org.apache.lucene.search

Class BooleanClause.Occur

public static final class BooleanClause.Occur extends Parameter implements Serializable

Specifies how terms may occur in matching documents.

Field Summary
static BooleanClause.Occur	MUST Use this operator for terms that must appear in the matching documents.
static BooleanClause.Occur	MUST_NOT Use this operator for terms that must not appear in the matching documents.
static BooleanClause.Occur	SHOULD Use this operator for terms that should appear in the matching documents.

Method Summary
String	toString()

Field Detail

MUST

public static final BooleanClause.Occur MUST

Use this operator for terms that must appear in the matching documents.

MUST_NOT

public static final BooleanClause.Occur MUST_NOT

Use this operator for terms that must not appear in the matching documents. Note that it is not possible to search for queries that only consist of a MUST_NOT query.

SHOULD

public static final BooleanClause.Occur SHOULD

Use this operator for terms that should appear in the matching documents. For a BooleanQuery with two SHOULD subqueries, at least one of the queries must appear in the matching documents.

Method Detail

toString

public String toString()