The Query type exposes the following members.

Constructors

  NameDescription
Protected methodQuery
Initializes a new instance of the Query class

Methods

  NameDescription
Public methodClone
Returns a clone of this query.
Public methodCombine
Expert: called when re-writing queries under MultiSearcher. Create a single query suitable for use by all subsearchers (in 1-1 correspondence with queries). This is an optimization of the OR of all queries. We handle the common optimization cases of equal queries and overlapping clauses of boolean OR queries (as generated by MultiTermQuery.rewrite()). Be careful overriding this method as queries[0] determines which method will be called and is not necessarily of the same type as the other queries.
Public methodCreateWeight
Expert: Constructs an appropriate Weight implementation for this query.

Only implemented by primitive queries, which re-write to themselves.

Public methodEquals (Overrides Object..::..Equals(Object).)
Public methodExtractTerms
Expert: adds all terms occuring in this query to the terms set. Only works if this query is in its {@link #rewrite rewritten} form.
Protected methodFinalize
Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetBoost
Gets the boost for this clause. Documents matching this clause will (in addition to the normal weightings) have their score multiplied by
CopyC#
b
. The boost is 1.0 by default.
Public methodGetHashCode (Overrides Object..::..GetHashCode()()()().)
Public methodGetSimilarity
Expert: Returns the Similarity implementation to be used for this query. Subclasses may override this method to specify their own Similarity implementation, perhaps one that delegates through that of the Searcher. By default the Searcher's Similarity implementation is returned.
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodStatic memberMergeBooleanQueries
Expert: merges the clauses of a set of BooleanQuery's into a single BooleanQuery.

A utility for use by {@link #Combine(Query[])} implementations.

Public methodRewrite
Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.
Public methodSetBoost
Sets the boost for this query clause to
CopyC#
b
. Documents matching this clause will (in addition to the normal weightings) have their score multiplied by
CopyC#
b
.
Public methodToString()()()()
Prints a query to a string.
(Overrides Object..::..ToString()()()().)
Public methodToString(String)
Prints a query to a string, with
CopyC#
field
 assumed to be the default field and omitted.

The representation used is one that is supposed to be readable by {@link Lucene.Net.QueryParsers.QueryParser QueryParser}. However, there are the following limitations:

  • If the query was created by the parser, the printed representation may not be exactly what was parsed. For example, characters that need to be escaped will be represented without the required backslash.
  • Some of the more complicated queries (e.g. span queries) don't have a representation that can be parsed by QueryParser.
Public methodWeight
Expert: Constructs and initializes a Weight for a top-level query.

See Also