Class ToChildBlockJoinQuery

Just like ToParentBlockJoinQuery, except this query joins in reverse: you provide a Lucene.Net.Search.Query matching parent documents and it joins down to child documents.

Note

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

Inheritance
object
Query
ToChildBlockJoinQuery
Inherited Members
Query.Boost
Query.ToString()
Namespace: Lucene.Net.Search.Join
Assembly: Lucene.Net.Join.dll
Syntax
public class ToChildBlockJoinQuery : Query

Constructors

ToChildBlockJoinQuery(Query, Filter, bool)

Create a ToChildBlockJoinQuery.

Declaration
public ToChildBlockJoinQuery(Query parentQuery, Filter parentsFilter, bool doScores)
Parameters
Type Name Description
Query parentQuery

Lucene.Net.Search.Query that matches parent documents
Filter parentsFilter

Lucene.Net.Search.Filter (must produce FixedBitSet per-segment, like FixedBitSetCachingWrapperFilter) identifying the parent documents.
bool doScores

True if parent scores should be calculated.

Methods

Clone()

Returns a clone of this query.

Declaration
public override object Clone()
Returns
Type Description
object
Overrides
Lucene.Net.Search.Query.Clone()

CreateWeight(IndexSearcher)

Expert: Constructs an appropriate Lucene.Net.Search.Weight implementation for this query.

Only implemented by primitive queries, which re-write to themselves.
Declaration
public override Weight CreateWeight(IndexSearcher searcher)
Parameters
Type Name Description
IndexSearcher searcher
Returns
Type Description
Weight
Overrides
Lucene.Net.Search.Query.CreateWeight(Lucene.Net.Search.IndexSearcher)

Equals(object)

Determines whether the specified object is equal to the current object.

Declaration
public override bool Equals(object obj)
Parameters
Type Name Description
object obj

The object to compare with the current object.
Returns
Type Description
bool

true if the specified object is equal to the current object; otherwise, false.
Overrides

ExtractTerms(ISet<Term>)

Expert: adds all terms occurring in this query to the terms set. Only works if this query is in its rewritten (Lucene.Net.Search.Query.Rewrite(Lucene.Net.Index.IndexReader)) form.

Declaration
public override void ExtractTerms(ISet<Term> terms)
Parameters
Type Name Description
ISet<Term> terms
Overrides
Exceptions
Type Condition
InvalidOperationException

If this query is not yet rewritten

GetHashCode()

Serves as the default hash function.

Declaration
public override int GetHashCode()
Returns
Type Description
int

A hash code for the current object.
Overrides
Lucene.Net.Search.Query.GetHashCode()

Rewrite(IndexReader)

Expert: called to re-write queries into primitive queries. For example, a Lucene.Net.Search.PrefixQuery will be rewritten into a Lucene.Net.Search.BooleanQuery that consists of Lucene.Net.Search.TermQuerys.

Declaration
public override Query Rewrite(IndexReader reader)
Parameters
Type Name Description
IndexReader reader
Returns
Type Description
Query
Overrides
Lucene.Net.Search.Query.Rewrite(Lucene.Net.Index.IndexReader)

ToString(string)

Prints a query to a string, with field assumed to be the default field and omitted.

Declaration
public override string ToString(string field)
Parameters
Type Name Description
string field
Returns
Type Description
string
Overrides