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java.lang.Object org.apache.lucene.search.Filter org.apache.lucene.queries.BooleanFilter
public class BooleanFilter
A container Filter that allows Boolean composition of Filters. Filters are allocated into one of three logical constructs; SHOULD, MUST NOT, MUST The results Filter BitSet is constructed as follows: SHOULD Filters are OR'd together The resulting Filter is NOT'd with the NOT Filters The resulting Filter is AND'd with the MUST Filters
Constructor Summary | |
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BooleanFilter()
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Method Summary | |
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void |
add(Filter filter,
BooleanClause.Occur occur)
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void |
add(FilterClause filterClause)
Adds a new FilterClause to the Boolean Filter container |
List<FilterClause> |
clauses()
Returns the list of clauses |
boolean |
equals(Object obj)
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DocIdSet |
getDocIdSet(AtomicReaderContext context,
Bits acceptDocs)
Returns the a DocIdSetIterator representing the Boolean composition of the filters that have been added. |
int |
hashCode()
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Iterator<FilterClause> |
iterator()
Returns an iterator on the clauses in this query. |
String |
toString()
Prints a user-readable version of this Filter. |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public BooleanFilter()
Method Detail |
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public DocIdSet getDocIdSet(AtomicReaderContext context, Bits acceptDocs) throws IOException
getDocIdSet
in class Filter
IOException
public void add(FilterClause filterClause)
filterClause
- A FilterClause object containing a Filter and an Occur parameterpublic final void add(Filter filter, BooleanClause.Occur occur)
public List<FilterClause> clauses()
public final Iterator<FilterClause> iterator()
Iterable
interface to
make it possible to do:
for (FilterClause clause : booleanFilter) {}
iterator
in interface Iterable<FilterClause>
public boolean equals(Object obj)
equals
in class Object
public int hashCode()
hashCode
in class Object
public String toString()
toString
in class Object
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