org.apache.lucene.search

Class BooleanClause.Occur

public static final class BooleanClause.Occur extends Parameter implements Serializable

Specifies how clauses are to occur in matching documents.

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

Method Summary
String	toString()

Field Detail

MUST

public static final BooleanClause.Occur MUST

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

MUST_NOT

public static final BooleanClause.Occur MUST_NOT

Use this operator for clauses 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 clause.

SHOULD

public static final BooleanClause.Occur SHOULD

Use this operator for clauses that should appear in the matching documents. For a BooleanQuery with no MUST clauses one or more SHOULD clauses must match a document for the BooleanQuery to match.

Method Detail

toString

public String toString()