How to use

EncodingStats

in

org.apache.parquet.column

 public EncodingStats build() {
  return new EncodingStats(
    Collections.unmodifiableMap(new LinkedHashMap<Encoding, Integer>(dictStats)),
    Collections.unmodifiableMap(new LinkedHashMap<Encoding, Integer>(dataStats)),
    usesV2Pages);
 }
}

public List<PageEncodingStats> convertEncodingStats(EncodingStats stats) {
 if (stats == null) {
  return null;
 }
 List<PageEncodingStats> formatStats = new ArrayList<PageEncodingStats>();
 for (org.apache.parquet.column.Encoding encoding : stats.getDictionaryEncodings()) {
  formatStats.add(new PageEncodingStats(
    PageType.DICTIONARY_PAGE, getEncoding(encoding),
    stats.getNumDictionaryPagesEncodedAs(encoding)));
 }
 PageType dataPageType = (stats.usesV2Pages() ? PageType.DATA_PAGE_V2 : PageType.DATA_PAGE);
 for (org.apache.parquet.column.Encoding encoding : stats.getDataEncodings()) {
  formatStats.add(new PageEncodingStats(
    dataPageType, getEncoding(encoding),
    stats.getNumDataPagesEncodedAs(encoding)));
 }
 return formatStats;
}

 private boolean hasDictionaryPage(ColumnChunkMetaData column) {
  EncodingStats stats = column.getEncodingStats();
  if (stats != null) {
   // ensure there is a dictionary page and that it is used to encode data pages
   return stats.hasDictionaryPages() && stats.hasDictionaryEncodedPages();
  }

  Set<Encoding> encodings = column.getEncodings();
  return (encodings.contains(PLAIN_DICTIONARY) || encodings.contains(RLE_DICTIONARY));
 }
}

EncodingStats stats = meta.getEncodingStats();
if (stats != null) {
 return stats.hasNonDictionaryEncodedPages();

EncodingStats stats = meta.getEncodingStats();
if (stats != null) {
 return stats.hasNonDictionaryEncodedPages();

public List<PageEncodingStats> convertEncodingStats(EncodingStats stats) {
 if (stats == null) {
  return null;
 }
 List<PageEncodingStats> formatStats = new ArrayList<PageEncodingStats>();
 for (org.apache.parquet.column.Encoding encoding : stats.getDictionaryEncodings()) {
  formatStats.add(new PageEncodingStats(
    PageType.DICTIONARY_PAGE, getEncoding(encoding),
    stats.getNumDictionaryPagesEncodedAs(encoding)));
 }
 PageType dataPageType = (stats.usesV2Pages() ? PageType.DATA_PAGE_V2 : PageType.DATA_PAGE);
 for (org.apache.parquet.column.Encoding encoding : stats.getDataEncodings()) {
  formatStats.add(new PageEncodingStats(
    dataPageType, getEncoding(encoding),
    stats.getNumDataPagesEncodedAs(encoding)));
 }
 return formatStats;
}

 private boolean hasDictionaryPage(ColumnChunkMetaData column) {
  EncodingStats stats = column.getEncodingStats();
  if (stats != null) {
   // ensure there is a dictionary page and that it is used to encode data pages
   return stats.hasDictionaryPages() && stats.hasDictionaryEncodedPages();
  }

  Set<Encoding> encodings = column.getEncodings();
  return (encodings.contains(PLAIN_DICTIONARY) || encodings.contains(RLE_DICTIONARY));
 }
}

EncodingStats stats = meta.getEncodingStats();
if (stats != null) {
 return stats.hasNonDictionaryEncodedPages();

 public EncodingStats build() {
  return new EncodingStats(
    Collections.unmodifiableMap(new LinkedHashMap<Encoding, Integer>(dictStats)),
    Collections.unmodifiableMap(new LinkedHashMap<Encoding, Integer>(dataStats)),
    usesV2Pages);
 }
}