Package org.apache.lucene.search

Class PhraseWildcardQuery.PhraseTerm

java.lang.Object

org.apache.lucene.search.PhraseWildcardQuery.PhraseTerm

Direct Known Subclasses:

PhraseWildcardQuery.MultiTerm, PhraseWildcardQuery.SingleTerm

Enclosing class:

PhraseWildcardQuery

protected abstract static class PhraseWildcardQuery.PhraseTerm
extends java.lang.Object

All PhraseWildcardQuery.PhraseTerm are light and immutable. They do not hold query processing data such as PhraseWildcardQuery.TermsData. That way, the PhraseWildcardQuery is immutable and light itself and can be used safely as a key of the query cache.

Field Summary

Fields

Modifier and Type	Field	Description
protected int	termPosition

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PhraseTerm(int termPosition)

Method Summary

Modifier and Type	Method	Description
protected abstract int	collectTermData(PhraseWildcardQuery query, IndexSearcher searcher, java.util.List<LeafReaderContext> segments, int remainingMultiTerms, int maxExpansionsForTerm, PhraseWildcardQuery.TermsData termsData)	Collects TermState and TermStatistics for the term (potentially expanded).
protected int	collectTermData(PhraseWildcardQuery query, IndexSearcher searcher, java.util.List<LeafReaderContext> segments, PhraseWildcardQuery.TermsData termsData)	Collects TermState and TermStatistics for the term without expansion.
abstract boolean	equals(java.lang.Object o)
protected abstract Query	getQuery()
protected abstract boolean	hasExpansions()
abstract int	hashCode()
protected abstract void	toString(java.lang.StringBuilder builder)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

termPosition

protected final int termPosition

Constructor Detail

PhraseTerm

protected PhraseTerm(int termPosition)

Method Detail

hasExpansions

protected abstract boolean hasExpansions()

getQuery

protected abstract Query getQuery()

collectTermData

protected int collectTermData(PhraseWildcardQuery query,
                              IndexSearcher searcher,
                              java.util.List<LeafReaderContext> segments,
                              PhraseWildcardQuery.TermsData termsData)
                       throws java.io.IOException

Collects TermState and TermStatistics for the term without expansion. It must be called only if hasExpansions() returns false. Simplified version of #collectTermData(PhraseWildcardQuery, IndexSearcher, List, int, int, TermsData) with less arguments. This method throws UnsupportedOperationException if not overridden.

Throws:

java.io.IOException

collectTermData

protected abstract int collectTermData(PhraseWildcardQuery query,
                                       IndexSearcher searcher,
                                       java.util.List<LeafReaderContext> segments,
                                       int remainingMultiTerms,
                                       int maxExpansionsForTerm,
                                       PhraseWildcardQuery.TermsData termsData)
                                throws java.io.IOException

Collects TermState and TermStatistics for the term (potentially expanded).

Parameters:

termsData - PhraseWildcardQuery.TermsData to update with the collected terms and stats.

Returns:

The number of expansions or matches in all segments; or 0 if this term does not match in any segment, in this case the phrase query can immediately stop.

Throws:

java.io.IOException

toString

protected abstract void toString(java.lang.StringBuilder builder)

equals

public abstract boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public abstract int hashCode()

Overrides:

hashCode in class java.lang.Object