Examples of org.apache.lucene.store.IndexInput.readInt()

Class org.apache.lucene.store.IndexInput

Examples of org.apache.lucene.store.IndexInput.readInt()

org.apache.lucene.store.IndexInput.readInt()
Reads four bytes and returns an int. @see IndexOutput#writeInt(int)

    <code>d</code>, as written by the {@link #write} method.
    */
  public BitVector(Directory d, String name) throws IOException {
    IndexInput input = d.openInput(name);
    try {
      size = input.readInt();       // read size
      if (size == -1) {
        readDgaps(input);
      } else {
        readBits(input);
      }

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      result.cantOpenSegments = true;
      return result;
    }
    int format = 0;
    try {
      format = input.readInt();
    } catch (Throwable t) {
      msg("ERROR: could not read segment file version in directory");
      if (infoStream != null)
        t.printStackTrace(infoStream);
      result.missingSegmentVersion = true;

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          IndexInput input = directory.openInput(segmentFileName);


          int format = 0;
          long version = 0;
          try {
            format = input.readInt();
            if(format < 0){
              if (format < CURRENT_FORMAT)
                throw new CorruptIndexException("Unknown format version: " + format);
              version = input.readLong(); // read version
            }

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                message("segments.gen open: IOException " + e);
              }


              if (genInput != null) {
                try {
                  int version = genInput.readInt();
                  if (version == FORMAT_LOCKLESS) {
                    long gen0 = genInput.readLong();
                    long gen1 = genInput.readLong();
                    message("fallback check: " + gen0 + "; " + gen1);
                    if (gen0 == gen1) {

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            }
          }
  
          if (genInput != null) {
            try {
              int version = genInput.readInt();
              if (version == FORMAT_SEGMENTS_GEN_CURRENT) {
                long gen0 = genInput.readLong();
                long gen1 = genInput.readLong();
                if (infoStream != null) {
                  message("fallback check: " + gen0 + "; " + gen1);

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      result.cantOpenSegments = true;
      return result;
    }
    int format = 0;
    try {
      format = input.readInt();
    } catch (Throwable t) {
      msg(infoStream, "ERROR: could not read segment file version in directory");
      if (infoStream != null)
        t.printStackTrace(infoStream);
      result.missingSegmentVersion = true;

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    }


    @Override
    public IntIndexInput openInput(Directory dir, String fileName, IOContext context) throws IOException {
      final IndexInput in = dir.openInput(fileName, context);
      final int baseBlockSize = in.readInt();
      return new VariableIntBlockIndexInput(in) {


        @Override
        protected BlockReader getBlockReader(final IndexInput in, final int[] buffer) {
          return new BlockReader() {

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      CodecUtil.checkHeader(index, Lucene40DocValuesFormat.BYTES_FIXED_DEREF_CODEC_NAME_IDX, 
                                   Lucene40DocValuesFormat.BYTES_FIXED_DEREF_VERSION_START, 
                                   Lucene40DocValuesFormat.BYTES_FIXED_DEREF_VERSION_CURRENT);
      
      final int fixedLength = data.readInt();
      final int valueCount = index.readInt();
      PagedBytes bytes = new PagedBytes(16);
      bytes.copy(data, fixedLength * (long) valueCount);
      final PagedBytes.Reader bytesReader = bytes.freeze(true);
      final PackedInts.Reader reader = PackedInts.getReader(index);
      if (data.getFilePointer() != data.length()) {

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  public static void checkCodeVersion(Directory dir, String segment) throws IOException {
    final String indexStreamFN = IndexFileNames.segmentFileName(segment, "", FIELDS_INDEX_EXTENSION);
    IndexInput idxStream = dir.openInput(indexStreamFN, IOContext.DEFAULT);
    
    try {
      int format = idxStream.readInt();
      if (format < FORMAT_MINIMUM)
        throw new IndexFormatTooOldException(idxStream, format, FORMAT_MINIMUM, FORMAT_CURRENT);
      if (format > FORMAT_CURRENT)
        throw new IndexFormatTooNewException(idxStream, format, FORMAT_MINIMUM, FORMAT_CURRENT);
    } finally {

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    */
  public BitVector(Directory d, String name, IOContext context) throws IOException {
    IndexInput input = d.openInput(name, context);


    try {
      final int firstInt = input.readInt();


      if (firstInt == -2) {
        // New format, with full header & version:
        version = CodecUtil.checkHeader(input, CODEC, VERSION_START, VERSION_CURRENT);
        size = input.readInt();

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