Package org.apache.lucene.store

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

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    generation = generationFromSegmentsFileName(segmentFileName);

    lastGeneration = generation;

    try {
      int format = input.readInt();
      if(format < 0){     // file contains explicit format info
        // check that it is a format we can understand
        if (format < CURRENT_FORMAT)
          throw new CorruptIndexException("Unknown format version: " + format);
        version = input.readLong(); // read version
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      if(format < 0){     // file contains explicit format info
        // check that it is a format we can understand
        if (format < CURRENT_FORMAT)
          throw new CorruptIndexException("Unknown format version: " + format);
        version = input.readLong(); // read version
        counter = input.readInt(); // read counter
      }
      else{     // file is in old format without explicit format info
        counter = format;
      }
     
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      }
      else{     // file is in old format without explicit format info
        counter = format;
      }
     
      for (int i = input.readInt(); i > 0; i--) { // read segmentInfos
        addElement(new SegmentInfo(directory, format, input));
      }
     
      if(format >= 0){    // in old format the version number may be at the end of the file
        if (input.getFilePointer() >= input.length())
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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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            IndexInput ii = null;
            try {
                long time = System.currentTimeMillis();
                ii = reader.directory().openInput(FILE_CACHE_NAME_ARRAY);
                for (int i = 0; i < inSegmentParents.length; i++) {
                    inSegmentParents[i] = ii.readInt();
                }
                log.debug(
                        "persisted cache initialized {} DocIds in {} ms",
                        new Object[] { inSegmentParents.length,
                                System.currentTimeMillis() - time });
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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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        PostingsFormat delegatePostingsFormat = PostingsFormat.forName(bloomIn
            .readString());
       
        this.delegateFieldsProducer = delegatePostingsFormat
            .fieldsProducer(state);
        int numBlooms = bloomIn.readInt();
        for (int i = 0; i < numBlooms; i++) {
          int fieldNum = bloomIn.readInt();
          FuzzySet bloom = FuzzySet.deserialize(bloomIn);
          FieldInfo fieldInfo = state.fieldInfos.fieldInfo(fieldNum);
          bloomsByFieldName.put(fieldInfo.name, bloom);
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        this.delegateFieldsProducer = delegatePostingsFormat
            .fieldsProducer(state);
        int numBlooms = bloomIn.readInt();
        for (int i = 0; i < numBlooms; i++) {
          int fieldNum = bloomIn.readInt();
          FuzzySet bloom = FuzzySet.deserialize(bloomIn);
          FieldInfo fieldInfo = state.fieldInfos.fieldInfo(fieldNum);
          bloomsByFieldName.put(fieldInfo.name, bloom);
        }
        IOUtils.close(bloomIn);
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      }
      IndexInput in = null;
      boolean success = false;
      try {
        in = dir.openInput(file, newIOContext(random()));
        int val = in.readInt();
        assertEquals(file + " has no codec header, instead found: " + val, CodecUtil.CODEC_MAGIC, val);
        success = true;
      } finally {
        if (success) {
          IOUtils.close(in);
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