Package org.apache.lucene.codecs.uniformsplit

Class UniformSplitTermsReader

    • Field Detail

      • BASE_RAM_USAGE

        private static final long BASE_RAM_USAGE

      • version

        protected final int version

      • blockInput

        protected final IndexInput blockInput

      • dictionaryInput

        protected final IndexInput dictionaryInput

      • fieldToTermsMap

        protected final java.util.Map<java.lang.String,​UniformSplitTerms> fieldToTermsMap

      • sortedFieldNames

        protected final java.util.Collection<java.lang.String> sortedFieldNames

    • Constructor Detail

      • UniformSplitTermsReader

        public UniformSplitTermsReader​(PostingsReaderBase postingsReader,
                               SegmentReadState state,
                               BlockDecoder blockDecoder,
                               boolean dictionaryOnHeap)
                        throws java.io.IOException
        Parameters:
        blockDecoder - Optional block decoder, may be null if none. It can be used for decompression or decryption.
        dictionaryOnHeap - Whether to force loading the terms dictionary on-heap. By default it is kept off-heap without impact on performance. If block encoding/decoding is used, then the dictionary is always loaded on-heap whatever this parameter value is.
        Throws:
        java.io.IOException

    • Method Detail

      • readUnencodedFieldsMetadata

        protected java.util.Collection<FieldMetadata> readUnencodedFieldsMetadata​(int numFields,
                                                                          DataInput metadataInput,
                                                                          FieldInfos fieldInfos,
                                                                          FieldMetadata.Serializer fieldMetadataReader,
                                                                          int maxNumDocs)
                                                                   throws java.io.IOException
        Throws:
        java.io.IOException

      • 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

      • 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)
        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

      • 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

      • ramBytesUsed

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

      • getTermsRamBytesUsed

        protected long getTermsRamBytesUsed()

      • seekFieldsMetadata

        protected void seekFieldsMetadata​(IndexInput indexInput)
                           throws java.io.IOException
        Positions the given IndexInput at the beginning of the fields metadata.
        Throws:
        java.io.IOException