Examples of org.apache.lucene.index.FieldInfos

org.apache.lucene.index.FieldInfos
Access to the Fieldable Info file that describes document fields and whether or not they are indexed. Each segment has a separate Fieldable Info file. Objects of this class are thread-safe for multiple readers, but only one thread can be adding documents at a time, with no other reader or writer threads accessing this object.

      reader = SlowCompositeReaderWrapper.wrap((CompositeReader)r);
    } else {
      reader = (AtomicReader)r;
    }
    Set<String> res = new HashSet<String>();
    FieldInfos infos = reader.getFieldInfos();
    for (FieldInfo info : infos) {
      if (indexedOnly && info.isIndexed()) {
        res.add(info.name);
        continue;
      }

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      }


      if (input.getFilePointer() != input.length()) {
        throw new CorruptIndexException("did not read all bytes from file \"" + fileName + "\": read " + input.getFilePointer() + " vs size " + input.length() + " (resource: " + input + ")");
      }
      FieldInfos fieldInfos = new FieldInfos(infos);
      success = true;
      return fieldInfos;
    } finally {
      if (success) {
        input.close();

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    SegmentReader r = LuceneTestCase.getOnlySegmentReader(r0);
    String segment = r.getSegmentName();
    r.close();


    FieldInfosReader infosReader = new PreFlexRWCodec().fieldInfosFormat().getFieldInfosReader();
    FieldInfos fieldInfos = infosReader.read(directory, segment, "", IOContext.READONCE);
    String segmentFileName = IndexFileNames.segmentFileName(segment, "", Lucene3xPostingsFormat.TERMS_INDEX_EXTENSION);
    long tiiFileLength = directory.fileLength(segmentFileName);
    IndexInput input = directory.openInput(segmentFileName, newIOContext(random()));
    termEnum = new SegmentTermEnum(directory.openInput(IndexFileNames.segmentFileName(segment, "", Lucene3xPostingsFormat.TERMS_EXTENSION), newIOContext(random())), fieldInfos, false);
    int totalIndexInterval = termEnum.indexInterval * indexDivisor;

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      return null;
    }
    
    @Override
    public FieldInfos getFieldInfos() {
      return new FieldInfos(fieldInfos.values().toArray(new FieldInfo[fieldInfos.size()]));
    }

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    // collect all fields which have DocValues, to assert later that all were
    // visited i.e. that during migration we didn't add FieldInfos with no
    // DocValues
    HashSet<String> docValuesFields = new HashSet<String>();
    for (AtomicReaderContext context : indexReader.leaves()) {
      FieldInfos infos = context.reader().getFieldInfos();
      for (FieldInfo info : infos) {
        if (info.hasDocValues()) {
          docValuesFields.add(info.name);
        }
      }

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      }


      if (input.getFilePointer() != input.length()) {
        throw new CorruptIndexException("did not read all bytes from file \"" + fileName + "\": read " + input.getFilePointer() + " vs size " + input.length() + " (resource: " + input + ")");
      }
      FieldInfos fieldInfos = new FieldInfos(infos);
      success = true;
      return fieldInfos;
    } finally {
      if (success) {
        input.close();

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      }


      if (input.getFilePointer() != input.length()) {
        throw new CorruptIndexException("did not read all bytes from file \"" + fileName + "\": read " + input.getFilePointer() + " vs size " + input.length() + " (resource: " + input + ")");
      }
      FieldInfos fieldInfos = new FieldInfos(infos);
      success = true;
      return fieldInfos;
    } finally {
      if (success) {
        input.close();

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    }
  }


  @Override
  public FieldInfos getFieldInfos() {
    FieldInfos innerInfos = super.getFieldInfos();
    ArrayList<FieldInfo> infos = new ArrayList<FieldInfo>(innerInfos.size());
    // if there are partitions, then the source index contains one field for all their terms
    // while with DocValues, we simulate that by multiple fields.
    HashSet<String> leftoverFields = new HashSet<String>(fieldTerms.keySet());
    int number = -1;
    for (FieldInfo info : innerInfos) {
      if (fieldTerms.containsKey(info.name)) {
        // mark this field as having a DocValues
        infos.add(new FieldInfo(info.name, true, info.number,
            info.hasVectors(), info.omitsNorms(), info.hasPayloads(),
            info.getIndexOptions(), DocValuesType.BINARY,
            info.getNormType(), info.attributes()));
        leftoverFields.remove(info.name);
      } else {
        infos.add(info);
      }
      number = Math.max(number, info.number);
    }
    for (String field : leftoverFields) {
      infos.add(new FieldInfo(field, false, ++number, false, false, false,
          null, DocValuesType.BINARY, null, null));
    }
    return new FieldInfos(infos.toArray(new FieldInfo[infos.size()]));
  }

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      if (input.getFilePointer() != input.length()) {
        throw new CorruptIndexException("did not read all bytes from file \"" + fileName + "\": read " + input.getFilePointer() + " vs size " + input.length() + " (resource: " + input + ")");
      }
      
      FieldInfos fieldInfos = new FieldInfos(infos);
      success = true;
      return fieldInfos;
    } finally {
      if (success) {
        input.close();

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      return null;
    }
    
    @Override
    public FieldInfos getFieldInfos() {
      return new FieldInfos(fieldInfos.values().toArray(new FieldInfo[fieldInfos.size()]));
    }

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org.apache.lucene.codecs.lucene3x.Lucene3xFieldInfosReader

org.apache.lucene.codecs.lucene3x.PreFlexRWFieldInfosReader

org.apache.lucene.codecs.lucene3x.TestTermInfosReaderIndex

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org.apache.lucene.codecs.lucene42.Lucene42FieldInfosReader

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org.apache.lucene.codecs.memory.FSTOrdTermsReader

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org.apache.lucene.codecs.simpletext.SimpleTextFieldInfosReader

org.apache.lucene.document.Field

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