Returns the documents in this set that are not in the other set. Neither set is modified - a new DocSet is created and returned.

Specified by:

andNot in interface DocSet

Returns:

a DocSet representing this AND NOT other

andNotSize

public int andNotSize(DocSet other)

Description copied from interface: DocSet

Returns the number of documents in this set that are not in the other set.

Specified by:

andNotSize in interface DocSet

getTopFilter

public org.apache.lucene.search.Filter getTopFilter()

Description copied from interface: DocSet

Returns a Filter for use in Lucene search methods, assuming this DocSet was generated from the top-level MultiReader that the Lucene search methods will be invoked with.

Specified by:

getTopFilter in interface DocSet