public class BooleanQuery extends Query implements java.lang.Iterable<BooleanClause>
TermQuery
s, PhraseQuery
s or other
BooleanQuerys.Modifier and Type | Class and Description |
---|---|
static class |
BooleanQuery.Builder
A builder for boolean queries.
|
static class |
BooleanQuery.TooManyClauses
Thrown when an attempt is made to add more than
getMaxClauseCount() clauses. |
Modifier and Type | Field and Description |
---|---|
private java.util.List<BooleanClause> |
clauses |
private java.util.Map<BooleanClause.Occur,java.util.Collection<Query>> |
clauseSets |
private int |
hashCode |
private static int |
maxClauseCount |
private int |
minimumNumberShouldMatch |
Modifier | Constructor and Description |
---|---|
private |
BooleanQuery(int minimumNumberShouldMatch,
BooleanClause[] clauses) |
Modifier and Type | Method and Description |
---|---|
java.util.List<BooleanClause> |
clauses()
Return a list of the clauses of this
BooleanQuery . |
private int |
computeHashCode() |
Weight |
createWeight(IndexSearcher searcher,
ScoreMode scoreMode,
float boost)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(java.lang.Object o)
Compares the specified object with this boolean query for equality.
|
private boolean |
equalsTo(BooleanQuery other) |
(package private) java.util.Collection<Query> |
getClauses(BooleanClause.Occur occur)
Return the collection of queries for the given
BooleanClause.Occur . |
static int |
getMaxClauseCount()
Return the maximum number of clauses permitted, 1024 by default.
|
int |
getMinimumNumberShouldMatch()
Gets the minimum number of the optional BooleanClauses
which must be satisfied.
|
int |
hashCode()
Override and implement query hash code properly in a subclass.
|
(package private) boolean |
isPureDisjunction()
Whether this query is a pure disjunction, ie.
|
java.util.Iterator<BooleanClause> |
iterator()
Returns an iterator on the clauses in this query.
|
Query |
rewrite(IndexReader reader)
Expert: called to re-write queries into primitive queries.
|
private BooleanQuery |
rewriteNoScoring() |
static void |
setMaxClauseCount(int maxClauseCount)
Set the maximum number of clauses permitted per BooleanQuery.
|
java.lang.String |
toString(java.lang.String field)
Prints a user-readable version of this query.
|
void |
visit(QueryVisitor visitor)
Recurse through the query tree, visiting any child queries
|
classHash, sameClassAs, toString
private static int maxClauseCount
private final int minimumNumberShouldMatch
private final java.util.List<BooleanClause> clauses
private final java.util.Map<BooleanClause.Occur,java.util.Collection<Query>> clauseSets
private int hashCode
private BooleanQuery(int minimumNumberShouldMatch, BooleanClause[] clauses)
public static int getMaxClauseCount()
BooleanQuery.TooManyClauses
to be thrown.setMaxClauseCount(int)
public static void setMaxClauseCount(int maxClauseCount)
public int getMinimumNumberShouldMatch()
public java.util.List<BooleanClause> clauses()
BooleanQuery
.java.util.Collection<Query> getClauses(BooleanClause.Occur occur)
BooleanClause.Occur
.boolean isPureDisjunction()
public final java.util.Iterator<BooleanClause> iterator()
Iterable
interface to
make it possible to do:
for (BooleanClause clause : booleanQuery) {}
iterator
in interface java.lang.Iterable<BooleanClause>
private BooleanQuery rewriteNoScoring()
public Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws java.io.IOException
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class Query
scoreMode
- How the produced scorers will be consumed.boost
- The boost that is propagated by the parent queries.java.io.IOException
public Query rewrite(IndexReader reader) throws java.io.IOException
Query
public void visit(QueryVisitor visitor)
Query
public java.lang.String toString(java.lang.String field)
public boolean equals(java.lang.Object o)
BooleanQuery
,getMinimumNumberShouldMatch()
BooleanClause.Occur.SHOULD
clauses, regardless of the orderBooleanClause.Occur.MUST
clauses, regardless of the orderBooleanClause.Occur.FILTER
clauses, regardless of the
order and regardless of duplicatesBooleanClause.Occur.MUST_NOT
clauses, regardless of
the order and regardless of duplicatesequals
in class Query
Query.sameClassAs(Object)
,
Query.classHash()
private boolean equalsTo(BooleanQuery other)
private int computeHashCode()
public int hashCode()
Query
QueryCache
works properly.hashCode
in class Query
Query.equals(Object)