Class Collector

LUCENENET specific class used to hold the NewAnonymous(Action<Scorer>, Action<Int32>, Action<AtomicReaderContext>, Func<Boolean>) static method.

Inheritance

System.Object

Collector

Namespace: Lucene.Net.Search

Assembly: Lucene.Net.dll

Syntax

public static class Collector : object

Methods

NewAnonymous(Action<Scorer>, Action<Int32>, Action<AtomicReaderContext>, Func<Boolean>)

Creates a new instance with the ability to specify the body of the SetScorer(Scorer) method through the setScorer parameter, the body of the Collect(Int32) method through the collect parameter, the body of the SetNextReader(AtomicReaderContext) method through the setNextReader parameter, and the body of the AcceptsDocsOutOfOrder property through the acceptsDocsOutOfOrder parameter. Simple example:

    IndexSearcher searcher = new IndexSearcher(indexReader);
    OpenBitSet bits = new OpenBitSet(indexReader.MaxDoc);
    int docBase;
    searcher.Search(query, 
        Collector.NewAnonymous(setScorer: (scorer) =>
        {
            // ignore scorer
        }, collect: (doc) =>
        {
            bits.Set(doc + docBase);
        }, setNextReader: (context) =>
        {
            docBase = context.DocBase;
        }, acceptsDocsOutOfOrder: () =>
        {
            return true;
        })
    );

Declaration

public static ICollector NewAnonymous(Action<Scorer> setScorer, Action<int> collect, Action<AtomicReaderContext> setNextReader, Func<bool> acceptsDocsOutOfOrder)

Parameters

Type	Name	Description
Action<Scorer>	setScorer	A delegate method that represents (is called by) the SetScorer(Scorer) method. It accepts a Scorer scorer and has no return value.
Action<System.Int32>	collect	A delegate method that represents (is called by) the Collect(Int32) method. It accepts an doc and has no return value.
Action<AtomicReaderContext>	setNextReader	A delegate method that represents (is called by) the SetNextReader(AtomicReaderContext) method. It accepts a AtomicReaderContext context and has no return value.
Func<System.Boolean>	acceptsDocsOutOfOrder	A delegate method that represents (is called by) the AcceptsDocsOutOfOrder property. It returns a value.

Returns

Type	Description
ICollector	A new Lucene.Net.Search.Collector.AnonymousCollector instance.