Home » lucene-3.0.1-src » org.apache » lucene » search » payloads » [javadoc | source]

org.apache.lucene.search.payloads
public class: PayloadTermQuery [javadoc | source]

java.lang.Object
   org.apache.lucene.search.Query
      org.apache.lucene.search.spans.SpanQuery
         org.apache.lucene.search.spans.SpanTermQuery
            org.apache.lucene.search.payloads.PayloadTermQuery

All Implemented Interfaces:
    Cloneable, Serializable

This class is very similar to org.apache.lucene.search.spans.SpanTermQuery except that it factors in the value of the payload located at each of the positions where the org.apache.lucene.index.Term occurs.

In order to take advantage of this, you must override org.apache.lucene.search.Similarity#scorePayload(int, String, int, int, byte[],int,int) which returns 1 by default.

Payload scores are aggregated using a pluggable PayloadFunction .

Nested Class Summary:
protected class	PayloadTermQuery.PayloadTermWeight

Field Summary
protected  PayloadFunction	function

Fields inherited from org.apache.lucene.search.spans.SpanTermQuery:
term

Constructor:
public PayloadTermQuery(Term term, PayloadFunction function) { this(term, function, true); }
public PayloadTermQuery(Term term, PayloadFunction function, boolean includeSpanScore) { super(term); this.function = function; this.includeSpanScore = includeSpanScore; }

Method from org.apache.lucene.search.payloads.PayloadTermQuery Summary:
createWeight,   equals,   hashCode

Methods from org.apache.lucene.search.spans.SpanTermQuery:
equals,   extractTerms,   getField,   getSpans,   getTerm,   hashCode,   toString

Methods from org.apache.lucene.search.spans.SpanQuery:
createWeight,   getField,   getSpans

Methods from org.apache.lucene.search.Query:
clone,   combine,   createWeight,   equals,   extractTerms,   getBoost,   getSimilarity,   hashCode,   mergeBooleanQueries,   rewrite,   setBoost,   toString,   toString,   weight

Methods from java.lang.Object:
clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait

Method from org.apache.lucene.search.payloads.PayloadTermQuery Detail:
public Weight createWeight(Searcher searcher) throws IOException { return new PayloadTermWeight(this, searcher); }
public boolean equals(Object obj) { if (this == obj) return true; if (!super.equals(obj)) return false; if (getClass() != obj.getClass()) return false; PayloadTermQuery other = (PayloadTermQuery) obj; if (function == null) { if (other.function != null) return false; } else if (!function.equals(other.function)) return false; if (includeSpanScore != other.includeSpanScore) return false; return true; }
public int hashCode() { final int prime = 31; int result = super.hashCode(); result = prime * result + ((function == null) ? 0 : function.hashCode()); result = prime * result + (includeSpanScore ? 1231 : 1237); return result; }