Package org.apache.tika.eval.app.tools

Class SlowCompositeReaderWrapper

java.lang.Object
org.apache.lucene.index.IndexReader
org.apache.lucene.index.LeafReader
org.apache.tika.eval.app.tools.SlowCompositeReaderWrapper
All Implemented Interfaces:
Closeable, AutoCloseable
public final class SlowCompositeReaderWrapper extends org.apache.lucene.index.LeafReader
COPIED VERBATIM FROM LUCENE This class forces a composite reader (eg a MultiReader or DirectoryReader) to emulate a LeafReader. This requires implementing the postings APIs on-the-fly, using the static methods in MultiTerms, MultiDocValues, by stepping through the sub-readers to merge fields/terms, appending docs, etc.

NOTE: this class almost always results in a performance hit. If this is important to your use case, you'll get better performance by gathering the sub readers using IndexReader.getContext() to get the leaves and then operate per-LeafReader, instead of using this class.

  • Nested Class Summary

    Nested classes/interfaces inherited from class org.apache.lucene.index.IndexReader

    org.apache.lucene.index.IndexReader.CacheHelper, org.apache.lucene.index.IndexReader.CacheKey, org.apache.lucene.index.IndexReader.ClosedListener

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    checkIntegrity()
     
    protected void
    doClose()
     
    void
    document(int docID, org.apache.lucene.index.StoredFieldVisitor visitor)
     
    org.apache.lucene.index.BinaryDocValues
    getBinaryDocValues(String field)
     
    org.apache.lucene.index.IndexReader.CacheHelper
    getCoreCacheHelper()
     
    org.apache.lucene.index.FieldInfos
    getFieldInfos()
     
    org.apache.lucene.util.Bits
    getLiveDocs()
     
    org.apache.lucene.index.LeafMetaData
    getMetaData()
     
    org.apache.lucene.index.NumericDocValues
    getNormValues(String field)
     
    org.apache.lucene.index.NumericDocValues
    getNumericDocValues(String field)
     
    org.apache.lucene.index.PointValues
    getPointValues(String field)
     
    org.apache.lucene.index.IndexReader.CacheHelper
    getReaderCacheHelper()
     
    org.apache.lucene.index.SortedDocValues
    getSortedDocValues(String field)
     
    org.apache.lucene.index.SortedNumericDocValues
    getSortedNumericDocValues(String field)
     
    org.apache.lucene.index.SortedSetDocValues
    getSortedSetDocValues(String field)
     
    org.apache.lucene.index.Fields
    getTermVectors(int docID)
     
    int
    maxDoc()
     
    int
    numDocs()
     
    org.apache.lucene.index.Terms
    terms(String field)
     
    String
    toString()
     
    static org.apache.lucene.index.LeafReader
    wrap(org.apache.lucene.index.IndexReader reader)
    This method is sugar for getting an LeafReader from an IndexReader of any kind.

    Methods inherited from class org.apache.lucene.index.LeafReader

    docFreq, getContext, getDocCount, getSumDocFreq, getSumTotalTermFreq, postings, postings, totalTermFreq

    Methods inherited from class org.apache.lucene.index.IndexReader

    close, decRef, document, document, ensureOpen, equals, getRefCount, getTermVector, hasDeletions, hashCode, incRef, leaves, numDeletedDocs, registerParentReader, tryIncRef

    Methods inherited from class java.lang.Object

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

  • Method Details

    • wrap

      public static org.apache.lucene.index.LeafReader wrap(org.apache.lucene.index.IndexReader reader) throws IOException
      This method is sugar for getting an LeafReader from an IndexReader of any kind. If the reader is already atomic, it is returned unchanged, otherwise wrapped by this class.
      Throws:
      IOException

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • getReaderCacheHelper

      public org.apache.lucene.index.IndexReader.CacheHelper getReaderCacheHelper()
      Specified by:
      getReaderCacheHelper in class org.apache.lucene.index.IndexReader

    • getCoreCacheHelper

      public org.apache.lucene.index.IndexReader.CacheHelper getCoreCacheHelper()
      Specified by:
      getCoreCacheHelper in class org.apache.lucene.index.LeafReader

    • terms

      public org.apache.lucene.index.Terms terms(String field) throws IOException
      Specified by:
      terms in class org.apache.lucene.index.LeafReader
      Throws:
      IOException

    • getNumericDocValues

      public org.apache.lucene.index.NumericDocValues getNumericDocValues(String field) throws IOException
      Specified by:
      getNumericDocValues in class org.apache.lucene.index.LeafReader
      Throws:
      IOException

    • getBinaryDocValues

      public org.apache.lucene.index.BinaryDocValues getBinaryDocValues(String field) throws IOException
      Specified by:
      getBinaryDocValues in class org.apache.lucene.index.LeafReader
      Throws:
      IOException

    • getSortedNumericDocValues

      public org.apache.lucene.index.SortedNumericDocValues getSortedNumericDocValues(String field) throws IOException
      Specified by:
      getSortedNumericDocValues in class org.apache.lucene.index.LeafReader
      Throws:
      IOException

    • getSortedDocValues

      public org.apache.lucene.index.SortedDocValues getSortedDocValues(String field) throws IOException
      Specified by:
      getSortedDocValues in class org.apache.lucene.index.LeafReader
      Throws:
      IOException

    • getSortedSetDocValues

      public org.apache.lucene.index.SortedSetDocValues getSortedSetDocValues(String field) throws IOException
      Specified by:
      getSortedSetDocValues in class org.apache.lucene.index.LeafReader
      Throws:
      IOException

    • getNormValues

      public org.apache.lucene.index.NumericDocValues getNormValues(String field) throws IOException
      Specified by:
      getNormValues in class org.apache.lucene.index.LeafReader
      Throws:
      IOException

    • getTermVectors

      public org.apache.lucene.index.Fields getTermVectors(int docID) throws IOException
      Specified by:
      getTermVectors in class org.apache.lucene.index.IndexReader
      Throws:
      IOException

    • numDocs

      public int numDocs()
      Specified by:
      numDocs in class org.apache.lucene.index.IndexReader

    • maxDoc

      public int maxDoc()
      Specified by:
      maxDoc in class org.apache.lucene.index.IndexReader

    • document

      public void document(int docID, org.apache.lucene.index.StoredFieldVisitor visitor) throws IOException
      Specified by:
      document in class org.apache.lucene.index.IndexReader
      Throws:
      IOException

    • getLiveDocs

      public org.apache.lucene.util.Bits getLiveDocs()
      Specified by:
      getLiveDocs in class org.apache.lucene.index.LeafReader

    • getPointValues

      public org.apache.lucene.index.PointValues getPointValues(String field)
      Specified by:
      getPointValues in class org.apache.lucene.index.LeafReader

    • getFieldInfos

      public org.apache.lucene.index.FieldInfos getFieldInfos()
      Specified by:
      getFieldInfos in class org.apache.lucene.index.LeafReader

    • doClose

      protected void doClose() throws IOException
      Specified by:
      doClose in class org.apache.lucene.index.IndexReader
      Throws:
      IOException

    • checkIntegrity

      public void checkIntegrity() throws IOException
      Specified by:
      checkIntegrity in class org.apache.lucene.index.LeafReader
      Throws:
      IOException

    • getMetaData

      public org.apache.lucene.index.LeafMetaData getMetaData()
      Specified by:
      getMetaData in class org.apache.lucene.index.LeafReader