Package org.apache.lucene.codecs.perfield

Class PerFieldMergeState.FilterFieldsProducer

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable, java.lang.Iterable<java.lang.String>, Accountable
    Enclosing class:
    PerFieldMergeState
    private static class PerFieldMergeState.FilterFieldsProducer
extends FieldsProducer

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void checkIntegrity()
      Checks consistency of this reader.
      void close()  
      java.util.Iterator<java.lang.String> iterator()
      Returns an iterator that will step through all fields names.
      long ramBytesUsed()
      Return the memory usage of this object in bytes.
      int size()
      Returns the number of fields or -1 if the number of distinct field names is unknown.
      Terms terms​(java.lang.String field)
      Get the Terms for this field.

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface java.lang.Iterable

        forEach, spliterator

    • Field Detail

      • filtered

        private final java.util.List<java.lang.String> filtered

    • Constructor Detail

      • FilterFieldsProducer

        FilterFieldsProducer​(FieldsProducer in,
                     java.util.Collection<java.lang.String> filterFields)

    • Method Detail

      • ramBytesUsed

        public long ramBytesUsed()
        Description copied from interface: Accountable
        Return the memory usage of this object in bytes. Negative values are illegal.

      • iterator

        public java.util.Iterator<java.lang.String> iterator()
        Description copied from class: Fields
        Returns an iterator that will step through all fields names. This will not return null.
        Specified by:
        iterator in interface java.lang.Iterable<java.lang.String>
        Specified by:
        iterator in class Fields

      • terms

        public Terms terms​(java.lang.String field)
            throws java.io.IOException
        Description copied from class: Fields
        Get the Terms for this field. This will return null if the field does not exist.
        Specified by:
        terms in class Fields
        Throws:
        java.io.IOException

      • size

        public int size()
        Description copied from class: Fields
        Returns the number of fields or -1 if the number of distinct field names is unknown. If >= 0, Fields.iterator() will return as many field names.
        Specified by:
        size in class Fields

      • close

        public void close()
           throws java.io.IOException
        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Specified by:
        close in class FieldsProducer
        Throws:
        java.io.IOException

      • checkIntegrity

        public void checkIntegrity()
                    throws java.io.IOException
        Description copied from class: FieldsProducer
        Checks consistency of this reader.

        Note that this may be costly in terms of I/O, e.g. may involve computing a checksum value against large data files.

        Specified by:
        checkIntegrity in class FieldsProducer
        Throws:
        java.io.IOException