Class IndexReaderFunctions
java.lang.Object
org.apache.lucene.queries.function.IndexReaderFunctions
Class exposing static helper methods for generating DoubleValuesSource instances over some
IndexReader statistics
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Method Summary
Modifier and TypeMethodDescriptionstatic DoubleValuesSourceCreates a constant value source returning the docCount for a given fieldstatic DoubleValuesSourceCreates a constant value source returning the docFreq of a given termstatic DoubleValuesSourcemaxDoc()Creates a constant value source returning the index's maxDocstatic DoubleValuesSourceCreates a constant value source returning the number of deleted docs in the indexstatic DoubleValuesSourcenumDocs()Creates a constant value source returning the index's numDocsstatic DoubleValuesSourcesumDocFreq(String field) Creates a constant value source returning the sumDocFreq for a given fieldstatic LongValuesSourcesumTotalTermFreq(String field) Creates a constant value source returning the sumTotalTermFreq for a fieldstatic DoubleValuesSourceCreates a value source that returns the term freq of a given term for each documentstatic DoubleValuesSourcetotalTermFreq(Term term) Creates a constant value source returning the totalTermFreq for a given term
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Method Details
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docFreq
Creates a constant value source returning the docFreq of a given term- See Also:
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maxDoc
Creates a constant value source returning the index's maxDoc- See Also:
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numDocs
Creates a constant value source returning the index's numDocs- See Also:
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numDeletedDocs
Creates a constant value source returning the number of deleted docs in the index- See Also:
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sumTotalTermFreq
Creates a constant value source returning the sumTotalTermFreq for a field- See Also:
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termFreq
Creates a value source that returns the term freq of a given term for each document- See Also:
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totalTermFreq
Creates a constant value source returning the totalTermFreq for a given term- See Also:
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sumDocFreq
Creates a constant value source returning the sumDocFreq for a given field- See Also:
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docCount
Creates a constant value source returning the docCount for a given field- See Also:
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